MF RC522是应用于13.56MHz非接触式通信中高集成度的读写卡芯片,是NXP公司针对“三表”应用推出的一款低电压、低成本、体积小的非接触式读写卡芯片,是智能仪表和便携式手持设备研发的较好选择。 MF RC522利用了先进的调制和解调概念,完全集成了在13.56MHz下所有类型的被动非接触式通信方式和协议。支持14443A兼容应答器信号。数字部分处理ISO14443A帧和错误检测。此外,还支持快速CRYPTO1加密算法,用语验证MIFARE系列产品。MFRC522支持MIFARE系列更高速的非接触式通信,双向数据传输速率高达424kbit/s。 作为13.56MHz高集成度读写卡系列芯片家族的新成员,MF RC522与MF RC500和MF RC530有不少相似之处,同时也具备许多特点和差异。它与主机间通信采用SPI模式,有利于减少连线,缩小PCB板体积,降低成本。
- 工作电流:13—26mA/直流3.3V
- 空闲电流:10-13mA/直流3.3V
- 休眠电流:<80uA
- 峰值电流:<30mA
- 工作频率:13.56MHz
- 产品物理特性:尺寸:40mm×60mm
- 环境工作温度:摄氏-20—80度
- 环境储存温度:摄氏-40—85度
- 环境相对湿度:相对湿度5%—95%
- 通讯方式:SPI(数据最大传输速率:10Mbit/s )
- pcDuino3 x1
- RFID RC522 x1
- 公-母杜邦线 x7
- 符合上面描述的RFID标签 x1
#include "core.h" #define uchar unsigned char #define uint unsigned int //data array maxium length #define MAX_LEN 16 ///////////////////////////////////////////////////////// //set the pin //////////////////////////////////////////////////////// #define _CS 10 #define _SCK 13 #define _MOSI 11 #define _MISO 12 #define NRSTPD 9 //MF522 command bits #define PCD_IDLE 0x00 //NO action; cancel current commands #define PCD_AUTHENT 0x0E //verify password key #define PCD_RECEIVE 0x08 //receive data #define PCD_TRANSMIT 0x04 //send data #define PCD_TRANSCEIVE 0x0C //send and receive data #define PCD_RESETPHASE 0x0F //reset #define PCD_CALCCRC 0x03 //CRC check and caculation //Mifare_One card command bits #define PICC_REQIDL 0x26 //Search the cards that not into sleep mode in the antenna area #define PICC_REQALL 0x52 //Search all the cards in the antenna area #define PICC_ANTICOLL 0x93 //prevent conflict #define PICC_SElECTTAG 0x93 //select card #define PICC_AUTHENT1A 0x60 //verify A password key #define PICC_AUTHENT1B 0x61 //verify B password key #define PICC_READ 0x30 //read #define PICC_WRITE 0xA0 //write #define PICC_DECREMENT 0xC0 //deduct value #define PICC_INCREMENT 0xC1 //charge up value #define PICC_RESTORE 0xC2 //Restore data into buffer #define PICC_TRANSFER 0xB0 //Save data into buffer #define PICC_HALT 0x50 //sleep mode //THe mistake code that return when communicate with MF522 #define MI_OK 0 #define MI_NOTAGERR 1 #define MI_ERR 2 //------------------MFRC522 register --------------- //Page 0:Command and Status #define Reserved00 0x00 #define CommandReg 0x01 #define CommIEnReg 0x02 #define DivlEnReg 0x03 #define CommIrqReg 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 Reserved01 0x0F //Page 1:Command #define Reserved10 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 Reserved11 0x1A #define Reserved12 0x1B #define MifareReg 0x1C #define Reserved13 0x1D #define Reserved14 0x1E #define SerialSpeedReg 0x1F //Page 2:CFG #define Reserved20 0x20 #define CRCResultRegM 0x21 #define CRCResultRegL 0x22 #define Reserved21 0x23 #define ModWidthReg 0x24 #define Reserved22 0x25 #define RFCfgReg 0x26 #define GsNReg 0x27 #define CWGsPReg 0x28 #define ModGsPReg 0x29 #define TModeReg 0x2A #define TPrescalerReg 0x2B #define TReloadRegH 0x2C #define TReloadRegL 0x2D #define TCounterValueRegH 0x2E #define TCounterValueRegL 0x2F //Page 3:TestRegister #define Reserved30 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 Reserved31 0x3C #define Reserved32 0x3D #define Reserved33 0x3E #define Reserved34 0x3F //----------------------------------------------- //4 bytes Serial number of card, the 5 bytes is verfiy bytes uchar serNum[5]; void setup() { pinMode(_CS,OUTPUT); pinMode(_SCK,OUTPUT); pinMode(_MOSI,OUTPUT); pinMode(_MISO,INPUT); pinMode(NRSTPD,OUTPUT); // Not Reset and