/****************************************************************************** * 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); }
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); }
/* * MFRC522Auth -> auth * Verificar la contraseña de la tarjeta * Los parámetros de entrada: AuthMode - Modo de autenticación de contraseña 0x60 = A 0x60 = validación KeyA 0x61 = B 0x61 = validación KeyB BlockAddr-- bloque de direcciones Sectorkey-- sector contraseña serNum--,4? Tarjeta de número de serie, 4 bytes * MI_OK Valor de retorno: el retorno exitoso MI_OK */ uint8_t RFID::auth(uint8_t authMode, uint8_t BlockAddr, uint8_t *Sectorkey, uint8_t *serNum) { uint8_t status; uint16_t recvBits; uint8_t i; uint8_t buff[12]; //????+???+????+???? Verifique la dirección de comandos de bloques del sector + + contraseña + número de la tarjeta de serie buff[0] = authMode; buff[1] = BlockAddr; for (i=0; i<6; i++) { buff[i+2] = *(Sectorkey+i); } for (i=0; i<4; i++) { buff[i+8] = *(serNum+i); } status = MFRC522ToCard(PCD_AUTHENT, buff, 12, buff, &recvBits); if ((status != MI_OK) || (!(readMFRC522(Status2Reg) & 0x08))) { status = MI_ERR; } return status; }
/* * MFRC522Auth -> auth * Verificar la contraseña de la tarjeta * Los parámetros de entrada: AuthMode - Modo de autenticación de contraseña 0x60 = A 0x60 = validación KeyA 0x61 = B 0x61 = validación KeyB BlockAddr-- bloque de direcciones Sectorkey-- sector contraseña serNum--,4? Tarjeta de número de serie, 4 bytes * MI_OK Valor de retorno: el retorno exitoso MI_OK */ unsigned char RFID::auth(unsigned char authMode, unsigned char BlockAddr, unsigned char *Sectorkey, unsigned char *serNum) { unsigned char status; unsigned int recvBits; unsigned char i; unsigned char buff[12]; //????+???+????+???? Verifique la dirección de comandos de bloques del sector + + contraseña + número de la tarjeta de serie buff[0] = authMode; buff[1] = BlockAddr; for (i=0; i<6; i++) { buff[i+2] = *(Sectorkey+i); } for (i=0; i<4; i++) { buff[i+8] = *(serNum+i); } status = MFRC522ToCard(PCD_AUTHENT, buff, 12, buff, &recvBits); if ((status != MI_OK) || (!(readMFRC522(Status2Reg) & 0x08))) { status = MI_ERR; } return status; }
void RFID::antennaOn(void) { uint8_t temp; temp = readMFRC522(TxControlReg); if (!(temp & 0x03)) { setBitMask(TxControlReg, 0x03); } }
/****************************************************************************** * 函 数 名:antennaOff * 功能描述:关闭天线,每次启动或关闭天险发射之间应至少有1ms的间隔 * 输入参数:无 * 返 回 值:无 ******************************************************************************/ void RFID::antennaOff(void) { unsigned char temp; temp = readMFRC522(TxControlReg); if (!(temp & 0x03)) { clearBitMask(TxControlReg, 0x03); } }
/****************************************************************************** * 函 数 名:auth * 功能描述:验证卡片密码 * 输入参数:authMode--密码验证模式 * 0x60 = 验证A密钥 * 0x61 = 验证B密钥 * BlockAddr--块地址 * Sectorkey--扇区密码 * serNum--卡片序列号,4字节 * 返 回 值:成功返回MI_OK ******************************************************************************/ unsigned char RFID::auth(unsigned char authMode, unsigned char BlockAddr, unsigned char *Sectorkey, unsigned char *serNum) { unsigned char status; unsigned int recvBits; unsigned char i; unsigned char buff[12]; //验证指令+块地址+扇区密码+卡序列号 buff[0] = authMode; buff[1] = BlockAddr; for (i=0; i<6; i++) buff[i+2] = *(Sectorkey+i); for (i=0; i<4; i++) buff[i+8] = *(serNum+i); status = MFRC522ToCard(PCD_AUTHENT, buff, 12, buff, &recvBits); if ((status != MI_OK) || (!(readMFRC522(Status2Reg) & 0x08))) status = MI_ERR; return status; }
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; }
void RFID::clearBitMask(uint8_t reg, uint8_t mask) { uint8_t tmp; tmp = readMFRC522(reg); writeMFRC522(reg, tmp & (~mask)); // clear bit mask }
void RFID::setBitMask(uint8_t reg, uint8_t mask) { uint8_t tmp; tmp = readMFRC522(reg); writeMFRC522(reg, tmp | mask); // set bit mask }
void RFID::clearBitMask(unsigned char reg, unsigned char mask) { unsigned char tmp; tmp = readMFRC522(reg); writeMFRC522(reg, tmp & (~mask)); // clear bit mask }
void RFID::setBitMask(unsigned char reg, unsigned char mask) { unsigned char tmp; tmp = readMFRC522(reg); writeMFRC522(reg, tmp | mask); // set bit mask }
/****************************************************************************** * 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; }