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q3k 2013-11-17 23:15:39 +01:00
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*.o
*swp
*.elf
*.bin
# Waste of space
FreeRTOS/portable
# We cannot distribute this due to licensing issues.
STM32F10x_StdPeriph_Lib_V3.5.0

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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
#include "FreeRTOS.h"
#include "task.h"
#include "croutine.h"
/*
* Some kernel aware debuggers require data to be viewed to be global, rather
* than file scope.
*/
#ifdef portREMOVE_STATIC_QUALIFIER
#define static
#endif
/* Lists for ready and blocked co-routines. --------------------*/
static xList pxReadyCoRoutineLists[ configMAX_CO_ROUTINE_PRIORITIES ]; /*< Prioritised ready co-routines. */
static xList xDelayedCoRoutineList1; /*< Delayed co-routines. */
static xList xDelayedCoRoutineList2; /*< Delayed co-routines (two lists are used - one for delays that have overflowed the current tick count. */
static xList * pxDelayedCoRoutineList; /*< Points to the delayed co-routine list currently being used. */
static xList * pxOverflowDelayedCoRoutineList; /*< Points to the delayed co-routine list currently being used to hold co-routines that have overflowed the current tick count. */
static xList xPendingReadyCoRoutineList; /*< Holds co-routines that have been readied by an external event. They cannot be added directly to the ready lists as the ready lists cannot be accessed by interrupts. */
/* Other file private variables. --------------------------------*/
corCRCB * pxCurrentCoRoutine = NULL;
static unsigned portBASE_TYPE uxTopCoRoutineReadyPriority = 0;
static portTickType xCoRoutineTickCount = 0, xLastTickCount = 0, xPassedTicks = 0;
/* The initial state of the co-routine when it is created. */
#define corINITIAL_STATE ( 0 )
/*
* Place the co-routine represented by pxCRCB into the appropriate ready queue
* for the priority. It is inserted at the end of the list.
*
* This macro accesses the co-routine ready lists and therefore must not be
* used from within an ISR.
*/
#define prvAddCoRoutineToReadyQueue( pxCRCB ) \
{ \
if( pxCRCB->uxPriority > uxTopCoRoutineReadyPriority ) \
{ \
uxTopCoRoutineReadyPriority = pxCRCB->uxPriority; \
} \
vListInsertEnd( ( xList * ) &( pxReadyCoRoutineLists[ pxCRCB->uxPriority ] ), &( pxCRCB->xGenericListItem ) ); \
}
/*
* Utility to ready all the lists used by the scheduler. This is called
* automatically upon the creation of the first co-routine.
*/
static void prvInitialiseCoRoutineLists( void );
/*
* Co-routines that are readied by an interrupt cannot be placed directly into
* the ready lists (there is no mutual exclusion). Instead they are placed in
* in the pending ready list in order that they can later be moved to the ready
* list by the co-routine scheduler.
*/
static void prvCheckPendingReadyList( void );
/*
* Macro that looks at the list of co-routines that are currently delayed to
* see if any require waking.
*
* Co-routines are stored in the queue in the order of their wake time -
* meaning once one co-routine has been found whose timer has not expired
* we need not look any further down the list.
*/
static void prvCheckDelayedList( void );
/*-----------------------------------------------------------*/
signed portBASE_TYPE xCoRoutineCreate( crCOROUTINE_CODE pxCoRoutineCode, unsigned portBASE_TYPE uxPriority, unsigned portBASE_TYPE uxIndex )
{
signed portBASE_TYPE xReturn;
corCRCB *pxCoRoutine;
/* Allocate the memory that will store the co-routine control block. */
pxCoRoutine = ( corCRCB * ) pvPortMalloc( sizeof( corCRCB ) );
if( pxCoRoutine )
{
/* If pxCurrentCoRoutine is NULL then this is the first co-routine to
be created and the co-routine data structures need initialising. */
if( pxCurrentCoRoutine == NULL )
{
pxCurrentCoRoutine = pxCoRoutine;
prvInitialiseCoRoutineLists();
}
/* Check the priority is within limits. */
if( uxPriority >= configMAX_CO_ROUTINE_PRIORITIES )
{
uxPriority = configMAX_CO_ROUTINE_PRIORITIES - 1;
}
/* Fill out the co-routine control block from the function parameters. */
pxCoRoutine->uxState = corINITIAL_STATE;
pxCoRoutine->uxPriority = uxPriority;
pxCoRoutine->uxIndex = uxIndex;
pxCoRoutine->pxCoRoutineFunction = pxCoRoutineCode;
/* Initialise all the other co-routine control block parameters. */
vListInitialiseItem( &( pxCoRoutine->xGenericListItem ) );
vListInitialiseItem( &( pxCoRoutine->xEventListItem ) );
/* Set the co-routine control block as a link back from the xListItem.
This is so we can get back to the containing CRCB from a generic item
in a list. */
listSET_LIST_ITEM_OWNER( &( pxCoRoutine->xGenericListItem ), pxCoRoutine );
listSET_LIST_ITEM_OWNER( &( pxCoRoutine->xEventListItem ), pxCoRoutine );
/* Event lists are always in priority order. */
listSET_LIST_ITEM_VALUE( &( pxCoRoutine->xEventListItem ), configMAX_PRIORITIES - ( portTickType ) uxPriority );
/* Now the co-routine has been initialised it can be added to the ready
list at the correct priority. */
prvAddCoRoutineToReadyQueue( pxCoRoutine );
xReturn = pdPASS;
}
else
{
xReturn = errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY;
}
return xReturn;
}
/*-----------------------------------------------------------*/
void vCoRoutineAddToDelayedList( portTickType xTicksToDelay, xList *pxEventList )
{
portTickType xTimeToWake;
/* Calculate the time to wake - this may overflow but this is
not a problem. */
xTimeToWake = xCoRoutineTickCount + xTicksToDelay;
/* We must remove ourselves from the ready list before adding
ourselves to the blocked list as the same list item is used for
both lists. */
( void ) uxListRemove( ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
/* The list item will be inserted in wake time order. */
listSET_LIST_ITEM_VALUE( &( pxCurrentCoRoutine->xGenericListItem ), xTimeToWake );
if( xTimeToWake < xCoRoutineTickCount )
{
/* Wake time has overflowed. Place this item in the
overflow list. */
vListInsert( ( xList * ) pxOverflowDelayedCoRoutineList, ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
}
else
{
/* The wake time has not overflowed, so we can use the
current block list. */
vListInsert( ( xList * ) pxDelayedCoRoutineList, ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
}
if( pxEventList )
{
/* Also add the co-routine to an event list. If this is done then the
function must be called with interrupts disabled. */
vListInsert( pxEventList, &( pxCurrentCoRoutine->xEventListItem ) );
}
}
/*-----------------------------------------------------------*/
static void prvCheckPendingReadyList( void )
{
/* Are there any co-routines waiting to get moved to the ready list? These
are co-routines that have been readied by an ISR. The ISR cannot access
the ready lists itself. */
while( listLIST_IS_EMPTY( &xPendingReadyCoRoutineList ) == pdFALSE )
{
corCRCB *pxUnblockedCRCB;
/* The pending ready list can be accessed by an ISR. */
portDISABLE_INTERRUPTS();
{
pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( (&xPendingReadyCoRoutineList) );
( void ) uxListRemove( &( pxUnblockedCRCB->xEventListItem ) );
}
portENABLE_INTERRUPTS();
( void ) uxListRemove( &( pxUnblockedCRCB->xGenericListItem ) );
prvAddCoRoutineToReadyQueue( pxUnblockedCRCB );
}
}
/*-----------------------------------------------------------*/
static void prvCheckDelayedList( void )
{
corCRCB *pxCRCB;
xPassedTicks = xTaskGetTickCount() - xLastTickCount;
while( xPassedTicks )
{
xCoRoutineTickCount++;
xPassedTicks--;
/* If the tick count has overflowed we need to swap the ready lists. */
if( xCoRoutineTickCount == 0 )
{
xList * pxTemp;
/* Tick count has overflowed so we need to swap the delay lists. If there are
any items in pxDelayedCoRoutineList here then there is an error! */
pxTemp = pxDelayedCoRoutineList;
pxDelayedCoRoutineList = pxOverflowDelayedCoRoutineList;
pxOverflowDelayedCoRoutineList = pxTemp;
}
/* See if this tick has made a timeout expire. */
while( listLIST_IS_EMPTY( pxDelayedCoRoutineList ) == pdFALSE )
{
pxCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxDelayedCoRoutineList );
if( xCoRoutineTickCount < listGET_LIST_ITEM_VALUE( &( pxCRCB->xGenericListItem ) ) )
{
/* Timeout not yet expired. */
break;
}
portDISABLE_INTERRUPTS();
{
/* The event could have occurred just before this critical
section. If this is the case then the generic list item will
have been moved to the pending ready list and the following
line is still valid. Also the pvContainer parameter will have
been set to NULL so the following lines are also valid. */
uxListRemove( &( pxCRCB->xGenericListItem ) );
/* Is the co-routine waiting on an event also? */
if( pxCRCB->xEventListItem.pvContainer )
{
( void ) uxListRemove( &( pxCRCB->xEventListItem ) );
}
}
portENABLE_INTERRUPTS();
prvAddCoRoutineToReadyQueue( pxCRCB );
}
}
xLastTickCount = xCoRoutineTickCount;
}
/*-----------------------------------------------------------*/
void vCoRoutineSchedule( void )
{
/* See if any co-routines readied by events need moving to the ready lists. */
prvCheckPendingReadyList();
/* See if any delayed co-routines have timed out. */
prvCheckDelayedList();
/* Find the highest priority queue that contains ready co-routines. */
while( listLIST_IS_EMPTY( &( pxReadyCoRoutineLists[ uxTopCoRoutineReadyPriority ] ) ) )
{
if( uxTopCoRoutineReadyPriority == 0 )
{
/* No more co-routines to check. */
return;
}
--uxTopCoRoutineReadyPriority;
}
/* listGET_OWNER_OF_NEXT_ENTRY walks through the list, so the co-routines
of the same priority get an equal share of the processor time. */
listGET_OWNER_OF_NEXT_ENTRY( pxCurrentCoRoutine, &( pxReadyCoRoutineLists[ uxTopCoRoutineReadyPriority ] ) );
/* Call the co-routine. */
( pxCurrentCoRoutine->pxCoRoutineFunction )( pxCurrentCoRoutine, pxCurrentCoRoutine->uxIndex );
return;
}
/*-----------------------------------------------------------*/
static void prvInitialiseCoRoutineLists( void )
{
unsigned portBASE_TYPE uxPriority;
for( uxPriority = 0; uxPriority < configMAX_CO_ROUTINE_PRIORITIES; uxPriority++ )
{
vListInitialise( ( xList * ) &( pxReadyCoRoutineLists[ uxPriority ] ) );
}
vListInitialise( ( xList * ) &xDelayedCoRoutineList1 );
vListInitialise( ( xList * ) &xDelayedCoRoutineList2 );
vListInitialise( ( xList * ) &xPendingReadyCoRoutineList );
/* Start with pxDelayedCoRoutineList using list1 and the
pxOverflowDelayedCoRoutineList using list2. */
pxDelayedCoRoutineList = &xDelayedCoRoutineList1;
pxOverflowDelayedCoRoutineList = &xDelayedCoRoutineList2;
}
/*-----------------------------------------------------------*/
signed portBASE_TYPE xCoRoutineRemoveFromEventList( const xList *pxEventList )
{
corCRCB *pxUnblockedCRCB;
signed portBASE_TYPE xReturn;
/* This function is called from within an interrupt. It can only access
event lists and the pending ready list. This function assumes that a
check has already been made to ensure pxEventList is not empty. */
pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxEventList );
( void ) uxListRemove( &( pxUnblockedCRCB->xEventListItem ) );
vListInsertEnd( ( xList * ) &( xPendingReadyCoRoutineList ), &( pxUnblockedCRCB->xEventListItem ) );
if( pxUnblockedCRCB->uxPriority >= pxCurrentCoRoutine->uxPriority )
{
xReturn = pdTRUE;
}
else
{
xReturn = pdFALSE;
}
return xReturn;
}

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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
/*
* A sample implementation of pvPortMalloc() and vPortFree() that permits
* allocated blocks to be freed, but does not combine adjacent free blocks
* into a single larger block (and so will fragment memory). See heap_4.c for
* an equivalent that does combine adjacent blocks into single larger blocks.
*
* See heap_1.c, heap_3.c and heap_4.c for alternative implementations, and the
* memory management pages of http://www.FreeRTOS.org for more information.
*/
#include <stdlib.h>
/* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining
all the API functions to use the MPU wrappers. That should only be done when
task.h is included from an application file. */
#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE
#include "FreeRTOS.h"
#include "task.h"
#undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE
/* A few bytes might be lost to byte aligning the heap start address. */
#define configADJUSTED_HEAP_SIZE ( configTOTAL_HEAP_SIZE - portBYTE_ALIGNMENT )
/*
* Initialises the heap structures before their first use.
*/
static void prvHeapInit( void );
/* Allocate the memory for the heap. */
static unsigned char ucHeap[ configTOTAL_HEAP_SIZE ];
/* Define the linked list structure. This is used to link free blocks in order
of their size. */
typedef struct A_BLOCK_LINK
{
struct A_BLOCK_LINK *pxNextFreeBlock; /*<< The next free block in the list. */
size_t xBlockSize; /*<< The size of the free block. */
} xBlockLink;
static const unsigned short heapSTRUCT_SIZE = ( ( sizeof ( xBlockLink ) + ( portBYTE_ALIGNMENT - 1 ) ) & ~portBYTE_ALIGNMENT_MASK );
#define heapMINIMUM_BLOCK_SIZE ( ( size_t ) ( heapSTRUCT_SIZE * 2 ) )
/* Create a couple of list links to mark the start and end of the list. */
static xBlockLink xStart, xEnd;
/* Keeps track of the number of free bytes remaining, but says nothing about
fragmentation. */
static size_t xFreeBytesRemaining = configADJUSTED_HEAP_SIZE;
/* STATIC FUNCTIONS ARE DEFINED AS MACROS TO MINIMIZE THE FUNCTION CALL DEPTH. */
/*
* Insert a block into the list of free blocks - which is ordered by size of
* the block. Small blocks at the start of the list and large blocks at the end
* of the list.
*/
#define prvInsertBlockIntoFreeList( pxBlockToInsert ) \
{ \
xBlockLink *pxIterator; \
size_t xBlockSize; \
\
xBlockSize = pxBlockToInsert->xBlockSize; \
\
/* Iterate through the list until a block is found that has a larger size */ \
/* than the block we are inserting. */ \
for( pxIterator = &xStart; pxIterator->pxNextFreeBlock->xBlockSize < xBlockSize; pxIterator = pxIterator->pxNextFreeBlock ) \
{ \
/* There is nothing to do here - just iterate to the correct position. */ \
} \
\
/* Update the list to include the block being inserted in the correct */ \
/* position. */ \
pxBlockToInsert->pxNextFreeBlock = pxIterator->pxNextFreeBlock; \
pxIterator->pxNextFreeBlock = pxBlockToInsert; \
}
/*-----------------------------------------------------------*/
void *pvPortMalloc( size_t xWantedSize )
{
xBlockLink *pxBlock, *pxPreviousBlock, *pxNewBlockLink;
static portBASE_TYPE xHeapHasBeenInitialised = pdFALSE;
void *pvReturn = NULL;
vTaskSuspendAll();
{
/* If this is the first call to malloc then the heap will require
initialisation to setup the list of free blocks. */
if( xHeapHasBeenInitialised == pdFALSE )
{
prvHeapInit();
xHeapHasBeenInitialised = pdTRUE;
}
/* The wanted size is increased so it can contain a xBlockLink
structure in addition to the requested amount of bytes. */
if( xWantedSize > 0 )
{
xWantedSize += heapSTRUCT_SIZE;
/* Ensure that blocks are always aligned to the required number of bytes. */
if( ( xWantedSize & portBYTE_ALIGNMENT_MASK ) != 0 )
{
/* Byte alignment required. */
xWantedSize += ( portBYTE_ALIGNMENT - ( xWantedSize & portBYTE_ALIGNMENT_MASK ) );
}
}
if( ( xWantedSize > 0 ) && ( xWantedSize < configADJUSTED_HEAP_SIZE ) )
{
/* Blocks are stored in byte order - traverse the list from the start
(smallest) block until one of adequate size is found. */
pxPreviousBlock = &xStart;
pxBlock = xStart.pxNextFreeBlock;
while( ( pxBlock->xBlockSize < xWantedSize ) && ( pxBlock->pxNextFreeBlock != NULL ) )
{
pxPreviousBlock = pxBlock;
pxBlock = pxBlock->pxNextFreeBlock;
}
/* If we found the end marker then a block of adequate size was not found. */
if( pxBlock != &xEnd )
{
/* Return the memory space - jumping over the xBlockLink structure
at its start. */
pvReturn = ( void * ) ( ( ( unsigned char * ) pxPreviousBlock->pxNextFreeBlock ) + heapSTRUCT_SIZE );
/* This block is being returned for use so must be taken out of the
list of free blocks. */
pxPreviousBlock->pxNextFreeBlock = pxBlock->pxNextFreeBlock;
/* If the block is larger than required it can be split into two. */
if( ( pxBlock->xBlockSize - xWantedSize ) > heapMINIMUM_BLOCK_SIZE )
{
/* This block is to be split into two. Create a new block
following the number of bytes requested. The void cast is
used to prevent byte alignment warnings from the compiler. */
pxNewBlockLink = ( void * ) ( ( ( unsigned char * ) pxBlock ) + xWantedSize );
/* Calculate the sizes of two blocks split from the single
block. */
pxNewBlockLink->xBlockSize = pxBlock->xBlockSize - xWantedSize;
pxBlock->xBlockSize = xWantedSize;
/* Insert the new block into the list of free blocks. */
prvInsertBlockIntoFreeList( ( pxNewBlockLink ) );
}
xFreeBytesRemaining -= pxBlock->xBlockSize;
}
}
traceMALLOC( pvReturn, xWantedSize );
}
xTaskResumeAll();
#if( configUSE_MALLOC_FAILED_HOOK == 1 )
{
if( pvReturn == NULL )
{
extern void vApplicationMallocFailedHook( void );
vApplicationMallocFailedHook();
}
}
#endif
return pvReturn;
}
/*-----------------------------------------------------------*/
void vPortFree( void *pv )
{
unsigned char *puc = ( unsigned char * ) pv;
xBlockLink *pxLink;
if( pv != NULL )
{
/* The memory being freed will have an xBlockLink structure immediately
before it. */
puc -= heapSTRUCT_SIZE;
/* This unexpected casting is to keep some compilers from issuing
byte alignment warnings. */
pxLink = ( void * ) puc;
vTaskSuspendAll();
{
/* Add this block to the list of free blocks. */
prvInsertBlockIntoFreeList( ( ( xBlockLink * ) pxLink ) );
xFreeBytesRemaining += pxLink->xBlockSize;
traceFREE( pv, pxLink->xBlockSize );
}
xTaskResumeAll();
}
}
/*-----------------------------------------------------------*/
size_t xPortGetFreeHeapSize( void )
{
return xFreeBytesRemaining;
}
/*-----------------------------------------------------------*/
void vPortInitialiseBlocks( void )
{
/* This just exists to keep the linker quiet. */
}
/*-----------------------------------------------------------*/
static void prvHeapInit( void )
{
xBlockLink *pxFirstFreeBlock;
unsigned char *pucAlignedHeap;
/* Ensure the heap starts on a correctly aligned boundary. */
pucAlignedHeap = ( unsigned char * ) ( ( ( portPOINTER_SIZE_TYPE ) &ucHeap[ portBYTE_ALIGNMENT ] ) & ( ( portPOINTER_SIZE_TYPE ) ~portBYTE_ALIGNMENT_MASK ) );
/* xStart is used to hold a pointer to the first item in the list of free
blocks. The void cast is used to prevent compiler warnings. */
xStart.pxNextFreeBlock = ( void * ) pucAlignedHeap;
xStart.xBlockSize = ( size_t ) 0;
/* xEnd is used to mark the end of the list of free blocks. */
xEnd.xBlockSize = configADJUSTED_HEAP_SIZE;
xEnd.pxNextFreeBlock = NULL;
/* To start with there is a single free block that is sized to take up the
entire heap space. */
pxFirstFreeBlock = ( void * ) pucAlignedHeap;
pxFirstFreeBlock->xBlockSize = configADJUSTED_HEAP_SIZE;
pxFirstFreeBlock->pxNextFreeBlock = &xEnd;
}
/*-----------------------------------------------------------*/