Power-down pinMode(NRSTPD,OUTPUT); // Set digital pin 5 , Not Reset and Power-down MFRC522_Init(); printf("RC522 test\n"); } void loop() { uchar status; uchar str[MAX_LEN]; // Search card, return card types status = MFRC522_Request(PICC_REQIDL, str); if (status != MI_OK) { return; } //Show card type ShowCardType(str); //Prevent conflict, return the 4 bytes Serial number of the card status = MFRC522_Anticoll(str); // str[0..3]: serial number of the card // str[4]: XOR checksum of the SN. if (status == MI_OK) { printf("The card's number is: "); memcpy(serNum, str, 5); ShowCardID(serNum); } MFRC522_Halt(); //command the card into sleep mode delay(200); } /* * Function:ShowCardID * Description:Show Card ID * Input parameter:ID string * Return:Null */ void ShowCardID(uchar *id) { int IDlen=4; for(int i=0; i<IDlen; i++){ printf("%X",(0x0F & (id[i]>>4))); printf("%X",(0x0F & id[i])); } printf("\n-------------------------\n"); } /* * Function:ShowCardType * Description:Show Card type * Input parameter:Type string * Return:Null */ void ShowCardType(uchar* type) { printf("Card type: "); if(type[0]==0x04&&type[1]==0x00) printf("MFOne-S50\n"); else if(type[0]==0x02&&type[1]==0x00) printf("MFOne-S70\n"); else if(type[0]==0x44&&type[1]==0x00) printf("MF-UltraLight\n"); else if(type[0]==0x08&&type[1]==0x00) printf("MF-Pro\n"); else if(type[0]==0x44&&type[1]==0x03) printf("MF Desire\n"); else printf("Unknown\n"); } /* * SPI read byte and write byte */ uchar SPIReadByte(void) { uchar SPICount; // Counter used to clock out the data uchar SPIData; SPIData = 0; for (SPICount = 0; SPICount < 8; SPICount++) // Prepare to clock in the data to be read { SPIData <<=1; // Rotate the data digitalWrite(_SCK,LOW);// Raise the clock to clock the data out of the MAX7456 if(digitalRead(_MISO)) { SPIData|=0x01; } digitalWrite(_SCK,HIGH); // Drop the clock ready for the next bit } // and loop back return (SPIData); // Finally return the read data } void SPIWriteByte(uchar SPIData) { uchar SPICount; // Counter used to clock out the data for (SPICount = 0; SPICount < 8; SPICount++) { if (SPIData & 0x80) { digitalWrite(_MOSI,HIGH); } else { digitalWrite(_MOSI,LOW); } digitalWrite(_SCK,LOW); SPIData <<= 1; digitalWrite(_SCK,HIGH); } } /* * Function:Write_MFRC5200 * Description:write a byte data into one register of MR RC522 * Input parameter:addr--register address;val--the value that need to write in * Return:Null */ void Write_MFRC522(uchar addr, uchar val) { digitalWrite(_CS, LOW); SPIWriteByte((addr<<1)&0x7E); SPIWriteByte(val); digitalWrite(_CS, HIGH); } /* * Function:Read_MFRC522 * Description:read a byte data into one register of MR RC522 * Input parameter:addr--register address * Return:return the read value */ uchar Read_MFRC522(uchar addr) { uchar val; digitalWrite(_CS, LOW); SPIWriteByte(((addr<<1)&0x7E)|0x80); val = SPIReadByte(); digitalWrite(_CS, HIGH); return val; } /* * Function:SetBitMask * Description:set RC522 register bit * Input parameter:reg--register address;mask--value * Return:null */ void SetBitMask(uchar reg, uchar mask) { uchar tmp; tmp = Read_MFRC522(reg); Write_MFRC522(reg, tmp | mask); // set bit mask } /* * Function:ClearBitMask * Description:clear RC522 register bit * Input parameter:reg--register address;mask--value * Return:null */ void ClearBitMask(uchar reg, uchar mask) { uchar tmp; tmp = Read_MFRC522(reg); Write_MFRC522(reg, tmp & (~mask)); // clear bit mask } /* * Function:AntennaOn * Description:Turn on antenna, every time turn on or shut down antenna need at least 1ms delay * Input parameter:null * Return:null */ void AntennaOn(void) { uchar temp; temp = Read_MFRC522(TxControlReg); if (!