RC522适用,本人在arduino1.05上已测。包含rfid.h rfid.cpp,还有两个例子。
源程序如下:
- /*
- * RFID.cpp - Library to use ARDUINO RFID MODULE KIT 13.56 MHZ WITH TAGS SPI W AND R BY COOQROBOT.
- * Based on code Dr.Leong
- * Created by Miguel Balboa, Jan, 2012.
- * Released into the public domain.
- * TIDY BY YFRobot
- */
- /******************************************************************************
- * 包含文件
- ******************************************************************************/
- #include <Arduino.h>
- #include <RFID.h>
- /******************************************************************************
- * 构造 RFID
- * int chipSelectPin RFID /ENABLE pin
- ******************************************************************************/
- RFID::RFID(int chipSelectPin, int NRSTPD)
- {
- _chipSelectPin = chipSelectPin;
- _NRSTPD = NRSTPD;
- pinMode(_chipSelectPin,OUTPUT); // 设置管脚_chipSelectPin为输出并连接到模块使能口
- digitalWrite(_chipSelectPin, LOW);
- pinMode(_NRSTPD,OUTPUT); // 设置管脚NRSTPD为输出,非重置或掉电
- digitalWrite(_NRSTPD, HIGH);
- }
- /******************************************************************************
- * 用户 API
- ******************************************************************************/
- /******************************************************************************
- * 函 数 名:init
- * 功能描述:初始化RC522
- * 输入参数:无
- * 返 回 值:无
- ******************************************************************************/
- void RFID::init()
- {
- digitalWrite(_NRSTPD,HIGH);
- reset();
- //Timer: TPrescaler*TreloadVal/6.78MHz = 24ms
- writeMFRC522(TModeReg, 0x8D); //Tauto=1; f(Timer) = 6.78MHz/TPreScaler
- writeMFRC522(TPrescalerReg, 0x3E); //TModeReg[3..0] + TPrescalerReg
- writeMFRC522(TReloadRegL, 30);
- writeMFRC522(TReloadRegH, 0);
- writeMFRC522(TxAutoReg, 0x40); //100%ASK
- writeMFRC522(ModeReg, 0x3D); // CRC valor inicial de 0x6363
- //ClearBitMask(Status2Reg, 0x08); //MFCrypto1On=0
- //writeMFRC522(RxSelReg, 0x86); //RxWait = RxSelReg[5..0]
- //writeMFRC522(RFCfgReg, 0x7F); //RxGain = 48dB
- antennaOn(); //打开天线
- }
- /******************************************************************************
- * 函 数 名:reset
- * 功能描述:复位RC522
- * 输入参数:无
- * 返 回 值:无
- ******************************************************************************/
- void RFID::reset()
- {
- writeMFRC522(CommandReg, PCD_RESETPHASE);
- }
- /******************************************************************************
- * 函 数 名:writeMFRC522
- * 功能描述:向MFRC522的某一寄存器写一个字节数据
- * 输入参数:addr--寄存器地址;val--要写入的值
- * 返 回 值:无
- ******************************************************************************/
- void RFID::writeMFRC522(unsigned char addr, unsigned char val)
- {
- digitalWrite(_chipSelectPin, LOW);
- //地址格式:0XXXXXX0
- SPI.transfer((addr<<1)&0x7E);
- SPI.transfer(val);
- digitalWrite(_chipSelectPin, HIGH);
- }
- /******************************************************************************
- * 函 数 名:readMFRC522
- * 功能描述:从MFRC522的某一寄存器读一个字节数据
- * 输入参数:addr--寄存器地址
- * 返 回 值:返回读取到的一个字节数据
- ******************************************************************************/
- unsigned char RFID::readMFRC522(unsigned char addr)
- {
- unsigned char val;
- digitalWrite(_chipSelectPin, LOW);
- SPI.transfer(((addr<<1)&0x7E) | 0x80);
- val =SPI.transfer(0x00);
- digitalWrite(_chipSelectPin, HIGH);
- return val;
- }
- /******************************************************************************
- * 函 数 名:setBitMask
- * 功能描述:置RC522寄存器位
- * 输入参数:reg--寄存器地址;mask--置位值
- * 返 回 值:无
- ******************************************************************************/
- void RFID::setBitMask(unsigned char reg, unsigned char mask)
- {
- unsigned char tmp;
- tmp = readMFRC522(reg);
- writeMFRC522(reg, tmp | mask); // set bit mask
- }
- /******************************************************************************
- * 函 数 名:clearBitMask