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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
#ifndef INC_FREERTOS_H
#define INC_FREERTOS_H
/*
* Include the generic headers required for the FreeRTOS port being used.
*/
#include <stddef.h>
/* Basic FreeRTOS definitions. */
#include "projdefs.h"
/* Application specific configuration options. */
#include "FreeRTOSConfig.h"
/* configUSE_PORT_OPTIMISED_TASK_SELECTION must be defined before portable.h
is included as it is used by the port layer. */
#ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
#define configUSE_PORT_OPTIMISED_TASK_SELECTION 0
#endif
/* Definitions specific to the port being used. */
#include "portable.h"
/* Defines the prototype to which the application task hook function must
conform. */
typedef portBASE_TYPE (*pdTASK_HOOK_CODE)( void * );
/*
* Check all the required application specific macros have been defined.
* These macros are application specific and (as downloaded) are defined
* within FreeRTOSConfig.h.
*/
#ifndef configUSE_PREEMPTION
#error Missing definition: configUSE_PREEMPTION should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef configUSE_IDLE_HOOK
#error Missing definition: configUSE_IDLE_HOOK should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef configUSE_TICK_HOOK
#error Missing definition: configUSE_TICK_HOOK should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef configUSE_CO_ROUTINES
#error Missing definition: configUSE_CO_ROUTINES should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_vTaskPrioritySet
#error Missing definition: INCLUDE_vTaskPrioritySet should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_uxTaskPriorityGet
#error Missing definition: INCLUDE_uxTaskPriorityGet should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_vTaskDelete
#error Missing definition: INCLUDE_vTaskDelete should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_vTaskSuspend
#error Missing definition: INCLUDE_vTaskSuspend should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_vTaskDelayUntil
#error Missing definition: INCLUDE_vTaskDelayUntil should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_vTaskDelay
#error Missing definition: INCLUDE_vTaskDelay should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef configUSE_16_BIT_TICKS
#error Missing definition: configUSE_16_BIT_TICKS should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_xTaskGetIdleTaskHandle
#define INCLUDE_xTaskGetIdleTaskHandle 0
#endif
#ifndef INCLUDE_xTimerGetTimerDaemonTaskHandle
#define INCLUDE_xTimerGetTimerDaemonTaskHandle 0
#endif
#ifndef INCLUDE_xQueueGetMutexHolder
#define INCLUDE_xQueueGetMutexHolder 0
#endif
#ifndef INCLUDE_xSemaphoreGetMutexHolder
#define INCLUDE_xSemaphoreGetMutexHolder INCLUDE_xQueueGetMutexHolder
#endif
#ifndef INCLUDE_pcTaskGetTaskName
#define INCLUDE_pcTaskGetTaskName 0
#endif
#ifndef configUSE_APPLICATION_TASK_TAG
#define configUSE_APPLICATION_TASK_TAG 0
#endif
#ifndef INCLUDE_uxTaskGetStackHighWaterMark
#define INCLUDE_uxTaskGetStackHighWaterMark 0
#endif
#ifndef INCLUDE_eTaskGetState
#define INCLUDE_eTaskGetState 0
#endif
#ifndef configUSE_RECURSIVE_MUTEXES
#define configUSE_RECURSIVE_MUTEXES 0
#endif
#ifndef configUSE_MUTEXES
#define configUSE_MUTEXES 0
#endif
#ifndef configUSE_TIMERS
#define configUSE_TIMERS 0
#endif
#ifndef configUSE_COUNTING_SEMAPHORES
#define configUSE_COUNTING_SEMAPHORES 0
#endif
#ifndef configUSE_ALTERNATIVE_API
#define configUSE_ALTERNATIVE_API 0
#endif
#ifndef portCRITICAL_NESTING_IN_TCB
#define portCRITICAL_NESTING_IN_TCB 0
#endif
#ifndef configMAX_TASK_NAME_LEN
#define configMAX_TASK_NAME_LEN 16
#endif
#ifndef configIDLE_SHOULD_YIELD
#define configIDLE_SHOULD_YIELD 1
#endif
#if configMAX_TASK_NAME_LEN < 1
#error configMAX_TASK_NAME_LEN must be set to a minimum of 1 in FreeRTOSConfig.h
#endif
#ifndef INCLUDE_xTaskResumeFromISR
#define INCLUDE_xTaskResumeFromISR 1
#endif
#ifndef configASSERT
#define configASSERT( x )
#define configASSERT_DEFINED 0
#else
#define configASSERT_DEFINED 1
#endif
/* The timers module relies on xTaskGetSchedulerState(). */
#if configUSE_TIMERS == 1
#ifndef configTIMER_TASK_PRIORITY
#error If configUSE_TIMERS is set to 1 then configTIMER_TASK_PRIORITY must also be defined.
#endif /* configTIMER_TASK_PRIORITY */
#ifndef configTIMER_QUEUE_LENGTH
#error If configUSE_TIMERS is set to 1 then configTIMER_QUEUE_LENGTH must also be defined.
#endif /* configTIMER_QUEUE_LENGTH */
#ifndef configTIMER_TASK_STACK_DEPTH
#error If configUSE_TIMERS is set to 1 then configTIMER_TASK_STACK_DEPTH must also be defined.
#endif /* configTIMER_TASK_STACK_DEPTH */
#endif /* configUSE_TIMERS */
#ifndef INCLUDE_xTaskGetSchedulerState
#define INCLUDE_xTaskGetSchedulerState 0
#endif
#ifndef INCLUDE_xTaskGetCurrentTaskHandle
#define INCLUDE_xTaskGetCurrentTaskHandle 0
#endif
#ifndef portSET_INTERRUPT_MASK_FROM_ISR
#define portSET_INTERRUPT_MASK_FROM_ISR() 0
#endif
#ifndef portCLEAR_INTERRUPT_MASK_FROM_ISR
#define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedStatusValue ) ( void ) uxSavedStatusValue
#endif
#ifndef portCLEAN_UP_TCB
#define portCLEAN_UP_TCB( pxTCB ) ( void ) pxTCB
#endif
#ifndef portSETUP_TCB
#define portSETUP_TCB( pxTCB ) ( void ) pxTCB
#endif
#ifndef configQUEUE_REGISTRY_SIZE
#define configQUEUE_REGISTRY_SIZE 0U
#endif
#if ( configQUEUE_REGISTRY_SIZE < 1 )
#define vQueueAddToRegistry( xQueue, pcName )
#define vQueueUnregisterQueue( xQueue )
#endif
#ifndef portPOINTER_SIZE_TYPE
#define portPOINTER_SIZE_TYPE unsigned long
#endif
/* Remove any unused trace macros. */
#ifndef traceSTART
/* Used to perform any necessary initialisation - for example, open a file
into which trace is to be written. */
#define traceSTART()
#endif
#ifndef traceEND
/* Use to close a trace, for example close a file into which trace has been
written. */
#define traceEND()
#endif
#ifndef traceTASK_SWITCHED_IN
/* Called after a task has been selected to run. pxCurrentTCB holds a pointer
to the task control block of the selected task. */
#define traceTASK_SWITCHED_IN()
#endif
#ifndef traceINCREASE_TICK_COUNT
/* Called before stepping the tick count after waking from tickless idle
sleep. */
#define traceINCREASE_TICK_COUNT( x )
#endif
#ifndef traceLOW_POWER_IDLE_BEGIN
/* Called immediately before entering tickless idle. */
#define traceLOW_POWER_IDLE_BEGIN()
#endif
#ifndef traceLOW_POWER_IDLE_END
/* Called when returning to the Idle task after a tickless idle. */
#define traceLOW_POWER_IDLE_END()
#endif
#ifndef traceTASK_SWITCHED_OUT
/* Called before a task has been selected to run. pxCurrentTCB holds a pointer
to the task control block of the task being switched out. */
#define traceTASK_SWITCHED_OUT()
#endif
#ifndef traceTASK_PRIORITY_INHERIT
/* Called when a task attempts to take a mutex that is already held by a
lower priority task. pxTCBOfMutexHolder is a pointer to the TCB of the task
that holds the mutex. uxInheritedPriority is the priority the mutex holder
will inherit (the priority of the task that is attempting to obtain the
muted. */
#define traceTASK_PRIORITY_INHERIT( pxTCBOfMutexHolder, uxInheritedPriority )
#endif
#ifndef traceTASK_PRIORITY_DISINHERIT
/* Called when a task releases a mutex, the holding of which had resulted in
the task inheriting the priority of a higher priority task.
pxTCBOfMutexHolder is a pointer to the TCB of the task that is releasing the
mutex. uxOriginalPriority is the task's configured (base) priority. */
#define traceTASK_PRIORITY_DISINHERIT( pxTCBOfMutexHolder, uxOriginalPriority )
#endif
#ifndef traceBLOCKING_ON_QUEUE_RECEIVE
/* Task is about to block because it cannot read from a
queue/mutex/semaphore. pxQueue is a pointer to the queue/mutex/semaphore
upon which the read was attempted. pxCurrentTCB points to the TCB of the
task that attempted the read. */
#define traceBLOCKING_ON_QUEUE_RECEIVE( pxQueue )
#endif
#ifndef traceBLOCKING_ON_QUEUE_SEND
/* Task is about to block because it cannot write to a
queue/mutex/semaphore. pxQueue is a pointer to the queue/mutex/semaphore
upon which the write was attempted. pxCurrentTCB points to the TCB of the
task that attempted the write. */
#define traceBLOCKING_ON_QUEUE_SEND( pxQueue )
#endif
#ifndef configCHECK_FOR_STACK_OVERFLOW
#define configCHECK_FOR_STACK_OVERFLOW 0
#endif
/* The following event macros are embedded in the kernel API calls. */
#ifndef traceMOVED_TASK_TO_READY_STATE
#define traceMOVED_TASK_TO_READY_STATE( pxTCB )
#endif
#ifndef traceQUEUE_CREATE
#define traceQUEUE_CREATE( pxNewQueue )
#endif
#ifndef traceQUEUE_CREATE_FAILED
#define traceQUEUE_CREATE_FAILED( ucQueueType )
#endif
#ifndef traceCREATE_MUTEX
#define traceCREATE_MUTEX( pxNewQueue )
#endif
#ifndef traceCREATE_MUTEX_FAILED
#define traceCREATE_MUTEX_FAILED()
#endif
#ifndef traceGIVE_MUTEX_RECURSIVE
#define traceGIVE_MUTEX_RECURSIVE( pxMutex )
#endif
#ifndef traceGIVE_MUTEX_RECURSIVE_FAILED
#define traceGIVE_MUTEX_RECURSIVE_FAILED( pxMutex )
#endif
#ifndef traceTAKE_MUTEX_RECURSIVE
#define traceTAKE_MUTEX_RECURSIVE( pxMutex )
#endif
#ifndef traceTAKE_MUTEX_RECURSIVE_FAILED
#define traceTAKE_MUTEX_RECURSIVE_FAILED( pxMutex )
#endif
#ifndef traceCREATE_COUNTING_SEMAPHORE
#define traceCREATE_COUNTING_SEMAPHORE()
#endif
#ifndef traceCREATE_COUNTING_SEMAPHORE_FAILED
#define traceCREATE_COUNTING_SEMAPHORE_FAILED()
#endif
#ifndef traceQUEUE_SEND
#define traceQUEUE_SEND( pxQueue )
#endif
#ifndef traceQUEUE_SEND_FAILED
#define traceQUEUE_SEND_FAILED( pxQueue )
#endif
#ifndef traceQUEUE_RECEIVE
#define traceQUEUE_RECEIVE( pxQueue )
#endif
#ifndef traceQUEUE_PEEK
#define traceQUEUE_PEEK( pxQueue )
#endif
#ifndef traceQUEUE_PEEK_FROM_ISR
#define traceQUEUE_PEEK_FROM_ISR( pxQueue )
#endif
#ifndef traceQUEUE_RECEIVE_FAILED
#define traceQUEUE_RECEIVE_FAILED( pxQueue )
#endif
#ifndef traceQUEUE_SEND_FROM_ISR
#define traceQUEUE_SEND_FROM_ISR( pxQueue )
#endif
#ifndef traceQUEUE_SEND_FROM_ISR_FAILED
#define traceQUEUE_SEND_FROM_ISR_FAILED( pxQueue )
#endif
#ifndef traceQUEUE_RECEIVE_FROM_ISR
#define traceQUEUE_RECEIVE_FROM_ISR( pxQueue )
#endif
#ifndef traceQUEUE_RECEIVE_FROM_ISR_FAILED
#define traceQUEUE_RECEIVE_FROM_ISR_FAILED( pxQueue )
#endif
#ifndef traceQUEUE_PEEK_FROM_ISR_FAILED
#define traceQUEUE_PEEK_FROM_ISR_FAILED( pxQueue )
#endif
#ifndef traceQUEUE_DELETE
#define traceQUEUE_DELETE( pxQueue )
#endif
#ifndef traceTASK_CREATE
#define traceTASK_CREATE( pxNewTCB )
#endif
#ifndef traceTASK_CREATE_FAILED
#define traceTASK_CREATE_FAILED()
#endif
#ifndef traceTASK_DELETE
#define traceTASK_DELETE( pxTaskToDelete )
#endif
#ifndef traceTASK_DELAY_UNTIL
#define traceTASK_DELAY_UNTIL()
#endif
#ifndef traceTASK_DELAY
#define traceTASK_DELAY()
#endif
#ifndef traceTASK_PRIORITY_SET
#define traceTASK_PRIORITY_SET( pxTask, uxNewPriority )
#endif
#ifndef traceTASK_SUSPEND
#define traceTASK_SUSPEND( pxTaskToSuspend )
#endif
#ifndef traceTASK_RESUME
#define traceTASK_RESUME( pxTaskToResume )
#endif
#ifndef traceTASK_RESUME_FROM_ISR
#define traceTASK_RESUME_FROM_ISR( pxTaskToResume )
#endif
#ifndef traceTASK_INCREMENT_TICK
#define traceTASK_INCREMENT_TICK( xTickCount )
#endif
#ifndef traceTIMER_CREATE
#define traceTIMER_CREATE( pxNewTimer )
#endif
#ifndef traceTIMER_CREATE_FAILED
#define traceTIMER_CREATE_FAILED()
#endif
#ifndef traceTIMER_COMMAND_SEND
#define traceTIMER_COMMAND_SEND( xTimer, xMessageID, xMessageValueValue, xReturn )
#endif
#ifndef traceTIMER_EXPIRED
#define traceTIMER_EXPIRED( pxTimer )
#endif
#ifndef traceTIMER_COMMAND_RECEIVED
#define traceTIMER_COMMAND_RECEIVED( pxTimer, xMessageID, xMessageValue )
#endif
#ifndef traceMALLOC
#define traceMALLOC( pvAddress, uiSize )
#endif
#ifndef traceFREE
#define traceFREE( pvAddress, uiSize )
#endif
#ifndef configGENERATE_RUN_TIME_STATS
#define configGENERATE_RUN_TIME_STATS 0
#endif
#if ( configGENERATE_RUN_TIME_STATS == 1 )
#ifndef portCONFIGURE_TIMER_FOR_RUN_TIME_STATS
#error If configGENERATE_RUN_TIME_STATS is defined then portCONFIGURE_TIMER_FOR_RUN_TIME_STATS must also be defined. portCONFIGURE_TIMER_FOR_RUN_TIME_STATS should call a port layer function to setup a peripheral timer/counter that can then be used as the run time counter time base.
#endif /* portCONFIGURE_TIMER_FOR_RUN_TIME_STATS */
#ifndef portGET_RUN_TIME_COUNTER_VALUE
#ifndef portALT_GET_RUN_TIME_COUNTER_VALUE
#error If configGENERATE_RUN_TIME_STATS is defined then either portGET_RUN_TIME_COUNTER_VALUE or portALT_GET_RUN_TIME_COUNTER_VALUE must also be defined. See the examples provided and the FreeRTOS web site for more information.
#endif /* portALT_GET_RUN_TIME_COUNTER_VALUE */
#endif /* portGET_RUN_TIME_COUNTER_VALUE */
#endif /* configGENERATE_RUN_TIME_STATS */
#ifndef portCONFIGURE_TIMER_FOR_RUN_TIME_STATS
#define portCONFIGURE_TIMER_FOR_RUN_TIME_STATS()
#endif
#ifndef configUSE_MALLOC_FAILED_HOOK
#define configUSE_MALLOC_FAILED_HOOK 0
#endif
#ifndef portPRIVILEGE_BIT
#define portPRIVILEGE_BIT ( ( unsigned portBASE_TYPE ) 0x00 )
#endif
#ifndef portYIELD_WITHIN_API
#define portYIELD_WITHIN_API portYIELD
#endif
#ifndef pvPortMallocAligned
#define pvPortMallocAligned( x, puxStackBuffer ) ( ( ( puxStackBuffer ) == NULL ) ? ( pvPortMalloc( ( x ) ) ) : ( puxStackBuffer ) )
#endif
#ifndef vPortFreeAligned
#define vPortFreeAligned( pvBlockToFree ) vPortFree( pvBlockToFree )
#endif
#ifndef portSUPPRESS_TICKS_AND_SLEEP
#define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime )
#endif
#ifndef configEXPECTED_IDLE_TIME_BEFORE_SLEEP
#define configEXPECTED_IDLE_TIME_BEFORE_SLEEP 2
#endif
#if configEXPECTED_IDLE_TIME_BEFORE_SLEEP < 2
#error configEXPECTED_IDLE_TIME_BEFORE_SLEEP must not be less than 2
#endif
#ifndef configUSE_TICKLESS_IDLE
#define configUSE_TICKLESS_IDLE 0
#endif
#ifndef configPRE_SLEEP_PROCESSING
#define configPRE_SLEEP_PROCESSING( x )
#endif
#ifndef configPOST_SLEEP_PROCESSING
#define configPOST_SLEEP_PROCESSING( x )
#endif
#ifndef configUSE_QUEUE_SETS
#define configUSE_QUEUE_SETS 0
#endif
#ifndef portTASK_USES_FLOATING_POINT
#define portTASK_USES_FLOATING_POINT()
#endif
#ifndef configUSE_TIME_SLICING
#define configUSE_TIME_SLICING 1
#endif
#ifndef configINCLUDE_APPLICATION_DEFINED_PRIVILEGED_FUNCTIONS
#define configINCLUDE_APPLICATION_DEFINED_PRIVILEGED_FUNCTIONS 0
#endif
#ifndef configUSE_NEWLIB_REENTRANT
#define configUSE_NEWLIB_REENTRANT 0
#endif
#ifndef configUSE_STATS_FORMATTING_FUNCTIONS
#define configUSE_STATS_FORMATTING_FUNCTIONS 0
#endif
#ifndef portASSERT_IF_INTERRUPT_PRIORITY_INVALID
#define portASSERT_IF_INTERRUPT_PRIORITY_INVALID()
#endif
/* For backward compatability. */
#define eTaskStateGet eTaskGetState
#endif /* INC_FREERTOS_H */

180
FreeRTOS/include/StackMacros.h Normal file
View File

@ -0,0 +1,180 @@
/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
#ifndef STACK_MACROS_H
#define STACK_MACROS_H
/*
* Call the stack overflow hook function if the stack of the task being swapped
* out is currently overflowed, or looks like it might have overflowed in the
* past.
*
* Setting configCHECK_FOR_STACK_OVERFLOW to 1 will cause the macro to check
* the current stack state only - comparing the current top of stack value to
* the stack limit. Setting configCHECK_FOR_STACK_OVERFLOW to greater than 1
* will also cause the last few stack bytes to be checked to ensure the value
* to which the bytes were set when the task was created have not been
* overwritten. Note this second test does not guarantee that an overflowed
* stack will always be recognised.
*/
/*-----------------------------------------------------------*/
#if( configCHECK_FOR_STACK_OVERFLOW == 0 )
/* FreeRTOSConfig.h is not set to check for stack overflows. */
#define taskFIRST_CHECK_FOR_STACK_OVERFLOW()
#define taskSECOND_CHECK_FOR_STACK_OVERFLOW()
#endif /* configCHECK_FOR_STACK_OVERFLOW == 0 */
/*-----------------------------------------------------------*/
#if( configCHECK_FOR_STACK_OVERFLOW == 1 )
/* FreeRTOSConfig.h is only set to use the first method of
overflow checking. */
#define taskSECOND_CHECK_FOR_STACK_OVERFLOW()
#endif
/*-----------------------------------------------------------*/
#if( ( configCHECK_FOR_STACK_OVERFLOW > 0 ) && ( portSTACK_GROWTH < 0 ) )
/* Only the current stack state is to be checked. */
#define taskFIRST_CHECK_FOR_STACK_OVERFLOW() \
{ \
/* Is the currently saved stack pointer within the stack limit? */ \
if( pxCurrentTCB->pxTopOfStack <= pxCurrentTCB->pxStack ) \
{ \
vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
} \
}
#endif /* configCHECK_FOR_STACK_OVERFLOW > 0 */
/*-----------------------------------------------------------*/
#if( ( configCHECK_FOR_STACK_OVERFLOW > 0 ) && ( portSTACK_GROWTH > 0 ) )
/* Only the current stack state is to be checked. */
#define taskFIRST_CHECK_FOR_STACK_OVERFLOW() \
{ \
\
/* Is the currently saved stack pointer within the stack limit? */ \
if( pxCurrentTCB->pxTopOfStack >= pxCurrentTCB->pxEndOfStack ) \
{ \
vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
} \
}
#endif /* configCHECK_FOR_STACK_OVERFLOW == 1 */
/*-----------------------------------------------------------*/
#if( ( configCHECK_FOR_STACK_OVERFLOW > 1 ) && ( portSTACK_GROWTH < 0 ) )
#define taskSECOND_CHECK_FOR_STACK_OVERFLOW() \
{ \
static const unsigned char ucExpectedStackBytes[] = { tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE }; \
\
\
/* Has the extremity of the task stack ever been written over? */ \
if( memcmp( ( void * ) pxCurrentTCB->pxStack, ( void * ) ucExpectedStackBytes, sizeof( ucExpectedStackBytes ) ) != 0 ) \
{ \
vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
} \
}
#endif /* #if( configCHECK_FOR_STACK_OVERFLOW > 1 ) */
/*-----------------------------------------------------------*/
#if( ( configCHECK_FOR_STACK_OVERFLOW > 1 ) && ( portSTACK_GROWTH > 0 ) )
#define taskSECOND_CHECK_FOR_STACK_OVERFLOW() \
{ \
char *pcEndOfStack = ( char * ) pxCurrentTCB->pxEndOfStack; \
static const unsigned char ucExpectedStackBytes[] = { tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE }; \
\
\
pcEndOfStack -= sizeof( ucExpectedStackBytes ); \
\
/* Has the extremity of the task stack ever been written over? */ \
if( memcmp( ( void * ) pcEndOfStack, ( void * ) ucExpectedStackBytes, sizeof( ucExpectedStackBytes ) ) != 0 ) \
{ \
vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
} \
}
#endif /* #if( configCHECK_FOR_STACK_OVERFLOW > 1 ) */
/*-----------------------------------------------------------*/
#endif /* STACK_MACROS_H */

758
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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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*/
#ifndef CO_ROUTINE_H
#define CO_ROUTINE_H
#ifndef INC_FREERTOS_H
#error "include FreeRTOS.h must appear in source files before include croutine.h"
#endif
#include "list.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Used to hide the implementation of the co-routine control block. The
control block structure however has to be included in the header due to
the macro implementation of the co-routine functionality. */
typedef void * xCoRoutineHandle;
/* Defines the prototype to which co-routine functions must conform. */
typedef void (*crCOROUTINE_CODE)( xCoRoutineHandle, unsigned portBASE_TYPE );
typedef struct corCoRoutineControlBlock
{
crCOROUTINE_CODE pxCoRoutineFunction;
xListItem xGenericListItem; /*< List item used to place the CRCB in ready and blocked queues. */
xListItem xEventListItem; /*< List item used to place the CRCB in event lists. */
unsigned portBASE_TYPE uxPriority; /*< The priority of the co-routine in relation to other co-routines. */
unsigned portBASE_TYPE uxIndex; /*< Used to distinguish between co-routines when multiple co-routines use the same co-routine function. */
unsigned short uxState; /*< Used internally by the co-routine implementation. */
} corCRCB; /* Co-routine control block. Note must be identical in size down to uxPriority with tskTCB. */
/**
* croutine. h
*<pre>
portBASE_TYPE xCoRoutineCreate(
crCOROUTINE_CODE pxCoRoutineCode,
unsigned portBASE_TYPE uxPriority,
unsigned portBASE_TYPE uxIndex
);</pre>
*
* Create a new co-routine and add it to the list of co-routines that are
* ready to run.
*
* @param pxCoRoutineCode Pointer to the co-routine function. Co-routine
* functions require special syntax - see the co-routine section of the WEB
* documentation for more information.
*
* @param uxPriority The priority with respect to other co-routines at which
* the co-routine will run.
*
* @param uxIndex Used to distinguish between different co-routines that
* execute the same function. See the example below and the co-routine section
* of the WEB documentation for further information.
*
* @return pdPASS if the co-routine was successfully created and added to a ready
* list, otherwise an error code defined with ProjDefs.h.
*
* Example usage:
<pre>
// Co-routine to be created.
void vFlashCoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
// This may not be necessary for const variables.
static const char cLedToFlash[ 2 ] = { 5, 6 };
static const portTickType uxFlashRates[ 2 ] = { 200, 400 };
// Must start every co-routine with a call to crSTART();
crSTART( xHandle );
for( ;; )
{
// This co-routine just delays for a fixed period, then toggles
// an LED. Two co-routines are created using this function, so
// the uxIndex parameter is used to tell the co-routine which
// LED to flash and how long to delay. This assumes xQueue has
// already been created.
vParTestToggleLED( cLedToFlash[ uxIndex ] );
crDELAY( xHandle, uxFlashRates[ uxIndex ] );
}
// Must end every co-routine with a call to crEND();
crEND();
}
// Function that creates two co-routines.
void vOtherFunction( void )
{
unsigned char ucParameterToPass;
xTaskHandle xHandle;
// Create two co-routines at priority 0. The first is given index 0
// so (from the code above) toggles LED 5 every 200 ticks. The second
// is given index 1 so toggles LED 6 every 400 ticks.
for( uxIndex = 0; uxIndex < 2; uxIndex++ )
{
xCoRoutineCreate( vFlashCoRoutine, 0, uxIndex );
}
}
</pre>
* \defgroup xCoRoutineCreate xCoRoutineCreate
* \ingroup Tasks
*/
signed portBASE_TYPE xCoRoutineCreate( crCOROUTINE_CODE pxCoRoutineCode, unsigned portBASE_TYPE uxPriority, unsigned portBASE_TYPE uxIndex );
/**
* croutine. h
*<pre>
void vCoRoutineSchedule( void );</pre>
*
* Run a co-routine.
*
* vCoRoutineSchedule() executes the highest priority co-routine that is able
* to run. The co-routine will execute until it either blocks, yields or is
* preempted by a task. Co-routines execute cooperatively so one
* co-routine cannot be preempted by another, but can be preempted by a task.
*
* If an application comprises of both tasks and co-routines then
* vCoRoutineSchedule should be called from the idle task (in an idle task
* hook).
*
* Example usage:
<pre>
// This idle task hook will schedule a co-routine each time it is called.
// The rest of the idle task will execute between co-routine calls.
void vApplicationIdleHook( void )
{
vCoRoutineSchedule();
}
// Alternatively, if you do not require any other part of the idle task to
// execute, the idle task hook can call vCoRoutineScheduler() within an
// infinite loop.
void vApplicationIdleHook( void )
{
for( ;; )
{
vCoRoutineSchedule();
}
}
</pre>
* \defgroup vCoRoutineSchedule vCoRoutineSchedule
* \ingroup Tasks
*/
void vCoRoutineSchedule( void );
/**
* croutine. h
* <pre>
crSTART( xCoRoutineHandle xHandle );</pre>
*
* This macro MUST always be called at the start of a co-routine function.
*
* Example usage:
<pre>
// Co-routine to be created.
void vACoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
static long ulAVariable;
// Must start every co-routine with a call to crSTART();
crSTART( xHandle );
for( ;; )
{
// Co-routine functionality goes here.
}
// Must end every co-routine with a call to crEND();
crEND();
}</pre>
* \defgroup crSTART crSTART
* \ingroup Tasks
*/
#define crSTART( pxCRCB ) switch( ( ( corCRCB * )( pxCRCB ) )->uxState ) { case 0:
/**
* croutine. h
* <pre>
crEND();</pre>
*
* This macro MUST always be called at the end of a co-routine function.
*
* Example usage:
<pre>
// Co-routine to be created.
void vACoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
static long ulAVariable;
// Must start every co-routine with a call to crSTART();
crSTART( xHandle );
for( ;; )
{
// Co-routine functionality goes here.
}
// Must end every co-routine with a call to crEND();
crEND();
}</pre>
* \defgroup crSTART crSTART
* \ingroup Tasks
*/
#define crEND() }
/*
* These macros are intended for internal use by the co-routine implementation
* only. The macros should not be used directly by application writers.
*/
#define crSET_STATE0( xHandle ) ( ( corCRCB * )( xHandle ) )->uxState = (__LINE__ * 2); return; case (__LINE__ * 2):
#define crSET_STATE1( xHandle ) ( ( corCRCB * )( xHandle ) )->uxState = ((__LINE__ * 2)+1); return; case ((__LINE__ * 2)+1):
/**
* croutine. h
*<pre>
crDELAY( xCoRoutineHandle xHandle, portTickType xTicksToDelay );</pre>
*
* Delay a co-routine for a fixed period of time.
*
* crDELAY can only be called from the co-routine function itself - not
* from within a function called by the co-routine function. This is because
* co-routines do not maintain their own stack.
*
* @param xHandle The handle of the co-routine to delay. This is the xHandle
* parameter of the co-routine function.
*
* @param xTickToDelay The number of ticks that the co-routine should delay
* for. The actual amount of time this equates to is defined by
* configTICK_RATE_HZ (set in FreeRTOSConfig.h). The constant portTICK_RATE_MS
* can be used to convert ticks to milliseconds.
*
* Example usage:
<pre>
// Co-routine to be created.
void vACoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
// This may not be necessary for const variables.
// We are to delay for 200ms.
static const xTickType xDelayTime = 200 / portTICK_RATE_MS;
// Must start every co-routine with a call to crSTART();
crSTART( xHandle );
for( ;; )
{
// Delay for 200ms.
crDELAY( xHandle, xDelayTime );
// Do something here.
}
// Must end every co-routine with a call to crEND();
crEND();
}</pre>
* \defgroup crDELAY crDELAY
* \ingroup Tasks
*/
#define crDELAY( xHandle, xTicksToDelay ) \
if( ( xTicksToDelay ) > 0 ) \
{ \
vCoRoutineAddToDelayedList( ( xTicksToDelay ), NULL ); \
} \
crSET_STATE0( ( xHandle ) );
/**
* <pre>
crQUEUE_SEND(
xCoRoutineHandle xHandle,
xQueueHandle pxQueue,
void *pvItemToQueue,
portTickType xTicksToWait,
portBASE_TYPE *pxResult
)</pre>
*
* The macro's crQUEUE_SEND() and crQUEUE_RECEIVE() are the co-routine
* equivalent to the xQueueSend() and xQueueReceive() functions used by tasks.
*
* crQUEUE_SEND and crQUEUE_RECEIVE can only be used from a co-routine whereas
* xQueueSend() and xQueueReceive() can only be used from tasks.
*
* crQUEUE_SEND can only be called from the co-routine function itself - not
* from within a function called by the co-routine function. This is because
* co-routines do not maintain their own stack.
*
* See the co-routine section of the WEB documentation for information on
* passing data between tasks and co-routines and between ISR's and
* co-routines.
*
* @param xHandle The handle of the calling co-routine. This is the xHandle
* parameter of the co-routine function.
*
* @param pxQueue The handle of the queue on which the data will be posted.
* The handle is obtained as the return value when the queue is created using
* the xQueueCreate() API function.
*
* @param pvItemToQueue A pointer to the data being posted onto the queue.
* The number of bytes of each queued item is specified when the queue is
* created. This number of bytes is copied from pvItemToQueue into the queue
* itself.
*
* @param xTickToDelay The number of ticks that the co-routine should block
* to wait for space to become available on the queue, should space not be
* available immediately. The actual amount of time this equates to is defined
* by configTICK_RATE_HZ (set in FreeRTOSConfig.h). The constant
* portTICK_RATE_MS can be used to convert ticks to milliseconds (see example
* below).
*
* @param pxResult The variable pointed to by pxResult will be set to pdPASS if
* data was successfully posted onto the queue, otherwise it will be set to an
* error defined within ProjDefs.h.
*
* Example usage:
<pre>
// Co-routine function that blocks for a fixed period then posts a number onto
// a queue.
static void prvCoRoutineFlashTask( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
static portBASE_TYPE xNumberToPost = 0;
static portBASE_TYPE xResult;
// Co-routines must begin with a call to crSTART().
crSTART( xHandle );
for( ;; )
{
// This assumes the queue has already been created.
crQUEUE_SEND( xHandle, xCoRoutineQueue, &xNumberToPost, NO_DELAY, &xResult );
if( xResult != pdPASS )
{
// The message was not posted!
}
// Increment the number to be posted onto the queue.
xNumberToPost++;
// Delay for 100 ticks.
crDELAY( xHandle, 100 );
}
// Co-routines must end with a call to crEND().
crEND();
}</pre>
* \defgroup crQUEUE_SEND crQUEUE_SEND
* \ingroup Tasks
*/
#define crQUEUE_SEND( xHandle, pxQueue, pvItemToQueue, xTicksToWait, pxResult ) \
{ \
*( pxResult ) = xQueueCRSend( ( pxQueue) , ( pvItemToQueue) , ( xTicksToWait ) ); \
if( *( pxResult ) == errQUEUE_BLOCKED ) \
{ \
crSET_STATE0( ( xHandle ) ); \
*pxResult = xQueueCRSend( ( pxQueue ), ( pvItemToQueue ), 0 ); \
} \
if( *pxResult == errQUEUE_YIELD ) \
{ \
crSET_STATE1( ( xHandle ) ); \
*pxResult = pdPASS; \
} \
}
/**
* croutine. h
* <pre>
crQUEUE_RECEIVE(
xCoRoutineHandle xHandle,
xQueueHandle pxQueue,
void *pvBuffer,
portTickType xTicksToWait,
portBASE_TYPE *pxResult
)</pre>
*
* The macro's crQUEUE_SEND() and crQUEUE_RECEIVE() are the co-routine
* equivalent to the xQueueSend() and xQueueReceive() functions used by tasks.
*
* crQUEUE_SEND and crQUEUE_RECEIVE can only be used from a co-routine whereas
* xQueueSend() and xQueueReceive() can only be used from tasks.
*
* crQUEUE_RECEIVE can only be called from the co-routine function itself - not
* from within a function called by the co-routine function. This is because
* co-routines do not maintain their own stack.
*
* See the co-routine section of the WEB documentation for information on
* passing data between tasks and co-routines and between ISR's and
* co-routines.
*
* @param xHandle The handle of the calling co-routine. This is the xHandle
* parameter of the co-routine function.
*
* @param pxQueue The handle of the queue from which the data will be received.
* The handle is obtained as the return value when the queue is created using
* the xQueueCreate() API function.
*
* @param pvBuffer The buffer into which the received item is to be copied.
* The number of bytes of each queued item is specified when the queue is
* created. This number of bytes is copied into pvBuffer.
*
* @param xTickToDelay The number of ticks that the co-routine should block
* to wait for data to become available from the queue, should data not be
* available immediately. The actual amount of time this equates to is defined
* by configTICK_RATE_HZ (set in FreeRTOSConfig.h). The constant
* portTICK_RATE_MS can be used to convert ticks to milliseconds (see the
* crQUEUE_SEND example).
*
* @param pxResult The variable pointed to by pxResult will be set to pdPASS if
* data was successfully retrieved from the queue, otherwise it will be set to
* an error code as defined within ProjDefs.h.
*
* Example usage:
<pre>
// A co-routine receives the number of an LED to flash from a queue. It
// blocks on the queue until the number is received.
static void prvCoRoutineFlashWorkTask( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
static portBASE_TYPE xResult;
static unsigned portBASE_TYPE uxLEDToFlash;
// All co-routines must start with a call to crSTART().
crSTART( xHandle );
for( ;; )
{
// Wait for data to become available on the queue.
crQUEUE_RECEIVE( xHandle, xCoRoutineQueue, &uxLEDToFlash, portMAX_DELAY, &xResult );
if( xResult == pdPASS )
{
// We received the LED to flash - flash it!
vParTestToggleLED( uxLEDToFlash );
}
}
crEND();
}</pre>
* \defgroup crQUEUE_RECEIVE crQUEUE_RECEIVE
* \ingroup Tasks
*/
#define crQUEUE_RECEIVE( xHandle, pxQueue, pvBuffer, xTicksToWait, pxResult ) \
{ \
*( pxResult ) = xQueueCRReceive( ( pxQueue) , ( pvBuffer ), ( xTicksToWait ) ); \
if( *( pxResult ) == errQUEUE_BLOCKED ) \
{ \
crSET_STATE0( ( xHandle ) ); \
*( pxResult ) = xQueueCRReceive( ( pxQueue) , ( pvBuffer ), 0 ); \
} \
if( *( pxResult ) == errQUEUE_YIELD ) \
{ \
crSET_STATE1( ( xHandle ) ); \
*( pxResult ) = pdPASS; \
} \
}
/**
* croutine. h
* <pre>
crQUEUE_SEND_FROM_ISR(
xQueueHandle pxQueue,
void *pvItemToQueue,
portBASE_TYPE xCoRoutinePreviouslyWoken
)</pre>
*
* The macro's crQUEUE_SEND_FROM_ISR() and crQUEUE_RECEIVE_FROM_ISR() are the
* co-routine equivalent to the xQueueSendFromISR() and xQueueReceiveFromISR()
* functions used by tasks.
*
* crQUEUE_SEND_FROM_ISR() and crQUEUE_RECEIVE_FROM_ISR() can only be used to
* pass data between a co-routine and and ISR, whereas xQueueSendFromISR() and
* xQueueReceiveFromISR() can only be used to pass data between a task and and
* ISR.
*
* crQUEUE_SEND_FROM_ISR can only be called from an ISR to send data to a queue
* that is being used from within a co-routine.
*
* See the co-routine section of the WEB documentation for information on
* passing data between tasks and co-routines and between ISR's and
* co-routines.
*
* @param xQueue The handle to the queue on which the item is to be posted.
*
* @param pvItemToQueue A pointer to the item that is to be placed on the
* queue. The size of the items the queue will hold was defined when the
* queue was created, so this many bytes will be copied from pvItemToQueue
* into the queue storage area.
*
* @param xCoRoutinePreviouslyWoken This is included so an ISR can post onto
* the same queue multiple times from a single interrupt. The first call
* should always pass in pdFALSE. Subsequent calls should pass in
* the value returned from the previous call.
*
* @return pdTRUE if a co-routine was woken by posting onto the queue. This is
* used by the ISR to determine if a context switch may be required following
* the ISR.
*
* Example usage:
<pre>
// A co-routine that blocks on a queue waiting for characters to be received.
static void vReceivingCoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
char cRxedChar;
portBASE_TYPE xResult;
// All co-routines must start with a call to crSTART().
crSTART( xHandle );
for( ;; )
{
// Wait for data to become available on the queue. This assumes the
// queue xCommsRxQueue has already been created!
crQUEUE_RECEIVE( xHandle, xCommsRxQueue, &uxLEDToFlash, portMAX_DELAY, &xResult );
// Was a character received?
if( xResult == pdPASS )
{
// Process the character here.
}
}
// All co-routines must end with a call to crEND().
crEND();
}
// An ISR that uses a queue to send characters received on a serial port to
// a co-routine.
void vUART_ISR( void )
{
char cRxedChar;
portBASE_TYPE xCRWokenByPost = pdFALSE;
// We loop around reading characters until there are none left in the UART.
while( UART_RX_REG_NOT_EMPTY() )
{
// Obtain the character from the UART.
cRxedChar = UART_RX_REG;
// Post the character onto a queue. xCRWokenByPost will be pdFALSE
// the first time around the loop. If the post causes a co-routine
// to be woken (unblocked) then xCRWokenByPost will be set to pdTRUE.
// In this manner we can ensure that if more than one co-routine is
// blocked on the queue only one is woken by this ISR no matter how
// many characters are posted to the queue.
xCRWokenByPost = crQUEUE_SEND_FROM_ISR( xCommsRxQueue, &cRxedChar, xCRWokenByPost );
}
}</pre>
* \defgroup crQUEUE_SEND_FROM_ISR crQUEUE_SEND_FROM_ISR
* \ingroup Tasks
*/
#define crQUEUE_SEND_FROM_ISR( pxQueue, pvItemToQueue, xCoRoutinePreviouslyWoken ) xQueueCRSendFromISR( ( pxQueue ), ( pvItemToQueue ), ( xCoRoutinePreviouslyWoken ) )
/**
* croutine. h
* <pre>
crQUEUE_SEND_FROM_ISR(
xQueueHandle pxQueue,
void *pvBuffer,
portBASE_TYPE * pxCoRoutineWoken
)</pre>
*
* The macro's crQUEUE_SEND_FROM_ISR() and crQUEUE_RECEIVE_FROM_ISR() are the
* co-routine equivalent to the xQueueSendFromISR() and xQueueReceiveFromISR()
* functions used by tasks.
*
* crQUEUE_SEND_FROM_ISR() and crQUEUE_RECEIVE_FROM_ISR() can only be used to
* pass data between a co-routine and and ISR, whereas xQueueSendFromISR() and
* xQueueReceiveFromISR() can only be used to pass data between a task and and
* ISR.
*
* crQUEUE_RECEIVE_FROM_ISR can only be called from an ISR to receive data
* from a queue that is being used from within a co-routine (a co-routine
* posted to the queue).
*
* See the co-routine section of the WEB documentation for information on
* passing data between tasks and co-routines and between ISR's and
* co-routines.
*
* @param xQueue The handle to the queue on which the item is to be posted.
*
* @param pvBuffer A pointer to a buffer into which the received item will be
* placed. The size of the items the queue will hold was defined when the
* queue was created, so this many bytes will be copied from the queue into
* pvBuffer.
*
* @param pxCoRoutineWoken A co-routine may be blocked waiting for space to become
* available on the queue. If crQUEUE_RECEIVE_FROM_ISR causes such a
* co-routine to unblock *pxCoRoutineWoken will get set to pdTRUE, otherwise
* *pxCoRoutineWoken will remain unchanged.
*
* @return pdTRUE an item was successfully received from the queue, otherwise
* pdFALSE.
*
* Example usage:
<pre>
// A co-routine that posts a character to a queue then blocks for a fixed
// period. The character is incremented each time.
static void vSendingCoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// cChar holds its value while this co-routine is blocked and must therefore
// be declared static.
static char cCharToTx = 'a';
portBASE_TYPE xResult;
// All co-routines must start with a call to crSTART().
crSTART( xHandle );
for( ;; )
{
// Send the next character to the queue.
crQUEUE_SEND( xHandle, xCoRoutineQueue, &cCharToTx, NO_DELAY, &xResult );
if( xResult == pdPASS )
{
// The character was successfully posted to the queue.
}
else
{
// Could not post the character to the queue.
}
// Enable the UART Tx interrupt to cause an interrupt in this
// hypothetical UART. The interrupt will obtain the character
// from the queue and send it.
ENABLE_RX_INTERRUPT();
// Increment to the next character then block for a fixed period.
// cCharToTx will maintain its value across the delay as it is
// declared static.
cCharToTx++;
if( cCharToTx > 'x' )
{
cCharToTx = 'a';
}
crDELAY( 100 );
}
// All co-routines must end with a call to crEND().
crEND();
}
// An ISR that uses a queue to receive characters to send on a UART.
void vUART_ISR( void )
{
char cCharToTx;
portBASE_TYPE xCRWokenByPost = pdFALSE;
while( UART_TX_REG_EMPTY() )
{
// Are there any characters in the queue waiting to be sent?
// xCRWokenByPost will automatically be set to pdTRUE if a co-routine
// is woken by the post - ensuring that only a single co-routine is
// woken no matter how many times we go around this loop.
if( crQUEUE_RECEIVE_FROM_ISR( pxQueue, &cCharToTx, &xCRWokenByPost ) )
{
SEND_CHARACTER( cCharToTx );
}
}
}</pre>
* \defgroup crQUEUE_RECEIVE_FROM_ISR crQUEUE_RECEIVE_FROM_ISR
* \ingroup Tasks
*/
#define crQUEUE_RECEIVE_FROM_ISR( pxQueue, pvBuffer, pxCoRoutineWoken ) xQueueCRReceiveFromISR( ( pxQueue ), ( pvBuffer ), ( pxCoRoutineWoken ) )
/*
* This function is intended for internal use by the co-routine macros only.
* The macro nature of the co-routine implementation requires that the
* prototype appears here. The function should not be used by application
* writers.
*
* Removes the current co-routine from its ready list and places it in the
* appropriate delayed list.
*/
void vCoRoutineAddToDelayedList( portTickType xTicksToDelay, xList *pxEventList );
/*
* This function is intended for internal use by the queue implementation only.
* The function should not be used by application writers.
*
* Removes the highest priority co-routine from the event list and places it in
* the pending ready list.
*/
signed portBASE_TYPE xCoRoutineRemoveFromEventList( const xList *pxEventList );
#ifdef __cplusplus
}
#endif
#endif /* CO_ROUTINE_H */

