RC522读写器控制代码

#include "include.h" void ClearBitMask(unsigned char data reg,unsigned char data mask); void WriteRawRC(unsigned char data Address, unsigned char data value); void SetBitMask(unsigned char data reg,unsigned char data mask); char PcdComMF522(unsigned char data Command, unsigned char *pInData, unsigned char data InLenByte, unsigned char *pOutData, unsigned int *pOutLenBit); void CalulateCRC(unsigned char *pIndata,unsigned char data len,unsigned char *pOutData); unsigned char ReadRawRC(unsigned char data Address); void PcdAntennaOn(void); void delay_ns(unsigned int data ns) { unsigned int data i; for(i=0;i<ns;i++) { nop(); nop(); nop(); } } //------------------------------------------ // 读慈胍桓鯾yte //------------------------------------------ unsigned char SPIReadByte(void) { unsigned char data SPICount; // Counter used to clock out the data unsigned char data SPIData; SPIData = 0; for (SPICount = 0; SPICount < 8; SPICount++) // Prepare to clock in the data to be read { SPIData <<=1; // Rotate the data CLR_SPI_CK; nop();nop(); // Raise the clock to clock the data out of the MAX7456 if(STU_SPI_MISO) { SPIData|=0x01; } SET_SPI_CK; nop();nop(); // Drop the clock ready for the next bit } // and loop back return (SPIData); // Finally return the read data } //------------------------------------------ // 列慈胍桓鯾yte //------------------------------------------ void SPIWriteByte(unsigned char data SPIData) { unsigned char data SPICount; // Counter used to clock out the data for (SPICount = 0; SPICount < 8; SPICount++) { if (SPIData & 0x80) { SET_SPI_MOSI; } else { CLR_SPI_MOSI; } nop();nop(); CLR_SPI_CK;nop();nop(); SET_SPI_CK;nop();nop(); SPIData <<= 1; } } ///////////////////////////////////////////////////////////////////// //功 能：寻卡 //参数说明: req_code[IN]:寻卡方式 // 0x52 = 寻感应区内所有符合14443A标准的卡 // 0x26 = 寻未进入休眠状态的卡 // pTagType[OUT]：卡片类型代码 // 0x4400 = Mifare_UltraLight // 0x0400 = Mifare_One(S50) // 0x0200 = Mifare_One(S70) // 0x0800 = Mifare_Pro(X) // 0x4403 = Mifare_DESFire //返 回: 成功返回MI_OK ///////////////////////////////////////////////////////////////////// char PcdRequest(unsigned char data req_code,unsigned char *pTagType) { char data status; unsigned int data unLen; unsigned char data ucComMF522Buf[MAXRLEN]; ClearBitMask(Status2Reg,0x08); WriteRawRC(BitFramingReg,0x07); SetBitMask(TxControlReg,0x03); ucComMF522Buf[0] = req_code; status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,1,ucComMF522Buf,&unLen); if ((status == MI_OK) && (unLen == 0x10)) { *pTagType = ucComMF522Buf[0]; *(pTagType+1) = ucComMF522Buf[1]; } else { status = MI_ERR; } return status; } ///////////////////////////////////////////////////////////////////// //功 能：防冲撞 //参数说明: pSnr[OUT]:卡片序列号，4字节 //返 回: 成功返回MI_OK ///////////////////////////////////////////////////////////////////// char PcdAnticoll(unsigned char *pSnr) { char data status; unsigned char data i,snr_check=0; unsigned int data unLen; unsigned char data ucComMF522Buf[MAXRLEN]; ClearBitMask(Status2Reg,0x08); WriteRawRC(BitFramingReg,0x00); ClearBitMask(CollReg,0x80); ucComMF522Buf[0] = PICC_ANTICOLL1; ucComMF522Buf[1] = 0x20; status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,2,ucComMF522Buf,&unLen); if (status == MI_OK) { for (i=0; i<4; i++) { *(pSnr+i) = ucComMF522Buf[i]; snr_check ^= ucComMF522Buf[i]; } if (snr_check != ucComMF522Buf[i]) { status = MI_ERR; } } SetBitMask(CollReg,0x80); return status; } ///////////////////////////////////////////////////////////////////// //功 能：选定卡片 //参数说明: pSnr[IN]:卡片序列号，4字节 //返 回: 成功返回MI_OK ///////////////////////////////////////////////////////////////////// char PcdSelect(unsigned char *pSnr) { char data status; unsigned char data i; unsigned int data unLen; unsigned char data ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_ANTICOLL1; ucComMF522Buf[1] = 0x70; ucComMF522Buf[6] = 0; for (i=0; i<4; i++) { ucComMF522Buf[i+2] = *(pSnr+i); ucComMF522Buf[6] ^= *(pSnr+i); } CalulateCRC(ucComMF522Buf,7,&ucComMF522Buf[7]); ClearBitMask(Status2Reg,0x08); status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,9,ucComMF522Buf,&unLen); if ((status == MI_OK) && (unLen == 0x18)) { status = MI_OK; } else { status = MI_ERR; } return status; } ///////////////////////////////////////////////////////////////////// //功 能：验证卡片密码 //参数说明: auth_mode[IN]: 密码验证模式 // 0x60 = 验证A密钥 // 0x61 = 验证B密钥 // addr[IN]：块地址 // pKey[IN]：密码 // pSnr[IN]：卡片序列号，4字节 //返 回: 成功返回MI_OK ///////////////////////////////////////////////////////////////////// char PcdAuthState(unsigned char data auth_mode,unsigned char data addr,unsigned char *pKey,unsigned char *pSnr) { char data status; unsigned int data unLen; unsigned char data i,ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = auth_mode; ucComMF522Buf[1] = addr; for (i=0; i<6; i++) { ucComMF522Buf[i+2] = *(pKey+i); } for (i=0; i<6; i++) { ucComMF522Buf[i+8] = *(pSnr+i); } // memcpy(&ucComMF522Buf[2], pKey, 6); // memcpy(&ucComMF522Buf[8], pSnr, 4); status = PcdComMF522(PCD_AUTHENT,ucComMF522Buf,12,ucComMF522Buf,&unLen); if ((status != MI_OK) || (!(ReadRawRC(Status2Reg) & 0x08))) { status = MI_ERR; } return status; } ///////////////////////////////////////////////////////////////////// //功 能：读取M1卡一块数据 //参数说明: addr[IN]：块地址 // pData[OUT]：读出的数据，16字节 //返 回: 成功返回MI_OK ///////////////////////////////////////////////////////////////////// char PcdRead(unsigned char data addr,unsigned char *pData) { char data status; unsigned int data unLen; unsigned char data i,ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_READ; ucComMF522Buf[1] = addr; CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]); status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen); if ((status == MI_OK) && (unLen == 0x90)) // { memcpy(pData, ucComMF522Buf, 16); } { for (i=0; i<16; i++) { *(pData+i) = ucComMF522Buf[i]; } } else { status = MI_ERR; } return status; } ///////////////////////////////////////////////////////////////////// //功 能：写数据到M1卡一块 //参数说明: addr[IN]：块地址 // pData[IN]：写入的数据，16字节 //返 回: 成功返回MI_OK ///////////////////////////////////////////////////////////////////// char PcdWrite(unsigned char data addr,unsigned char *pData) { char data status; unsigned int data unLen; unsigned char data i,ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_WRITE;