本文主要是介绍RC522 读卡，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
Rc522对时序的要求很高，不能太快了，太快了它反应不过来，还有对硬件要求，线圈的长度等都会导致不灵敏，这个要调电容。下面这大哥说的很清楚。
RC522的天线设计和参考示例_rc522天线计算-CSDN博客
RC522.c
#include "main.h"#define MAXRLEN 18
#define time_s 96
//MFRC522
#define MF522_RST PAout(8) //RC500片选
#define MF522_NSS PBout(12) //
#define MF522_SCK PBout(13)
#define MF522_SO PBin(15)
#define MF522_SI PBout(14)
//#define MF522_SO PBout(15)
//#define MF522_SI PBin(14) #define MF522_RST_pin GPIO_PIN_8 //RC500片选
#define MF522_NSS_pin GPIO_PIN_12
#define MF522_SCK_pin GPIO_PIN_13
#define MF522_SI_pin GPIO_PIN_14
#define MF522_SO_pin GPIO_PIN_15#define MF522_RST_GP GPIOA //RC500片选
#define MF522_NSS_GP GPIOB
#define MF522_SCK_GP GPIOB
#define MF522_SI_GP GPIOB
#define MF522_SO_GP GPIOB#define RCAP2LH = 0xCA;
#define T2LH = 0xCC;
#define MAXRLEN 18 void SPI_inti(void){GPIO_InitTypeDef GPIO_InitStruct ={0};__HAL_RCC_GPIOA_CLK_ENABLE();__HAL_RCC_GPIOB_CLK_ENABLE();__HAL_RCC_GPIOC_CLK_ENABLE();GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;GPIO_InitStruct.Pin = MF522_SCK_pin; //sckHAL_GPIO_Init(MF522_SCK_GP,&GPIO_InitStruct);GPIO_InitStruct.Pin = MF522_RST_pin; //RSTHAL_GPIO_Init(MF522_RST_GP,&GPIO_InitStruct);GPIO_InitStruct.Pin = MF522_NSS_pin; //SNNHAL_GPIO_Init(MF522_NSS_GP,&GPIO_InitStruct);//LED灯GPIO_InitStruct.Pin = GPIO_PIN_4;HAL_GPIO_Init(GPIOB,&GPIO_InitStruct);GPIO_InitStruct.Pin = MF522_SI_pin;HAL_GPIO_Init(MF522_SI_GP,&GPIO_InitStruct); //MSI 输出GPIO_InitStruct.Mode = GPIO_MODE_INPUT;GPIO_InitStruct.Pin = MF522_SO_pin; //MSO 输入HAL_GPIO_Init(MF522_SO_GP,&GPIO_InitStruct);
}void FRID_init(void){
// PcdReset();PcdAntennaOff(); PcdAntennaOn();
// M500PcdConfigISOType( 'A' );
// HAL_Delay(100);
// PcdAntennaOff();
// PcdAntennaOn();SPI_inti();PcdReset();PcdAntennaOff(); PcdAntennaOn(); M500PcdConfigISOType( 'A' );HAL_Delay(100);}
/
//功 能：寻
//参数说明: Key_A:密码A
// Key_B:密码A
// Control：控制码
// Section: 扇区 0-15
//返 回: 成功返回MI_OK
/char Set_Control_Password(unsigned char* Key_A, unsigned char* Key_B,unsigned char* Control,unsigned char Section){unsigned char Set_data[16];unsigned int i=0;if(My_Request(26) != MI_OK){return MI_ERR;}for(;i<16;i++){if(i<6){Set_data[i]=Key_A[i];}else if(i>=6 && i <10){Set_data[i]=Control[i-6];}else if(i>=10){Set_data[i]=Key_B[i-10];}}if(PcdWrite(Section*4+3,Set_data) == MI_OK){
// printf("设置成功\n");return MI_OK;}return MI_ERR;
}/
//功 能：寻卡,读取卡号，防碰撞，验证密码
//返 回: 成功返回MI_OK
/
char My_Request(u8 type){if( PcdRequest(type,&(RevBuffer[0])) == MI_OK ){
// printf("检测到卡片\n");if(PcdAnticoll(&(RevBuffer[0])) == MI_OK){
// printf("防碰撞成功获取卡号：");
// for(int i = 0;i < strlen((char *)RevBuffer);i++){
