コード例 #1
0
ファイル: RFID.cpp プロジェクト: SproutOrc/Arduino
/******************************************************************************
 * 函 数 名:calculateCRC
 * 功能描述:用MF522计算CRC
 * 输入参数:pIndata--要读数CRC的数据,len--数据长度,pOutData--计算的CRC结果
 * 返 回 值:无
 ******************************************************************************/
void RFID::calculateCRC(unsigned char *pIndata, unsigned char len, unsigned char *pOutData)
{
    unsigned char i, n;

    clearBitMask(DivIrqReg, 0x04);      //CRCIrq = 0
    setBitMask(FIFOLevelReg, 0x80);     //清FIFO指针
    //Write_MFRC522(CommandReg, PCD_IDLE);

    //向FIFO中写入数据
    for (i=0; i<len; i++)
        writeMFRC522(FIFODataReg, *(pIndata+i));
    writeMFRC522(CommandReg, PCD_CALCCRC);

    //等待CRC计算完成
    i = 0xFF;
    do
    {
        n = readMFRC522(DivIrqReg);
        i--;
    }
    while ((i!=0) && !(n&0x04));      //CRCIrq = 1

    //读取CRC计算结果
    pOutData[0] = readMFRC522(CRCResultRegL);
    pOutData[1] = readMFRC522(CRCResultRegM);
}
コード例 #2
0
ファイル: RFID.cpp プロジェクト: pkourany/RC522_RFID
void RFID::calculateCRC(uint8_t *pIndata, uint8_t len, uint8_t *pOutData)
{
    uint8_t i, n;

    clearBitMask(DivIrqReg, 0x04);			//CRCIrq = 0
    setBitMask(FIFOLevelReg, 0x80);			//Claro puntero FIFO
    //Write_MFRC522(CommandReg, PCD_IDLE);

	//Escribir datos en el FIFO	
    for (i=0; i<len; i++)
    {   
		writeMFRC522(FIFODataReg, *(pIndata+i));   
	}
    writeMFRC522(CommandReg, PCD_CALCCRC);

	// Esperar a la finalización de cálculo del CRC
    i = 0xFF;
    do 
    {
        n = readMFRC522(DivIrqReg);
        i--;
    }
    while ((i!=0) && !(n&0x04));			//CRCIrq = 1

	//Lea el cálculo de CRC
    pOutData[0] = readMFRC522(CRCResultRegL);
    pOutData[1] = readMFRC522(CRCResultRegM);
}
コード例 #3
0
ファイル: RFID.cpp プロジェクト: pkourany/RC522_RFID
void RFID::antennaOn(void)
{
	uint8_t temp;

	temp = readMFRC522(TxControlReg);
	if (!(temp & 0x03))
	{
		setBitMask(TxControlReg, 0x03);
	}
}
コード例 #4
0
ファイル: MFRC522.cpp プロジェクト: ljos/MFRC522
void MFRC522::begin() {
  digitalWrite(_sad, HIGH);

  reset();

  //Timer: TPrescaler*TreloadVal/6.78MHz = 24ms
  writeToRegister(TModeReg, 0x8D);       // Tauto=1; f(Timer) = 6.78MHz/TPreScaler
  writeToRegister(TPrescalerReg, 0x3E);  // TModeReg[3..0] + TPrescalerReg
  writeToRegister(TReloadRegL, 30);
  writeToRegister(TReloadRegH, 0);

  writeToRegister(TxAutoReg, 0x40);      // 100%ASK
  writeToRegister(ModeReg, 0x3D);        // CRC initial value 0x6363

  setBitMask(TxControlReg, 0x03);        // Turn antenna on.
}
コード例 #5
0
ファイル: MFRC522.cpp プロジェクト: ljos/MFRC522
void MFRC522::calculateCRC(byte *data, int len, byte *result) {
  int i;
  byte n;

  clearBitMask(DivIrqReg, 0x04);   // CRCIrq = 0
  setBitMask(FIFOLevelReg, 0x80);  // Clear the FIFO pointer

  //Writing data to the FIFO.
  for (i = 0; i < len; i++) {
    writeToRegister(FIFODataReg, data[i]);
  }
  writeToRegister(CommandReg, MFRC522_CALCCRC);

  // Wait for the CRC calculation to complete.
  i = 0xFF;
  do {
    n = readFromRegister(DivIrqReg);
    i--;
  } while ((i != 0) && !(n & 0x04));  //CRCIrq = 1