379
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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
/*
* This is the list implementation used by the scheduler. While it is tailored
* heavily for the schedulers needs, it is also available for use by
* application code.
*
* xLists can only store pointers to xListItems. Each xListItem contains a
* numeric value (xItemValue). Most of the time the lists are sorted in
* descending item value order.
*
* Lists are created already containing one list item. The value of this
* item is the maximum possible that can be stored, it is therefore always at
* the end of the list and acts as a marker. The list member pxHead always
* points to this marker - even though it is at the tail of the list. This
* is because the tail contains a wrap back pointer to the true head of
* the list.
*
* In addition to it's value, each list item contains a pointer to the next
* item in the list (pxNext), a pointer to the list it is in (pxContainer)
* and a pointer to back to the object that contains it. These later two
* pointers are included for efficiency of list manipulation. There is
* effectively a two way link between the object containing the list item and
* the list item itself.
*
*
* \page ListIntroduction List Implementation
* \ingroup FreeRTOSIntro
*/
#ifndef LIST_H
#define LIST_H
/*
* The list structure members are modified from within interrupts, and therefore
* by rights should be declared volatile. However, they are only modified in a
* functionally atomic way (within critical sections of with the scheduler
* suspended) and are either passed by reference into a function or indexed via
* a volatile variable. Therefore, in all use cases tested so far, the volatile
* qualifier can be omitted in order to provide a moderate performance
* improvement without adversely affecting functional behaviour. The assembly
* instructions generated by the IAR, ARM and GCC compilers when the respective
* compiler's options were set for maximum optimisation has been inspected and
* deemed to be as intended. That said, as compiler technology advances, and
* especially if aggressive cross module optimisation is used (a use case that
* has not been exercised to any great extend) then it is feasible that the
* volatile qualifier will be needed for correct optimisation. It is expected
* that a compiler removing essential code because, without the volatile
* qualifier on the list structure members and with aggressive cross module
* optimisation, the compiler deemed the code unnecessary will result in
* complete and obvious failure of the scheduler. If this is ever experienced
* then the volatile qualifier can be inserted in the relevant places within the
* list structures by simply defining configLIST_VOLATILE to volatile in
* FreeRTOSConfig.h (as per the example at the bottom of this comment block).
* If configLIST_VOLATILE is not defined then the preprocessor directives below
* will simply #define configLIST_VOLATILE away completely.
*
* To use volatile list structure members then add the following line to
* FreeRTOSConfig.h (without the quotes):
* "#define configLIST_VOLATILE volatile"
*/
#ifndef configLIST_VOLATILE
#define configLIST_VOLATILE
#endif /* configSUPPORT_CROSS_MODULE_OPTIMISATION */
#ifdef __cplusplus
extern "C" {
#endif
/*
* Definition of the only type of object that a list can contain.
*/
struct xLIST_ITEM
{
configLIST_VOLATILE portTickType xItemValue; /*< The value being listed. In most cases this is used to sort the list in descending order. */
struct xLIST_ITEM * configLIST_VOLATILE pxNext; /*< Pointer to the next xListItem in the list. */
struct xLIST_ITEM * configLIST_VOLATILE pxPrevious;/*< Pointer to the previous xListItem in the list. */
void * pvOwner; /*< Pointer to the object (normally a TCB) that contains the list item. There is therefore a two way link between the object containing the list item and the list item itself. */
void * configLIST_VOLATILE pvContainer; /*< Pointer to the list in which this list item is placed (if any). */
};
typedef struct xLIST_ITEM xListItem; /* For some reason lint wants this as two separate definitions. */
struct xMINI_LIST_ITEM
{
configLIST_VOLATILE portTickType xItemValue;
struct xLIST_ITEM * configLIST_VOLATILE pxNext;
struct xLIST_ITEM * configLIST_VOLATILE pxPrevious;
};
typedef struct xMINI_LIST_ITEM xMiniListItem;
/*
* Definition of the type of queue used by the scheduler.
*/
typedef struct xLIST
{
configLIST_VOLATILE unsigned portBASE_TYPE uxNumberOfItems;
xListItem * configLIST_VOLATILE pxIndex; /*< Used to walk through the list. Points to the last item returned by a call to pvListGetOwnerOfNextEntry (). */
xMiniListItem xListEnd; /*< List item that contains the maximum possible item value meaning it is always at the end of the list and is therefore used as a marker. */
} xList;
/*
* Access macro to set the owner of a list item. The owner of a list item
* is the object (usually a TCB) that contains the list item.
*
* \page listSET_LIST_ITEM_OWNER listSET_LIST_ITEM_OWNER
* \ingroup LinkedList
*/
#define listSET_LIST_ITEM_OWNER( pxListItem, pxOwner ) ( ( pxListItem )->pvOwner = ( void * ) ( pxOwner ) )
/*
* Access macro to get the owner of a list item. The owner of a list item
* is the object (usually a TCB) that contains the list item.
*
* \page listSET_LIST_ITEM_OWNER listSET_LIST_ITEM_OWNER
* \ingroup LinkedList
*/
#define listGET_LIST_ITEM_OWNER( pxListItem ) ( pxListItem )->pvOwner
/*
* Access macro to set the value of the list item. In most cases the value is
* used to sort the list in descending order.
*
* \page listSET_LIST_ITEM_VALUE listSET_LIST_ITEM_VALUE
* \ingroup LinkedList
*/
#define listSET_LIST_ITEM_VALUE( pxListItem, xValue ) ( ( pxListItem )->xItemValue = ( xValue ) )
/*
* Access macro to retrieve the value of the list item. The value can
* represent anything - for example a the priority of a task, or the time at
* which a task should be unblocked.
*
* \page listGET_LIST_ITEM_VALUE listGET_LIST_ITEM_VALUE
* \ingroup LinkedList
*/
#define listGET_LIST_ITEM_VALUE( pxListItem ) ( ( pxListItem )->xItemValue )
/*
* Access macro the retrieve the value of the list item at the head of a given
* list.
*
* \page listGET_LIST_ITEM_VALUE listGET_LIST_ITEM_VALUE
* \ingroup LinkedList
*/
#define listGET_ITEM_VALUE_OF_HEAD_ENTRY( pxList ) ( (&( ( pxList )->xListEnd ))->pxNext->xItemValue )
/*
* Access macro to determine if a list contains any items. The macro will
* only have the value true if the list is empty.
*
* \page listLIST_IS_EMPTY listLIST_IS_EMPTY
* \ingroup LinkedList
*/
#define listLIST_IS_EMPTY( pxList ) ( ( portBASE_TYPE ) ( ( pxList )->uxNumberOfItems == ( unsigned portBASE_TYPE ) 0 ) )
/*
* Access macro to return the number of items in the list.
*/
#define listCURRENT_LIST_LENGTH( pxList ) ( ( pxList )->uxNumberOfItems )
/*
* Access function to obtain the owner of the next entry in a list.
*
* The list member pxIndex is used to walk through a list. Calling
* listGET_OWNER_OF_NEXT_ENTRY increments pxIndex to the next item in the list
* and returns that entries pxOwner parameter. Using multiple calls to this
* function it is therefore possible to move through every item contained in
* a list.
*
* The pxOwner parameter of a list item is a pointer to the object that owns
* the list item. In the scheduler this is normally a task control block.
* The pxOwner parameter effectively creates a two way link between the list
* item and its owner.
*
* @param pxList The list from which the next item owner is to be returned.
*
* \page listGET_OWNER_OF_NEXT_ENTRY listGET_OWNER_OF_NEXT_ENTRY
* \ingroup LinkedList
*/
#define listGET_OWNER_OF_NEXT_ENTRY( pxTCB, pxList ) \
{ \
xList * const pxConstList = ( pxList ); \
/* Increment the index to the next item and return the item, ensuring */ \
/* we don't return the marker used at the end of the list. */ \
( pxConstList )->pxIndex = ( pxConstList )->pxIndex->pxNext; \
if( ( void * ) ( pxConstList )->pxIndex == ( void * ) &( ( pxConstList )->xListEnd ) ) \
{ \
( pxConstList )->pxIndex = ( pxConstList )->pxIndex->pxNext; \
} \
( pxTCB ) = ( pxConstList )->pxIndex->pvOwner; \
}
/*
* Access function to obtain the owner of the first entry in a list. Lists
* are normally sorted in ascending item value order.
*
* This function returns the pxOwner member of the first item in the list.
* The pxOwner parameter of a list item is a pointer to the object that owns
* the list item. In the scheduler this is normally a task control block.
* The pxOwner parameter effectively creates a two way link between the list
* item and its owner.
*
* @param pxList The list from which the owner of the head item is to be
* returned.
*
* \page listGET_OWNER_OF_HEAD_ENTRY listGET_OWNER_OF_HEAD_ENTRY
* \ingroup LinkedList
*/
#define listGET_OWNER_OF_HEAD_ENTRY( pxList ) ( (&( ( pxList )->xListEnd ))->pxNext->pvOwner )
/*
* Check to see if a list item is within a list. The list item maintains a
* "container" pointer that points to the list it is in. All this macro does
* is check to see if the container and the list match.
*
* @param pxList The list we want to know if the list item is within.
* @param pxListItem The list item we want to know if is in the list.
* @return pdTRUE is the list item is in the list, otherwise pdFALSE.
* pointer against
*/
#define listIS_CONTAINED_WITHIN( pxList, pxListItem ) ( ( portBASE_TYPE ) ( ( pxListItem )->pvContainer == ( void * ) ( pxList ) ) )
/*
* Return the list a list item is contained within (referenced from).
*
* @param pxListItem The list item being queried.
* @return A pointer to the xList object that references the pxListItem
*/
#define listLIST_ITEM_CONTAINER( pxListItem ) ( ( pxListItem )->pvContainer )
/*
* This provides a crude means of knowing if a list has been initialised, as
* pxList->xListEnd.xItemValue is set to portMAX_DELAY by the vListInitialise()
* function.
*/
#define listLIST_IS_INITIALISED( pxList ) ( ( pxList )->xListEnd.xItemValue == portMAX_DELAY )
/*
* Must be called before a list is used! This initialises all the members
* of the list structure and inserts the xListEnd item into the list as a
* marker to the back of the list.
*
* @param pxList Pointer to the list being initialised.
*
* \page vListInitialise vListInitialise
* \ingroup LinkedList
*/
void vListInitialise( xList * const pxList );
/*
* Must be called before a list item is used. This sets the list container to
* null so the item does not think that it is already contained in a list.
*
* @param pxItem Pointer to the list item being initialised.
*
* \page vListInitialiseItem vListInitialiseItem
* \ingroup LinkedList
*/
void vListInitialiseItem( xListItem * const pxItem );
/*
* Insert a list item into a list. The item will be inserted into the list in
* a position determined by its item value (descending item value order).
*
* @param pxList The list into which the item is to be inserted.
*
* @param pxNewListItem The item to that is to be placed in the list.
*
* \page vListInsert vListInsert
* \ingroup LinkedList
*/
void vListInsert( xList * const pxList, xListItem * const pxNewListItem );
/*
* Insert a list item into a list. The item will be inserted in a position
* such that it will be the last item within the list returned by multiple
* calls to listGET_OWNER_OF_NEXT_ENTRY.
*
* The list member pvIndex is used to walk through a list. Calling
* listGET_OWNER_OF_NEXT_ENTRY increments pvIndex to the next item in the list.
* Placing an item in a list using vListInsertEnd effectively places the item
* in the list position pointed to by pvIndex. This means that every other
* item within the list will be returned by listGET_OWNER_OF_NEXT_ENTRY before
* the pvIndex parameter again points to the item being inserted.
*
* @param pxList The list into which the item is to be inserted.
*
* @param pxNewListItem The list item to be inserted into the list.
*
* \page vListInsertEnd vListInsertEnd
* \ingroup LinkedList
*/
void vListInsertEnd( xList * const pxList, xListItem * const pxNewListItem );
/*
* Remove an item from a list. The list item has a pointer to the list that
* it is in, so only the list item need be passed into the function.
*
* @param uxListRemove The item to be removed. The item will remove itself from
* the list pointed to by it's pxContainer parameter.
*
* @return The number of items that remain in the list after the list item has
* been removed.
*
* \page uxListRemove uxListRemove
* \ingroup LinkedList
*/
unsigned portBASE_TYPE uxListRemove( xListItem * const pxItemToRemove );
#ifdef __cplusplus
}
#endif
#endif

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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
#ifndef MPU_WRAPPERS_H
#define MPU_WRAPPERS_H
/* This file redefines API functions to be called through a wrapper macro, but
only for ports that are using the MPU. */
#ifdef portUSING_MPU_WRAPPERS
/* MPU_WRAPPERS_INCLUDED_FROM_API_FILE will be defined when this file is
included from queue.c or task.c to prevent it from having an effect within
those files. */
#ifndef MPU_WRAPPERS_INCLUDED_FROM_API_FILE
#define xTaskGenericCreate MPU_xTaskGenericCreate
#define vTaskAllocateMPURegions MPU_vTaskAllocateMPURegions
#define vTaskDelete MPU_vTaskDelete
#define vTaskDelayUntil MPU_vTaskDelayUntil
#define vTaskDelay MPU_vTaskDelay
#define uxTaskPriorityGet MPU_uxTaskPriorityGet
#define vTaskPrioritySet MPU_vTaskPrioritySet
#define eTaskGetState MPU_eTaskGetState
#define vTaskSuspend MPU_vTaskSuspend
#define xTaskIsTaskSuspended MPU_xTaskIsTaskSuspended
#define vTaskResume MPU_vTaskResume
#define vTaskSuspendAll MPU_vTaskSuspendAll
#define xTaskResumeAll MPU_xTaskResumeAll
#define xTaskGetTickCount MPU_xTaskGetTickCount
#define uxTaskGetNumberOfTasks MPU_uxTaskGetNumberOfTasks
#define vTaskList MPU_vTaskList
#define vTaskGetRunTimeStats MPU_vTaskGetRunTimeStats
#define vTaskSetApplicationTaskTag MPU_vTaskSetApplicationTaskTag
#define xTaskGetApplicationTaskTag MPU_xTaskGetApplicationTaskTag
#define xTaskCallApplicationTaskHook MPU_xTaskCallApplicationTaskHook
#define uxTaskGetStackHighWaterMark MPU_uxTaskGetStackHighWaterMark
#define xTaskGetCurrentTaskHandle MPU_xTaskGetCurrentTaskHandle
#define xTaskGetSchedulerState MPU_xTaskGetSchedulerState
#define xTaskGetIdleTaskHandle MPU_xTaskGetIdleTaskHandle
#define uxTaskGetSystemState MPU_uxTaskGetSystemState
#define xQueueGenericCreate MPU_xQueueGenericCreate
#define xQueueCreateMutex MPU_xQueueCreateMutex
#define xQueueGiveMutexRecursive MPU_xQueueGiveMutexRecursive
#define xQueueTakeMutexRecursive MPU_xQueueTakeMutexRecursive
#define xQueueCreateCountingSemaphore MPU_xQueueCreateCountingSemaphore
#define xQueueGenericSend MPU_xQueueGenericSend
#define xQueueAltGenericSend MPU_xQueueAltGenericSend
#define xQueueAltGenericReceive MPU_xQueueAltGenericReceive
#define xQueueGenericReceive MPU_xQueueGenericReceive
#define uxQueueMessagesWaiting MPU_uxQueueMessagesWaiting
#define vQueueDelete MPU_vQueueDelete
#define xQueueGenericReset MPU_xQueueGenericReset
#define xQueueCreateSet MPU_xQueueCreateSet
#define xQueueSelectFromSet MPU_xQueueSelectFromSet
#define xQueueAddToSet MPU_xQueueAddToSet
#define xQueueRemoveFromSet MPU_xQueueRemoveFromSet
#define xQueuePeekFromISR MPU_xQueuePeekFromISR
#define pvPortMalloc MPU_pvPortMalloc
#define vPortFree MPU_vPortFree
#define xPortGetFreeHeapSize MPU_xPortGetFreeHeapSize
#define vPortInitialiseBlocks MPU_vPortInitialiseBlocks
#if configQUEUE_REGISTRY_SIZE > 0
#define vQueueAddToRegistry MPU_vQueueAddToRegistry
#define vQueueUnregisterQueue MPU_vQueueUnregisterQueue
#endif
/* Remove the privileged function macro. */
#define PRIVILEGED_FUNCTION
#else /* MPU_WRAPPERS_INCLUDED_FROM_API_FILE */
/* Ensure API functions go in the privileged execution section. */
#define PRIVILEGED_FUNCTION __attribute__((section("privileged_functions")))
#define PRIVILEGED_DATA __attribute__((section("privileged_data")))
#endif /* MPU_WRAPPERS_INCLUDED_FROM_API_FILE */
#else /* portUSING_MPU_WRAPPERS */
#define PRIVILEGED_FUNCTION
#define PRIVILEGED_DATA
#define portUSING_MPU_WRAPPERS 0
#endif /* portUSING_MPU_WRAPPERS */
#endif /* MPU_WRAPPERS_H */

402
FreeRTOS/include/portable.h Normal file
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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
/*-----------------------------------------------------------
* Portable layer API. Each function must be defined for each port.
*----------------------------------------------------------*/
#ifndef PORTABLE_H
#define PORTABLE_H
/* Include the macro file relevant to the port being used. */
#ifdef OPEN_WATCOM_INDUSTRIAL_PC_PORT
#include "..\..\Source\portable\owatcom\16bitdos\pc\portmacro.h"
typedef void ( __interrupt __far *pxISR )();
#endif
#ifdef OPEN_WATCOM_FLASH_LITE_186_PORT
#include "..\..\Source\portable\owatcom\16bitdos\flsh186\portmacro.h"
typedef void ( __interrupt __far *pxISR )();
#endif
#ifdef GCC_MEGA_AVR
#include "../portable/GCC/ATMega323/portmacro.h"
#endif
#ifdef IAR_MEGA_AVR
#include "../portable/IAR/ATMega323/portmacro.h"
#endif
#ifdef MPLAB_PIC24_PORT
#include "..\..\Source\portable\MPLAB\PIC24_dsPIC\portmacro.h"
#endif
#ifdef MPLAB_DSPIC_PORT
#include "..\..\Source\portable\MPLAB\PIC24_dsPIC\portmacro.h"
#endif
#ifdef MPLAB_PIC18F_PORT
#include "..\..\Source\portable\MPLAB\PIC18F\portmacro.h"
#endif
#ifdef MPLAB_PIC32MX_PORT
#include "..\..\Source\portable\MPLAB\PIC32MX\portmacro.h"
#endif
#ifdef _FEDPICC
#include "libFreeRTOS/Include/portmacro.h"
#endif
#ifdef SDCC_CYGNAL
#include "../../Source/portable/SDCC/Cygnal/portmacro.h"
#endif
#ifdef GCC_ARM7
#include "../../Source/portable/GCC/ARM7_LPC2000/portmacro.h"
#endif
#ifdef GCC_ARM7_ECLIPSE
#include "portmacro.h"
#endif
#ifdef ROWLEY_LPC23xx
#include "../../Source/portable/GCC/ARM7_LPC23xx/portmacro.h"
#endif
#ifdef IAR_MSP430
#include "..\..\Source\portable\IAR\MSP430\portmacro.h"
#endif
#ifdef GCC_MSP430
#include "../../Source/portable/GCC/MSP430F449/portmacro.h"
#endif
#ifdef ROWLEY_MSP430
#include "../../Source/portable/Rowley/MSP430F449/portmacro.h"
#endif
#ifdef ARM7_LPC21xx_KEIL_RVDS
#include "..\..\Source\portable\RVDS\ARM7_LPC21xx\portmacro.h"
#endif
#ifdef SAM7_GCC
#include "../../Source/portable/GCC/ARM7_AT91SAM7S/portmacro.h"
#endif
#ifdef SAM7_IAR
#include "..\..\Source\portable\IAR\AtmelSAM7S64\portmacro.h"
#endif
#ifdef SAM9XE_IAR
#include "..\..\Source\portable\IAR\AtmelSAM9XE\portmacro.h"
#endif
#ifdef LPC2000_IAR
#include "..\..\Source\portable\IAR\LPC2000\portmacro.h"
#endif
#ifdef STR71X_IAR
#include "..\..\Source\portable\IAR\STR71x\portmacro.h"
#endif
#ifdef STR75X_IAR
#include "..\..\Source\portable\IAR\STR75x\portmacro.h"
#endif
#ifdef STR75X_GCC
#include "..\..\Source\portable\GCC\STR75x\portmacro.h"
#endif
#ifdef STR91X_IAR
#include "..\..\Source\portable\IAR\STR91x\portmacro.h"
#endif
#ifdef GCC_H8S
#include "../../Source/portable/GCC/H8S2329/portmacro.h"
#endif
#ifdef GCC_AT91FR40008
#include "../../Source/portable/GCC/ARM7_AT91FR40008/portmacro.h"
#endif
#ifdef RVDS_ARMCM3_LM3S102
#include "../../Source/portable/RVDS/ARM_CM3/portmacro.h"
#endif
#ifdef GCC_ARMCM3_LM3S102
#include "../../Source/portable/GCC/ARM_CM3/portmacro.h"
#endif
#ifdef GCC_ARMCM3
#include "../../Source/portable/GCC/ARM_CM3/portmacro.h"
#endif
#ifdef IAR_ARM_CM3
#include "../../Source/portable/IAR/ARM_CM3/portmacro.h"
#endif
#ifdef IAR_ARMCM3_LM
#include "../../Source/portable/IAR/ARM_CM3/portmacro.h"
#endif
#ifdef HCS12_CODE_WARRIOR
#include "../../Source/portable/CodeWarrior/HCS12/portmacro.h"
#endif
#ifdef MICROBLAZE_GCC
#include "../../Source/portable/GCC/MicroBlaze/portmacro.h"
#endif
#ifdef TERN_EE
#include "..\..\Source\portable\Paradigm\Tern_EE\small\portmacro.h"
#endif
#ifdef GCC_HCS12
#include "../../Source/portable/GCC/HCS12/portmacro.h"
#endif
#ifdef GCC_MCF5235
#include "../../Source/portable/GCC/MCF5235/portmacro.h"
#endif
#ifdef COLDFIRE_V2_GCC
#include "../../../Source/portable/GCC/ColdFire_V2/portmacro.h"
#endif
#ifdef COLDFIRE_V2_CODEWARRIOR
#include "../../Source/portable/CodeWarrior/ColdFire_V2/portmacro.h"
#endif
#ifdef GCC_PPC405
#include "../../Source/portable/GCC/PPC405_Xilinx/portmacro.h"
#endif
#ifdef GCC_PPC440
#include "../../Source/portable/GCC/PPC440_Xilinx/portmacro.h"
#endif
#ifdef _16FX_SOFTUNE
#include "..\..\Source\portable\Softune\MB96340\portmacro.h"
#endif
#ifdef BCC_INDUSTRIAL_PC_PORT
/* A short file name has to be used in place of the normal
FreeRTOSConfig.h when using the Borland compiler. */
#include "frconfig.h"
#include "..\portable\BCC\16BitDOS\PC\prtmacro.h"
typedef void ( __interrupt __far *pxISR )();
#endif
#ifdef BCC_FLASH_LITE_186_PORT
/* A short file name has to be used in place of the normal
FreeRTOSConfig.h when using the Borland compiler. */
#include "frconfig.h"
#include "..\portable\BCC\16BitDOS\flsh186\prtmacro.h"
typedef void ( __interrupt __far *pxISR )();
#endif
#ifdef __GNUC__
#ifdef __AVR32_AVR32A__
#include "portmacro.h"
#endif
#endif
#ifdef __ICCAVR32__
#ifdef __CORE__
#if __CORE__ == __AVR32A__
#include "portmacro.h"
#endif
#endif
#endif
#ifdef __91467D
#include "portmacro.h"
#endif
#ifdef __96340
#include "portmacro.h"
#endif
#ifdef __IAR_V850ES_Fx3__
#include "../../Source/portable/IAR/V850ES/portmacro.h"
#endif
#ifdef __IAR_V850ES_Jx3__
#include "../../Source/portable/IAR/V850ES/portmacro.h"
#endif
#ifdef __IAR_V850ES_Jx3_L__
#include "../../Source/portable/IAR/V850ES/portmacro.h"
#endif
#ifdef __IAR_V850ES_Jx2__
#include "../../Source/portable/IAR/V850ES/portmacro.h"
#endif
#ifdef __IAR_V850ES_Hx2__
#include "../../Source/portable/IAR/V850ES/portmacro.h"
#endif
#ifdef __IAR_78K0R_Kx3__
#include "../../Source/portable/IAR/78K0R/portmacro.h"
#endif
#ifdef __IAR_78K0R_Kx3L__
#include "../../Source/portable/IAR/78K0R/portmacro.h"
#endif
/* Catch all to ensure portmacro.h is included in the build. Newer demos
have the path as part of the project options, rather than as relative from
the project location. If portENTER_CRITICAL() has not been defined then
portmacro.h has not yet been included - as every portmacro.h provides a
portENTER_CRITICAL() definition. Check the demo application for your demo
to find the path to the correct portmacro.h file. */
#ifndef portENTER_CRITICAL
#include "portmacro.h"
#endif
#if portBYTE_ALIGNMENT == 8
#define portBYTE_ALIGNMENT_MASK ( 0x0007 )
#endif
#if portBYTE_ALIGNMENT == 4
#define portBYTE_ALIGNMENT_MASK ( 0x0003 )
#endif
#if portBYTE_ALIGNMENT == 2
#define portBYTE_ALIGNMENT_MASK ( 0x0001 )
#endif
#if portBYTE_ALIGNMENT == 1
#define portBYTE_ALIGNMENT_MASK ( 0x0000 )
#endif
#ifndef portBYTE_ALIGNMENT_MASK
#error "Invalid portBYTE_ALIGNMENT definition"
#endif
#ifndef portNUM_CONFIGURABLE_REGIONS
#define portNUM_CONFIGURABLE_REGIONS 1
#endif
#ifdef __cplusplus
extern "C" {
#endif
#include "mpu_wrappers.h"
/*
* Setup the stack of a new task so it is ready to be placed under the
* scheduler control. The registers have to be placed on the stack in
* the order that the port expects to find them.
*
*/
#if( portUSING_MPU_WRAPPERS == 1 )
portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters, portBASE_TYPE xRunPrivileged ) PRIVILEGED_FUNCTION;
#else
portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters ) PRIVILEGED_FUNCTION;
#endif
/*
* Map to the memory management routines required for the port.
*/
void *pvPortMalloc( size_t xSize ) PRIVILEGED_FUNCTION;
void vPortFree( void *pv ) PRIVILEGED_FUNCTION;
void vPortInitialiseBlocks( void ) PRIVILEGED_FUNCTION;
size_t xPortGetFreeHeapSize( void ) PRIVILEGED_FUNCTION;
/*
* Setup the hardware ready for the scheduler to take control. This generally
* sets up a tick interrupt and sets timers for the correct tick frequency.
*/
portBASE_TYPE xPortStartScheduler( void ) PRIVILEGED_FUNCTION;
/*
* Undo any hardware/ISR setup that was performed by xPortStartScheduler() so
* the hardware is left in its original condition after the scheduler stops
* executing.
*/
void vPortEndScheduler( void ) PRIVILEGED_FUNCTION;
/*
* The structures and methods of manipulating the MPU are contained within the
* port layer.
*
* Fills the xMPUSettings structure with the memory region information
* contained in xRegions.
*/
#if( portUSING_MPU_WRAPPERS == 1 )
struct xMEMORY_REGION;
void vPortStoreTaskMPUSettings( xMPU_SETTINGS *xMPUSettings, const struct xMEMORY_REGION * const xRegions, portSTACK_TYPE *pxBottomOfStack, unsigned short usStackDepth ) PRIVILEGED_FUNCTION;
#endif
#ifdef __cplusplus
}
#endif
#endif /* PORTABLE_H */