- * 功能描述:清RC522寄存器位
- * 输入参数:reg--寄存器地址;mask--清位值
- * 返 回 值:无
- ******************************************************************************/
- void RFID::clearBitMask(unsigned char reg, unsigned char mask)
- {
- unsigned char tmp;
- tmp = readMFRC522(reg);
- writeMFRC522(reg, tmp & (~mask)); // clear bit mask
- }
- /******************************************************************************
- * 函 数 名:antennaOn
- * 功能描述: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
- * 输入参数:无
- * 返 回 值:无
- ******************************************************************************/
- void RFID::antennaOn(void)
- {
- unsigned char temp;
- temp = readMFRC522(TxControlReg);
- if (!(temp & 0x03))
- {
- setBitMask(TxControlReg, 0x03);
- }
- }
- /******************************************************************************
- * 函 数 名:antennaOff
- * 功能描述:关闭天线,每次启动或关闭天险发射之间应至少有1ms的间隔
- * 输入参数:无
- * 返 回 值:无
- ******************************************************************************/
- void RFID::antennaOff(void)
- {
- unsigned char temp;
- temp = readMFRC522(TxControlReg);
- if (!(temp & 0x03))
- {
- clearBitMask(TxControlReg, 0x03);
- }
- }
- /******************************************************************************
- * 函 数 名:calculateCRC
- * 功能描述:用MF522计算CRC
- * 输入参数:pIndata--要读数CRC的数据,len--数据长度,pOutData--计算的CRC结果
- * 返 回 值:无
- ******************************************************************************/
- void RFID::calculateCRC(unsigned char *pIndata, unsigned char len, unsigned char *pOutData)
- {
- unsigned char i, n;
- clearBitMask(DivIrqReg, 0x04); //CRCIrq = 0
- setBitMask(FIFOLevelReg, 0x80); //清FIFO指针
- //Write_MFRC522(CommandReg, PCD_IDLE);
- //向FIFO中写入数据
- for (i=0; i<len; i++)
- writeMFRC522(FIFODataReg, *(pIndata+i));
- writeMFRC522(CommandReg, PCD_CALCCRC);
- //等待CRC计算完成
- i = 0xFF;
- do
- {
- n = readMFRC522(DivIrqReg);
- i--;
- }
- while ((i!=0) && !(n&0x04)); //CRCIrq = 1
- //读取CRC计算结果
- pOutData[0] = readMFRC522(CRCResultRegL);
- pOutData[1] = readMFRC522(CRCResultRegM);
- }
- /******************************************************************************
- * 函 数 名:MFRC522ToCard
- * 功能描述:RC522和ISO14443卡通讯
- * 输入参数:command--MF522命令字,
- * sendData--通过RC522发送到卡片的数据,
- * sendLen--发送的数据长度
- * backData--接收到的卡片返回数据,
- * backLen--返回数据的位长度
- * 返 回 值:成功返回MI_OK
- ******************************************************************************/
- unsigned char RFID::MFRC522ToCard(unsigned char command, unsigned char *sendData, unsigned char sendLen, unsigned char *backData, unsigned int *backLen)
- {
- unsigned char status = MI_ERR;
- unsigned char irqEn = 0x00;
- unsigned char waitIRq = 0x00;
- unsigned char lastBits;
- unsigned char n;
- unsigned int i;
- switch (command)
- {
- case PCD_AUTHENT: //认证卡密
- {
- irqEn = 0x12;
- waitIRq = 0x10;
- break;
- }
- case PCD_TRANSCEIVE: //发送FIFO中数据
- {
- irqEn = 0x77;
- waitIRq = 0x30;
- break;
- }
- default:
- break;
- }
- writeMFRC522(CommIEnReg, irqEn|0x80); //允许中断请求
- clearBitMask(CommIrqReg, 0x80); //清除所有中断请求位
- setBitMask(FIFOLevelReg, 0x80); //FlushBuffer=1, FIFO初始化
- writeMFRC522(CommandReg, PCD_IDLE); //无动作,取消当前命令
- //向FIFO中写入数据
- for (i=0; i<sendLen; i++)
- writeMFRC522(FIFODataReg, sendData[i]);
- //执行命令
- writeMFRC522(CommandReg, command);
- if (command == PCD_TRANSCEIVE)
- setBitMask(BitFramingReg, 0x80); //StartSend=1,transmission of data starts
- //等待接收数据完成
- i = 2000; //i根据时钟频率调整,操作M1卡最大等待时间25ms
- do
- {
- //CommIrqReg[7..0]
- //Set1 TxIRq RxIRq IdleIRq HiAlerIRq LoAlertIRq ErrIRq TimerIRq
- n = readMFRC522(CommIrqReg);
- i--;
- }
- while ((i!=0) && !(n&0x01) && !(n&waitIRq));
- clearBitMask(BitFramingReg, 0x80); //StartSend=0
- if (i != 0)
- {
- if(!(readMFRC522(ErrorReg) & 0x1B)) //BufferOvfl Collerr CRCErr ProtecolErr
- {
- status = MI_OK;
- if (n & irqEn & 0x01)
- status = MI_NOTAGERR; //??