(temp & 0x03)) { SetBitMask(TxControlReg, 0x03); } } /* * Function:AntennaOff * Description:Turn off antenna, every time turn on or shut down antenna need at least 1ms delay * Input parameter:null * Return:null */ void AntennaOff(void) { ClearBitMask(TxControlReg, 0x03); } /* * Function:ResetMFRC522 * Description: reset RC522 * Input parameter:null * Return:null */ void MFRC522_Reset(void) { Write_MFRC522(CommandReg, PCD_RESETPHASE); } /* * Function:InitMFRC522 * Description:initilize RC522 * Input parameter:null * Return:null */ void MFRC522_Init(void) { digitalWrite(NRSTPD,HIGH); MFRC522_Reset(); //Timer: TPrescaler*TreloadVal/6.78MHz = 24ms Write_MFRC522(TModeReg, 0x8D); //Tauto=1; f(Timer) = 6.78MHz/TPreScaler Write_MFRC522(TPrescalerReg, 0x3E); //TModeReg[3..0] + TPrescalerReg Write_MFRC522(TReloadRegL, 30); Write_MFRC522(TReloadRegH, 0); Write_MFRC522(TxAutoReg, 0x40); //100%ASK Write_MFRC522(ModeReg, 0x3D); //CRC initilizate value 0x6363 ??? //ClearBitMask(Status2Reg, 0x08); //MFCrypto1On=0 //Write_MFRC522(RxSelReg, 0x86); //RxWait = RxSelReg[5..0] //Write_MFRC522(RFCfgReg, 0x7F); //RxGain = 48dB AntennaOn(); //turn on antenna } /* * Function:MFRC522_Request * Description:Searching card, read card type * Input parameter:reqMode--search methods, * TagType--return card types * 0x4400 = Mifare_UltraLight * 0x0400 = Mifare_One(S50) * 0x0200 = Mifare_One(S70) * 0x0800 = Mifare_Pro(X) * 0x4403 = Mifare_DESFire * return:return MI_OK if successed */ uchar MFRC522_Request(uchar reqMode, uchar *TagType) { uchar status; uint backBits; //the data bits that received Write_MFRC522(BitFramingReg, 0x07); //TxLastBists = BitFramingReg[2..0] ??? TagType[0] = reqMode; status = MFRC522_ToCard(PCD_TRANSCEIVE, TagType, 1, TagType, &backBits); if ((status != MI_OK) || (backBits != 0x10)) { status = MI_ERR; } return status; } /* * Function:MFRC522_ToCard * Description:communicate between RC522 and ISO14443 * Input parameter:command--MF522 command bits * sendData--send data to card via rc522 * sendLen--send data length * backData--the return data from card * backLen--the length of return data * return:return MI_OK if successed */ uchar MFRC522_ToCard(uchar command, uchar *sendData, uchar sendLen, uchar *backData, uint *backLen) { uchar status = MI_ERR; uchar irqEn = 0x00; uchar waitIRq = 0x00; uchar lastBits; uchar n; uint i; switch (command) { case PCD_AUTHENT: //verify card password { irqEn = 0x12; waitIRq = 0x10; break; } case PCD_TRANSCEIVE: //send data in the FIFO { irqEn = 0x77; waitIRq = 0x30; break; } default: break; } Write_MFRC522(CommIEnReg, irqEn|0x80); //Allow interruption ClearBitMask(CommIrqReg, 0x80); //Clear all the interrupt bits SetBitMask(FIFOLevelReg, 0x80); //FlushBuffer=1, FIFO initilizate Write_MFRC522(CommandReg, PCD_IDLE); //NO action;cancel current command ??? //write data into FIFO for (i=0; i<sendLen; i++) { Write_MFRC522(FIFODataReg, sendData[i]); } //procceed it Write_MFRC522(CommandReg, command); if (command == PCD_TRANSCEIVE) { SetBitMask(BitFramingReg, 0x80); //StartSend=1,transmission of data starts } //waite receive data is finished i = 2000; //i should adjust according the clock, the maxium the waiting time should be 25 ms??? do { //CommIrqReg[7..0] //Set1 TxIRq RxIRq IdleIRq HiAlerIRq LoAlertIRq ErrIRq TimerIRq n = Read_MFRC522(CommIrqReg); i--; } while ((i!