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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
#ifndef PORTMACRO_H
#define PORTMACRO_H
#ifdef __cplusplus
extern "C" {
#endif
/*-----------------------------------------------------------
* Port specific definitions.
*
* The settings in this file configure FreeRTOS correctly for the
* given hardware and compiler.
*
* These settings should not be altered.
*-----------------------------------------------------------
*/
/* Type definitions. */
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT short
#define portSTACK_TYPE unsigned portLONG
#define portBASE_TYPE long
#if( configUSE_16_BIT_TICKS == 1 )
typedef unsigned portSHORT portTickType;
#define portMAX_DELAY ( portTickType ) 0xffff
#else
typedef unsigned portLONG portTickType;
#define portMAX_DELAY ( portTickType ) 0xffffffff
#endif
/*-----------------------------------------------------------*/
/* Architecture specifics. */
#define portSTACK_GROWTH ( -1 )
#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
#define portBYTE_ALIGNMENT 8
/*-----------------------------------------------------------*/
/* Scheduler utilities. */
extern void vPortYield( void );
#define portNVIC_INT_CTRL_REG ( * ( ( volatile unsigned long * ) 0xe000ed04 ) )
#define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
#define portYIELD() vPortYield()
#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT
#define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
/*-----------------------------------------------------------*/
/* Critical section management. */
extern void vPortEnterCritical( void );
extern void vPortExitCritical( void );
extern unsigned long ulPortSetInterruptMask( void );
extern void vPortClearInterruptMask( unsigned long ulNewMaskValue );
#define portSET_INTERRUPT_MASK_FROM_ISR() ulPortSetInterruptMask()
#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) vPortClearInterruptMask(x)
#define portDISABLE_INTERRUPTS() ulPortSetInterruptMask()
#define portENABLE_INTERRUPTS() vPortClearInterruptMask(0)
#define portENTER_CRITICAL() vPortEnterCritical()
#define portEXIT_CRITICAL() vPortExitCritical()
/*-----------------------------------------------------------*/
/* Task function macros as described on the FreeRTOS.org WEB site. These are
not necessary for to use this port. They are defined so the common demo files
(which build with all the ports) will build. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
/*-----------------------------------------------------------*/
/* Tickless idle/low power functionality. */
#ifndef portSUPPRESS_TICKS_AND_SLEEP
extern void vPortSuppressTicksAndSleep( portTickType xExpectedIdleTime );
#define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
#endif
/*-----------------------------------------------------------*/
/* Architecture specific optimisations. */
#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
/* Generic helper function. */
__attribute__( ( always_inline ) ) static inline unsigned char ucPortCountLeadingZeros( unsigned long ulBitmap )
{
unsigned char ucReturn;
__asm volatile ( "clz %0, %1" : "=r" ( ucReturn ) : "r" ( ulBitmap ) );
return ucReturn;
}
/* Check the configuration. */
#if( configMAX_PRIORITIES > 32 )
#error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
#endif
/* Store/clear the ready priorities in a bit map. */
#define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
#define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
/*-----------------------------------------------------------*/
#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31 - ucPortCountLeadingZeros( ( uxReadyPriorities ) ) )
#endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
/*-----------------------------------------------------------*/
#ifdef configASSERT
void vPortValidateInterruptPriority( void );
#define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
#endif
/* portNOP() is not required by this port. */
#define portNOP()
#ifdef __cplusplus
}
#endif
#endif /* PORTMACRO_H */

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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
#ifndef PROJDEFS_H
#define PROJDEFS_H
/* Defines the prototype to which task functions must conform. */
typedef void (*pdTASK_CODE)( void * );
#define pdFALSE ( ( portBASE_TYPE ) 0 )
#define pdTRUE ( ( portBASE_TYPE ) 1 )
#define pdPASS ( pdTRUE )
#define pdFAIL ( pdFALSE )
#define errQUEUE_EMPTY ( ( portBASE_TYPE ) 0 )
#define errQUEUE_FULL ( ( portBASE_TYPE ) 0 )
/* Error definitions. */
#define errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY ( -1 )
#define errNO_TASK_TO_RUN ( -2 )
#define errQUEUE_BLOCKED ( -4 )
#define errQUEUE_YIELD ( -5 )
#endif /* PROJDEFS_H */

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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
#ifndef SEMAPHORE_H
#define SEMAPHORE_H
#ifndef INC_FREERTOS_H
#error "include FreeRTOS.h" must appear in source files before "include semphr.h"
#endif
#include "queue.h"
typedef xQueueHandle xSemaphoreHandle;
#define semBINARY_SEMAPHORE_QUEUE_LENGTH ( ( unsigned char ) 1U )
#define semSEMAPHORE_QUEUE_ITEM_LENGTH ( ( unsigned char ) 0U )
#define semGIVE_BLOCK_TIME ( ( portTickType ) 0U )
/**
* semphr. h
* <pre>vSemaphoreCreateBinary( xSemaphoreHandle xSemaphore )</pre>
*
* <i>Macro</i> that implements a semaphore by using the existing queue mechanism.
* The queue length is 1 as this is a binary semaphore. The data size is 0
* as we don't want to actually store any data - we just want to know if the
* queue is empty or full.
*
* This type of semaphore can be used for pure synchronisation between tasks or
* between an interrupt and a task. The semaphore need not be given back once
* obtained, so one task/interrupt can continuously 'give' the semaphore while
* another continuously 'takes' the semaphore. For this reason this type of
* semaphore does not use a priority inheritance mechanism. For an alternative
* that does use priority inheritance see xSemaphoreCreateMutex().
*
* @param xSemaphore Handle to the created semaphore. Should be of type xSemaphoreHandle.
*
* Example usage:
<pre>
xSemaphoreHandle xSemaphore;
void vATask( void * pvParameters )
{
// Semaphore cannot be used before a call to vSemaphoreCreateBinary ().
// This is a macro so pass the variable in directly.
vSemaphoreCreateBinary( xSemaphore );
if( xSemaphore != NULL )
{
// The semaphore was created successfully.
// The semaphore can now be used.
}
}
</pre>
* \defgroup vSemaphoreCreateBinary vSemaphoreCreateBinary
* \ingroup Semaphores
*/
#define vSemaphoreCreateBinary( xSemaphore ) \
{ \
( xSemaphore ) = xQueueGenericCreate( ( unsigned portBASE_TYPE ) 1, semSEMAPHORE_QUEUE_ITEM_LENGTH, queueQUEUE_TYPE_BINARY_SEMAPHORE ); \
if( ( xSemaphore ) != NULL ) \
{ \
( void ) xSemaphoreGive( ( xSemaphore ) ); \
} \
}
/**
* semphr. h
* <pre>xSemaphoreTake(
* xSemaphoreHandle xSemaphore,
* portTickType xBlockTime
* )</pre>
*
* <i>Macro</i> to obtain a semaphore. The semaphore must have previously been
* created with a call to vSemaphoreCreateBinary(), xSemaphoreCreateMutex() or
* xSemaphoreCreateCounting().
*
* @param xSemaphore A handle to the semaphore being taken - obtained when
* the semaphore was created.
*
* @param xBlockTime The time in ticks to wait for the semaphore to become
* available. The macro portTICK_RATE_MS can be used to convert this to a
* real time. A block time of zero can be used to poll the semaphore. A block
* time of portMAX_DELAY can be used to block indefinitely (provided
* INCLUDE_vTaskSuspend is set to 1 in FreeRTOSConfig.h).
*
* @return pdTRUE if the semaphore was obtained. pdFALSE
* if xBlockTime expired without the semaphore becoming available.
*
* Example usage:
<pre>
xSemaphoreHandle xSemaphore = NULL;
// A task that creates a semaphore.
void vATask( void * pvParameters )
{
// Create the semaphore to guard a shared resource.
vSemaphoreCreateBinary( xSemaphore );
}
// A task that uses the semaphore.
void vAnotherTask( void * pvParameters )
{
// ... Do other things.
if( xSemaphore != NULL )
{
// See if we can obtain the semaphore. If the semaphore is not available
// wait 10 ticks to see if it becomes free.
if( xSemaphoreTake( xSemaphore, ( portTickType ) 10 ) == pdTRUE )
{
// We were able to obtain the semaphore and can now access the
// shared resource.
// ...
// We have finished accessing the shared resource. Release the
// semaphore.
xSemaphoreGive( xSemaphore );
}
else
{
// We could not obtain the semaphore and can therefore not access
// the shared resource safely.
}
}
}
</pre>
* \defgroup xSemaphoreTake xSemaphoreTake
* \ingroup Semaphores
*/
#define xSemaphoreTake( xSemaphore, xBlockTime ) xQueueGenericReceive( ( xQueueHandle ) ( xSemaphore ), NULL, ( xBlockTime ), pdFALSE )
/**
* semphr. h
* xSemaphoreTakeRecursive(
* xSemaphoreHandle xMutex,
* portTickType xBlockTime
* )
*
* <i>Macro</i> to recursively obtain, or 'take', a mutex type semaphore.
* The mutex must have previously been created using a call to
* xSemaphoreCreateRecursiveMutex();
*
* configUSE_RECURSIVE_MUTEXES must be set to 1 in FreeRTOSConfig.h for this
* macro to be available.
*
* This macro must not be used on mutexes created using xSemaphoreCreateMutex().
*
* A mutex used recursively can be 'taken' repeatedly by the owner. The mutex
* doesn't become available again until the owner has called
* xSemaphoreGiveRecursive() for each successful 'take' request. For example,
* if a task successfully 'takes' the same mutex 5 times then the mutex will
* not be available to any other task until it has also 'given' the mutex back
* exactly five times.
*
* @param xMutex A handle to the mutex being obtained. This is the
* handle returned by xSemaphoreCreateRecursiveMutex();
*
* @param xBlockTime The time in ticks to wait for the semaphore to become
* available. The macro portTICK_RATE_MS can be used to convert this to a
* real time. A block time of zero can be used to poll the semaphore. If
* the task already owns the semaphore then xSemaphoreTakeRecursive() will
* return immediately no matter what the value of xBlockTime.
*
* @return pdTRUE if the semaphore was obtained. pdFALSE if xBlockTime
* expired without the semaphore becoming available.
*
* Example usage:
<pre>
xSemaphoreHandle xMutex = NULL;
// A task that creates a mutex.
void vATask( void * pvParameters )
{
// Create the mutex to guard a shared resource.
xMutex = xSemaphoreCreateRecursiveMutex();
}
// A task that uses the mutex.
void vAnotherTask( void * pvParameters )
{
// ... Do other things.
if( xMutex != NULL )
{
// See if we can obtain the mutex. If the mutex is not available
// wait 10 ticks to see if it becomes free.
if( xSemaphoreTakeRecursive( xSemaphore, ( portTickType ) 10 ) == pdTRUE )
{
// We were able to obtain the mutex and can now access the
// shared resource.
// ...
// For some reason due to the nature of the code further calls to
// xSemaphoreTakeRecursive() are made on the same mutex. In real
// code these would not be just sequential calls as this would make
// no sense. Instead the calls are likely to be buried inside
// a more complex call structure.
xSemaphoreTakeRecursive( xMutex, ( portTickType ) 10 );
xSemaphoreTakeRecursive( xMutex, ( portTickType ) 10 );
// The mutex has now been 'taken' three times, so will not be
// available to another task until it has also been given back
// three times. Again it is unlikely that real code would have
// these calls sequentially, but instead buried in a more complex
// call structure. This is just for illustrative purposes.
xSemaphoreGiveRecursive( xMutex );
xSemaphoreGiveRecursive( xMutex );
xSemaphoreGiveRecursive( xMutex );
// Now the mutex can be taken by other tasks.
}
else
{
// We could not obtain the mutex and can therefore not access
// the shared resource safely.
}
}
}
</pre>
* \defgroup xSemaphoreTakeRecursive xSemaphoreTakeRecursive
* \ingroup Semaphores
*/
#define xSemaphoreTakeRecursive( xMutex, xBlockTime ) xQueueTakeMutexRecursive( ( xMutex ), ( xBlockTime ) )
/*
* xSemaphoreAltTake() is an alternative version of xSemaphoreTake().
*
* The source code that implements the alternative (Alt) API is much
* simpler because it executes everything from within a critical section.
* This is the approach taken by many other RTOSes, but FreeRTOS.org has the
* preferred fully featured API too. The fully featured API has more
* complex code that takes longer to execute, but makes much less use of
* critical sections. Therefore the alternative API sacrifices interrupt
* responsiveness to gain execution speed, whereas the fully featured API
* sacrifices execution speed to ensure better interrupt responsiveness.
*/
#define xSemaphoreAltTake( xSemaphore, xBlockTime ) xQueueAltGenericReceive( ( xQueueHandle ) ( xSemaphore ), NULL, ( xBlockTime ), pdFALSE )
/**
* semphr. h
* <pre>xSemaphoreGive( xSemaphoreHandle xSemaphore )</pre>
*
* <i>Macro</i> to release a semaphore. The semaphore must have previously been
* created with a call to vSemaphoreCreateBinary(), xSemaphoreCreateMutex() or
* xSemaphoreCreateCounting(). and obtained using sSemaphoreTake().
*
* This macro must not be used from an ISR. See xSemaphoreGiveFromISR () for
* an alternative which can be used from an ISR.
*
* This macro must also not be used on semaphores created using
* xSemaphoreCreateRecursiveMutex().
*
* @param xSemaphore A handle to the semaphore being released. This is the
* handle returned when the semaphore was created.
*
* @return pdTRUE if the semaphore was released. pdFALSE if an error occurred.
* Semaphores are implemented using queues. An error can occur if there is
* no space on the queue to post a message - indicating that the
* semaphore was not first obtained correctly.
*
* Example usage:
<pre>
xSemaphoreHandle xSemaphore = NULL;
void vATask( void * pvParameters )
{
// Create the semaphore to guard a shared resource.
vSemaphoreCreateBinary( xSemaphore );
if( xSemaphore != NULL )
{
if( xSemaphoreGive( xSemaphore ) != pdTRUE )
{
// We would expect this call to fail because we cannot give
// a semaphore without first "taking" it!
}
// Obtain the semaphore - don't block if the semaphore is not
// immediately available.
if( xSemaphoreTake( xSemaphore, ( portTickType ) 0 ) )
{
// We now have the semaphore and can access the shared resource.
// ...
// We have finished accessing the shared resource so can free the
// semaphore.
if( xSemaphoreGive( xSemaphore ) != pdTRUE )
{
// We would not expect this call to fail because we must have
// obtained the semaphore to get here.
}
}
}
}
</pre>
* \defgroup xSemaphoreGive xSemaphoreGive
* \ingroup Semaphores
*/
#define xSemaphoreGive( xSemaphore ) xQueueGenericSend( ( xQueueHandle ) ( xSemaphore ), NULL, semGIVE_BLOCK_TIME, queueSEND_TO_BACK )
/**
* semphr. h
* <pre>xSemaphoreGiveRecursive( xSemaphoreHandle xMutex )</pre>
*
* <i>Macro</i> to recursively release, or 'give', a mutex type semaphore.
* The mutex must have previously been created using a call to
* xSemaphoreCreateRecursiveMutex();
*
* configUSE_RECURSIVE_MUTEXES must be set to 1 in FreeRTOSConfig.h for this
* macro to be available.
*
* This macro must not be used on mutexes created using xSemaphoreCreateMutex().
*
* A mutex used recursively can be 'taken' repeatedly by the owner. The mutex
* doesn't become available again until the owner has called
* xSemaphoreGiveRecursive() for each successful 'take' request. For example,
* if a task successfully 'takes' the same mutex 5 times then the mutex will
* not be available to any other task until it has also 'given' the mutex back
* exactly five times.
*
* @param xMutex A handle to the mutex being released, or 'given'. This is the
* handle returned by xSemaphoreCreateMutex();
*
* @return pdTRUE if the semaphore was given.
*
* Example usage:
<pre>
xSemaphoreHandle xMutex = NULL;
// A task that creates a mutex.
void vATask( void * pvParameters )
{
// Create the mutex to guard a shared resource.
xMutex = xSemaphoreCreateRecursiveMutex();
}
// A task that uses the mutex.
void vAnotherTask( void * pvParameters )
{
// ... Do other things.
if( xMutex != NULL )
{
// See if we can obtain the mutex. If the mutex is not available
// wait 10 ticks to see if it becomes free.
if( xSemaphoreTakeRecursive( xMutex, ( portTickType ) 10 ) == pdTRUE )
{
// We were able to obtain the mutex and can now access the
// shared resource.
// ...
// For some reason due to the nature of the code further calls to
// xSemaphoreTakeRecursive() are made on the same mutex. In real
// code these would not be just sequential calls as this would make
// no sense. Instead the calls are likely to be buried inside
// a more complex call structure.
xSemaphoreTakeRecursive( xMutex, ( portTickType ) 10 );
xSemaphoreTakeRecursive( xMutex, ( portTickType ) 10 );
// The mutex has now been 'taken' three times, so will not be
// available to another task until it has also been given back
// three times. Again it is unlikely that real code would have
// these calls sequentially, it would be more likely that the calls
// to xSemaphoreGiveRecursive() would be called as a call stack
// unwound. This is just for demonstrative purposes.
xSemaphoreGiveRecursive( xMutex );
xSemaphoreGiveRecursive( xMutex );
xSemaphoreGiveRecursive( xMutex );
// Now the mutex can be taken by other tasks.
}
else
{
// We could not obtain the mutex and can therefore not access
// the shared resource safely.
}
}
}
</pre>
* \defgroup xSemaphoreGiveRecursive xSemaphoreGiveRecursive
* \ingroup Semaphores
*/
#define xSemaphoreGiveRecursive( xMutex ) xQueueGiveMutexRecursive( ( xMutex ) )
/*
* xSemaphoreAltGive() is an alternative version of xSemaphoreGive().
*
* The source code that implements the alternative (Alt) API is much
* simpler because it executes everything from within a critical section.
* This is the approach taken by many other RTOSes, but FreeRTOS.org has the
* preferred fully featured API too. The fully featured API has more
* complex code that takes longer to execute, but makes much less use of
* critical sections. Therefore the alternative API sacrifices interrupt
* responsiveness to gain execution speed, whereas the fully featured API
* sacrifices execution speed to ensure better interrupt responsiveness.
*/
#define xSemaphoreAltGive( xSemaphore ) xQueueAltGenericSend( ( xQueueHandle ) ( xSemaphore ), NULL, semGIVE_BLOCK_TIME, queueSEND_TO_BACK )
/**
* semphr. h
* <pre>
xSemaphoreGiveFromISR(
xSemaphoreHandle xSemaphore,
signed portBASE_TYPE *pxHigherPriorityTaskWoken
)</pre>
*
* <i>Macro</i> to release a semaphore. The semaphore must have previously been
* created with a call to vSemaphoreCreateBinary() or xSemaphoreCreateCounting().
*
* Mutex type semaphores (those created using a call to xSemaphoreCreateMutex())
* must not be used with this macro.
*
* This macro can be used from an ISR.
*
* @param xSemaphore A handle to the semaphore being released. This is the
* handle returned when the semaphore was created.
*
* @param pxHigherPriorityTaskWoken xSemaphoreGiveFromISR() will set
* *pxHigherPriorityTaskWoken to pdTRUE if giving the semaphore caused a task
* to unblock, and the unblocked task has a priority higher than the currently
* running task. If xSemaphoreGiveFromISR() sets this value to pdTRUE then
* a context switch should be requested before the interrupt is exited.
*
* @return pdTRUE if the semaphore was successfully given, otherwise errQUEUE_FULL.
*
* Example usage:
<pre>
\#define LONG_TIME 0xffff
\#define TICKS_TO_WAIT 10
xSemaphoreHandle xSemaphore = NULL;
// Repetitive task.
void vATask( void * pvParameters )
{
for( ;; )
{
// We want this task to run every 10 ticks of a timer. The semaphore
// was created before this task was started.
// Block waiting for the semaphore to become available.
if( xSemaphoreTake( xSemaphore, LONG_TIME ) == pdTRUE )
{
// It is time to execute.
// ...
// We have finished our task. Return to the top of the loop where
// we will block on the semaphore until it is time to execute
// again. Note when using the semaphore for synchronisation with an
// ISR in this manner there is no need to 'give' the semaphore back.
}
}
}
// Timer ISR
void vTimerISR( void * pvParameters )
{
static unsigned char ucLocalTickCount = 0;
static signed portBASE_TYPE xHigherPriorityTaskWoken;
// A timer tick has occurred.
// ... Do other time functions.
// Is it time for vATask () to run?
xHigherPriorityTaskWoken = pdFALSE;
ucLocalTickCount++;
if( ucLocalTickCount >= TICKS_TO_WAIT )
{
// Unblock the task by releasing the semaphore.
xSemaphoreGiveFromISR( xSemaphore, &xHigherPriorityTaskWoken );
// Reset the count so we release the semaphore again in 10 ticks time.
ucLocalTickCount = 0;
}
if( xHigherPriorityTaskWoken != pdFALSE )
{
// We can force a context switch here. Context switching from an
// ISR uses port specific syntax. Check the demo task for your port
// to find the syntax required.
}
}
</pre>
* \defgroup xSemaphoreGiveFromISR xSemaphoreGiveFromISR
* \ingroup Semaphores
*/
#define xSemaphoreGiveFromISR( xSemaphore, pxHigherPriorityTaskWoken ) xQueueGenericSendFromISR( ( xQueueHandle ) ( xSemaphore ), NULL, ( pxHigherPriorityTaskWoken ), queueSEND_TO_BACK )
/**
* semphr. h
* <pre>
xSemaphoreTakeFromISR(
xSemaphoreHandle xSemaphore,
signed portBASE_TYPE *pxHigherPriorityTaskWoken
)</pre>
*
* <i>Macro</i> to take a semaphore from an ISR. The semaphore must have
* previously been created with a call to vSemaphoreCreateBinary() or
* xSemaphoreCreateCounting().
*
* Mutex type semaphores (those created using a call to xSemaphoreCreateMutex())
* must not be used with this macro.
*
* This macro can be used from an ISR, however taking a semaphore from an ISR
* is not a common operation. It is likely to only be useful when taking a
* counting semaphore when an interrupt is obtaining an object from a resource
* pool (when the semaphore count indicates the number of resources available).
*
* @param xSemaphore A handle to the semaphore being taken. This is the
* handle returned when the semaphore was created.
*
* @param pxHigherPriorityTaskWoken xSemaphoreTakeFromISR() will set
* *pxHigherPriorityTaskWoken to pdTRUE if taking the semaphore caused a task
* to unblock, and the unblocked task has a priority higher than the currently
* running task. If xSemaphoreTakeFromISR() sets this value to pdTRUE then
* a context switch should be requested before the interrupt is exited.
*
* @return pdTRUE if the semaphore was successfully taken, otherwise
* pdFALSE
*/
#define xSemaphoreTakeFromISR( xSemaphore, pxHigherPriorityTaskWoken ) xQueueReceiveFromISR( ( xQueueHandle ) ( xSemaphore ), NULL, ( pxHigherPriorityTaskWoken ) )
/**
* semphr. h
* <pre>xSemaphoreHandle xSemaphoreCreateMutex( void )</pre>
*
* <i>Macro</i> that implements a mutex semaphore by using the existing queue
* mechanism.
*
* Mutexes created using this macro can be accessed using the xSemaphoreTake()
* and xSemaphoreGive() macros. The xSemaphoreTakeRecursive() and
* xSemaphoreGiveRecursive() macros should not be used.
*
* This type of semaphore uses a priority inheritance mechanism so a task
* 'taking' a semaphore MUST ALWAYS 'give' the semaphore back once the
* semaphore it is no longer required.
*
* Mutex type semaphores cannot be used from within interrupt service routines.
*
* See vSemaphoreCreateBinary() for an alternative implementation that can be
* used for pure synchronisation (where one task or interrupt always 'gives' the
* semaphore and another always 'takes' the semaphore) and from within interrupt
* service routines.
*
* @return xSemaphore Handle to the created mutex semaphore. Should be of type
* xSemaphoreHandle.
*
* Example usage:
<pre>
xSemaphoreHandle xSemaphore;
void vATask( void * pvParameters )
{
// Semaphore cannot be used before a call to xSemaphoreCreateMutex().
// This is a macro so pass the variable in directly.
xSemaphore = xSemaphoreCreateMutex();
if( xSemaphore != NULL )
{
// The semaphore was created successfully.
// The semaphore can now be used.
}
}
</pre>
* \defgroup vSemaphoreCreateMutex vSemaphoreCreateMutex
* \ingroup Semaphores
*/
#define xSemaphoreCreateMutex() xQueueCreateMutex( queueQUEUE_TYPE_MUTEX )
/**
* semphr. h
* <pre>xSemaphoreHandle xSemaphoreCreateRecursiveMutex( void )</pre>
*
* <i>Macro</i> that implements a recursive mutex by using the existing queue
* mechanism.
*
* Mutexes created using this macro can be accessed using the
* xSemaphoreTakeRecursive() and xSemaphoreGiveRecursive() macros. The
* xSemaphoreTake() and xSemaphoreGive() macros should not be used.
*
* A mutex used recursively can be 'taken' repeatedly by the owner. The mutex
* doesn't become available again until the owner has called
* xSemaphoreGiveRecursive() for each successful 'take' request. For example,
* if a task successfully 'takes' the same mutex 5 times then the mutex will
* not be available to any other task until it has also 'given' the mutex back
* exactly five times.
*
* This type of semaphore uses a priority inheritance mechanism so a task
* 'taking' a semaphore MUST ALWAYS 'give' the semaphore back once the
* semaphore it is no longer required.
*
* Mutex type semaphores cannot be used from within interrupt service routines.
*
* See vSemaphoreCreateBinary() for an alternative implementation that can be
* used for pure synchronisation (where one task or interrupt always 'gives' the
* semaphore and another always 'takes' the semaphore) and from within interrupt
* service routines.
*
* @return xSemaphore Handle to the created mutex semaphore. Should be of type
* xSemaphoreHandle.
*
* Example usage:
<pre>
xSemaphoreHandle xSemaphore;
void vATask( void * pvParameters )
{
// Semaphore cannot be used before a call to xSemaphoreCreateMutex().
// This is a macro so pass the variable in directly.
xSemaphore = xSemaphoreCreateRecursiveMutex();
if( xSemaphore != NULL )
{
// The semaphore was created successfully.
// The semaphore can now be used.
}
}
</pre>
* \defgroup vSemaphoreCreateMutex vSemaphoreCreateMutex
* \ingroup Semaphores
*/
#define xSemaphoreCreateRecursiveMutex() xQueueCreateMutex( queueQUEUE_TYPE_RECURSIVE_MUTEX )
/**
* semphr. h
* <pre>xSemaphoreHandle xSemaphoreCreateCounting( unsigned portBASE_TYPE uxMaxCount, unsigned portBASE_TYPE uxInitialCount )</pre>
*
* <i>Macro</i> that creates a counting semaphore by using the existing
* queue mechanism.
*
* Counting semaphores are typically used for two things:
*
* 1) Counting events.
*
* In this usage scenario an event handler will 'give' a semaphore each time
* an event occurs (incrementing the semaphore count value), and a handler
* task will 'take' a semaphore each time it processes an event
* (decrementing the semaphore count value). The count value is therefore
* the difference between the number of events that have occurred and the
* number that have been processed. In this case it is desirable for the
* initial count value to be zero.
*
* 2) Resource management.
*
* In this usage scenario the count value indicates the number of resources
* available. To obtain control of a resource a task must first obtain a
* semaphore - decrementing the semaphore count value. When the count value
* reaches zero there are no free resources. When a task finishes with the
* resource it 'gives' the semaphore back - incrementing the semaphore count
* value. In this case it is desirable for the initial count value to be
* equal to the maximum count value, indicating that all resources are free.
*
* @param uxMaxCount The maximum count value that can be reached. When the
* semaphore reaches this value it can no longer be 'given'.
*
* @param uxInitialCount The count value assigned to the semaphore when it is
* created.
*
* @return Handle to the created semaphore. Null if the semaphore could not be
* created.
*
* Example usage:
<pre>
xSemaphoreHandle xSemaphore;
void vATask( void * pvParameters )
{
xSemaphoreHandle xSemaphore = NULL;
// Semaphore cannot be used before a call to xSemaphoreCreateCounting().
// The max value to which the semaphore can count should be 10, and the
// initial value assigned to the count should be 0.
xSemaphore = xSemaphoreCreateCounting( 10, 0 );
if( xSemaphore != NULL )
{
// The semaphore was created successfully.
// The semaphore can now be used.
}
}
</pre>
* \defgroup xSemaphoreCreateCounting xSemaphoreCreateCounting
* \ingroup Semaphores
*/
#define xSemaphoreCreateCounting( uxMaxCount, uxInitialCount ) xQueueCreateCountingSemaphore( ( uxMaxCount ), ( uxInitialCount ) )
/**
* semphr. h
* <pre>void vSemaphoreDelete( xSemaphoreHandle xSemaphore );</pre>
*
* Delete a semaphore. This function must be used with care. For example,
* do not delete a mutex type semaphore if the mutex is held by a task.
*
* @param xSemaphore A handle to the semaphore to be deleted.
*
* \defgroup vSemaphoreDelete vSemaphoreDelete
* \ingroup Semaphores
*/
#define vSemaphoreDelete( xSemaphore ) vQueueDelete( ( xQueueHandle ) ( xSemaphore ) )
/**
* semphr.h
* <pre>xTaskHandle xSemaphoreGetMutexHolder( xSemaphoreHandle xMutex );</pre>
*
* If xMutex is indeed a mutex type semaphore, return the current mutex holder.
* If xMutex is not a mutex type semaphore, or the mutex is available (not held
* by a task), return NULL.
*
* Note: This Is is a good way of determining if the calling task is the mutex
* holder, but not a good way of determining the identity of the mutex holder as
* the holder may change between the function exiting and the returned value
* being tested.
*/
#define xSemaphoreGetMutexHolder( xSemaphore ) xQueueGetMutexHolder( ( xSemaphore ) )
#endif /* SEMAPHORE_H */