  // Read the result from the CRC calculation.
  result[0] = readFromRegister(CRCResultRegL);
  result[1] = readFromRegister(CRCResultRegM);
}
コード例 #6
0
ファイル: RFID.cpp プロジェクト: pkourany/RC522_RFID
uint8_t RFID::MFRC522ToCard(uint8_t command, uint8_t *sendData, uint8_t sendLen, uint8_t *backData, uint16_t *backLen)
{
    uint8_t status = MI_ERR;
    uint8_t irqEn = 0x00;
    uint8_t waitIRq = 0x00;
	uint8_t lastBits;
    uint8_t n;
    uint16_t i;

    switch (command)
    {
        case PCD_AUTHENT:		// Tarjetas de certificación cerca
		{
			irqEn = 0x12;
			waitIRq = 0x10;
			break;
		}
		case PCD_TRANSCEIVE:	//La transmisión de datos FIFO
		{
			irqEn = 0x77;
			waitIRq = 0x30;
			break;
		}
		default:
			break;
    }

    writeMFRC522(CommIEnReg, irqEn|0x80);	//De solicitud de interrupción
    clearBitMask(CommIrqReg, 0x80);			// Borrar todos los bits de petición de interrupción
    setBitMask(FIFOLevelReg, 0x80);			//FlushBuffer=1, FIFO de inicialización

	writeMFRC522(CommandReg, PCD_IDLE);	//NO action;Y cancelar el comando

	//Escribir datos en el FIFO
    for (i=0; i<sendLen; i++)
    {   
		writeMFRC522(FIFODataReg, sendData[i]);    
	}

	//???? ejecutar el comando
	writeMFRC522(CommandReg, command);
    if (command == PCD_TRANSCEIVE)
    {    
		setBitMask(BitFramingReg, 0x80);		//StartSend=1,transmission of data starts  
	}   

	// A la espera de recibir datos para completar
	i = 2000;	//i????????,??M1???????25ms	??? i De acuerdo con el ajuste de frecuencia de reloj, el tiempo máximo de espera operación M1 25ms tarjeta??
    do 
    {
		//CommIrqReg[7..0]
		//Set1 TxIRq RxIRq IdleIRq HiAlerIRq LoAlertIRq ErrIRq TimerIRq
        n = readMFRC522(CommIrqReg);
        i--;
    }
    while ((i!=0) && !(n&0x01) && !(n&waitIRq));

    clearBitMask(BitFramingReg, 0x80);			//StartSend=0

    if (i != 0)
    {    
        if(!(readMFRC522(ErrorReg) & 0x1B))	//BufferOvfl Collerr CRCErr ProtecolErr
        {
            status = MI_OK;
            if (n & irqEn & 0x01)
            {   
				status = MI_NOTAGERR;			//??   
			}

            if (command == PCD_TRANSCEIVE)
            {
               	n = readMFRC522(FIFOLevelReg);
              	lastBits = readMFRC522(ControlReg) & 0x07;
                if (lastBits)
                {   
					*backLen = (n-1)*8 + lastBits;   
				}
                else
                {   
					*backLen = n*8;   
				}

                if (n == 0)
                {   
					n = 1;    
				}
                if (n > MAX_LEN)
                {   
					n = MAX_LEN;   
				}

				//??FIFO??????? Lea los datos recibidos en el FIFO
                for (i=0; i<n; i++)
                {   
					backData[i] = readMFRC522(FIFODataReg);    
				}
            }
        }
        else
        {   
			status = MI_ERR;  
		}

    }

    //SetBitMask(ControlReg,0x80);           //timer stops
    //Write_MFRC522(CommandReg, PCD_IDLE); 

    return status;
}
コード例 #7
0
ファイル: MFRC522.cpp プロジェクト: ljos/MFRC522
int MFRC522::commandTag(byte cmd, byte *data, int dlen, byte *result, int *rlen) {
  int status = MI_ERR;
  byte irqEn = 0x00;
  byte waitIRq = 0x00;
  byte lastBits, n;
  int i;

  switch (cmd) {
  case MFRC522_AUTHENT:
    irqEn = 0x12;
    waitIRq = 0x10;
    break;
  case MFRC522_TRANSCEIVE:
    irqEn = 0x77;
    waitIRq = 0x30;
    break;
  default:
    break;
  }

  writeToRegister(CommIEnReg, irqEn|0x80);    // interrupt request
  clearBitMask(CommIrqReg, 0x80);             // Clear all interrupt requests bits.
  setBitMask(FIFOLevelReg, 0x80);             // FlushBuffer=1, FIFO initialization.

  writeToRegister(CommandReg, MFRC522_IDLE);  // No action, cancel the current command.