// printf("%x",RevBuffer[i]);
// }
// u8_to_HexStr((u8*)RevBuffer,(u8*)parameterAll.SN,4);
// strncpy(parameterAll.SN,RevBuffer,4);
// printf("\n");if(PcdSelect(RevBuffer) == MI_OK ){
// printf("选卡成功\n");return MI_OK;// if( PcdAuthState(0x60,page,DefaultKey,RevBuffer) == MI_OK && PcdAuthState(0x61,page,DefaultKey,RevBuffer) == MI_OK ){
// printf("AB密码同时验证成功\n");
// return MI_OK;
// }}}}return MI_ERR;
}char Read_Card(unsigned char read_page,unsigned char* password_A,unsigned char*password_B,unsigned char * card_num ,unsigned char* read_buf){if( PcdAuthState(0x60,read_page,password_A,card_num) == MI_OK && PcdAuthState(0x61,read_page,password_A,card_num) == MI_OK ){printf("AB密码同时验证成功\n");if(PcdRead(read_page,read_buf) == MI_OK){return MI_OK;}}return MI_ERR;
}char Write_Card(unsigned char read_page,unsigned char* password_A,unsigned char*password_B,unsigned char * card_num,unsigned char* write_buf){if( PcdAuthState(0x60,read_page,password_A,card_num) == MI_OK && PcdAuthState(0x61,read_page,password_A,card_num) == MI_OK ){printf("AB密码同时验证成功\n");if(PcdWrite(read_page,write_buf) == MI_OK){printf("写入成功\n");return MI_OK;}}return MI_ERR;}
/
//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);
}/
//功 能：复位RC522
//返 回: 成功返回MI_OK
/
char PcdReset(void)
{MF522_RST=1;delay_us(10);MF522_RST=0;delay_us(10);MF522_RST=1;delay_us(10);WriteRawRC(CommandReg,PCD_RESETPHASE);WriteRawRC(ModeReg,0x3D); //和Mifare卡通讯，CRC初始值0x6363WriteRawRC(TReloadRegL,30); WriteRawRC(TReloadRegH,0);WriteRawRC(TModeReg,0x8D);WriteRawRC(TPrescalerReg,0x3E);WriteRawRC(TxAutoReg,0x40); return MI_OK;
}
//
//设置RC632的工作方式
//
char M500PcdConfigISOType(unsigned char type)
{if (type == 'A') //ISO14443_A{ ClearBitMask(Status2Reg,0x08);/* WriteRawRC(CommandReg,0x20); //as default WriteRawRC(ComIEnReg,0x80); //as defaultWriteRawRC(DivlEnReg,0x0); //as defaultWriteRawRC(ComIrqReg,0x04); //as defaultWriteRawRC(DivIrqReg,0x0); //as defaultWriteRawRC(Status2Reg,0x0);//80 //trun off temperature sensorWriteRawRC(WaterLevelReg,0x08); //as defaultWriteRawRC(ControlReg,0x20); //as defaultWriteRawRC(CollReg,0x80); //as default
*/WriteRawRC(ModeReg,0x3D);//3F
/* WriteRawRC(TxModeReg,0x0); //as default???WriteRawRC(RxModeReg,0x0); //as default???WriteRawRC(TxControlReg,0x80); //as default???WriteRawRC(TxSelReg,0x10); //as default???*/WriteRawRC(RxSelReg,0x86);//84// WriteRawRC(RxThresholdReg,0x84);//as default// WriteRawRC(DemodReg,0x4D); //as default// WriteRawRC(ModWidthReg,0x13);//26WriteRawRC(RFCfgReg,0x7F); //4F/* WriteRawRC(GsNReg,0x88); //as default???WriteRawRC(CWGsCfgReg,0x20); //as default???WriteRawRC(ModGsCfgReg,0x20); //as default???