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FreeRTOS/include/task.h Normal file
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960
FreeRTOS/include/timers.h Normal file
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@ -0,0 +1,960 @@
/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
#ifndef TIMERS_H
#define TIMERS_H
#ifndef INC_FREERTOS_H
#error "include FreeRTOS.h must appear in source files before include timers.h"
#endif
/*lint -e537 This headers are only multiply included if the application code
happens to also be including task.h. */
#include "task.h"
/*lint +e956 */
#ifdef __cplusplus
extern "C" {
#endif
/* IDs for commands that can be sent/received on the timer queue. These are to
be used solely through the macros that make up the public software timer API,
as defined below. */
#define tmrCOMMAND_START ( ( portBASE_TYPE ) 0 )
#define tmrCOMMAND_STOP ( ( portBASE_TYPE ) 1 )
#define tmrCOMMAND_CHANGE_PERIOD ( ( portBASE_TYPE ) 2 )
#define tmrCOMMAND_DELETE ( ( portBASE_TYPE ) 3 )
/*-----------------------------------------------------------
* MACROS AND DEFINITIONS
*----------------------------------------------------------*/
/**
* Type by which software timers are referenced. For example, a call to
* xTimerCreate() returns an xTimerHandle variable that can then be used to
* reference the subject timer in calls to other software timer API functions
* (for example, xTimerStart(), xTimerReset(), etc.).
*/
typedef void * xTimerHandle;
/* Define the prototype to which timer callback functions must conform. */
typedef void (*tmrTIMER_CALLBACK)( xTimerHandle xTimer );
/**
* xTimerHandle xTimerCreate( const signed char *pcTimerName,
* portTickType xTimerPeriodInTicks,
* unsigned portBASE_TYPE uxAutoReload,
* void * pvTimerID,
* tmrTIMER_CALLBACK pxCallbackFunction );
*
* Creates a new software timer instance. This allocates the storage required
* by the new timer, initialises the new timers internal state, and returns a
* handle by which the new timer can be referenced.
*
* Timers are created in the dormant state. The xTimerStart(), xTimerReset(),
* xTimerStartFromISR(), xTimerResetFromISR(), xTimerChangePeriod() and
* xTimerChangePeriodFromISR() API functions can all be used to transition a timer into the
* active state.
*
* @param pcTimerName A text name that is assigned to the timer. This is done
* purely to assist debugging. The kernel itself only ever references a timer by
* its handle, and never by its name.
*
* @param xTimerPeriodInTicks The timer period. The time is defined in tick periods so
* the constant portTICK_RATE_MS can be used to convert a time that has been
* specified in milliseconds. For example, if the timer must expire after 100
* ticks, then xTimerPeriodInTicks should be set to 100. Alternatively, if the timer
* must expire after 500ms, then xPeriod can be set to ( 500 / portTICK_RATE_MS )
* provided configTICK_RATE_HZ is less than or equal to 1000.
*
* @param uxAutoReload If uxAutoReload is set to pdTRUE then the timer will
* expire repeatedly with a frequency set by the xTimerPeriodInTicks parameter. If
* uxAutoReload is set to pdFALSE then the timer will be a one-shot timer and
* enter the dormant state after it expires.
*
* @param pvTimerID An identifier that is assigned to the timer being created.
* Typically this would be used in the timer callback function to identify which
* timer expired when the same callback function is assigned to more than one
* timer.
*
* @param pxCallbackFunction The function to call when the timer expires.
* Callback functions must have the prototype defined by tmrTIMER_CALLBACK,
* which is "void vCallbackFunction( xTimerHandle xTimer );".
*
* @return If the timer is successfully create then a handle to the newly
* created timer is returned. If the timer cannot be created (because either
* there is insufficient FreeRTOS heap remaining to allocate the timer
* structures, or the timer period was set to 0) then 0 is returned.
*
* Example usage:
* @verbatim
* #define NUM_TIMERS 5
*
* // An array to hold handles to the created timers.
* xTimerHandle xTimers[ NUM_TIMERS ];
*
* // An array to hold a count of the number of times each timer expires.
* long lExpireCounters[ NUM_TIMERS ] = { 0 };
*
* // Define a callback function that will be used by multiple timer instances.
* // The callback function does nothing but count the number of times the
* // associated timer expires, and stop the timer once the timer has expired
* // 10 times.
* void vTimerCallback( xTimerHandle pxTimer )
* {
* long lArrayIndex;
* const long xMaxExpiryCountBeforeStopping = 10;
*
* // Optionally do something if the pxTimer parameter is NULL.
* configASSERT( pxTimer );
*
* // Which timer expired?
* lArrayIndex = ( long ) pvTimerGetTimerID( pxTimer );
*
* // Increment the number of times that pxTimer has expired.
* lExpireCounters[ lArrayIndex ] += 1;
*
* // If the timer has expired 10 times then stop it from running.
* if( lExpireCounters[ lArrayIndex ] == xMaxExpiryCountBeforeStopping )
* {
* // Do not use a block time if calling a timer API function from a
* // timer callback function, as doing so could cause a deadlock!
* xTimerStop( pxTimer, 0 );
* }
* }
*
* void main( void )
* {
* long x;
*
* // Create then start some timers. Starting the timers before the scheduler
* // has been started means the timers will start running immediately that
* // the scheduler starts.
* for( x = 0; x < NUM_TIMERS; x++ )
* {
* xTimers[ x ] = xTimerCreate( "Timer", // Just a text name, not used by the kernel.
* ( 100 * x ), // The timer period in ticks.
* pdTRUE, // The timers will auto-reload themselves when they expire.
* ( void * ) x, // Assign each timer a unique id equal to its array index.
* vTimerCallback // Each timer calls the same callback when it expires.
* );
*
* if( xTimers[ x ] == NULL )
* {
* // The timer was not created.
* }
* else
* {
* // Start the timer. No block time is specified, and even if one was
* // it would be ignored because the scheduler has not yet been
* // started.
* if( xTimerStart( xTimers[ x ], 0 ) != pdPASS )
* {
* // The timer could not be set into the Active state.
* }
* }
* }
*
* // ...
* // Create tasks here.
* // ...
*
* // Starting the scheduler will start the timers running as they have already
* // been set into the active state.
* xTaskStartScheduler();
*
* // Should not reach here.
* for( ;; );
* }
* @endverbatim
*/
xTimerHandle xTimerCreate( const signed char * const pcTimerName, portTickType xTimerPeriodInTicks, unsigned portBASE_TYPE uxAutoReload, void * pvTimerID, tmrTIMER_CALLBACK pxCallbackFunction ) PRIVILEGED_FUNCTION;
/**
* void *pvTimerGetTimerID( xTimerHandle xTimer );
*
* Returns the ID assigned to the timer.
*
* IDs are assigned to timers using the pvTimerID parameter of the call to
* xTimerCreated() that was used to create the timer.
*
* If the same callback function is assigned to multiple timers then the timer
* ID can be used within the callback function to identify which timer actually
* expired.
*
* @param xTimer The timer being queried.
*
* @return The ID assigned to the timer being queried.
*
* Example usage:
*
* See the xTimerCreate() API function example usage scenario.
*/
void *pvTimerGetTimerID( xTimerHandle xTimer ) PRIVILEGED_FUNCTION;
/**
* portBASE_TYPE xTimerIsTimerActive( xTimerHandle xTimer );
*
* Queries a timer to see if it is active or dormant.
*
* A timer will be dormant if:
* 1) It has been created but not started, or
* 2) It is an expired on-shot timer that has not been restarted.
*
* Timers are created in the dormant state. The xTimerStart(), xTimerReset(),
* xTimerStartFromISR(), xTimerResetFromISR(), xTimerChangePeriod() and
* xTimerChangePeriodFromISR() API functions can all be used to transition a timer into the
* active state.
*
* @param xTimer The timer being queried.
*
* @return pdFALSE will be returned if the timer is dormant. A value other than
* pdFALSE will be returned if the timer is active.
*
* Example usage:
* @verbatim
* // This function assumes xTimer has already been created.
* void vAFunction( xTimerHandle xTimer )
* {
* if( xTimerIsTimerActive( xTimer ) != pdFALSE ) // or more simply and equivalently "if( xTimerIsTimerActive( xTimer ) )"
* {
* // xTimer is active, do something.
* }
* else
* {
* // xTimer is not active, do something else.
* }
* }
* @endverbatim
*/
portBASE_TYPE xTimerIsTimerActive( xTimerHandle xTimer ) PRIVILEGED_FUNCTION;
/**
* xTimerGetTimerDaemonTaskHandle() is only available if
* INCLUDE_xTimerGetTimerDaemonTaskHandle is set to 1 in FreeRTOSConfig.h.
*
* Simply returns the handle of the timer service/daemon task. It it not valid
* to call xTimerGetTimerDaemonTaskHandle() before the scheduler has been started.
*/
xTaskHandle xTimerGetTimerDaemonTaskHandle( void );
/**
* portBASE_TYPE xTimerStart( xTimerHandle xTimer, portTickType xBlockTime );
*
* Timer functionality is provided by a timer service/daemon task. Many of the
* public FreeRTOS timer API functions send commands to the timer service task
* though a queue called the timer command queue. The timer command queue is
* private to the kernel itself and is not directly accessible to application
* code. The length of the timer command queue is set by the
* configTIMER_QUEUE_LENGTH configuration constant.
*
* xTimerStart() starts a timer that was previously created using the
* xTimerCreate() API function. If the timer had already been started and was
* already in the active state, then xTimerStart() has equivalent functionality
* to the xTimerReset() API function.
*
* Starting a timer ensures the timer is in the active state. If the timer
* is not stopped, deleted, or reset in the mean time, the callback function
* associated with the timer will get called 'n' ticks after xTimerStart() was
* called, where 'n' is the timers defined period.
*
* It is valid to call xTimerStart() before the scheduler has been started, but
* when this is done the timer will not actually start until the scheduler is
* started, and the timers expiry time will be relative to when the scheduler is
* started, not relative to when xTimerStart() was called.
*
* The configUSE_TIMERS configuration constant must be set to 1 for xTimerStart()
* to be available.
*
* @param xTimer The handle of the timer being started/restarted.
*
* @param xBlockTime Specifies the time, in ticks, that the calling task should
* be held in the Blocked state to wait for the start command to be successfully
* sent to the timer command queue, should the queue already be full when
* xTimerStart() was called. xBlockTime is ignored if xTimerStart() is called
* before the scheduler is started.
*
* @return pdFAIL will be returned if the start command could not be sent to
* the timer command queue even after xBlockTime ticks had passed. pdPASS will
* be returned if the command was successfully sent to the timer command queue.
* When the command is actually processed will depend on the priority of the
* timer service/daemon task relative to other tasks in the system, although the
* timers expiry time is relative to when xTimerStart() is actually called. The
* timer service/daemon task priority is set by the configTIMER_TASK_PRIORITY
* configuration constant.
*
* Example usage:
*
* See the xTimerCreate() API function example usage scenario.
*
*/
#define xTimerStart( xTimer, xBlockTime ) xTimerGenericCommand( ( xTimer ), tmrCOMMAND_START, ( xTaskGetTickCount() ), NULL, ( xBlockTime ) )
/**
* portBASE_TYPE xTimerStop( xTimerHandle xTimer, portTickType xBlockTime );
*
* Timer functionality is provided by a timer service/daemon task. Many of the
* public FreeRTOS timer API functions send commands to the timer service task
* though a queue called the timer command queue. The timer command queue is
* private to the kernel itself and is not directly accessible to application
* code. The length of the timer command queue is set by the
* configTIMER_QUEUE_LENGTH configuration constant.
*
* xTimerStop() stops a timer that was previously started using either of the
* The xTimerStart(), xTimerReset(), xTimerStartFromISR(), xTimerResetFromISR(),
* xTimerChangePeriod() or xTimerChangePeriodFromISR() API functions.
*
* Stopping a timer ensures the timer is not in the active state.
*
* The configUSE_TIMERS configuration constant must be set to 1 for xTimerStop()
* to be available.
*
* @param xTimer The handle of the timer being stopped.
*
* @param xBlockTime Specifies the time, in ticks, that the calling task should
* be held in the Blocked state to wait for the stop command to be successfully
* sent to the timer command queue, should the queue already be full when
* xTimerStop() was called. xBlockTime is ignored if xTimerStop() is called
* before the scheduler is started.
*
* @return pdFAIL will be returned if the stop command could not be sent to
* the timer command queue even after xBlockTime ticks had passed. pdPASS will
* be returned if the command was successfully sent to the timer command queue.
* When the command is actually processed will depend on the priority of the
* timer service/daemon task relative to other tasks in the system. The timer
* service/daemon task priority is set by the configTIMER_TASK_PRIORITY
* configuration constant.
*
* Example usage:
*
* See the xTimerCreate() API function example usage scenario.
*
*/
#define xTimerStop( xTimer, xBlockTime ) xTimerGenericCommand( ( xTimer ), tmrCOMMAND_STOP, 0U, NULL, ( xBlockTime ) )
/**
* portBASE_TYPE xTimerChangePeriod( xTimerHandle xTimer,
* portTickType xNewPeriod,
* portTickType xBlockTime );
*
* Timer functionality is provided by a timer service/daemon task. Many of the
* public FreeRTOS timer API functions send commands to the timer service task
* though a queue called the timer command queue. The timer command queue is
* private to the kernel itself and is not directly accessible to application
* code. The length of the timer command queue is set by the
* configTIMER_QUEUE_LENGTH configuration constant.
*
* xTimerChangePeriod() changes the period of a timer that was previously
* created using the xTimerCreate() API function.
*
* xTimerChangePeriod() can be called to change the period of an active or
* dormant state timer.
*
* The configUSE_TIMERS configuration constant must be set to 1 for
* xTimerChangePeriod() to be available.
*
* @param xTimer The handle of the timer that is having its period changed.
*
* @param xNewPeriod The new period for xTimer. Timer periods are specified in
* tick periods, so the constant portTICK_RATE_MS can be used to convert a time
* that has been specified in milliseconds. For example, if the timer must
* expire after 100 ticks, then xNewPeriod should be set to 100. Alternatively,
* if the timer must expire after 500ms, then xNewPeriod can be set to
* ( 500 / portTICK_RATE_MS ) provided configTICK_RATE_HZ is less than
* or equal to 1000.
*
* @param xBlockTime Specifies the time, in ticks, that the calling task should
* be held in the Blocked state to wait for the change period command to be
* successfully sent to the timer command queue, should the queue already be
* full when xTimerChangePeriod() was called. xBlockTime is ignored if
* xTimerChangePeriod() is called before the scheduler is started.
*
* @return pdFAIL will be returned if the change period command could not be
* sent to the timer command queue even after xBlockTime ticks had passed.
* pdPASS will be returned if the command was successfully sent to the timer
* command queue. When the command is actually processed will depend on the
* priority of the timer service/daemon task relative to other tasks in the
* system. The timer service/daemon task priority is set by the
* configTIMER_TASK_PRIORITY configuration constant.
*
* Example usage:
* @verbatim
* // This function assumes xTimer has already been created. If the timer
* // referenced by xTimer is already active when it is called, then the timer
* // is deleted. If the timer referenced by xTimer is not active when it is
* // called, then the period of the timer is set to 500ms and the timer is
* // started.
* void vAFunction( xTimerHandle xTimer )
* {
* if( xTimerIsTimerActive( xTimer ) != pdFALSE ) // or more simply and equivalently "if( xTimerIsTimerActive( xTimer ) )"
* {
* // xTimer is already active - delete it.
* xTimerDelete( xTimer );
* }
* else
* {
* // xTimer is not active, change its period to 500ms. This will also
* // cause the timer to start. Block for a maximum of 100 ticks if the
* // change period command cannot immediately be sent to the timer
* // command queue.
* if( xTimerChangePeriod( xTimer, 500 / portTICK_RATE_MS, 100 ) == pdPASS )
* {
* // The command was successfully sent.
* }
* else
* {
* // The command could not be sent, even after waiting for 100 ticks
* // to pass. Take appropriate action here.
* }
* }
* }
* @endverbatim
*/
#define xTimerChangePeriod( xTimer, xNewPeriod, xBlockTime ) xTimerGenericCommand( ( xTimer ), tmrCOMMAND_CHANGE_PERIOD, ( xNewPeriod ), NULL, ( xBlockTime ) )
/**
* portBASE_TYPE xTimerDelete( xTimerHandle xTimer, portTickType xBlockTime );
*
* Timer functionality is provided by a timer service/daemon task. Many of the
* public FreeRTOS timer API functions send commands to the timer service task
* though a queue called the timer command queue. The timer command queue is
* private to the kernel itself and is not directly accessible to application
* code. The length of the timer command queue is set by the
* configTIMER_QUEUE_LENGTH configuration constant.
*
* xTimerDelete() deletes a timer that was previously created using the
* xTimerCreate() API function.
*
* The configUSE_TIMERS configuration constant must be set to 1 for
* xTimerDelete() to be available.
*
* @param xTimer The handle of the timer being deleted.
*
* @param xBlockTime Specifies the time, in ticks, that the calling task should
* be held in the Blocked state to wait for the delete command to be
* successfully sent to the timer command queue, should the queue already be
* full when xTimerDelete() was called. xBlockTime is ignored if xTimerDelete()
* is called before the scheduler is started.
*
* @return pdFAIL will be returned if the delete command could not be sent to
* the timer command queue even after xBlockTime ticks had passed. pdPASS will
* be returned if the command was successfully sent to the timer command queue.
* When the command is actually processed will depend on the priority of the
* timer service/daemon task relative to other tasks in the system. The timer
* service/daemon task priority is set by the configTIMER_TASK_PRIORITY
* configuration constant.
*
* Example usage:
*
* See the xTimerChangePeriod() API function example usage scenario.
*/
#define xTimerDelete( xTimer, xBlockTime ) xTimerGenericCommand( ( xTimer ), tmrCOMMAND_DELETE, 0U, NULL, ( xBlockTime ) )
/**
* portBASE_TYPE xTimerReset( xTimerHandle xTimer, portTickType xBlockTime );
*
* Timer functionality is provided by a timer service/daemon task. Many of the
* public FreeRTOS timer API functions send commands to the timer service task
* though a queue called the timer command queue. The timer command queue is
* private to the kernel itself and is not directly accessible to application
* code. The length of the timer command queue is set by the
* configTIMER_QUEUE_LENGTH configuration constant.
*
* xTimerReset() re-starts a timer that was previously created using the
* xTimerCreate() API function. If the timer had already been started and was
* already in the active state, then xTimerReset() will cause the timer to
* re-evaluate its expiry time so that it is relative to when xTimerReset() was
* called. If the timer was in the dormant state then xTimerReset() has
* equivalent functionality to the xTimerStart() API function.
*
* Resetting a timer ensures the timer is in the active state. If the timer
* is not stopped, deleted, or reset in the mean time, the callback function
* associated with the timer will get called 'n' ticks after xTimerReset() was
* called, where 'n' is the timers defined period.
*
* It is valid to call xTimerReset() before the scheduler has been started, but
* when this is done the timer will not actually start until the scheduler is
* started, and the timers expiry time will be relative to when the scheduler is
* started, not relative to when xTimerReset() was called.
*
* The configUSE_TIMERS configuration constant must be set to 1 for xTimerReset()
* to be available.
*
* @param xTimer The handle of the timer being reset/started/restarted.
*
* @param xBlockTime Specifies the time, in ticks, that the calling task should
* be held in the Blocked state to wait for the reset command to be successfully
* sent to the timer command queue, should the queue already be full when
* xTimerReset() was called. xBlockTime is ignored if xTimerReset() is called
* before the scheduler is started.
*
* @return pdFAIL will be returned if the reset command could not be sent to
* the timer command queue even after xBlockTime ticks had passed. pdPASS will
* be returned if the command was successfully sent to the timer command queue.
* When the command is actually processed will depend on the priority of the
* timer service/daemon task relative to other tasks in the system, although the
* timers expiry time is relative to when xTimerStart() is actually called. The
* timer service/daemon task priority is set by the configTIMER_TASK_PRIORITY
* configuration constant.
*
* Example usage:
* @verbatim
* // When a key is pressed, an LCD back-light is switched on. If 5 seconds pass
* // without a key being pressed, then the LCD back-light is switched off. In
* // this case, the timer is a one-shot timer.
*
* xTimerHandle xBacklightTimer = NULL;
*
* // The callback function assigned to the one-shot timer. In this case the
* // parameter is not used.
* void vBacklightTimerCallback( xTimerHandle pxTimer )
* {
* // The timer expired, therefore 5 seconds must have passed since a key
* // was pressed. Switch off the LCD back-light.
* vSetBacklightState( BACKLIGHT_OFF );
* }
*
* // The key press event handler.
* void vKeyPressEventHandler( char cKey )
* {
* // Ensure the LCD back-light is on, then reset the timer that is
* // responsible for turning the back-light off after 5 seconds of
* // key inactivity. Wait 10 ticks for the command to be successfully sent
* // if it cannot be sent immediately.
* vSetBacklightState( BACKLIGHT_ON );
* if( xTimerReset( xBacklightTimer, 100 ) != pdPASS )
* {
* // The reset command was not executed successfully. Take appropriate
* // action here.
* }
*
* // Perform the rest of the key processing here.
* }
*
* void main( void )
* {
* long x;
*
* // Create then start the one-shot timer that is responsible for turning
* // the back-light off if no keys are pressed within a 5 second period.
* xBacklightTimer = xTimerCreate( "BacklightTimer", // Just a text name, not used by the kernel.
* ( 5000 / portTICK_RATE_MS), // The timer period in ticks.
* pdFALSE, // The timer is a one-shot timer.
* 0, // The id is not used by the callback so can take any value.
* vBacklightTimerCallback // The callback function that switches the LCD back-light off.
* );
*
* if( xBacklightTimer == NULL )
* {
* // The timer was not created.
* }
* else
* {
* // Start the timer. No block time is specified, and even if one was
* // it would be ignored because the scheduler has not yet been
* // started.
* if( xTimerStart( xBacklightTimer, 0 ) != pdPASS )
* {
* // The timer could not be set into the Active state.
* }
* }
*
* // ...
* // Create tasks here.
* // ...
*
* // Starting the scheduler will start the timer running as it has already
* // been set into the active state.
* xTaskStartScheduler();
*
* // Should not reach here.
* for( ;; );
* }
* @endverbatim
*/
#define xTimerReset( xTimer, xBlockTime ) xTimerGenericCommand( ( xTimer ), tmrCOMMAND_START, ( xTaskGetTickCount() ), NULL, ( xBlockTime ) )
/**
* portBASE_TYPE xTimerStartFromISR( xTimerHandle xTimer,
* portBASE_TYPE *pxHigherPriorityTaskWoken );
*
* A version of xTimerStart() that can be called from an interrupt service
* routine.
*
* @param xTimer The handle of the timer being started/restarted.
*
* @param pxHigherPriorityTaskWoken The timer service/daemon task spends most
* of its time in the Blocked state, waiting for messages to arrive on the timer
* command queue. Calling xTimerStartFromISR() writes a message to the timer
* command queue, so has the potential to transition the timer service/daemon
* task out of the Blocked state. If calling xTimerStartFromISR() causes the
* timer service/daemon task to leave the Blocked state, and the timer service/
* daemon task has a priority equal to or greater than the currently executing
* task (the task that was interrupted), then *pxHigherPriorityTaskWoken will
* get set to pdTRUE internally within the xTimerStartFromISR() function. If
* xTimerStartFromISR() sets this value to pdTRUE then a context switch should
* be performed before the interrupt exits.
*
* @return pdFAIL will be returned if the start command could not be sent to
* the timer command queue. pdPASS will be returned if the command was
* successfully sent to the timer command queue. When the command is actually
* processed will depend on the priority of the timer service/daemon task
* relative to other tasks in the system, although the timers expiry time is
* relative to when xTimerStartFromISR() is actually called. The timer service/daemon
* task priority is set by the configTIMER_TASK_PRIORITY configuration constant.
*
* Example usage:
* @verbatim
* // This scenario assumes xBacklightTimer has already been created. When a
* // key is pressed, an LCD back-light is switched on. If 5 seconds pass
* // without a key being pressed, then the LCD back-light is switched off. In
* // this case, the timer is a one-shot timer, and unlike the example given for
* // the xTimerReset() function, the key press event handler is an interrupt
* // service routine.
*
* // The callback function assigned to the one-shot timer. In this case the
* // parameter is not used.
* void vBacklightTimerCallback( xTimerHandle pxTimer )
* {
* // The timer expired, therefore 5 seconds must have passed since a key
* // was pressed. Switch off the LCD back-light.
* vSetBacklightState( BACKLIGHT_OFF );
* }
*
* // The key press interrupt service routine.
* void vKeyPressEventInterruptHandler( void )
* {
* portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
*
* // Ensure the LCD back-light is on, then restart the timer that is
* // responsible for turning the back-light off after 5 seconds of
* // key inactivity. This is an interrupt service routine so can only
* // call FreeRTOS API functions that end in "FromISR".
* vSetBacklightState( BACKLIGHT_ON );
*
* // xTimerStartFromISR() or xTimerResetFromISR() could be called here
* // as both cause the timer to re-calculate its expiry time.
* // xHigherPriorityTaskWoken was initialised to pdFALSE when it was
* // declared (in this function).
* if( xTimerStartFromISR( xBacklightTimer, &xHigherPriorityTaskWoken ) != pdPASS )
* {
* // The start command was not executed successfully. Take appropriate
* // action here.
* }
*
* // Perform the rest of the key processing here.
*
* // If xHigherPriorityTaskWoken equals pdTRUE, then a context switch
* // should be performed. The syntax required to perform a context switch
* // from inside an ISR varies from port to port, and from compiler to
* // compiler. Inspect the demos for the port you are using to find the
* // actual syntax required.
* if( xHigherPriorityTaskWoken != pdFALSE )
* {
* // Call the interrupt safe yield function here (actual function
* // depends on the FreeRTOS port being used.
* }
* }
* @endverbatim
*/
#define xTimerStartFromISR( xTimer, pxHigherPriorityTaskWoken ) xTimerGenericCommand( ( xTimer ), tmrCOMMAND_START, ( xTaskGetTickCountFromISR() ), ( pxHigherPriorityTaskWoken ), 0U )
/**
* portBASE_TYPE xTimerStopFromISR( xTimerHandle xTimer,
* portBASE_TYPE *pxHigherPriorityTaskWoken );
*
* A version of xTimerStop() that can be called from an interrupt service
* routine.
*
* @param xTimer The handle of the timer being stopped.
*
* @param pxHigherPriorityTaskWoken The timer service/daemon task spends most
* of its time in the Blocked state, waiting for messages to arrive on the timer
* command queue. Calling xTimerStopFromISR() writes a message to the timer
* command queue, so has the potential to transition the timer service/daemon
* task out of the Blocked state. If calling xTimerStopFromISR() causes the
* timer service/daemon task to leave the Blocked state, and the timer service/
* daemon task has a priority equal to or greater than the currently executing
* task (the task that was interrupted), then *pxHigherPriorityTaskWoken will
* get set to pdTRUE internally within the xTimerStopFromISR() function. If
* xTimerStopFromISR() sets this value to pdTRUE then a context switch should
* be performed before the interrupt exits.
*
* @return pdFAIL will be returned if the stop command could not be sent to
* the timer command queue. pdPASS will be returned if the command was
* successfully sent to the timer command queue. When the command is actually
* processed will depend on the priority of the timer service/daemon task
* relative to other tasks in the system. The timer service/daemon task
* priority is set by the configTIMER_TASK_PRIORITY configuration constant.
*
* Example usage:
* @verbatim
* // This scenario assumes xTimer has already been created and started. When
* // an interrupt occurs, the timer should be simply stopped.
*
* // The interrupt service routine that stops the timer.
* void vAnExampleInterruptServiceRoutine( void )
* {
* portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
*
* // The interrupt has occurred - simply stop the timer.
* // xHigherPriorityTaskWoken was set to pdFALSE where it was defined
* // (within this function). As this is an interrupt service routine, only
* // FreeRTOS API functions that end in "FromISR" can be used.
* if( xTimerStopFromISR( xTimer, &xHigherPriorityTaskWoken ) != pdPASS )
* {
* // The stop command was not executed successfully. Take appropriate
* // action here.
* }
*
* // If xHigherPriorityTaskWoken equals pdTRUE, then a context switch
* // should be performed. The syntax required to perform a context switch
* // from inside an ISR varies from port to port, and from compiler to
* // compiler. Inspect the demos for the port you are using to find the
* // actual syntax required.
* if( xHigherPriorityTaskWoken != pdFALSE )
* {
* // Call the interrupt safe yield function here (actual function
* // depends on the FreeRTOS port being used.
* }
* }
* @endverbatim
*/
#define xTimerStopFromISR( xTimer, pxHigherPriorityTaskWoken ) xTimerGenericCommand( ( xTimer ), tmrCOMMAND_STOP, 0, ( pxHigherPriorityTaskWoken ), 0U )
/**
* portBASE_TYPE xTimerChangePeriodFromISR( xTimerHandle xTimer,
* portTickType xNewPeriod,
* portBASE_TYPE *pxHigherPriorityTaskWoken );
*
* A version of xTimerChangePeriod() that can be called from an interrupt
* service routine.
*
* @param xTimer The handle of the timer that is having its period changed.
*
* @param xNewPeriod The new period for xTimer. Timer periods are specified in
* tick periods, so the constant portTICK_RATE_MS can be used to convert a time
* that has been specified in milliseconds. For example, if the timer must
* expire after 100 ticks, then xNewPeriod should be set to 100. Alternatively,
* if the timer must expire after 500ms, then xNewPeriod can be set to
* ( 500 / portTICK_RATE_MS ) provided configTICK_RATE_HZ is less than
* or equal to 1000.
*
* @param pxHigherPriorityTaskWoken The timer service/daemon task spends most
* of its time in the Blocked state, waiting for messages to arrive on the timer
* command queue. Calling xTimerChangePeriodFromISR() writes a message to the
* timer command queue, so has the potential to transition the timer service/
* daemon task out of the Blocked state. If calling xTimerChangePeriodFromISR()
* causes the timer service/daemon task to leave the Blocked state, and the
* timer service/daemon task has a priority equal to or greater than the
* currently executing task (the task that was interrupted), then
* *pxHigherPriorityTaskWoken will get set to pdTRUE internally within the
* xTimerChangePeriodFromISR() function. If xTimerChangePeriodFromISR() sets
* this value to pdTRUE then a context switch should be performed before the
* interrupt exits.
*
* @return pdFAIL will be returned if the command to change the timers period
* could not be sent to the timer command queue. pdPASS will be returned if the
* command was successfully sent to the timer command queue. When the command
* is actually processed will depend on the priority of the timer service/daemon
* task relative to other tasks in the system. The timer service/daemon task
* priority is set by the configTIMER_TASK_PRIORITY configuration constant.
*
* Example usage:
* @verbatim
* // This scenario assumes xTimer has already been created and started. When
* // an interrupt occurs, the period of xTimer should be changed to 500ms.
*
* // The interrupt service routine that changes the period of xTimer.
* void vAnExampleInterruptServiceRoutine( void )
* {
* portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
*
* // The interrupt has occurred - change the period of xTimer to 500ms.
* // xHigherPriorityTaskWoken was set to pdFALSE where it was defined
* // (within this function). As this is an interrupt service routine, only
* // FreeRTOS API functions that end in "FromISR" can be used.
* if( xTimerChangePeriodFromISR( xTimer, &xHigherPriorityTaskWoken ) != pdPASS )
* {
* // The command to change the timers period was not executed
* // successfully. Take appropriate action here.
* }
*
* // If xHigherPriorityTaskWoken equals pdTRUE, then a context switch
* // should be performed. The syntax required to perform a context switch
* // from inside an ISR varies from port to port, and from compiler to
* // compiler. Inspect the demos for the port you are using to find the
* // actual syntax required.
* if( xHigherPriorityTaskWoken != pdFALSE )
* {
* // Call the interrupt safe yield function here (actual function
* // depends on the FreeRTOS port being used.
* }
* }
* @endverbatim
*/
#define xTimerChangePeriodFromISR( xTimer, xNewPeriod, pxHigherPriorityTaskWoken ) xTimerGenericCommand( ( xTimer ), tmrCOMMAND_CHANGE_PERIOD, ( xNewPeriod ), ( pxHigherPriorityTaskWoken ), 0U )
/**
* portBASE_TYPE xTimerResetFromISR( xTimerHandle xTimer,
* portBASE_TYPE *pxHigherPriorityTaskWoken );
*
* A version of xTimerReset() that can be called from an interrupt service
* routine.
*
* @param xTimer The handle of the timer that is to be started, reset, or
* restarted.
*
* @param pxHigherPriorityTaskWoken The timer service/daemon task spends most
* of its time in the Blocked state, waiting for messages to arrive on the timer
* command queue. Calling xTimerResetFromISR() writes a message to the timer
* command queue, so has the potential to transition the timer service/daemon
* task out of the Blocked state. If calling xTimerResetFromISR() causes the
* timer service/daemon task to leave the Blocked state, and the timer service/
* daemon task has a priority equal to or greater than the currently executing
* task (the task that was interrupted), then *pxHigherPriorityTaskWoken will
* get set to pdTRUE internally within the xTimerResetFromISR() function. If
* xTimerResetFromISR() sets this value to pdTRUE then a context switch should
* be performed before the interrupt exits.
*
* @return pdFAIL will be returned if the reset command could not be sent to
* the timer command queue. pdPASS will be returned if the command was
* successfully sent to the timer command queue. When the command is actually
* processed will depend on the priority of the timer service/daemon task
* relative to other tasks in the system, although the timers expiry time is
* relative to when xTimerResetFromISR() is actually called. The timer service/daemon
* task priority is set by the configTIMER_TASK_PRIORITY configuration constant.
*
* Example usage:
* @verbatim
* // This scenario assumes xBacklightTimer has already been created. When a
* // key is pressed, an LCD back-light is switched on. If 5 seconds pass
* // without a key being pressed, then the LCD back-light is switched off. In
* // this case, the timer is a one-shot timer, and unlike the example given for
* // the xTimerReset() function, the key press event handler is an interrupt
* // service routine.
*
* // The callback function assigned to the one-shot timer. In this case the
* // parameter is not used.
* void vBacklightTimerCallback( xTimerHandle pxTimer )
* {
* // The timer expired, therefore 5 seconds must have passed since a key
* // was pressed. Switch off the LCD back-light.
* vSetBacklightState( BACKLIGHT_OFF );
* }
*
* // The key press interrupt service routine.
* void vKeyPressEventInterruptHandler( void )
* {
* portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
*
* // Ensure the LCD back-light is on, then reset the timer that is
* // responsible for turning the back-light off after 5 seconds of
* // key inactivity. This is an interrupt service routine so can only
* // call FreeRTOS API functions that end in "FromISR".
* vSetBacklightState( BACKLIGHT_ON );
*
* // xTimerStartFromISR() or xTimerResetFromISR() could be called here
* // as both cause the timer to re-calculate its expiry time.
* // xHigherPriorityTaskWoken was initialised to pdFALSE when it was
* // declared (in this function).
* if( xTimerResetFromISR( xBacklightTimer, &xHigherPriorityTaskWoken ) != pdPASS )
* {
* // The reset command was not executed successfully. Take appropriate
* // action here.
* }
*
* // Perform the rest of the key processing here.
*
* // If xHigherPriorityTaskWoken equals pdTRUE, then a context switch
* // should be performed. The syntax required to perform a context switch
* // from inside an ISR varies from port to port, and from compiler to
* // compiler. Inspect the demos for the port you are using to find the
* // actual syntax required.
* if( xHigherPriorityTaskWoken != pdFALSE )
* {
* // Call the interrupt safe yield function here (actual function
* // depends on the FreeRTOS port being used.
* }
* }
* @endverbatim
*/
#define xTimerResetFromISR( xTimer, pxHigherPriorityTaskWoken ) xTimerGenericCommand( ( xTimer ), tmrCOMMAND_START, ( xTaskGetTickCountFromISR() ), ( pxHigherPriorityTaskWoken ), 0U )
/*
* Functions beyond this part are not part of the public API and are intended
* for use by the kernel only.
*/
portBASE_TYPE xTimerCreateTimerTask( void ) PRIVILEGED_FUNCTION;
portBASE_TYPE xTimerGenericCommand( xTimerHandle xTimer, portBASE_TYPE xCommandID, portTickType xOptionalValue, signed portBASE_TYPE *pxHigherPriorityTaskWoken, portTickType xBlockTime ) PRIVILEGED_FUNCTION;
#ifdef __cplusplus
}
#endif
#endif /* TIMERS_H */