- if (command == PCD_TRANSCEIVE)
- {
- n = readMFRC522(FIFOLevelReg);
- lastBits = readMFRC522(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;
- //读取FIFO中接收到的数据
- for (i=0; i<n; i++)
- backData[i] = readMFRC522(FIFODataReg);
- }
- }
- else
- status = MI_ERR;
- }
- //SetBitMask(ControlReg,0x80); //timer stops
- //Write_MFRC522(CommandReg, PCD_IDLE);
- return status;
- }
- /******************************************************************************
- * 函 数 名:findCard
- * 功能描述:寻卡,读取卡类型号
- * 输入参数:reqMode--寻卡方式,
- * TagType--返回卡片类型
- * 0x4400 = Mifare_UltraLight
- * 0x0400 = Mifare_One(S50)
- * 0x0200 = Mifare_One(S70)
- * 0x0800 = Mifare_Pro(X)
- * 0x4403 = Mifare_DESFire
- * 返 回 值:成功返回MI_OK
- ******************************************************************************/
- unsigned char RFID::findCard(unsigned char reqMode, unsigned char *TagType)
- {
- unsigned char status;
- unsigned int backBits; //接收到的数据位数
- writeMFRC522(BitFramingReg, 0x07); //TxLastBists = BitFramingReg[2..0] ???
- TagType[0] = reqMode;
- status = MFRC522ToCard(PCD_TRANSCEIVE, TagType, 1, TagType, &backBits);
- if ((status != MI_OK) || (backBits != 0x10))
- status = MI_ERR;
- return status;
- }
- /******************************************************************************
- * 函 数 名:anticoll
- * 功能描述:防冲突检测,读取选中卡片的卡序列号
- * 输入参数:serNum--返回4字节卡序列号,第5字节为校验字节
- * 返 回 值:成功返回MI_OK
- ******************************************************************************/
- unsigned char RFID::anticoll(unsigned char *serNum)
- {
- unsigned char status;
- unsigned char i;
- unsigned char serNumCheck=0;
- unsigned int unLen;
- clearBitMask(Status2Reg, 0x08); //TempSensclear
- clearBitMask(CollReg,0x80); //ValuesAfterColl
- writeMFRC522(BitFramingReg, 0x00); //TxLastBists = BitFramingReg[2..0]
- serNum[0] = PICC_ANTICOLL;
- serNum[1] = 0x20;
- status = MFRC522ToCard(PCD_TRANSCEIVE, serNum, 2, serNum, &unLen);
- if (status == MI_OK)
- {
- //校验卡序列号
- for (i=0; i<4; i++){
- *(serNum+i) = serNum[i];
- serNumCheck ^= serNum[i];
- }
- if (serNumCheck != serNum[i]){
- status = MI_ERR;
- }
- }
- setBitMask(CollReg, 0x80); //ValuesAfterColl=1
- return status;
- }
- /******************************************************************************
- * 函 数 名:auth
- * 功能描述:验证卡片密码
- * 输入参数:authMode--密码验证模式
- * 0x60 = 验证A密钥
- * 0x61 = 验证B密钥
- * BlockAddr--块地址
- * Sectorkey--扇区密码
- * serNum--卡片序列号,4字节
- * 返 回 值:成功返回MI_OK
- ******************************************************************************/
- unsigned char RFID::auth(unsigned char authMode, unsigned char BlockAddr, unsigned char *Sectorkey, unsigned char *serNum)
- {
- unsigned char status;
- unsigned int recvBits;
- unsigned char i;
- unsigned char buff[12];
- //验证指令+块地址+扇区密码+卡序列号
- buff[0] = authMode;
- buff[1] = BlockAddr;
- for (i=0; i<6; i++)
- buff[i+2] = *(Sectorkey+i);
- for (i=0; i<4; i++)
- buff[i+8] = *(serNum+i);
-
- status = MFRC522ToCard(PCD_AUTHENT, buff, 12, buff, &recvBits);