*/WriteRawRC(TReloadRegL,30);//tmoLength);// TReloadVal = 'h6a =tmoLength(dec) WriteRawRC(TReloadRegH,0);WriteRawRC(TModeReg,0x8D);WriteRawRC(TPrescalerReg,0x3E);// PcdSetTmo(106);delay_10ms(1);PcdAntennaOn();}else{ return -1; }return MI_OK;
}
/
//功 能：读RC632寄存器
//参数说明：Address[IN]:寄存器地址
//返 回：读出的值
/
unsigned char ReadRawRC(unsigned char Address)
{unsigned char i, ucAddr;unsigned char ucResult=0;MF522_SCK = 0;MF522_NSS = 0;ucAddr = ((Address<<1)&0x7E)|0x80;for(i=8;i>0;i--){MF522_SI = ((ucAddr&0x80)==0x80);MF522_SCK = 1;ucAddr <<= 1;MF522_SCK = 0;}for(i=8;i>0;i--){MF522_SCK = 1;ucResult <<= 1;ucResult|=MF522_SO;MF522_SCK = 0;}MF522_NSS = 1;MF522_SCK = 1;return ucResult;
}/
//功 能：写RC632寄存器
//参数说明：Address[IN]:寄存器地址
// value[IN]:写入的值
/void WriteRawRC(unsigned char Address, unsigned char value)
{ unsigned char i, ucAddr;MF522_SCK = 0;// 片选MF522_NSS = 0;// 先左移是为了确定地址，与上0x7e即取1到6位ucAddr = ((Address<<1)&0x7E);// 先送地址位for(i=8;i>0;i--){MF522_SI = ((ucAddr&0x80)==0x80);// 时钟线变换MF522_SCK = 1;ucAddr <<= 1;MF522_SCK = 0;delay_us(10); }// 再送数据for(i=8;i>0;i--){MF522_SI = ((value&0x80)==0x80);// 时钟线变换MF522_SCK = 1;value <<= 1;MF522_SCK = 0;delay_us(10); }MF522_NSS = 1;MF522_SCK = 1;
}#if 0
void WriteRawRC(unsigned char Address, unsigned char value)
{ unsigned char i, ucAddr;MF522_SCK = 0;MF522_NSS = 0;ucAddr = ((Address<<1)&0x7E);for(i=8;i>0;i--){
// MF522_SI = ((ucAddr&0x80)==0x80);
// MF522_SCK = 1;
// delay_us(time_s);
// ucAddr <<= 1;
// MF522_SCK = 0;
// delay_us(time_s);MF522_SI = ((ucAddr&0x80)==0x80);MF522_SCK = 1;delay_us(time_s);ucAddr <<= 1;MF522_SCK = 0;delay_us(time_s);}for(i=8;i>0;i--){MF522_SI = ((value&0x80)==0x80);MF522_SCK = 1;delay_us(5);value <<= 1;MF522_SCK = 0;}MF522_NSS = 1;MF522_SCK = 1;
}
#endif
/
//功 能：置RC522寄存器位
//参数说明：reg[IN]:寄存器地址
// mask[IN]:置位值
/
void SetBitMask(unsigned char reg,unsigned char mask)
{char tmp = 0x0;tmp = ReadRawRC(reg);WriteRawRC(reg,tmp | mask); // set bit mask
}/
//功 能：清RC522寄存器位
//参数说明：reg[IN]:寄存器地址
// mask[IN]:清位值
/
void ClearBitMask(unsigned char reg,unsigned char mask)
{char tmp = 0x0;tmp = ReadRawRC(reg);WriteRawRC(reg, tmp & ~mask); // clear bit mask
} /
//功 能：通过RC522和ISO14443卡通讯
//参数说明：Command[IN]:RC522命令字
// pInData[IN]:通过RC522发送到卡片的数据
// InLenByte[IN]:发送数据的字节长度
// pOutData[OUT]:接收到的卡片返回数据
// *pOutLenBit[OUT]:返回数据的位长度
/
char PcdComMF522(unsigned char Command, unsigned char *pInData, unsigned char InLenByte,unsigned char *pOutData, unsigned int *pOutLenBit)
{char status = MI_ERR;unsigned char irqEn = 0x00;unsigned char waitFor = 0x00;unsigned char lastBits;unsigned char n;unsigned int i;switch (Command){case PCD_AUTHENT:irqEn = 0x12;waitFor = 0x10;break;case PCD_TRANSCEIVE:irqEn = 0x77;waitFor = 0x30;break;default:break;}WriteRawRC(ComIEnReg,irqEn|0x80);ClearBitMask(ComIrqReg,0x80);WriteRawRC(CommandReg,PCD_IDLE);SetBitMask(FIFOLevelReg,0x80);for (i=0; i<InLenByte; i++){ WriteRawRC(FIFODataReg, pInData[i]); }WriteRawRC(CommandReg, Command);if (Command == PCD_TRANSCEIVE){ SetBitMask(BitFramingReg,0x80); }// i = 600;//根据时钟频率调整，操作M1卡最大等待时间25msi = 2000;do {n = ReadRawRC(ComIrqReg);i--;}while ((i!=0) && !(n&0x01) && !(n&waitFor));ClearBitMask(BitFramingReg,0x80);if (i!=0){ if(!(ReadRawRC(ErrorReg)&0x1B)){status = MI_OK;if (n & irqEn & 0x01){ status = MI_NOTAGERR; }if (Command == PCD_TRANSCEIVE){n = ReadRawRC(FIFOLevelReg);lastBits = ReadRawRC(ControlReg) & 0x07;if (lastBits){ *pOutLenBit = (n-1)*8 + lastBits; }else{ *pOutLenBit = n*8; }if (n == 0){ n = 1; }if (n > MAXRLEN){ n = MAXRLEN; }for (i=0; i<n; i++){ pOutData[i] = ReadRawRC(FIFODataReg); }}}else{ status = MI_ERR; }}SetBitMask(ControlReg,0x80); // stop timer nowWriteRawRC(CommandReg,PCD_IDLE); return status;