  // Write to FIFO
  for (i=0; i < dlen; i++) {
    writeToRegister(FIFODataReg, data[i]);
  }

  // Execute the command.
  writeToRegister(CommandReg, cmd);
  if (cmd == MFRC522_TRANSCEIVE) {
    setBitMask(BitFramingReg, 0x80);  // StartSend=1, transmission of data starts
  }

  // Waiting for the command to complete so we can receive data.
  i = 25; // Max wait time is 25ms.
  do {
    delay(1);
    // CommIRqReg[7..0]
    // Set1 TxIRq RxIRq IdleIRq HiAlerIRq LoAlertIRq ErrIRq TimerIRq
    n = readFromRegister(CommIrqReg);
    i--;
  } while ((i!=0) && !(n&0x01) && !(n&waitIRq));

  clearBitMask(BitFramingReg, 0x80);  // StartSend=0

  if (i != 0) { // Request did not time out.
    if(!(readFromRegister(ErrorReg) & 0x1D)) {  // BufferOvfl Collerr CRCErr ProtocolErr
      status = MI_OK;
      if (n & irqEn & 0x01) {
        status = MI_NOTAGERR;
      }

      if (cmd == MFRC522_TRANSCEIVE) {
        n = readFromRegister(FIFOLevelReg);
        lastBits = readFromRegister(ControlReg) & 0x07;
        if (lastBits) {
          *rlen = (n-1)*8 + lastBits;
        } else {
          *rlen = n*8;
        }

        if (n == 0) {
          n = 1;
        }

        if (n > MAX_LEN) {
          n = MAX_LEN;
        }

        // Reading the recieved data from FIFO.
        for (i=0; i<n; i++) {
          result[i] = readFromRegister(FIFODataReg);
        }
      }
    } else {
      status = MI_ERR;
    }
  }
  return status;
}
コード例 #8
0
ファイル: RFID.cpp プロジェクト: SproutOrc/Arduino
/******************************************************************************
 * 函 数 名:MFRC522ToCard
 * 功能描述:RC522和ISO14443卡通讯
 * 输入参数:command--MF522命令字,
 *           sendData--通过RC522发送到卡片的数据,
 *                     sendLen--发送的数据长度
 *                     backData--接收到的卡片返回数据,
 *                     backLen--返回数据的位长度
 * 返 回 值:成功返回MI_OK
 ******************************************************************************/
unsigned char RFID::MFRC522ToCard(unsigned char command, unsigned char *sendData, 
    unsigned char sendLen, unsigned char *backData, unsigned int *backLen)
{
    unsigned char status = MI_ERR;
    unsigned char irqEn = 0x00;
    unsigned char waitIRq = 0x00;
    unsigned char lastBits;
    unsigned char n;
    unsigned int i;

    switch (command)
    {
        case PCD_AUTHENT:   //认证卡密
        {
            irqEn = 0x12;
            waitIRq = 0x10;
            break;
        }
        case PCD_TRANSCEIVE:  //发送FIFO中数据
        {
            irqEn = 0x77;
            waitIRq = 0x30;
            break;
        }
        default:
            break;
    }

    writeMFRC522(CommIEnReg, irqEn|0x80); //允许中断请求
    clearBitMask(CommIrqReg, 0x80);       //清除所有中断请求位
    setBitMask(FIFOLevelReg, 0x80);       //FlushBuffer=1, FIFO初始化

    writeMFRC522(CommandReg, PCD_IDLE);   //无动作,取消当前命令

    //向FIFO中写入数据
    for (i=0; i<sendLen; i++)
        writeMFRC522(FIFODataReg, sendData[i]);

    //执行命令
    writeMFRC522(CommandReg, command);
    if (command == PCD_TRANSCEIVE)
        setBitMask(BitFramingReg, 0x80);    //StartSend=1,transmission of data starts

    //等待接收数据完成
    i = 2000; //i根据时钟频率调整,操作M1卡最大等待时间25ms
    do
    {
        //CommIrqReg[7..0]
        //Set1 TxIRq RxIRq IdleIRq HiAlerIRq LoAlertIRq ErrIRq TimerIRq
        n = readMFRC522(CommIrqReg);
        i--;
    }
    while ((i!=0) && !(n&0x01) && !(n&waitIRq));

    clearBitMask(BitFramingReg, 0x80);      //StartSend=0

    if (i != 0)
    {
        if(!(readMFRC522(ErrorReg) & 0x1B)) //BufferOvfl Collerr CRCErr ProtecolErr
        {
            status = MI_OK;
            if (n & irqEn & 0x01)
                status = MI_NOTAGERR;     //??

            if (command == PCD_TRANSCEIVE)
            {
                n = readMFRC522(FIFOLevelReg);
                lastBits = readMFRC522(ControlReg) & 0x07;
                if (lastBits)
                    *backLen = (n-1)*8 + lastBits;
                else
                    *backLen = n*8;

                if (n == 0)
                    n = 1;
                if (n > MAX_LEN)
                    n = MAX_LEN;

                //读取FIFO中接收到的数据
                for (i=0; i<n; i++)
                    backData[i] = readMFRC522(FIFODataReg);
            }
        }
        else
            status = MI_ERR;
    }

    //SetBitMask(ControlReg,0x80);           //timer stops
    //Write_MFRC522(CommandReg, PCD_IDLE);

    return status;
}