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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
#include <stdlib.h>
#include "FreeRTOS.h"
#include "list.h"
/*-----------------------------------------------------------
* PUBLIC LIST API documented in list.h
*----------------------------------------------------------*/
void vListInitialise( xList * const pxList )
{
/* The list structure contains a list item which is used to mark the
end of the list. To initialise the list the list end is inserted
as the only list entry. */
pxList->pxIndex = ( xListItem * ) &( pxList->xListEnd ); /*lint !e826 !e740 The mini list structure is used as the list end to save RAM. This is checked and valid. */
/* The list end value is the highest possible value in the list to
ensure it remains at the end of the list. */
pxList->xListEnd.xItemValue = portMAX_DELAY;
/* The list end next and previous pointers point to itself so we know
when the list is empty. */
pxList->xListEnd.pxNext = ( xListItem * ) &( pxList->xListEnd ); /*lint !e826 !e740 The mini list structure is used as the list end to save RAM. This is checked and valid. */
pxList->xListEnd.pxPrevious = ( xListItem * ) &( pxList->xListEnd );/*lint !e826 !e740 The mini list structure is used as the list end to save RAM. This is checked and valid. */
pxList->uxNumberOfItems = ( unsigned portBASE_TYPE ) 0U;
}
/*-----------------------------------------------------------*/
void vListInitialiseItem( xListItem * const pxItem )
{
/* Make sure the list item is not recorded as being on a list. */
pxItem->pvContainer = NULL;
}
/*-----------------------------------------------------------*/
void vListInsertEnd( xList * const pxList, xListItem * const pxNewListItem )
{
xListItem * pxIndex;
/* Insert a new list item into pxList, but rather than sort the list,
makes the new list item the last item to be removed by a call to
pvListGetOwnerOfNextEntry. */
pxIndex = pxList->pxIndex;
pxNewListItem->pxNext = pxIndex;
pxNewListItem->pxPrevious = pxIndex->pxPrevious;
pxIndex->pxPrevious->pxNext = pxNewListItem;
pxIndex->pxPrevious = pxNewListItem;
/* Remember which list the item is in. */
pxNewListItem->pvContainer = ( void * ) pxList;
( pxList->uxNumberOfItems )++;
}
/*-----------------------------------------------------------*/
void vListInsert( xList * const pxList, xListItem * const pxNewListItem )
{
xListItem *pxIterator;
portTickType xValueOfInsertion;
/* Insert the new list item into the list, sorted in ulListItem order. */
xValueOfInsertion = pxNewListItem->xItemValue;
/* If the list already contains a list item with the same item value then
the new list item should be placed after it. This ensures that TCB's which
are stored in ready lists (all of which have the same ulListItem value)
get an equal share of the CPU. However, if the xItemValue is the same as
the back marker the iteration loop below will not end. This means we need
to guard against this by checking the value first and modifying the
algorithm slightly if necessary. */
if( xValueOfInsertion == portMAX_DELAY )
{
pxIterator = pxList->xListEnd.pxPrevious;
}
else
{
/* *** NOTE ***********************************************************
If you find your application is crashing here then likely causes are:
1) Stack overflow -
see http://www.freertos.org/Stacks-and-stack-overflow-checking.html
2) Incorrect interrupt priority assignment, especially on Cortex-M3
parts where numerically high priority values denote low actual
interrupt priories, which can seem counter intuitive. See
configMAX_SYSCALL_INTERRUPT_PRIORITY on http://www.freertos.org/a00110.html
3) Calling an API function from within a critical section or when
the scheduler is suspended, or calling an API function that does
not end in "FromISR" from an interrupt.
4) Using a queue or semaphore before it has been initialised or
before the scheduler has been started (are interrupts firing
before vTaskStartScheduler() has been called?).
See http://www.freertos.org/FAQHelp.html for more tips.
**********************************************************************/
for( pxIterator = ( xListItem * ) &( pxList->xListEnd ); pxIterator->pxNext->xItemValue <= xValueOfInsertion; pxIterator = pxIterator->pxNext ) /*lint !e826 !e740 The mini list structure is used as the list end to save RAM. This is checked and valid. */
{
/* There is nothing to do here, we are just iterating to the
wanted insertion position. */
}
}
pxNewListItem->pxNext = pxIterator->pxNext;
pxNewListItem->pxNext->pxPrevious = pxNewListItem;
pxNewListItem->pxPrevious = pxIterator;
pxIterator->pxNext = pxNewListItem;
/* Remember which list the item is in. This allows fast removal of the
item later. */
pxNewListItem->pvContainer = ( void * ) pxList;
( pxList->uxNumberOfItems )++;
}
/*-----------------------------------------------------------*/
unsigned portBASE_TYPE uxListRemove( xListItem * const pxItemToRemove )
{
xList * pxList;
pxItemToRemove->pxNext->pxPrevious = pxItemToRemove->pxPrevious;
pxItemToRemove->pxPrevious->pxNext = pxItemToRemove->pxNext;
/* The list item knows which list it is in. Obtain the list from the list
item. */
pxList = ( xList * ) pxItemToRemove->pvContainer;
/* Make sure the index is left pointing to a valid item. */
if( pxList->pxIndex == pxItemToRemove )
{
pxList->pxIndex = pxItemToRemove->pxPrevious;
}
pxItemToRemove->pvContainer = NULL;
( pxList->uxNumberOfItems )--;
return pxList->uxNumberOfItems;
}
/*-----------------------------------------------------------*/

712
FreeRTOS/port.c Normal file
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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
/*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the ARM CM3 port.
*----------------------------------------------------------*/
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/* For backward compatibility, ensure configKERNEL_INTERRUPT_PRIORITY is
defined. The value should also ensure backward compatibility.
FreeRTOS.org versions prior to V4.4.0 did not include this definition. */
#ifndef configKERNEL_INTERRUPT_PRIORITY
#define configKERNEL_INTERRUPT_PRIORITY 255
#endif
#ifndef configSYSTICK_CLOCK_HZ
#define configSYSTICK_CLOCK_HZ configCPU_CLOCK_HZ
#endif
/* Constants required to manipulate the core. Registers first... */
#define portNVIC_SYSTICK_CTRL_REG ( * ( ( volatile unsigned long * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( * ( ( volatile unsigned long * ) 0xe000e014 ) )
#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( * ( ( volatile unsigned long * ) 0xe000e018 ) )
#define portNVIC_SYSPRI2_REG ( * ( ( volatile unsigned long * ) 0xe000ed20 ) )
/* ...then bits in the registers. */
#define portNVIC_SYSTICK_CLK_BIT ( 1UL << 2UL )
#define portNVIC_SYSTICK_INT_BIT ( 1UL << 1UL )
#define portNVIC_SYSTICK_ENABLE_BIT ( 1UL << 0UL )
#define portNVIC_SYSTICK_COUNT_FLAG_BIT ( 1UL << 16UL )
#define portNVIC_PENDSVCLEAR_BIT ( 1UL << 27UL )
#define portNVIC_PEND_SYSTICK_CLEAR_BIT ( 1UL << 25UL )
#define portNVIC_PENDSV_PRI ( ( ( unsigned long ) configKERNEL_INTERRUPT_PRIORITY ) << 16UL )
#define portNVIC_SYSTICK_PRI ( ( ( unsigned long ) configKERNEL_INTERRUPT_PRIORITY ) << 24UL )
/* Constants required to check the validity of an interrupt priority. */
#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
#define portNVIC_IP_REGISTERS_OFFSET_16 ( 0xE000E3F0 )
#define portAIRCR_REG ( * ( ( volatile unsigned long * ) 0xE000ED0C ) )
#define portMAX_8_BIT_VALUE ( ( unsigned char ) 0xff )
#define portTOP_BIT_OF_BYTE ( ( unsigned char ) 0x80 )
#define portMAX_PRIGROUP_BITS ( ( unsigned char ) 7 )
#define portPRIORITY_GROUP_MASK ( 0x07UL << 8UL )
#define portPRIGROUP_SHIFT ( 8UL )
/* Constants required to set up the initial stack. */
#define portINITIAL_XPSR ( 0x01000000UL )
/* The systick is a 24-bit counter. */
#define portMAX_24_BIT_NUMBER ( 0xffffffUL )
/* A fiddle factor to estimate the number of SysTick counts that would have
occurred while the SysTick counter is stopped during tickless idle
calculations. */
#define portMISSED_COUNTS_FACTOR ( 45UL )
/* Let the user override the pre-loading of the initial LR with the address of
prvTaskExitError() in case is messes up unwinding of the stack in the
debugger. */
#ifdef configTASK_RETURN_ADDRESS
#define portTASK_RETURN_ADDRESS configTASK_RETURN_ADDRESS
#else
#define portTASK_RETURN_ADDRESS prvTaskExitError
#endif
/* Each task maintains its own interrupt status in the critical nesting
variable. */
static unsigned portBASE_TYPE uxCriticalNesting = 0xaaaaaaaa;
/*
* Setup the timer to generate the tick interrupts. The implementation in this
* file is weak to allow application writers to change the timer used to
* generate the tick interrupt.
*/
void vPortSetupTimerInterrupt( void );
/*
* Exception handlers.
*/
void xPortPendSVHandler( void ) __attribute__ (( naked ));
void xPortSysTickHandler( void );
void vPortSVCHandler( void ) __attribute__ (( naked ));
/*
* Start first task is a separate function so it can be tested in isolation.
*/
static void prvPortStartFirstTask( void ) __attribute__ (( naked ));
/*
* Used to catch tasks that attempt to return from their implementing function.
*/
static void prvTaskExitError( void );
/*-----------------------------------------------------------*/
/*
* The number of SysTick increments that make up one tick period.
*/
#if configUSE_TICKLESS_IDLE == 1
static unsigned long ulTimerCountsForOneTick = 0;
#endif /* configUSE_TICKLESS_IDLE */
/*
* The maximum number of tick periods that can be suppressed is limited by the
* 24 bit resolution of the SysTick timer.
*/
#if configUSE_TICKLESS_IDLE == 1
static unsigned long xMaximumPossibleSuppressedTicks = 0;
#endif /* configUSE_TICKLESS_IDLE */
/*
* Compensate for the CPU cycles that pass while the SysTick is stopped (low
* power functionality only.
*/
#if configUSE_TICKLESS_IDLE == 1
static unsigned long ulStoppedTimerCompensation = 0;
#endif /* configUSE_TICKLESS_IDLE */
/*
* Used by the portASSERT_IF_INTERRUPT_PRIORITY_INVALID() macro to ensure
* FreeRTOS API functions are not called from interrupts that have been assigned
* a priority above configMAX_SYSCALL_INTERRUPT_PRIORITY.
*/
#if ( configASSERT_DEFINED == 1 )
static unsigned char ucMaxSysCallPriority = 0;
static unsigned long ulMaxPRIGROUPValue = 0;
static const volatile unsigned char * const pcInterruptPriorityRegisters = ( const volatile unsigned char * const ) portNVIC_IP_REGISTERS_OFFSET_16;
#endif /* configASSERT_DEFINED */
/*-----------------------------------------------------------*/
/*
* See header file for description.
*/
portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
{
/* Simulate the stack frame as it would be created by a context switch
interrupt. */
pxTopOfStack--; /* Offset added to account for the way the MCU uses the stack on entry/exit of interrupts. */
*pxTopOfStack = portINITIAL_XPSR; /* xPSR */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) pxCode; /* PC */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) portTASK_RETURN_ADDRESS; /* LR */
pxTopOfStack -= 5; /* R12, R3, R2 and R1. */
*pxTopOfStack = ( portSTACK_TYPE ) pvParameters; /* R0 */
pxTopOfStack -= 8; /* R11, R10, R9, R8, R7, R6, R5 and R4. */
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
static void prvTaskExitError( void )
{
/* A function that implements a task must not exit or attempt to return to
its caller as there is nothing to return to. If a task wants to exit it
should instead call vTaskDelete( NULL ).
Artificially force an assert() to be triggered if configASSERT() is
defined, then stop here so application writers can catch the error. */
configASSERT( uxCriticalNesting == ~0UL );
portDISABLE_INTERRUPTS();
for( ;; );
}
/*-----------------------------------------------------------*/
void vPortSVCHandler( void )
{
__asm volatile (
" ldr r3, pxCurrentTCBConst2 \n" /* Restore the context. */
" ldr r1, [r3] \n" /* Use pxCurrentTCBConst to get the pxCurrentTCB address. */
" ldr r0, [r1] \n" /* The first item in pxCurrentTCB is the task top of stack. */
" ldmia r0!, {r4-r11} \n" /* Pop the registers that are not automatically saved on exception entry and the critical nesting count. */
" msr psp, r0 \n" /* Restore the task stack pointer. */
" mov r0, #0 \n"
" msr basepri, r0 \n"
" orr r14, #0xd \n"
" bx r14 \n"
" \n"
" .align 2 \n"
"pxCurrentTCBConst2: .word pxCurrentTCB \n"
);
}
/*-----------------------------------------------------------*/
static void prvPortStartFirstTask( void )
{
__asm volatile(
" ldr r0, =0xE000ED08 \n" /* Use the NVIC offset register to locate the stack. */
" ldr r0, [r0] \n"
" ldr r0, [r0] \n"
" msr msp, r0 \n" /* Set the msp back to the start of the stack. */
" cpsie i \n" /* Globally enable interrupts. */
" svc 0 \n" /* System call to start first task. */
" nop \n"
);
}
/*-----------------------------------------------------------*/
/*
* See header file for description.
*/
portBASE_TYPE xPortStartScheduler( void )
{
/* configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to 0.
See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html */
configASSERT( configMAX_SYSCALL_INTERRUPT_PRIORITY );
#if( configASSERT_DEFINED == 1 )
{
volatile unsigned long ulOriginalPriority;
volatile char * const pcFirstUserPriorityRegister = ( volatile char * const ) ( portNVIC_IP_REGISTERS_OFFSET_16 + portFIRST_USER_INTERRUPT_NUMBER );
volatile unsigned char ucMaxPriorityValue;
/* Determine the maximum priority from which ISR safe FreeRTOS API
functions can be called. ISR safe functions are those that end in
"FromISR". FreeRTOS maintains separate thread and ISR API functions to
ensure interrupt entry is as fast and simple as possible.
Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = *pcFirstUserPriorityRegister;
/* Determine the number of priority bits available. First write to all
possible bits. */
*pcFirstUserPriorityRegister = portMAX_8_BIT_VALUE;
/* Read the value back to see how many bits stuck. */
ucMaxPriorityValue = *pcFirstUserPriorityRegister;
/* Use the same mask on the maximum system call priority. */
ucMaxSysCallPriority = configMAX_SYSCALL_INTERRUPT_PRIORITY & ucMaxPriorityValue;
/* Calculate the maximum acceptable priority group value for the number
of bits read back. */
ulMaxPRIGROUPValue = portMAX_PRIGROUP_BITS;
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulMaxPRIGROUPValue--;
ucMaxPriorityValue <<= ( unsigned char ) 0x01;
}
/* Shift the priority group value back to its position within the AIRCR
register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
value. */
*pcFirstUserPriorityRegister = ulOriginalPriority;
}
#endif /* conifgASSERT_DEFINED */
/* Make PendSV and SysTick the lowest priority interrupts. */
portNVIC_SYSPRI2_REG |= portNVIC_PENDSV_PRI;
portNVIC_SYSPRI2_REG |= portNVIC_SYSTICK_PRI;
/* Start the timer that generates the tick ISR. Interrupts are disabled
here already. */
vPortSetupTimerInterrupt();
/* Initialise the critical nesting count ready for the first task. */
uxCriticalNesting = 0;
/* Start the first task. */
prvPortStartFirstTask();
/* Should not get here! */
return 0;
}
/*-----------------------------------------------------------*/
void vPortEndScheduler( void )
{
/* It is unlikely that the CM3 port will require this function as there
is nothing to return to. */
}
/*-----------------------------------------------------------*/
void vPortYield( void )
{
/* Set a PendSV to request a context switch. */
portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT;
/* Barriers are normally not required but do ensure the code is completely
within the specified behaviour for the architecture. */
__asm volatile( "dsb" );
__asm volatile( "isb" );
}
/*-----------------------------------------------------------*/
void vPortEnterCritical( void )
{
portDISABLE_INTERRUPTS();
uxCriticalNesting++;
__asm volatile( "dsb" );
__asm volatile( "isb" );
}
/*-----------------------------------------------------------*/
void vPortExitCritical( void )
{
uxCriticalNesting--;
if( uxCriticalNesting == 0 )
{
portENABLE_INTERRUPTS();
}
}
/*-----------------------------------------------------------*/
__attribute__(( naked )) unsigned long ulPortSetInterruptMask( void )
{
__asm volatile \
( \
" mrs r0, basepri \n" \
" mov r1, %0 \n" \
" msr basepri, r1 \n" \
" bx lr \n" \
:: "i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) : "r0", "r1" \
);
/* This return will not be reached but is necessary to prevent compiler
warnings. */
return 0;
}
/*-----------------------------------------------------------*/
__attribute__(( naked )) void vPortClearInterruptMask( unsigned long ulNewMaskValue )
{
__asm volatile \
( \
" msr basepri, r0 \n" \
" bx lr \n" \
:::"r0" \
);
/* Just to avoid compiler warnings. */
( void ) ulNewMaskValue;
}
/*-----------------------------------------------------------*/
void xPortPendSVHandler( void )
{
/* This is a naked function. */
__asm volatile
(
" mrs r0, psp \n"
" \n"
" ldr r3, pxCurrentTCBConst \n" /* Get the location of the current TCB. */
" ldr r2, [r3] \n"
" \n"
" stmdb r0!, {r4-r11} \n" /* Save the remaining registers. */
" str r0, [r2] \n" /* Save the new top of stack into the first member of the TCB. */
" \n"
" stmdb sp!, {r3, r14} \n"
" mov r0, %0 \n"
" msr basepri, r0 \n"
" bl vTaskSwitchContext \n"
" mov r0, #0 \n"
" msr basepri, r0 \n"
" ldmia sp!, {r3, r14} \n"
" \n" /* Restore the context, including the critical nesting count. */
" ldr r1, [r3] \n"
" ldr r0, [r1] \n" /* The first item in pxCurrentTCB is the task top of stack. */
" ldmia r0!, {r4-r11} \n" /* Pop the registers. */
" msr psp, r0 \n"
" bx r14 \n"
" \n"
" .align 2 \n"
"pxCurrentTCBConst: .word pxCurrentTCB \n"
::"i"(configMAX_SYSCALL_INTERRUPT_PRIORITY)
);
}
/*-----------------------------------------------------------*/
void xPortSysTickHandler( void )
{
/* The SysTick runs at the lowest interrupt priority, so when this interrupt
executes all interrupts must be unmasked. There is therefore no need to
save and then restore the interrupt mask value as its value is already
known. */
( void ) portSET_INTERRUPT_MASK_FROM_ISR();
{
/* Increment the RTOS tick. */
if( xTaskIncrementTick() != pdFALSE )
{
/* A context switch is required. Context switching is performed in
the PendSV interrupt. Pend the PendSV interrupt. */
portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT;
}
}
portCLEAR_INTERRUPT_MASK_FROM_ISR( 0 );
}
/*-----------------------------------------------------------*/
#if configUSE_TICKLESS_IDLE == 1
__attribute__((weak)) void vPortSuppressTicksAndSleep( portTickType xExpectedIdleTime )
{
unsigned long ulReloadValue, ulCompleteTickPeriods, ulCompletedSysTickDecrements;
portTickType xModifiableIdleTime;
/* Make sure the SysTick reload value does not overflow the counter. */
if( xExpectedIdleTime > xMaximumPossibleSuppressedTicks )
{
xExpectedIdleTime = xMaximumPossibleSuppressedTicks;
}
/* Stop the SysTick momentarily. The time the SysTick is stopped for
is accounted for as best it can be, but using the tickless mode will
inevitably result in some tiny drift of the time maintained by the
kernel with respect to calendar time. */
portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT;
/* Calculate the reload value required to wait xExpectedIdleTime
tick periods. -1 is used because this code will execute part way
through one of the tick periods. */
ulReloadValue = portNVIC_SYSTICK_CURRENT_VALUE_REG + ( ulTimerCountsForOneTick * ( xExpectedIdleTime - 1UL ) );
if( ulReloadValue > ulStoppedTimerCompensation )
{
ulReloadValue -= ulStoppedTimerCompensation;
}
/* Enter a critical section but don't use the taskENTER_CRITICAL()
method as that will mask interrupts that should exit sleep mode. */
__asm volatile( "cpsid i" );
/* If a context switch is pending or a task is waiting for the scheduler
to be unsuspended then abandon the low power entry. */
if( eTaskConfirmSleepModeStatus() == eAbortSleep )
{
/* Restart from whatever is left in the count register to complete
this tick period. */
portNVIC_SYSTICK_LOAD_REG = portNVIC_SYSTICK_CURRENT_VALUE_REG;
/* Restart SysTick. */
portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT | portNVIC_SYSTICK_ENABLE_BIT;
/* Reset the reload register to the value required for normal tick
periods. */
portNVIC_SYSTICK_LOAD_REG = ulTimerCountsForOneTick - 1UL;
/* Re-enable interrupts - see comments above the cpsid instruction()
above. */
__asm volatile( "cpsie i" );
}
else
{
/* Set the new reload value. */
portNVIC_SYSTICK_LOAD_REG = ulReloadValue;
/* Clear the SysTick count flag and set the count value back to
zero. */
portNVIC_SYSTICK_CURRENT_VALUE_REG = 0UL;
/* Restart SysTick. */
portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT | portNVIC_SYSTICK_ENABLE_BIT;
/* Sleep until something happens. configPRE_SLEEP_PROCESSING() can
set its parameter to 0 to indicate that its implementation contains
its own wait for interrupt or wait for event instruction, and so wfi
should not be executed again. However, the original expected idle
time variable must remain unmodified, so a copy is taken. */
xModifiableIdleTime = xExpectedIdleTime;
configPRE_SLEEP_PROCESSING( xModifiableIdleTime );
if( xModifiableIdleTime > 0 )
{
__asm volatile( "dsb" );
__asm volatile( "wfi" );
__asm volatile( "isb" );
}
configPOST_SLEEP_PROCESSING( xExpectedIdleTime );
/* Stop SysTick. Again, the time the SysTick is stopped for is
accounted for as best it can be, but using the tickless mode will
inevitably result in some tiny drift of the time maintained by the
kernel with respect to calendar time. */
portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT;
/* Re-enable interrupts - see comments above the cpsid instruction()
above. */
__asm volatile( "cpsie i" );
if( ( portNVIC_SYSTICK_CTRL_REG & portNVIC_SYSTICK_COUNT_FLAG_BIT ) != 0 )
{
unsigned long ulCalculatedLoadValue;
/* The tick interrupt has already executed, and the SysTick
count reloaded with ulReloadValue. Reset the
portNVIC_SYSTICK_LOAD_REG with whatever remains of this tick
period. */
ulCalculatedLoadValue = ( ulTimerCountsForOneTick - 1UL ) - ( ulReloadValue - portNVIC_SYSTICK_CURRENT_VALUE_REG );
/* Don't allow a tiny value, or values that have somehow
underflowed because the post sleep hook did something
that took too long. */
if( ( ulCalculatedLoadValue < ulStoppedTimerCompensation ) || ( ulCalculatedLoadValue > ulTimerCountsForOneTick ) )
{
ulCalculatedLoadValue = ( ulTimerCountsForOneTick - 1UL );
}
portNVIC_SYSTICK_LOAD_REG = ulCalculatedLoadValue;
/* The tick interrupt handler will already have pended the tick
processing in the kernel. As the pending tick will be
processed as soon as this function exits, the tick value
maintained by the tick is stepped forward by one less than the
time spent waiting. */
ulCompleteTickPeriods = xExpectedIdleTime - 1UL;
}
else
{
/* Something other than the tick interrupt ended the sleep.
Work out how long the sleep lasted rounded to complete tick
periods (not the ulReload value which accounted for part
ticks). */
ulCompletedSysTickDecrements = ( xExpectedIdleTime * ulTimerCountsForOneTick ) - portNVIC_SYSTICK_CURRENT_VALUE_REG;
/* How many complete tick periods passed while the processor
was waiting? */
ulCompleteTickPeriods = ulCompletedSysTickDecrements / ulTimerCountsForOneTick;
/* The reload value is set to whatever fraction of a single tick
period remains. */
portNVIC_SYSTICK_LOAD_REG = ( ( ulCompleteTickPeriods + 1 ) * ulTimerCountsForOneTick ) - ulCompletedSysTickDecrements;
}
/* Restart SysTick so it runs from portNVIC_SYSTICK_LOAD_REG
again, then set portNVIC_SYSTICK_LOAD_REG back to its standard
value. The critical section is used to ensure the tick interrupt
can only execute once in the case that the reload register is near
zero. */
portNVIC_SYSTICK_CURRENT_VALUE_REG = 0UL;
portENTER_CRITICAL();
{
portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT | portNVIC_SYSTICK_ENABLE_BIT;
vTaskStepTick( ulCompleteTickPeriods );
portNVIC_SYSTICK_LOAD_REG = ulTimerCountsForOneTick - 1UL;
}
portEXIT_CRITICAL();
}
}
#endif /* #if configUSE_TICKLESS_IDLE */
/*-----------------------------------------------------------*/
/*
* Setup the systick timer to generate the tick interrupts at the required
* frequency.
*/
__attribute__(( weak )) void vPortSetupTimerInterrupt( void )
{
/* Calculate the constants required to configure the tick interrupt. */
#if configUSE_TICKLESS_IDLE == 1
{
ulTimerCountsForOneTick = ( configSYSTICK_CLOCK_HZ / configTICK_RATE_HZ );
xMaximumPossibleSuppressedTicks = portMAX_24_BIT_NUMBER / ulTimerCountsForOneTick;
ulStoppedTimerCompensation = portMISSED_COUNTS_FACTOR / ( configCPU_CLOCK_HZ / configSYSTICK_CLOCK_HZ );
}
#endif /* configUSE_TICKLESS_IDLE */
/* Configure SysTick to interrupt at the requested rate. */
portNVIC_SYSTICK_LOAD_REG = ( configSYSTICK_CLOCK_HZ / configTICK_RATE_HZ ) - 1UL;;
portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT | portNVIC_SYSTICK_ENABLE_BIT;
}
/*-----------------------------------------------------------*/
#if( configASSERT_DEFINED == 1 )
void vPortValidateInterruptPriority( void )
{
unsigned long ulCurrentInterrupt;
unsigned char ucCurrentPriority;
/* Obtain the number of the currently executing interrupt. */
__asm volatile( "mrs %0, ipsr" : "=r"( ulCurrentInterrupt ) );
/* Is the interrupt number a user defined interrupt? */
if( ulCurrentInterrupt >= portFIRST_USER_INTERRUPT_NUMBER )
{
/* Look up the interrupt's priority. */
ucCurrentPriority = pcInterruptPriorityRegisters[ ulCurrentInterrupt ];
/* The following assertion will fail if a service routine (ISR) for
an interrupt that has been assigned a priority above
configMAX_SYSCALL_INTERRUPT_PRIORITY calls an ISR safe FreeRTOS API
function. ISR safe FreeRTOS API functions must *only* be called
from interrupts that have been assigned a priority at or below
configMAX_SYSCALL_INTERRUPT_PRIORITY.
Numerically low interrupt priority numbers represent logically high
interrupt priorities, therefore the priority of the interrupt must
be set to a value equal to or numerically *higher* than
configMAX_SYSCALL_INTERRUPT_PRIORITY.
Interrupts that use the FreeRTOS API must not be left at their
default priority of zero as that is the highest possible priority,
which is guaranteed to be above configMAX_SYSCALL_INTERRUPT_PRIORITY,
and therefore also guaranteed to be invalid.
FreeRTOS maintains separate thread and ISR API functions to ensure
interrupt entry is as fast and simple as possible.
The following links provide detailed information:
http://www.freertos.org/RTOS-Cortex-M3-M4.html
http://www.freertos.org/FAQHelp.html */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}
/* Priority grouping: The interrupt controller (NVIC) allows the bits
that define each interrupt's priority to be split between bits that
define the interrupt's pre-emption priority bits and bits that define
the interrupt's sub-priority. For simplicity all bits must be defined
to be pre-emption priority bits. The following assertion will fail if
this is not the case (if some bits represent a sub-priority).
If the application only uses CMSIS libraries for interrupt
configuration then the correct setting can be achieved on all Cortex-M
devices by calling NVIC_SetPriorityGrouping( 0 ); before starting the
scheduler. Note however that some vendor specific peripheral libraries
assume a non-zero priority group setting, in which cases using a value
of zero will result in unpredicable behaviour. */
configASSERT( ( portAIRCR_REG & portPRIORITY_GROUP_MASK ) <= ulMaxPRIGROUPValue );
}
#endif /* configASSERT_DEFINED */