}/
//开启天线
//每次启动或关闭天险发射之间应至少有1ms的间隔
/
void PcdAntennaOn()
{unsigned char i;i = ReadRawRC(TxControlReg);if (!(i & 0x03)){SetBitMask(TxControlReg, 0x03);}
}/
//关闭天线
/
void PcdAntennaOff()
{ClearBitMask(TxControlReg, 0x03);
}/
//功 能：扣款和充值
//参数说明: dd_mode[IN]：命令字
// 0xC0 = 扣款
// 0xC1 = 充值
// addr[IN]：钱包地址
// pValue[IN]：4字节增(减)值，低位在前
//返 回: 成功返回MI_OK
/
char PcdValue(unsigned char dd_mode,unsigned char addr,unsigned char *pValue)
{char status;unsigned int unLen;unsigned char ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = dd_mode;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, pValue, 4);// for (i=0; i<16; i++)// { ucComMF522Buf[i] = *(pValue+i); }CalulateCRC(ucComMF522Buf,4,&ucComMF522Buf[4]);unLen = 0;status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,6,ucComMF522Buf,&unLen);if (status != MI_ERR){ status = MI_OK; }}if (status == MI_OK){ucComMF522Buf[0] = PICC_TRANSFER;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; }}return status;
}/
//功 能：备份钱包
//参数说明: sourceaddr[IN]：源地址
// goaladdr[IN]：目标地址
//返 回: 成功返回MI_OK
/
char PcdBakValue(unsigned char sourceaddr, unsigned char goaladdr)
{char status;unsigned int unLen;unsigned char ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_RESTORE;ucComMF522Buf[1] = sourceaddr;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){ucComMF522Buf[0] = 0;ucComMF522Buf[1] = 0;ucComMF522Buf[2] = 0;ucComMF522Buf[3] = 0;CalulateCRC(ucComMF522Buf,4,&ucComMF522Buf[4]);status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,6,ucComMF522Buf,&unLen);if (status != MI_ERR){ status = MI_OK; }}if (status != MI_OK){ return MI_ERR; }ucComMF522Buf[0] = PICC_TRANSFER;ucComMF522Buf[1] = goaladdr;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; }return status;
}///
// Delay 10ms
///
void delay_10ms(unsigned int _10ms)
{delay_ms(_10ms*10);
}
RC522.h
#ifndef MFRC522_H
#define MFRC522_H/
//外部变量
/
extern unsigned char RevBuffer[30];
extern unsigned char DefaultKey[6];
extern unsigned char page ;
//
//函数原型
/char PcdReset(void);
void PcdAntennaOn(void);
void PcdAntennaOff(void);
char PcdRequest(unsigned char req_code,unsigned char *pTagType);
char PcdAnticoll(unsigned char *pSnr);
char PcdSelect(unsigned char *pSnr);
char PcdAuthState(unsigned char auth_mode,unsigned char addr,unsigned char *pKey,unsigned char *pSnr);
char PcdRead(unsigned char addr,unsigned char *pData);
char PcdWrite(unsigned char addr,unsigned char *pData);
char PcdValue(unsigned char dd_mode,unsigned char addr,unsigned char *pValue);
char PcdBakValue(unsigned char sourceaddr, unsigned char goaladdr);
char PcdHalt(void);
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);
void WriteRawRC(unsigned char Address,unsigned char value);
unsigned char ReadRawRC(unsigned char Address);
void SetBitMask(unsigned char reg,unsigned char mask);
void ClearBitMask(unsigned char reg,unsigned char mask);
