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Added pin compare.

serial
Mateusz Maciaś 2011-11-09 17:34:42 +01:00
parent d94957a8cb
commit 2221cf504f
1 changed files with 47 additions and 9 deletions
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56
arduino/arduino.pde
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@ -60,16 +60,26 @@ void setup() {
/** Main loop. */
void loop(){
//Communication with mifare reader.
rf_comm();
unsigned long rfid;
unsigned int id;
if (rf_comm(&rfid,&id)){
unsigned int pin;
//User rfid is authorized, read pin here!
if (emem_check_pin(id,pin)) {
//Open door
} else {
//Wrong pin
}
}
//Communication with PC (optional).
pc_comm();
}
/**
* Function reads record with given id from EEPROM.
* @param adr Address of record to read.
* @param data Pointer to space for data.
* @param id Pointer to space for id.
* @param adr Address of record to read, or NULL.
* @param data Pointer to space for data, or NULL.
* @param id Pointer to space for id, or NULL.
* @return Function returns true when data was red, false otherwise.
*/
boolean emem_get_record(unsigned int adr,unsigned long * data,unsigned int * id,unsigned int * pin){
@ -81,9 +91,15 @@ boolean emem_get_record(unsigned int adr,unsigned long * data,unsigned int * id,
for (int ii=0;ii<EMEM_RECORD_SIZE;ii++){
rec[ii] = EEPROM.read(adr*EMEM_RECORD_SIZE+ii);
}
(*id)=rec[0];
(*data)=(long(rec[1])<<24)|(long(rec[2])<<16)|(long(rec[3])<<8)|(long(rec[4]));
(*pin)=(rec[5]<<8)|(rec[6]);
if (id != NULL){
(*id)=rec[0];
}
if (data != NULL){
(*data)=(long(rec[1])<<24)|(long(rec[2])<<16)|(long(rec[3])<<8)|(long(rec[4]));
}
if (pin != NULL){
(*pin)=(rec[5]<<8)|(rec[6]);
}
return true;
}
@ -103,6 +119,18 @@ boolean emem_del_record(unsigned int adr){
return true;
}
/**
* Checks if pin is correct.
* @param if User id.
* @param pin Pin code.
* @return True if pin is correct, false otherwise.
*/
boolean emem_check_pin(unsigned int id, unsigned int pin){
unsigned int epin;
emem_get_record(id,NULL,NULL,&pin);
return (epin==pin);
}
/**
* Finds record with given ID.
* @param id Record id.
@ -426,10 +454,13 @@ boolean pc_parse(){
/**
* Handles communication with rfid reader.
* @return Returns true when authorized user rfid was red, false otherwise.
*/
void rf_comm() {
boolean rf_comm(unsigned long * p_rfid,unsigned int * p_id) {
static unsigned long last_millis = 0;
static unsigned long new_millis = 0;
(*p_id) = EMEM_INV_ADR;
(*p_rfid) = 0;
new_millis = millis();
if (new_millis<last_millis){
last_millis=new_millis;
@ -446,10 +477,17 @@ void rf_comm() {
if (pc_send_flag){
pc_send_flag=false;
pc_print('S',data,id);
}
if (id!=EMEM_INV_ADR){
//User is authorized
(*p_id) = id;
(*p_rfid) = data;
return true;
}
}
}
return false;
}
/**