- if ((status != MI_OK) || (!(readMFRC522(Status2Reg) & 0x08)))
- status = MI_ERR;
- return status;
- }
- /******************************************************************************
- * 函 数 名:read
- * 功能描述:读块数据
- * 输入参数:blockAddr--块地址;recvData--读出的块数据
- * 返 回 值:成功返回MI_OK
- ******************************************************************************/
- unsigned char RFID::read(unsigned char blockAddr, unsigned char *recvData)
- {
- unsigned char status;
- unsigned int unLen;
- recvData[0] = PICC_READ;
- recvData[1] = blockAddr;
- calculateCRC(recvData,2, &recvData[2]);
- status = MFRC522ToCard(PCD_TRANSCEIVE, recvData, 4, recvData, &unLen);
- if ((status != MI_OK) || (unLen != 0x90))
- status = MI_ERR;
- return status;
- }
- /******************************************************************************
- * 函 数 名:write
- * 功能描述:写块数据
- * 输入参数:blockAddr--块地址;writeData--向块写16字节数据
- * 返 回 值:成功返回MI_OK
- ******************************************************************************/
- unsigned char RFID::write(unsigned char blockAddr, unsigned char *writeData)
- {
- unsigned char status;
- unsigned int recvBits;
- unsigned char i;
- unsigned char buff[18];
- buff[0] = PICC_WRITE;
- buff[1] = blockAddr;
- calculateCRC(buff, 2, &buff[2]);
- status = MFRC522ToCard(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++) //?FIFO?16Byte?? Datos a la FIFO 16Byte escribir
- buff[i] = *(writeData+i);
-
- calculateCRC(buff, 16, &buff[16]);
- status = MFRC522ToCard(PCD_TRANSCEIVE, buff, 18, buff, &recvBits);
- if ((status != MI_OK) || (recvBits != 4) || ((buff[0] & 0x0F) != 0x0A))
- status = MI_ERR;
- }
- return status;
- }
- /******************************************************************************
- * 函 数 名:selectTag
- * 功能描述:选卡,读取卡存储器容量
- * 输入参数:serNum--传入卡序列号
- * 返 回 值:成功返回卡容量
- ******************************************************************************/
- unsigned char RFID::selectTag(unsigned char *serNum)
- {
- unsigned char i;
- unsigned char status;
- unsigned char size;
- unsigned int recvBits;
- unsigned char buffer[9];
- //ClearBitMask(Status2Reg, 0x08); //MFCrypto1On=0
- buffer[0] = PICC_SElECTTAG;
- buffer[1] = 0x70;
- for (i=0; i<5; i++)
- buffer[i+2] = *(serNum+i);
- calculateCRC(buffer, 7, &buffer[7]);
-
- status = MFRC522ToCard(PCD_TRANSCEIVE, buffer, 9, buffer, &recvBits);
- if ((status == MI_OK) && (recvBits == 0x18))
- size = buffer[i];
- else
- size = 0;
- return size;
- }
- /******************************************************************************
- * 函 数 名:Halt
- * 功能描述:命令卡片进入休眠状态
- * 输入参数:无
- * 返 回 值:无
- ******************************************************************************/
- void RFID::halt()
- {
- unsigned char status;
- unsigned int unLen;
- unsigned char buff[4];
- buff[0] = PICC_HALT;
- buff[1] = 0;
- calculateCRC(buff, 2, &buff[2]);
- status = MFRC522ToCard(PCD_TRANSCEIVE, buff, 4, buff,&unLen);
- }
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