char M500PcdConfigISOType(unsigned char type);
void delay_10ms(unsigned int _10ms);
//void iccardcode();
char PcdBakValue(unsigned char sourceaddr, unsigned char goaladdr);
char PcdValue(unsigned char dd_mode,unsigned char addr,unsigned char *pValue);
/
//MF522命令字
/
#define PCD_IDLE 0x00 //取消当前命令
#define PCD_AUTHENT 0x0E //验证密钥
#define PCD_RECEIVE 0x08 //接收数据
#define PCD_TRANSMIT 0x04 //发送数据
#define PCD_TRANSCEIVE 0x0C //发送并接收数据
#define PCD_RESETPHASE 0x0F //复位
#define PCD_CALCCRC 0x03 //CRC计算/
//Mifare_One卡片命令字
/
#define PICC_REQIDL 0x26 //寻天线区内未进入休眠状态
#define PICC_REQALL 0x52 //寻天线区内全部卡
#define PICC_ANTICOLL1 0x93 //防冲撞
#define PICC_ANTICOLL2 0x95 //防冲撞
#define PICC_AUTHENT1A 0x60 //验证A密钥
#define PICC_AUTHENT1B 0x61 //验证B密钥
#define PICC_READ 0x30 //读块
#define PICC_WRITE 0xA0 //写块
#define PICC_DECREMENT 0xC0 //扣款
#define PICC_INCREMENT 0xC1 //充值
#define PICC_RESTORE 0xC2 //调块数据到缓冲区
#define PICC_TRANSFER 0xB0 //保存缓冲区中数据
#define PICC_HALT 0x50 //休眠/
//MF522 FIFO长度定义
/
#define DEF_FIFO_LENGTH 64 //FIFO size=64byte/
//MF522寄存器定义
/
// PAGE 0
#define RFU00 0x00
#define CommandReg 0x01
#define ComIEnReg 0x02
#define DivlEnReg 0x03
#define ComIrqReg 0x04
#define DivIrqReg 0x05
#define ErrorReg 0x06
#define Status1Reg 0x07
#define Status2Reg 0x08
#define FIFODataReg 0x09
#define FIFOLevelReg 0x0A
#define WaterLevelReg 0x0B
#define ControlReg 0x0C
#define BitFramingReg 0x0D
#define CollReg 0x0E
#define RFU0F 0x0F
// PAGE 1
#define RFU10 0x10
#define ModeReg 0x11
#define TxModeReg 0x12
#define RxModeReg 0x13
#define TxControlReg 0x14
#define TxAutoReg 0x15
#define TxSelReg 0x16
#define RxSelReg 0x17
#define RxThresholdReg 0x18
#define DemodReg 0x19
#define RFU1A 0x1A
#define RFU1B 0x1B
#define MifareReg 0x1C
#define RFU1D 0x1D
#define RFU1E 0x1E
#define SerialSpeedReg 0x1F
// PAGE 2
#define RFU20 0x20
#define CRCResultRegM 0x21
#define CRCResultRegL 0x22
#define RFU23 0x23
#define ModWidthReg 0x24
#define RFU25 0x25
#define RFCfgReg 0x26
#define GsNReg 0x27
#define CWGsCfgReg 0x28
#define ModGsCfgReg 0x29
#define TModeReg 0x2A
#define TPrescalerReg 0x2B
#define TReloadRegH 0x2C
#define TReloadRegL 0x2D
#define TCounterValueRegH 0x2E
#define TCounterValueRegL 0x2F
// PAGE 3
#define RFU30 0x30
#define TestSel1Reg 0x31
#define TestSel2Reg 0x32
#define TestPinEnReg 0x33
#define TestPinValueReg 0x34
#define TestBusReg 0x35
#define AutoTestReg 0x36
#define VersionReg 0x37
#define AnalogTestReg 0x38
#define TestDAC1Reg 0x39
#define TestDAC2Reg 0x3A
#define TestADCReg 0x3B
#define RFU3C 0x3C
#define RFU3D 0x3D
#define RFU3E 0x3E
#define RFU3F 0x3F/
//和MF522通讯时返回的错误代码
/
#define MI_OK 0
#define MI_NOTAGERR (-1)
#define MI_ERR (-2)//自定义函数
/
char My_Request(unsigned char type);
void SPI_inti(void);
char Set_Control_Password(unsigned char* Key_A, unsigned char* Key_B,unsigned char* Control,unsigned char Section);
void FRID_init(void);
char Write_Card(unsigned char read_page,unsigned char* password_A,unsigned char*password_B,unsigned char * card_num,unsigned char* write_buf);
char Read_Card(unsigned char read_page,unsigned char* password_A,unsigned char*password_B,unsigned char * card_num,unsigned char* read_buf);#endif这篇关于RC522 读卡的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
