104 lines
4.4 KiB
C
104 lines
4.4 KiB
C
/**
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******************************************************************************
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* @file usb_sil.c
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* @author MCD Application Team
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* @version V4.0.0
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* @date 28-August-2012
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* @brief Simplified Interface Layer for Global Initialization and Endpoint
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* Rea/Write operations.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT 2012 STMicroelectronics</center></h2>
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*
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* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/software_license_agreement_liberty_v2
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "usb_lib.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Extern variables ----------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/*******************************************************************************
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* Function Name : USB_SIL_Init
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* Description : Initialize the USB Device IP and the Endpoint 0.
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* Input : None.
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* Output : None.
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* Return : Status.
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*******************************************************************************/
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uint32_t USB_SIL_Init(void)
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{
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/* USB interrupts initialization */
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/* clear pending interrupts */
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_SetISTR(0);
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wInterrupt_Mask = IMR_MSK;
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/* set interrupts mask */
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_SetCNTR(wInterrupt_Mask);
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return 0;
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}
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/*******************************************************************************
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* Function Name : USB_SIL_Write
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* Description : Write a buffer of data to a selected endpoint.
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* Input : - bEpAddr: The address of the non control endpoint.
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* - pBufferPointer: The pointer to the buffer of data to be written
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* to the endpoint.
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* - wBufferSize: Number of data to be written (in bytes).
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* Output : None.
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* Return : Status.
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*******************************************************************************/
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uint32_t USB_SIL_Write(uint8_t bEpAddr, uint8_t* pBufferPointer, uint32_t wBufferSize)
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{
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/* Use the memory interface function to write to the selected endpoint */
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UserToPMABufferCopy(pBufferPointer, GetEPTxAddr(bEpAddr & 0x7F), wBufferSize);
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/* Update the data length in the control register */
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SetEPTxCount((bEpAddr & 0x7F), wBufferSize);
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return 0;
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}
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/*******************************************************************************
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* Function Name : USB_SIL_Read
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* Description : Write a buffer of data to a selected endpoint.
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* Input : - bEpAddr: The address of the non control endpoint.
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* - pBufferPointer: The pointer to which will be saved the
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* received data buffer.
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* Output : None.
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* Return : Number of received data (in Bytes).
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*******************************************************************************/
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uint32_t USB_SIL_Read(uint8_t bEpAddr, uint8_t* pBufferPointer)
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{
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uint32_t DataLength = 0;
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/* Get the number of received data on the selected Endpoint */
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DataLength = GetEPRxCount(bEpAddr & 0x7F);
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/* Use the memory interface function to write to the selected endpoint */
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PMAToUserBufferCopy(pBufferPointer, GetEPRxAddr(bEpAddr & 0x7F), DataLength);
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/* Return the number of received data */
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return DataLength;
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}
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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