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FreeRTOS/readme.txt Normal file
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@ -0,0 +1,17 @@
Each real time kernel port consists of three files that contain the core kernel
components and are common to every port, and one or more files that are
specific to a particular microcontroller and or compiler.
+ The FreeRTOS/Source directory contains the three files that are common to
every port - list.c, queue.c and tasks.c. The kernel is contained within these
three files. croutine.c implements the optional co-routine functionality - which
is normally only used on very memory limited systems.
+ The FreeRTOS/Source/Portable directory contains the files that are specific to
a particular microcontroller and or compiler.
+ The FreeRTOS/Source/include directory contains the real time kernel header
files.
See the readme file in the FreeRTOS/Source/Portable directory for more
information.

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707
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@ -0,0 +1,707 @@
/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
/* Standard includes. */
#include <stdlib.h>
/* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining
all the API functions to use the MPU wrappers. That should only be done when
task.h is included from an application file. */
#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
#include "timers.h"
/* Lint e961 and e750 are suppressed as a MISRA exception justified because the
MPU ports require MPU_WRAPPERS_INCLUDED_FROM_API_FILE to be defined for the
header files above, but not in this file, in order to generate the correct
privileged Vs unprivileged linkage and placement. */
#undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE /*lint !e961 !e750. */
/* This entire source file will be skipped if the application is not configured
to include software timer functionality. This #if is closed at the very bottom
of this file. If you want to include software timer functionality then ensure
configUSE_TIMERS is set to 1 in FreeRTOSConfig.h. */
#if ( configUSE_TIMERS == 1 )
/* Misc definitions. */
#define tmrNO_DELAY ( portTickType ) 0U
/* The definition of the timers themselves. */
typedef struct tmrTimerControl
{
const signed char *pcTimerName; /*<< Text name. This is not used by the kernel, it is included simply to make debugging easier. */
xListItem xTimerListItem; /*<< Standard linked list item as used by all kernel features for event management. */
portTickType xTimerPeriodInTicks;/*<< How quickly and often the timer expires. */
unsigned portBASE_TYPE uxAutoReload; /*<< Set to pdTRUE if the timer should be automatically restarted once expired. Set to pdFALSE if the timer is, in effect, a one shot timer. */
void *pvTimerID; /*<< An ID to identify the timer. This allows the timer to be identified when the same callback is used for multiple timers. */
tmrTIMER_CALLBACK pxCallbackFunction; /*<< The function that will be called when the timer expires. */
} xTIMER;
/* The definition of messages that can be sent and received on the timer
queue. */
typedef struct tmrTimerQueueMessage
{
portBASE_TYPE xMessageID; /*<< The command being sent to the timer service task. */
portTickType xMessageValue; /*<< An optional value used by a subset of commands, for example, when changing the period of a timer. */
xTIMER * pxTimer; /*<< The timer to which the command will be applied. */
} xTIMER_MESSAGE;
/*lint -e956 A manual analysis and inspection has been used to determine which
static variables must be declared volatile. */
/* The list in which active timers are stored. Timers are referenced in expire
time order, with the nearest expiry time at the front of the list. Only the
timer service task is allowed to access xActiveTimerList. */
PRIVILEGED_DATA static xList xActiveTimerList1;
PRIVILEGED_DATA static xList xActiveTimerList2;
PRIVILEGED_DATA static xList *pxCurrentTimerList;
PRIVILEGED_DATA static xList *pxOverflowTimerList;
/* A queue that is used to send commands to the timer service task. */
PRIVILEGED_DATA static xQueueHandle xTimerQueue = NULL;
#if ( INCLUDE_xTimerGetTimerDaemonTaskHandle == 1 )
PRIVILEGED_DATA static xTaskHandle xTimerTaskHandle = NULL;
#endif
/*lint +e956 */
/*-----------------------------------------------------------*/
/*
* Initialise the infrastructure used by the timer service task if it has not
* been initialised already.
*/
static void prvCheckForValidListAndQueue( void ) PRIVILEGED_FUNCTION;
/*
* The timer service task (daemon). Timer functionality is controlled by this
* task. Other tasks communicate with the timer service task using the
* xTimerQueue queue.
*/
static void prvTimerTask( void *pvParameters ) PRIVILEGED_FUNCTION;
/*
* Called by the timer service task to interpret and process a command it
* received on the timer queue.
*/
static void prvProcessReceivedCommands( void ) PRIVILEGED_FUNCTION;
/*
* Insert the timer into either xActiveTimerList1, or xActiveTimerList2,
* depending on if the expire time causes a timer counter overflow.
*/
static portBASE_TYPE prvInsertTimerInActiveList( xTIMER *pxTimer, portTickType xNextExpiryTime, portTickType xTimeNow, portTickType xCommandTime ) PRIVILEGED_FUNCTION;
/*
* An active timer has reached its expire time. Reload the timer if it is an
* auto reload timer, then call its callback.
*/
static void prvProcessExpiredTimer( portTickType xNextExpireTime, portTickType xTimeNow ) PRIVILEGED_FUNCTION;
/*
* The tick count has overflowed. Switch the timer lists after ensuring the
* current timer list does not still reference some timers.
*/
static void prvSwitchTimerLists( portTickType xLastTime ) PRIVILEGED_FUNCTION;
/*
* Obtain the current tick count, setting *pxTimerListsWereSwitched to pdTRUE
* if a tick count overflow occurred since prvSampleTimeNow() was last called.
*/
static portTickType prvSampleTimeNow( portBASE_TYPE *pxTimerListsWereSwitched ) PRIVILEGED_FUNCTION;
/*
* If the timer list contains any active timers then return the expire time of
* the timer that will expire first and set *pxListWasEmpty to false. If the
* timer list does not contain any timers then return 0 and set *pxListWasEmpty
* to pdTRUE.
*/
static portTickType prvGetNextExpireTime( portBASE_TYPE *pxListWasEmpty ) PRIVILEGED_FUNCTION;
/*
* If a timer has expired, process it. Otherwise, block the timer service task
* until either a timer does expire or a command is received.
*/
static void prvProcessTimerOrBlockTask( portTickType xNextExpireTime, portBASE_TYPE xListWasEmpty ) PRIVILEGED_FUNCTION;
/*-----------------------------------------------------------*/
portBASE_TYPE xTimerCreateTimerTask( void )
{
portBASE_TYPE xReturn = pdFAIL;
/* This function is called when the scheduler is started if
configUSE_TIMERS is set to 1. Check that the infrastructure used by the
timer service task has been created/initialised. If timers have already
been created then the initialisation will already have been performed. */
prvCheckForValidListAndQueue();
if( xTimerQueue != NULL )
{
#if ( INCLUDE_xTimerGetTimerDaemonTaskHandle == 1 )
{
/* Create the timer task, storing its handle in xTimerTaskHandle so
it can be returned by the xTimerGetTimerDaemonTaskHandle() function. */
xReturn = xTaskCreate( prvTimerTask, ( const signed char * ) "Tmr Svc", ( unsigned short ) configTIMER_TASK_STACK_DEPTH, NULL, ( ( unsigned portBASE_TYPE ) configTIMER_TASK_PRIORITY ) | portPRIVILEGE_BIT, &xTimerTaskHandle );
}
#else
{
/* Create the timer task without storing its handle. */
xReturn = xTaskCreate( prvTimerTask, ( const signed char * ) "Tmr Svc", ( unsigned short ) configTIMER_TASK_STACK_DEPTH, NULL, ( ( unsigned portBASE_TYPE ) configTIMER_TASK_PRIORITY ) | portPRIVILEGE_BIT, NULL);
}
#endif
}
configASSERT( xReturn );
return xReturn;
}
/*-----------------------------------------------------------*/
xTimerHandle xTimerCreate( const signed char * const pcTimerName, portTickType xTimerPeriodInTicks, unsigned portBASE_TYPE uxAutoReload, void *pvTimerID, tmrTIMER_CALLBACK pxCallbackFunction )
{
xTIMER *pxNewTimer;
/* Allocate the timer structure. */
if( xTimerPeriodInTicks == ( portTickType ) 0U )
{
pxNewTimer = NULL;
}
else
{
pxNewTimer = ( xTIMER * ) pvPortMalloc( sizeof( xTIMER ) );
if( pxNewTimer != NULL )
{
/* Ensure the infrastructure used by the timer service task has been
created/initialised. */
prvCheckForValidListAndQueue();
/* Initialise the timer structure members using the function parameters. */
pxNewTimer->pcTimerName = pcTimerName;
pxNewTimer->xTimerPeriodInTicks = xTimerPeriodInTicks;
pxNewTimer->uxAutoReload = uxAutoReload;
pxNewTimer->pvTimerID = pvTimerID;
pxNewTimer->pxCallbackFunction = pxCallbackFunction;
vListInitialiseItem( &( pxNewTimer->xTimerListItem ) );
traceTIMER_CREATE( pxNewTimer );
}
else
{
traceTIMER_CREATE_FAILED();
}
}
/* 0 is not a valid value for xTimerPeriodInTicks. */
configASSERT( ( xTimerPeriodInTicks > 0 ) );
return ( xTimerHandle ) pxNewTimer;
}
/*-----------------------------------------------------------*/
portBASE_TYPE xTimerGenericCommand( xTimerHandle xTimer, portBASE_TYPE xCommandID, portTickType xOptionalValue, signed portBASE_TYPE *pxHigherPriorityTaskWoken, portTickType xBlockTime )
{
portBASE_TYPE xReturn = pdFAIL;
xTIMER_MESSAGE xMessage;
/* Send a message to the timer service task to perform a particular action
on a particular timer definition. */
if( xTimerQueue != NULL )
{
/* Send a command to the timer service task to start the xTimer timer. */
xMessage.xMessageID = xCommandID;
xMessage.xMessageValue = xOptionalValue;
xMessage.pxTimer = ( xTIMER * ) xTimer;
if( pxHigherPriorityTaskWoken == NULL )
{
if( xTaskGetSchedulerState() == taskSCHEDULER_RUNNING )
{
xReturn = xQueueSendToBack( xTimerQueue, &xMessage, xBlockTime );
}
else
{
xReturn = xQueueSendToBack( xTimerQueue, &xMessage, tmrNO_DELAY );
}
}
else
{
xReturn = xQueueSendToBackFromISR( xTimerQueue, &xMessage, pxHigherPriorityTaskWoken );
}
traceTIMER_COMMAND_SEND( xTimer, xCommandID, xOptionalValue, xReturn );
}
return xReturn;
}
/*-----------------------------------------------------------*/
#if ( INCLUDE_xTimerGetTimerDaemonTaskHandle == 1 )
xTaskHandle xTimerGetTimerDaemonTaskHandle( void )
{
/* If xTimerGetTimerDaemonTaskHandle() is called before the scheduler has been
started, then xTimerTaskHandle will be NULL. */
configASSERT( ( xTimerTaskHandle != NULL ) );
return xTimerTaskHandle;
}
#endif
/*-----------------------------------------------------------*/
static void prvProcessExpiredTimer( portTickType xNextExpireTime, portTickType xTimeNow )
{
xTIMER *pxTimer;
portBASE_TYPE xResult;
/* Remove the timer from the list of active timers. A check has already
been performed to ensure the list is not empty. */
pxTimer = ( xTIMER * ) listGET_OWNER_OF_HEAD_ENTRY( pxCurrentTimerList );
( void ) uxListRemove( &( pxTimer->xTimerListItem ) );
traceTIMER_EXPIRED( pxTimer );
/* If the timer is an auto reload timer then calculate the next
expiry time and re-insert the timer in the list of active timers. */
if( pxTimer->uxAutoReload == ( unsigned portBASE_TYPE ) pdTRUE )
{
/* This is the only time a timer is inserted into a list using
a time relative to anything other than the current time. It
will therefore be inserted into the correct list relative to
the time this task thinks it is now, even if a command to
switch lists due to a tick count overflow is already waiting in
the timer queue. */
if( prvInsertTimerInActiveList( pxTimer, ( xNextExpireTime + pxTimer->xTimerPeriodInTicks ), xTimeNow, xNextExpireTime ) == pdTRUE )
{
/* The timer expired before it was added to the active timer
list. Reload it now. */
xResult = xTimerGenericCommand( pxTimer, tmrCOMMAND_START, xNextExpireTime, NULL, tmrNO_DELAY );
configASSERT( xResult );
( void ) xResult;
}
}
/* Call the timer callback. */
pxTimer->pxCallbackFunction( ( xTimerHandle ) pxTimer );
}
/*-----------------------------------------------------------*/
static void prvTimerTask( void *pvParameters )
{
portTickType xNextExpireTime;
portBASE_TYPE xListWasEmpty;
/* Just to avoid compiler warnings. */
( void ) pvParameters;
for( ;; )
{
/* Query the timers list to see if it contains any timers, and if so,
obtain the time at which the next timer will expire. */
xNextExpireTime = prvGetNextExpireTime( &xListWasEmpty );
/* If a timer has expired, process it. Otherwise, block this task
until either a timer does expire, or a command is received. */
prvProcessTimerOrBlockTask( xNextExpireTime, xListWasEmpty );
/* Empty the command queue. */
prvProcessReceivedCommands();
}
}
/*-----------------------------------------------------------*/
static void prvProcessTimerOrBlockTask( portTickType xNextExpireTime, portBASE_TYPE xListWasEmpty )
{
portTickType xTimeNow;
portBASE_TYPE xTimerListsWereSwitched;
vTaskSuspendAll();
{
/* Obtain the time now to make an assessment as to whether the timer
has expired or not. If obtaining the time causes the lists to switch
then don't process this timer as any timers that remained in the list
when the lists were switched will have been processed within the
prvSampelTimeNow() function. */
xTimeNow = prvSampleTimeNow( &xTimerListsWereSwitched );
if( xTimerListsWereSwitched == pdFALSE )
{
/* The tick count has not overflowed, has the timer expired? */
if( ( xListWasEmpty == pdFALSE ) && ( xNextExpireTime <= xTimeNow ) )
{
( void ) xTaskResumeAll();
prvProcessExpiredTimer( xNextExpireTime, xTimeNow );
}
else
{
/* The tick count has not overflowed, and the next expire
time has not been reached yet. This task should therefore
block to wait for the next expire time or a command to be
received - whichever comes first. The following line cannot
be reached unless xNextExpireTime > xTimeNow, except in the
case when the current timer list is empty. */
vQueueWaitForMessageRestricted( xTimerQueue, ( xNextExpireTime - xTimeNow ) );
if( xTaskResumeAll() == pdFALSE )
{
/* Yield to wait for either a command to arrive, or the block time
to expire. If a command arrived between the critical section being
exited and this yield then the yield will not cause the task
to block. */
portYIELD_WITHIN_API();
}
}
}
else
{
( void ) xTaskResumeAll();
}
}
}
/*-----------------------------------------------------------*/
static portTickType prvGetNextExpireTime( portBASE_TYPE *pxListWasEmpty )
{
portTickType xNextExpireTime;
/* Timers are listed in expiry time order, with the head of the list
referencing the task that will expire first. Obtain the time at which
the timer with the nearest expiry time will expire. If there are no
active timers then just set the next expire time to 0. That will cause
this task to unblock when the tick count overflows, at which point the
timer lists will be switched and the next expiry time can be
re-assessed. */
*pxListWasEmpty = listLIST_IS_EMPTY( pxCurrentTimerList );
if( *pxListWasEmpty == pdFALSE )
{
xNextExpireTime = listGET_ITEM_VALUE_OF_HEAD_ENTRY( pxCurrentTimerList );
}
else
{
/* Ensure the task unblocks when the tick count rolls over. */
xNextExpireTime = ( portTickType ) 0U;
}
return xNextExpireTime;
}
/*-----------------------------------------------------------*/
static portTickType prvSampleTimeNow( portBASE_TYPE *pxTimerListsWereSwitched )
{
portTickType xTimeNow;
PRIVILEGED_DATA static portTickType xLastTime = ( portTickType ) 0U; /*lint !e956 Variable is only accessible to one task. */
xTimeNow = xTaskGetTickCount();
if( xTimeNow < xLastTime )
{
prvSwitchTimerLists( xLastTime );
*pxTimerListsWereSwitched = pdTRUE;
}
else
{
*pxTimerListsWereSwitched = pdFALSE;
}
xLastTime = xTimeNow;
return xTimeNow;
}
/*-----------------------------------------------------------*/
static portBASE_TYPE prvInsertTimerInActiveList( xTIMER *pxTimer, portTickType xNextExpiryTime, portTickType xTimeNow, portTickType xCommandTime )
{
portBASE_TYPE xProcessTimerNow = pdFALSE;
listSET_LIST_ITEM_VALUE( &( pxTimer->xTimerListItem ), xNextExpiryTime );
listSET_LIST_ITEM_OWNER( &( pxTimer->xTimerListItem ), pxTimer );
if( xNextExpiryTime <= xTimeNow )
{
/* Has the expiry time elapsed between the command to start/reset a
timer was issued, and the time the command was processed? */
if( ( xTimeNow - xCommandTime ) >= pxTimer->xTimerPeriodInTicks )
{
/* The time between a command being issued and the command being
processed actually exceeds the timers period. */
xProcessTimerNow = pdTRUE;
}
else
{
vListInsert( pxOverflowTimerList, &( pxTimer->xTimerListItem ) );
}
}
else
{
if( ( xTimeNow < xCommandTime ) && ( xNextExpiryTime >= xCommandTime ) )
{
/* If, since the command was issued, the tick count has overflowed
but the expiry time has not, then the timer must have already passed
its expiry time and should be processed immediately. */
xProcessTimerNow = pdTRUE;
}
else
{
vListInsert( pxCurrentTimerList, &( pxTimer->xTimerListItem ) );
}
}
return xProcessTimerNow;
}
/*-----------------------------------------------------------*/
static void prvProcessReceivedCommands( void )
{
xTIMER_MESSAGE xMessage;
xTIMER *pxTimer;
portBASE_TYPE xTimerListsWereSwitched, xResult;
portTickType xTimeNow;
while( xQueueReceive( xTimerQueue, &xMessage, tmrNO_DELAY ) != pdFAIL ) /*lint !e603 xMessage does not have to be initialised as it is passed out, not in, and it is not used unless xQueueReceive() returns pdTRUE. */
{
pxTimer = xMessage.pxTimer;
if( listIS_CONTAINED_WITHIN( NULL, &( pxTimer->xTimerListItem ) ) == pdFALSE )
{
/* The timer is in a list, remove it. */
( void ) uxListRemove( &( pxTimer->xTimerListItem ) );
}
traceTIMER_COMMAND_RECEIVED( pxTimer, xMessage.xMessageID, xMessage.xMessageValue );
/* In this case the xTimerListsWereSwitched parameter is not used, but
it must be present in the function call. prvSampleTimeNow() must be
called after the message is received from xTimerQueue so there is no
possibility of a higher priority task adding a message to the message
queue with a time that is ahead of the timer daemon task (because it
pre-empted the timer daemon task after the xTimeNow value was set). */
xTimeNow = prvSampleTimeNow( &xTimerListsWereSwitched );
switch( xMessage.xMessageID )
{
case tmrCOMMAND_START :
/* Start or restart a timer. */
if( prvInsertTimerInActiveList( pxTimer, xMessage.xMessageValue + pxTimer->xTimerPeriodInTicks, xTimeNow, xMessage.xMessageValue ) == pdTRUE )
{
/* The timer expired before it was added to the active timer
list. Process it now. */
pxTimer->pxCallbackFunction( ( xTimerHandle ) pxTimer );
if( pxTimer->uxAutoReload == ( unsigned portBASE_TYPE ) pdTRUE )
{
xResult = xTimerGenericCommand( pxTimer, tmrCOMMAND_START, xMessage.xMessageValue + pxTimer->xTimerPeriodInTicks, NULL, tmrNO_DELAY );
configASSERT( xResult );
( void ) xResult;
}
}
break;
case tmrCOMMAND_STOP :
/* The timer has already been removed from the active list.
There is nothing to do here. */
break;
case tmrCOMMAND_CHANGE_PERIOD :
pxTimer->xTimerPeriodInTicks = xMessage.xMessageValue;
configASSERT( ( pxTimer->xTimerPeriodInTicks > 0 ) );
/* The new period does not really have a reference, and can be
longer or shorter than the old one. The command time is
therefore set to the current time, and as the period cannot be
zero the next expiry time can only be in the future, meaning
(unlike for the xTimerStart() case above) there is no fail case
that needs to be handled here. */
( void ) prvInsertTimerInActiveList( pxTimer, ( xTimeNow + pxTimer->xTimerPeriodInTicks ), xTimeNow, xTimeNow );
break;
case tmrCOMMAND_DELETE :
/* The timer has already been removed from the active list,
just free up the memory. */
vPortFree( pxTimer );
break;
default :
/* Don't expect to get here. */
break;
}
}
}
/*-----------------------------------------------------------*/
static void prvSwitchTimerLists( portTickType xLastTime )
{
portTickType xNextExpireTime, xReloadTime;
xList *pxTemp;
xTIMER *pxTimer;
portBASE_TYPE xResult;
/* Remove compiler warnings if configASSERT() is not defined. */
( void ) xLastTime;
/* The tick count has overflowed. The timer lists must be switched.
If there are any timers still referenced from the current timer list
then they must have expired and should be processed before the lists
are switched. */
while( listLIST_IS_EMPTY( pxCurrentTimerList ) == pdFALSE )
{
xNextExpireTime = listGET_ITEM_VALUE_OF_HEAD_ENTRY( pxCurrentTimerList );
/* Remove the timer from the list. */
pxTimer = ( xTIMER * ) listGET_OWNER_OF_HEAD_ENTRY( pxCurrentTimerList );
( void ) uxListRemove( &( pxTimer->xTimerListItem ) );
/* Execute its callback, then send a command to restart the timer if
it is an auto-reload timer. It cannot be restarted here as the lists
have not yet been switched. */
pxTimer->pxCallbackFunction( ( xTimerHandle ) pxTimer );
if( pxTimer->uxAutoReload == ( unsigned portBASE_TYPE ) pdTRUE )
{
/* Calculate the reload value, and if the reload value results in
the timer going into the same timer list then it has already expired
and the timer should be re-inserted into the current list so it is
processed again within this loop. Otherwise a command should be sent
to restart the timer to ensure it is only inserted into a list after
the lists have been swapped. */
xReloadTime = ( xNextExpireTime + pxTimer->xTimerPeriodInTicks );
if( xReloadTime > xNextExpireTime )
{
listSET_LIST_ITEM_VALUE( &( pxTimer->xTimerListItem ), xReloadTime );
listSET_LIST_ITEM_OWNER( &( pxTimer->xTimerListItem ), pxTimer );
vListInsert( pxCurrentTimerList, &( pxTimer->xTimerListItem ) );
}
else
{
xResult = xTimerGenericCommand( pxTimer, tmrCOMMAND_START, xNextExpireTime, NULL, tmrNO_DELAY );
configASSERT( xResult );
( void ) xResult;
}
}
}
pxTemp = pxCurrentTimerList;
pxCurrentTimerList = pxOverflowTimerList;
pxOverflowTimerList = pxTemp;
}
/*-----------------------------------------------------------*/
static void prvCheckForValidListAndQueue( void )
{
/* Check that the list from which active timers are referenced, and the
queue used to communicate with the timer service, have been
initialised. */
taskENTER_CRITICAL();
{
if( xTimerQueue == NULL )
{
vListInitialise( &xActiveTimerList1 );
vListInitialise( &xActiveTimerList2 );
pxCurrentTimerList = &xActiveTimerList1;
pxOverflowTimerList = &xActiveTimerList2;
xTimerQueue = xQueueCreate( ( unsigned portBASE_TYPE ) configTIMER_QUEUE_LENGTH, sizeof( xTIMER_MESSAGE ) );
}
}
taskEXIT_CRITICAL();
}
/*-----------------------------------------------------------*/
portBASE_TYPE xTimerIsTimerActive( xTimerHandle xTimer )
{
portBASE_TYPE xTimerIsInActiveList;
xTIMER *pxTimer = ( xTIMER * ) xTimer;
/* Is the timer in the list of active timers? */
taskENTER_CRITICAL();
{
/* Checking to see if it is in the NULL list in effect checks to see if
it is referenced from either the current or the overflow timer lists in
one go, but the logic has to be reversed, hence the '!'. */
xTimerIsInActiveList = !( listIS_CONTAINED_WITHIN( NULL, &( pxTimer->xTimerListItem ) ) );
}
taskEXIT_CRITICAL();
return xTimerIsInActiveList;
}
/*-----------------------------------------------------------*/
void *pvTimerGetTimerID( xTimerHandle xTimer )
{
xTIMER *pxTimer = ( xTIMER * ) xTimer;
return pxTimer->pvTimerID;
}
/*-----------------------------------------------------------*/
/* This entire source file will be skipped if the application is not configured
to include software timer functionality. If you want to include software timer
functionality then ensure configUSE_TIMERS is set to 1 in FreeRTOSConfig.h. */
#endif /* configUSE_TIMERS == 1 */