=0) && !(n&0x01) && !(n&waitIRq)); ClearBitMask(BitFramingReg, 0x80); //StartSend=0 if (i != 0) { if(!(Read_MFRC522(ErrorReg) & 0x1B)) //BufferOvfl Collerr CRCErr ProtecolErr { status = MI_OK; if (n & irqEn & 0x01) { status = MI_NOTAGERR; //?? } if (command == PCD_TRANSCEIVE) { n = Read_MFRC522(FIFOLevelReg); lastBits = Read_MFRC522(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; } //read the data from FIFO for (i=0; i<n; i++) { backData[i] = Read_MFRC522(FIFODataReg); } } } else { status = MI_ERR; } } //SetBitMask(ControlReg,0x80); //timer stops //Write_MFRC522(CommandReg, PCD_IDLE); return status; } /* * Function:MFRC522_Anticoll * Description:Prevent conflict, read the card serial number * Input parameter:serNum--return the 4 bytes card serial number, the 5th byte is recheck byte * return:return MI_OK if successed */ uchar MFRC522_Anticoll(uchar *serNum) { uchar status; uchar i; uchar serNumCheck=0; uint unLen; //ClearBitMask(Status2Reg, 0x08); //strSensclear //ClearBitMask(CollReg,0x80); //ValuesAfterColl Write_MFRC522(BitFramingReg, 0x00); //TxLastBists = BitFramingReg[2..0] serNum[0] = PICC_ANTICOLL; serNum[1] = 0x20; status = MFRC522_ToCard(PCD_TRANSCEIVE, serNum, 2, serNum, &unLen); if (status == MI_OK) { //Verify card serial number for (i=0; i<4; i++) { serNumCheck ^= serNum[i]; } if (serNumCheck != serNum[i]) { status = MI_ERR; } } //SetBitMask(CollReg, 0x80); //ValuesAfterColl=1 return status; } /* * Function:CalulateCRC * Description:Use MF522 to caculate CRC * Input parameter:pIndata--the CRC data need to be read,len--data length,pOutData-- the caculated result of CRC * return:Null */ void CalulateCRC(uchar *pIndata, uchar len, uchar *pOutData) { uchar i, n; ClearBitMask(DivIrqReg, 0x04); //CRCIrq = 0 SetBitMask(FIFOLevelReg, 0x80); //Clear FIFO pointer //Write_MFRC522(CommandReg, PCD_IDLE); //Write data into FIFO for (i=0; i<len; i++) { Write_MFRC522(FIFODataReg, *(pIndata+i)); } Write_MFRC522(CommandReg, PCD_CALCCRC); //waite CRC caculation to finish i = 0xFF; do { n = Read_MFRC522(DivIrqReg); i--; } while ((i!=0) && !(n&0x04)); //CRCIrq = 1 //read CRC caculation result pOutData[0] = Read_MFRC522(CRCResultRegL); pOutData[1] = Read_MFRC522(CRCResultRegM); } /* * Function:MFRC522_Write * Description:write block data * Input parameters:blockAddr--block address;writeData--Write 16 bytes data into block * return:return MI_OK if successed */ uchar MFRC522_Write(uchar blockAddr, uchar *writeData) { uchar status; uint recvBits; uchar i; uchar buff[18]; buff[0] = PICC_WRITE; buff[1] = blockAddr; CalulateCRC(buff, 2, &buff[2]); status = MFRC522_ToCard(PCD_TRANSCEIVE, buff, 4, buff, &recvBits); if ((status != MI_OK) || (recvBits != 4) || ((buff[0] & 0x0F) != 0x0A)) { status = MI_ERR; } if (status == MI_OK) { for (i=0; i<16; i++) //Write 16 bytes data into FIFO { buff[i] = *(writeData+i); } CalulateCRC(buff, 16, &buff[16]); status = MFRC522_ToCard(PCD_TRANSCEIVE, buff, 18, buff, &recvBits); if ((status != MI_OK) || (recvBits != 4) || ((buff[0] & 0x0F) != 0x0A)) { status = MI_ERR; } } return status; } /* * Function:MFRC522_Halt * Description:Command the cards into sleep mode * Input parameters:null * return:null */ void MFRC522_Halt(void) { uchar status; uint unLen; uchar buff[4]; buff[0] = PICC_HALT; buff[1] = 0; CalulateCRC(buff, 2, &buff[2]); status = MFRC522_ToCard(PCD_TRANSCEIVE, buff, 4, buff,&unLen); }
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