RC522单片机读写卡程序

#include <intrins.h> #include "reg52.h" #include "main.h" #include "mfrc522.h" #include <string.h> #define MAXRLEN 18 ///////////////////////////////////////////////////////////////////// //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 req_code,unsigned char *pTagType) { char status; unsigned int unLen; unsigned char ucComMF522Buf[MAXRLEN]; // unsigned char xTest ; ClearBitMask(Status2Reg,0x08); WriteRawRC(BitFramingReg,0x07); // xTest = ReadRawRC(BitFramingReg); // if(xTest == 0x07 ) // { LED_GREEN =0 ;} // else {LED_GREEN =1 ;while(1){}} SetBitMask(TxControlReg,0x03); ucComMF522Buf[0] = req_code; status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,1,ucComMF522Buf,&unLen); // if(status == MI_OK ) // { LED_GREEN =0 ;} // else {LED_GREEN =1 ;} 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 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 ///////////////////////////////////////////////////////////////////// char PcdSelect(unsigned char *pSnr) { 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 ///////////////////////////////////////////////////////////////////// char PcdAuthState(unsigned char auth_mode,unsigned char addr,unsigned char *pKey,unsigned char *pSnr) { 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 ///////////////////////////////////////////////////////////////////// char PcdRead(unsigned char addr,unsigned char *pData) { char status; unsigned int unLen; unsigned char 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 addr,unsigned char *pData) { char status; unsigned int unLen; unsigned char i,ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_WRITE; ucComMF522Buf[1] = addr; CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]); status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen); if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A)) { status = MI_ERR; } if (status == MI_OK) { //memcpy(ucComMF522Buf, pData, 16); for (i=0; i<16; i++) { ucComMF522Buf[i] = *(pData+i); } CalulateCRC(ucComMF522Buf,16,&ucComMF522Buf[16]); status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,18,ucComMF522Buf,&unLen); if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A)) { status = MI_ERR; } } return status; } ///////////////////////////////////////////////////////////////////// //功 能：命令卡片进入休眠状态 //返 回: 成功返回MI_OK ///////////////////////////////////////////////////////////////////// char PcdHalt(void) { char status; unsigned int unLen; unsigned char ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_HALT; ucComMF522Buf[1] = 0; CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]); status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen); return MI_OK; } ///////////////////////////////////////////////////////////////////// //用MF522计算CRC16函数 ///////////////////////////////////////////////////////////////////// void CalulateCRC(unsigned char *pIndata,unsigned char len,unsigned char *pOutData) { unsigned char i,n; ClearBitMask(DivIrqReg,0x04); WriteRawRC(CommandReg,PCD_IDLE); SetBitMask(FIFOLevelReg,0x80); for (i=0; i<len; i++) { WriteRawRC(FIFODataReg, *(pIndata+i)); } WriteRawRC(CommandReg, PCD_CALCCRC); i = 0xFF; do { n = ReadRawRC(DivIrqReg); i--; } while ((i!=0) && !(n&0x04)); pOutData[0] = ReadRawRC(CRCResultRegL); pOutData[1] = ReadRawRC(CRCResultRegM); } //