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FreeRTOSConfig.h Normal file
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/*
FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
#ifndef FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_H
/*-----------------------------------------------------------
* Application specific definitions.
*
* These definitions should be adjusted for your particular hardware and
* application requirements.
*
* THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE
* FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE.
*
* See http://www.freertos.org/a00110.html.
*----------------------------------------------------------*/
#define configUSE_PREEMPTION 1
#define configUSE_IDLE_HOOK 1
#define configUSE_TICK_HOOK 0
#define configCPU_CLOCK_HZ ( 24000000UL )
#define configTICK_RATE_HZ ( ( portTickType ) 1000 )
#define configMAX_PRIORITIES ( ( unsigned portBASE_TYPE ) 5 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 70 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 2 * 1024 ) )
#define configMAX_TASK_NAME_LEN ( 10 )
#define configUSE_TRACE_FACILITY 0
#define configUSE_16_BIT_TICKS 0
#define configIDLE_SHOULD_YIELD 1
#define configUSE_MUTEXES 1
#define configQUEUE_REGISTRY_SIZE 0
#define configGENERATE_RUN_TIME_STATS 0
#define configCHECK_FOR_STACK_OVERFLOW 2
#define configUSE_RECURSIVE_MUTEXES 0
#define configUSE_MALLOC_FAILED_HOOK 1
#define configUSE_APPLICATION_TASK_TAG 0
#define configUSE_COUNTING_SEMAPHORES 0
/* Co-routine definitions. */
#define configUSE_CO_ROUTINES 0
#define configMAX_CO_ROUTINE_PRIORITIES ( 2 )
/* Software timer definitions. */
#define configUSE_TIMERS 1
#define configTIMER_TASK_PRIORITY ( 3 )
#define configTIMER_QUEUE_LENGTH 5
#define configTIMER_TASK_STACK_DEPTH ( configMINIMAL_STACK_SIZE )
/* Set the following definitions to 1 to include the API function, or zero
to exclude the API function. */
#define INCLUDE_vTaskPrioritySet 1
#define INCLUDE_uxTaskPriorityGet 1
#define INCLUDE_vTaskDelete 1
#define INCLUDE_vTaskCleanUpResources 1
#define INCLUDE_vTaskSuspend 1
#define INCLUDE_vTaskDelayUntil 1
#define INCLUDE_vTaskDelay 1
/* Use the system definition, if there is one */
#ifdef __NVIC_PRIO_BITS
#define configPRIO_BITS __NVIC_PRIO_BITS
#else
#define configPRIO_BITS 4 /* 15 priority levels */
#endif
#define configLIBRARY_LOWEST_INTERRUPT_PRIORITY 15
#define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY 5
/* The lowest priority. */
#define configKERNEL_INTERRUPT_PRIORITY ( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
/* Priority 5, or 95 as only the top four bits are implemented. */
/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
#define configMAX_SYSCALL_INTERRUPT_PRIORITY ( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
#define configASSERT( x ) if( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); for( ;; ); }
#define vPortSVCHandler SVC_Handler
#define xPortPendSVHandler PendSV_Handler
#define xPortSysTickHandler SysTick_Handler
#endif /* FREERTOS_CONFIG_H */

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Makefile Normal file
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TARGET=main.bin
EXECUTABLE=main.elf
CC=arm-none-eabi-gcc
CXX=arm-none-eabi-g++
LD=arm-none-eabi-ld
#LD=arm-none-eabi-gcc
AR=arm-none-eabi-ar
AS=arm-none-eabi-as
CP=arm-none-eabi-objcopy
OD=arm-none-eabi-objdump
BIN=$(CP) -O ihex
DEFS = -DUSE_STDPERIPH_DRIVER -DSTM32F10X_LD_VL -DHSE_VALUE=8000000
MCU = cortex-m4
MCFLAGS = -mcpu=$(MCU) -mthumb -mlittle-endian -mfpu=fpv4-sp-d16 -mfloat-abi=hard -mthumb-interwork
STM32_INCLUDES = -I STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/inc/ \
-I STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/ \
-I STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/CMSIS/CM3/CoreSupport/ \
-I FreeRTOS/include
OPTIMIZE = -Os
CFLAGS = $(MCFLAGS) $(OPTIMIZE) $(DEFS) -I./ -I./ $(STM32_INCLUDES) -Wl,-T,stm32_flash.ld -std=c99
CXXFLAGS = $(MCFLAGS) $(OPTIMIZE) $(DEFS) -IuSTL/ -I./ -I./ $(STM32_INCLUDES) -Wl,-T,stm32_flash.ld -std=c++0x -nostdinc++
AFLAGS = $(MCFLAGS)
#-mapcs-float use float regs. small increase in code size
$(TARGET): $(EXECUTABLE)
$(CP) -O binary $^ $@
OBJS = main.o \
stm32f10x_it.o system_stm32f10x.o \
startup_stm32f10x_ld_vl.o \
FreeRTOS/list.o FreeRTOS/port.o FreeRTOS/queue.o FreeRTOS/tasks.o FreeRTOS/timers.o FreeRTOS/heap_2.o \
stm32f10x_gpio.o stm32f10x_rcc.o \
misc.o
# stm32f10x_exti.o stm32f10x_usart.o stm32f10x_i2c.o stm32f10x_spi.o \
# stm32f10x_adc.o stm32f10x_dma.o stm32f10x_flash.o stm32f10x_tim.o \
# stm32f10x_dac.o stm32f10x_sdio.o stm32f10x_fsmc.o \
$(EXECUTABLE): $(OBJS)
$(CC) $(CFLAGS) $(OBJS) -o $@
flash: $(TARGET)
sudo openocd -f ~/Embedded/busblaster.cfg -f /usr/share/openocd/scripts/target/stm32f1x.cfg -c "init" -c "reset halt" -c "flash write_image erase main.bin 0x08000000" -c "reset" -c "exit" || true
#sudo openocd -f ~/Embedded/busblaster.cfg -f /usr/share/openocd/scripts/target/stm32f1x.cfg -c "init" -c "reset halt" -c "mt_flash main.elf" -c "reset" -c "exit" || true
clean:
rm -f Startup.lst $(OBJS) $(TARGET) $(TARGET).lst $(TARGET).out $(TARGET).hex $(TARGET).map \
$(TARGET).dmp $(TARGET).elf
all: $(TARGET)

3
README Normal file
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HSVending interface firmware
Please download and extract STM32F10x_StdPeriph_Lib_V3.5.0 into STM32F10x_StdPeriph_Lib_V3.5.0/. Licensing issues do not allow me to distribute this.

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/* Standard includes. */
#include <string.h>
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
/* Library includes. */
#include <stm32f10x.h>
#include <stm32f10x_gpio.h>
#include <stm32f10x_rcc.h>
#include <misc.h>
#include "stm32f10x_it.h"
/* Task priorities. */
#define mainECHO_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
/* COM port and baud rate used by the echo task. */
#define mainCOM0 ( 0 )
#define mainBAUD_RATE ( 115200 )
static void prvUSARTEchoTask( void *pvParameters );
static void prvSetupHardware(void);
/*-----------------------------------------------------------*/
int main( void )
{
prvSetupHardware();
/* Create the 'echo' task, which is also defined within this file. */
xTaskCreate( prvUSARTEchoTask, ( signed char * ) "Echo", configMINIMAL_STACK_SIZE, NULL, mainECHO_TASK_PRIORITY, NULL );
/* Start the scheduler. */
vTaskStartScheduler();
/* Will only get here if there was insufficient memory to create the idle
task. The idle task is created within vTaskStartScheduler(). */
for( ;; );
}
/*-----------------------------------------------------------*/
/* Described at the top of this file. */
void prvUSARTEchoTask( void *pvParameters )
{
for (;;)
{
GPIO_SetBits(GPIOB, GPIO_Pin_0);
vTaskDelay(1000);
GPIO_ResetBits(GPIOB, GPIO_Pin_0);
vTaskDelay(1000);
}
}
/*-----------------------------------------------------------*/
GPIO_InitTypeDef GPIO_InitStructure;
extern void SystemInit(void);
static void prvSetupHardware( void )
{
// For FreeRTOS interrupt priority
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
// Status LED GPIO (PB0)
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
/*-----------------------------------------------------------*/
void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName )
{
/* This function will get called if a task overflows its stack. If the
parameters are corrupt then inspect pxCurrentTCB to find which was the
offending task. */
( void ) pxTask;
( void ) pcTaskName;
for( ;; );
}
/*-----------------------------------------------------------*/
void assert_failed( unsigned char *pucFile, unsigned long ulLine )
{
( void ) pucFile;
( void ) ulLine;
for( ;; );
}
void vApplicationIdleHook(void)
{
}
void vApplicationMallocFailedHook( void )
{
for (;;)
{
}
}
void _exit(void)
{
for (;;)
{
}
}

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misc.c Symbolic link
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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/misc.c

1
startup_stm32f10x_ld_vl.s Symbolic link
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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/startup/TrueSTUDIO/startup_stm32f10x_ld_vl.s

1
stm32_flash.ld Symbolic link
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STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Template/TrueSTUDIO/STM32100B-EVAL/stm32_flash.ld

1
stm32f10x_adc.c Symbolic link
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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_adc.c

1
stm32f10x_bkp.c Symbolic link
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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_bkp.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_can.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_cec.c

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/**
******************************************************************************
* @file GPIOToggle/stm32f10x_it.h
* @author MCD Application Team
* @version V.0.0
* @date 09/13/2010
* @brief This file contains the headers of the interrupt handlers.
******************************************************************************
* @copy
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>&copy; COPYRIGHT 2010 STMicroelectronics</center></h2>
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F10x_IT_H
#define __STM32F10x_IT_H
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/* Exported macro ------------------------------------------------------------*/
/* Exported functions ------------------------------------------------------- */
void NMI_Handler(void);
void HardFault_Handler(void);
void MemManage_Handler(void);
void BusFault_Handler(void);
void UsageFault_Handler(void);
void SVC_Handler(void);
void DebugMon_Handler(void);
void PendSV_Handler(void);
void SysTick_Handler(void);
#define assert_param(a)
#endif /* __STM32F10x_IT_H */
/******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_crc.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_dac.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_dbgmcu.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_dma.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_exti.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_flash.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_fsmc.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_gpio.c

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stm32f10x_i2c.c Symbolic link
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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_i2c.c

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/**
******************************************************************************
* @file Examples/GPIOToggle/stm32f10x_it.c
* @author MCD Application Team
* @version V1.0.0
* @date 09/13/2010
* @brief Main Interrupt Service Routines.
* This file provides template for all exceptions handler and peripherals
* interrupt service routine.
******************************************************************************
* @copy
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>&copy; COPYRIGHT 2010 STMicroelectronics</center></h2>
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_it.h"
/** @addtogroup Examples
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/******************************************************************************/
/* Cortex-M3 Processor Exceptions Handlers */
/******************************************************************************/
/**
* @brief This function handles NMI exception.
* @param None
* @retval None
*/
void NMI_Handler(void)
{
}
/**
* @brief This function handles Hard Fault exception.
* @param None
* @retval None
*/
void HardFault_Handler(void)
{
/* Go to infinite loop when Hard Fault exception occurs */
while (1)
{
}
}
/**
* @brief This function handles Memory Manage exception.
* @param None
* @retval None
*/
void MemManage_Handler(void)
{
/* Go to infinite loop when Memory Manage exception occurs */
while (1)
{
}
}
/**
* @brief This function handles Bus Fault exception.
* @param None
* @retval None
*/
void BusFault_Handler(void)
{
/* Go to infinite loop when Bus Fault exception occurs */
while (1)
{
}
}
/**
* @brief This function handles Usage Fault exception.
* @param None
* @retval None
*/
void UsageFault_Handler(void)
{
/* Go to infinite loop when Usage Fault exception occurs */
while (1)
{
}
}
/**
* @brief This function handles Debug Monitor exception.
* @param None
* @retval None
*/
void DebugMon_Handler(void)
{
}
/******************************************************************************/
/* STM32F10x Peripherals Interrupt Handlers */
/* Add here the Interrupt Handler for the used peripheral(s) (PPP), for the */
/* available peripheral interrupt handler's name please refer to the startup */
/* file (startup_stm32f10x_xx.s). */
/******************************************************************************/
/**
* @brief This function handles PPP interrupt request.
* @param None
* @retval None
*/
/*void PPP_IRQHandler(void)
{
}*/
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file GPIOToggle/stm32f10x_it.h
* @author MCD Application Team
* @version V.0.0
* @date 09/13/2010
* @brief This file contains the headers of the interrupt handlers.
******************************************************************************
* @copy
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>&copy; COPYRIGHT 2010 STMicroelectronics</center></h2>
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F10x_IT_H
#define __STM32F10x_IT_H
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/* Exported macro ------------------------------------------------------------*/
/* Exported functions ------------------------------------------------------- */
void NMI_Handler(void);
void HardFault_Handler(void);
void MemManage_Handler(void);
void BusFault_Handler(void);
void UsageFault_Handler(void);
void SVC_Handler(void);
void DebugMon_Handler(void);
void PendSV_Handler(void);
void SysTick_Handler(void);
#endif /* __STM32F10x_IT_H */
/******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_iwdg.c

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stm32f10x_pwr.c Symbolic link
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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_pwr.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_rcc.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_rtc.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_sdio.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_spi.c

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/*****************************************************************************
* Copyright (c) 2007 Rowley Associates Limited. *
* *
* This file may be distributed under the terms of the License Agreement *
* provided with this software. *
* *
* THIS FILE IS PROVIDED AS IS WITH NO WARRANTY OF ANY KIND, INCLUDING THE *
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. *
*****************************************************************************/
/*****************************************************************************
* Preprocessor Definitions
* ------------------------
*
* STARTUP_FROM_RESET
*
* If defined, the program will startup from power-on/reset. If not defined
* the program will just loop endlessly from power-on/reset.
*
* This definition is not defined by default on this target because the
* debugger is unable to reset this target and maintain control of it over the
* JTAG interface. The advantage of doing this is that it allows the debugger
* to reset the CPU and run programs from a known reset CPU state on each run.
* It also acts as a safety net if you accidently download a program in FLASH
* that crashes and prevents the debugger from taking control over JTAG
* rendering the target unusable over JTAG. The obvious disadvantage of doing
* this is that your application will not startup without the debugger.
*
* We advise that on this target you keep STARTUP_FROM_RESET undefined whilst
* you are developing and only define STARTUP_FROM_RESET when development is
* complete.
*
*****************************************************************************/
.global reset_handler
.section .vectors, "ax"
.code 16
.align 0
.global _vectors
.macro DEFAULT_ISR_HANDLER name=
.thumb_func
.weak \name
\name:
1: b 1b /* endless loop */
.endm
.extern xPortPendSVHandler
.extern xPortSysTickHandler
.extern vPortSVCHandler
.extern vMAC_ISR;
_vectors:
.word __stack_end__
#ifdef STARTUP_FROM_RESET
.word reset_handler
#else
.word reset_wait
#endif /* STARTUP_FROM_RESET */
.word NMIException
.word HardFaultException
.word MemManageException
.word BusFaultException
.word UsageFaultException
.word 0 // Reserved
.word 0 // Reserved
.word 0 // Reserved
.word 0 // Reserved
.word vPortSVCHandler
.word DebugMonitor
.word 0 // Reserved
.word xPortPendSVHandler
.word xPortSysTickHandler
.word WWDG_IRQHandler
.word PVD_IRQHandler
.word TAMPER_IRQHandler
.word RTC_IRQHandler
.word FLASH_IRQHandler
.word RCC_IRQHandler
.word EXTI0_IRQHandler
.word EXTI1_IRQHandler
.word EXTI2_IRQHandler
.word EXTI3_IRQHandler
.word EXTI4_IRQHandler
.word DMAChannel1_IRQHandler
.word DMAChannel2_IRQHandler
.word DMAChannel3_IRQHandler
.word DMAChannel4_IRQHandler
.word DMAChannel5_IRQHandler
.word DMAChannel6_IRQHandler
.word DMAChannel7_IRQHandler
.word ADC_IRQHandler
.word USB_HP_CAN_TX_IRQHandler
.word USB_LP_CAN_RX0_IRQHandler
.word CAN_RX1_IRQHandler
.word CAN_SCE_IRQHandler
.word EXTI9_5_IRQHandler
.word TIM1_BRK_IRQHandler
.word TIM1_UP_IRQHandler
.word TIM1_TRG_COM_IRQHandler
.word TIM1_CC_IRQHandler
.word TIM2_IRQHandler
.word TIM3_IRQHandler
.word TIM4_IRQHandler
.word I2C1_EV_IRQHandler
.word I2C1_ER_IRQHandler
.word I2C2_EV_IRQHandler
.word I2C2_ER_IRQHandler
.word SPI1_IRQHandler
.word SPI2_IRQHandler
.word USART1_IRQHandler
.word USART2_IRQHandler
.word USART3_IRQHandler
.word EXTI15_10_IRQHandler
.word RTCAlarm_IRQHandler
.word USBWakeUp_IRQHandler
.word TIM8_BRK_IRQHandler
.word TIM8_UP_IRQHandler
.word TIM8_TRG_COM_IRQHandler
.word TIM8_CC_IRQHandler
.word ADC3_IRQHandler
.word FSMC_IRQHandler
.word SDIO_IRQHandler
.word TIM5_IRQHandler
.word SPI3_IRQHandler
.word UART4_IRQHandler
.word UART5_IRQHandler
.word TIM6_IRQHandler
.word TIM7_IRQHandler
.word DMA2_Channel1_IRQHandler
.word DMA2_Channel2_IRQHandler
.word DMA2_Channel3_IRQHandler
.word DMA2_Channel4_5_IRQHandler
.word vMAC_ISR
.word vMAC_ISR
.section .init, "ax"
.thumb_func
reset_handler:
#ifndef __FLASH_BUILD
/* If this is a RAM build, configure vector table offset register to point
to the RAM vector table. */
ldr r0, =0xE000ED08
ldr r1, =_vectors
str r1, [r0]
#endif
b _start
DEFAULT_ISR_HANDLER HardFaultException
DEFAULT_ISR_HANDLER NMIException
DEFAULT_ISR_HANDLER MemManageException
DEFAULT_ISR_HANDLER BusFaultException
DEFAULT_ISR_HANDLER UsageFaultException
DEFAULT_ISR_HANDLER SVCHandler
DEFAULT_ISR_HANDLER DebugMonitor
DEFAULT_ISR_HANDLER PendSV
DEFAULT_ISR_HANDLER SysTickHandler
DEFAULT_ISR_HANDLER WWDG_IRQHandler
DEFAULT_ISR_HANDLER PVD_IRQHandler
DEFAULT_ISR_HANDLER TAMPER_IRQHandler
DEFAULT_ISR_HANDLER RTC_IRQHandler
DEFAULT_ISR_HANDLER FLASH_IRQHandler
DEFAULT_ISR_HANDLER RCC_IRQHandler
DEFAULT_ISR_HANDLER EXTI0_IRQHandler
DEFAULT_ISR_HANDLER EXTI1_IRQHandler
DEFAULT_ISR_HANDLER EXTI2_IRQHandler
DEFAULT_ISR_HANDLER EXTI3_IRQHandler
DEFAULT_ISR_HANDLER EXTI4_IRQHandler
DEFAULT_ISR_HANDLER DMAChannel1_IRQHandler
DEFAULT_ISR_HANDLER DMAChannel2_IRQHandler
DEFAULT_ISR_HANDLER DMAChannel3_IRQHandler
DEFAULT_ISR_HANDLER DMAChannel4_IRQHandler
DEFAULT_ISR_HANDLER DMAChannel5_IRQHandler
DEFAULT_ISR_HANDLER DMAChannel6_IRQHandler
DEFAULT_ISR_HANDLER DMAChannel7_IRQHandler
DEFAULT_ISR_HANDLER ADC_IRQHandler
DEFAULT_ISR_HANDLER USB_HP_CAN_TX_IRQHandler
DEFAULT_ISR_HANDLER USB_LP_CAN_RX0_IRQHandler
DEFAULT_ISR_HANDLER CAN_RX1_IRQHandler
DEFAULT_ISR_HANDLER CAN_SCE_IRQHandler
DEFAULT_ISR_HANDLER EXTI9_5_IRQHandler
DEFAULT_ISR_HANDLER TIM1_BRK_IRQHandler
DEFAULT_ISR_HANDLER TIM1_UP_IRQHandler
DEFAULT_ISR_HANDLER TIM1_TRG_COM_IRQHandler
DEFAULT_ISR_HANDLER TIM1_CC_IRQHandler
DEFAULT_ISR_HANDLER TIM2_IRQHandler
DEFAULT_ISR_HANDLER TIM3_IRQHandler
DEFAULT_ISR_HANDLER TIM4_IRQHandler
DEFAULT_ISR_HANDLER I2C1_EV_IRQHandler
DEFAULT_ISR_HANDLER I2C1_ER_IRQHandler
DEFAULT_ISR_HANDLER I2C2_EV_IRQHandler
DEFAULT_ISR_HANDLER I2C2_ER_IRQHandler
DEFAULT_ISR_HANDLER SPI1_IRQHandler
DEFAULT_ISR_HANDLER SPI2_IRQHandler
DEFAULT_ISR_HANDLER USART1_IRQHandler
DEFAULT_ISR_HANDLER USART2_IRQHandler
DEFAULT_ISR_HANDLER USART3_IRQHandler
DEFAULT_ISR_HANDLER EXTI15_10_IRQHandler
DEFAULT_ISR_HANDLER RTCAlarm_IRQHandler
DEFAULT_ISR_HANDLER USBWakeUp_IRQHandler
DEFAULT_ISR_HANDLER TIM8_BRK_IRQHandler
DEFAULT_ISR_HANDLER TIM8_UP_IRQHandler
DEFAULT_ISR_HANDLER TIM8_TRG_COM_IRQHandler
DEFAULT_ISR_HANDLER TIM8_CC_IRQHandler
DEFAULT_ISR_HANDLER ADC3_IRQHandler
DEFAULT_ISR_HANDLER FSMC_IRQHandler
DEFAULT_ISR_HANDLER SDIO_IRQHandler
DEFAULT_ISR_HANDLER TIM5_IRQHandler
DEFAULT_ISR_HANDLER SPI3_IRQHandler
DEFAULT_ISR_HANDLER UART4_IRQHandler
DEFAULT_ISR_HANDLER UART5_IRQHandler
DEFAULT_ISR_HANDLER TIM6_IRQHandler
DEFAULT_ISR_HANDLER TIM7_IRQHandler
DEFAULT_ISR_HANDLER DMA2_Channel1_IRQHandler
DEFAULT_ISR_HANDLER DMA2_Channel2_IRQHandler
DEFAULT_ISR_HANDLER DMA2_Channel3_IRQHandler
DEFAULT_ISR_HANDLER DMA2_Channel4_5_IRQHandler
#ifndef STARTUP_FROM_RESET
DEFAULT_ISR_HANDLER reset_wait
#endif /* STARTUP_FROM_RESET */
// STM32 library requires these
.global __WFI
.global __WFE
.global __SEV
.global __ISB
.global __DSB
.global __DMB
.global __SVC
.global __MRS_CONTROL
.global __MSR_CONTROL
.global __MRS_PSP
.global __MSR_PSP
.global __MRS_MSP
.global __MSR_MSP
.global __SETPRIMASK
.global __RESETPRIMASK
.global __SETFAULTMASK
.global __RESETFAULTMASK
.global __BASEPRICONFIG
.global __GetBASEPRI
.global __REV_HalfWord
.global __REV_Word
.thumb_func
__WFI:
wfi
bx r14
.thumb_func
__WFE:
wfe
bx r14
.thumb_func
__SEV:
sev
bx r14
.thumb_func
__ISB:
isb
bx r14
.thumb_func
__DSB:
dsb
bx r14
.thumb_func
__DMB:
dmb
bx r14
.thumb_func
__SVC:
svc 0x01
bx r14
.thumb_func
__MRS_CONTROL:
mrs r0, control
bx r14
.thumb_func
__MSR_CONTROL:
msr control, r0
isb
bx r14
.thumb_func
__MRS_PSP:
mrs r0, psp
bx r14
.thumb_func
__MSR_PSP:
msr psp, r0
bx r14
.thumb_func
__MRS_MSP:
mrs r0, msp
bx r14
.thumb_func
__MSR_MSP:
msr msp, r0
bx r14
.thumb_func
__SETPRIMASK:
cpsid i
bx r14
.thumb_func
__RESETPRIMASK:
cpsie i
bx r14
.thumb_func
__SETFAULTMASK:
cpsid f
bx r14
.thumb_func
__RESETFAULTMASK:
cpsie f
bx r14
.thumb_func
__BASEPRICONFIG:
msr basepri, r0
bx r14
.thumb_func
__GetBASEPRI:
mrs r0, basepri_max
bx r14
.thumb_func
__REV_HalfWord:
rev16 r0, r0
bx r14
.thumb_func
__REV_Word:
rev r0, r0
bx r14

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_tim.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_usart.c

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STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_wwdg.c

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