platfrom-misc-rfid-linux2.6.32.tar.gz

#include "rc522.h" void ClearBitMask(unsigned char reg,unsigned char mask); void WriteRawRC(unsigned char Address, unsigned char value); void SetBitMask(unsigned char reg,unsigned char mask); signed char PcdComMF522(unsigned char Command, unsigned char *pInData, unsigned char InLenByte, unsigned char *pOutData, unsigned int *pOutLenBit); void CalulateCRC(unsigned char *pIndata,unsigned char len,unsigned char *pOutData); unsigned char ReadRawRC(unsigned char Address); void PcdAntennaOn(void); /*************************************call by other file,please copy then*********************************/ extern signed char PcdReset(void); extern signed char PcdRequest(unsigned char req_code,unsigned char *pTagType); extern void PcdAntennaOn(void); extern void PcdAntennaOff(void); extern signed char M500PcdConfigISOType(unsigned char type); extern signed char PcdAnticoll(unsigned char *pSnr); extern signed char PcdSelect(unsigned char *pSnr); extern signed char PcdAuthState(unsigned char auth_mode,unsigned char addr,unsigned char *pKey,unsigned char *pSnr); extern signed char PcdWrite(unsigned char addr,unsigned char *pData); extern signed char PcdRead(unsigned char addr,unsigned char *pData); extern signed char PcdHalt(void); /*************************************call by other file*********************************/ //------------------------------------------ // 读慈胍桓鯾yte //------------------------------------------ unsigned char SPIReadByte(void) { unsigned char SPICount; // Counter used to clock out the data unsigned char 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; ndelay(100); //spi_ck 时序操作 ，输出0 // Raise the clock to clock the data out of the MAX7456 if(STU_SPI_MISO) //spi_miso 读取最后一位 { SPIData|=0x01; } SET_SPI_CK; ndelay(100); //spi_ck 时序操作 ，输出1 // 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 SPIData) { unsigned char SPICount; // Counter used to clock out the data for (SPICount = 0; SPICount < 8; SPICount++) { if (SPIData & 0x80) { SET_SPI_MOSI; //spi_mosi 写出一位 } else { CLR_SPI_MOSI; } ndelay(100); //spi_ck 时序操作 CLR_SPI_CK;ndelay(100); //spi_ck 时序操作 ，输出0 SET_SPI_CK;ndelay(100); //spi_ck 时序操作 ，输出1 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 ///////////////////////////////////////////////////////////////////// signed char PcdRequest(unsigned char req_code,unsigned char *pTagType) { signed char status; unsigned int unLen; unsigned char ucComMF522Buf[MAXRLEN]; ClearBitMask(Status2Reg,0x08); WriteRawRC(BitFramingReg,0x07); SetBitMask(TxControlReg,0x03); ucComMF522Buf[0] = req_code; status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,1,ucComMF522Buf,&unLen); printk("rc522.c-PcdRequest: status = %d\n",status); 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 ///////////////////////////////////////////////////////////////////// signed char PcdAnticoll(unsigned char *pSnr) { signed char status; unsigned char i,snr_check=0; unsigned int unLen; unsigned char 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 ///////////////////////////////////////////////////////////////////// signed char PcdSelect(unsigned char *pSnr) { signed char status; unsigned char i; unsigned int unLen; unsigned char 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 ///////////////////////////////////////////////////////////////////// signed char PcdAuthState(unsigned char auth_mode,unsigned char addr,unsigned char *pKey,unsigned char *pSnr) { signed char status; unsigned int unLen; unsigned char 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 ///////////////////////////////////////////////////////////////////// signed char PcdRead(unsigned char addr,unsigned char *pData) { signed char status; unsigned int unLen; unsigned char i,ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_READ; ucComMF522Buf[1] = addr; CalulateCRC(ucComMF522Bu