546 lines
16 KiB
C++
546 lines
16 KiB
C++
/*
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* RFID.cpp - Library to use ARDUINO RFID MODULE KIT 13.56 MHZ WITH TAGS SPI W AND R BY COOQROBOT.
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* Based on code Dr.Leong ( WWW.B2CQSHOP.COM )
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* Created by Miguel Balboa, Jan, 2012.
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* Released into the public domain.
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* 整理者：极客工坊bg1lsy (lsy@sogou.com)
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* 整理时间：2013.05.25
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*/
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/******************************************************************************
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* 包含文件
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******************************************************************************/
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#include <Arduino.h>
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#include <RFID.h>
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/******************************************************************************
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* 构造 RFID
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* int chipSelectPin RFID /ENABLE pin
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******************************************************************************/
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RFID::RFID(int chipSelectPin, int NRSTPD)
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{
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_chipSelectPin = chipSelectPin;
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_NRSTPD = NRSTPD;
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pinMode(_chipSelectPin,OUTPUT); // 设置管脚_chipSelectPin为输出并连接到模块使能口
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digitalWrite(_chipSelectPin, LOW);
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pinMode(_NRSTPD,OUTPUT); // 设置管脚NRSTPD为输出，非重置或掉电
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digitalWrite(_NRSTPD, HIGH);
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}
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/******************************************************************************
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* 用户 API
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******************************************************************************/
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/******************************************************************************
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* 函 数 名：isCard
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* 功能描述：寻卡
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* 输入参数：无
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* 返 回 值：成功返回ture 失败返回false
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******************************************************************************/
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bool RFID::isCard()
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{
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unsigned char status;
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unsigned char str[MAX_LEN];
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status = MFRC522Request(PICC_REQIDL, str);
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if (status == MI_OK)
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return true;
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else
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return false;
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}
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/******************************************************************************
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* 函 数 名：readCardSerial
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* 功能描述：返回卡的序列号 4字节
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* 输入参数：无
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* 返 回 值：成功返回ture 失败返回false
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******************************************************************************/
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bool RFID::readCardSerial(){
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unsigned char status;
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unsigned char str[MAX_LEN];
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// 防冲撞，返回卡的序列号 4字节，存入serNum中
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status = anticoll(str);
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memcpy(serNum, str, 5);
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if (status == MI_OK)
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return true;
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else
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return false;
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}
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/******************************************************************************
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* 函 数 名：init
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* 功能描述：初始化RC522
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* 输入参数：无
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* 返 回 值：无
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******************************************************************************/
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void RFID::init()
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{
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digitalWrite(_NRSTPD,HIGH);
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reset();
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//Timer: TPrescaler*TreloadVal/6.78MHz = 24ms
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writeMFRC522(TModeReg, 0x8D); //Tauto=1; f(Timer) = 6.78MHz/TPreScaler
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writeMFRC522(TPrescalerReg, 0x3E); //TModeReg[3..0] + TPrescalerReg
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writeMFRC522(TReloadRegL, 30);
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writeMFRC522(TReloadRegH, 0);
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writeMFRC522(TxAutoReg, 0x40); //100%ASK
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writeMFRC522(ModeReg, 0x3D); // CRC valor inicial de 0x6363
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//ClearBitMask(Status2Reg, 0x08); //MFCrypto1On=0
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//writeMFRC522(RxSelReg, 0x86); //RxWait = RxSelReg[5..0]
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//writeMFRC522(RFCfgReg, 0x7F); //RxGain = 48dB
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antennaOn(); //打开天线
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}
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/******************************************************************************
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* 函 数 名：reset
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* 功能描述：复位RC522
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* 输入参数：无
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* 返 回 值：无
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******************************************************************************/
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void RFID::reset()
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{
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writeMFRC522(CommandReg, PCD_RESETPHASE);
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}
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/******************************************************************************
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* 函 数 名：writeMFRC522
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* 功能描述：向MFRC522的某一寄存器写一个字节数据
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* 输入参数：addr--寄存器地址；val--要写入的值
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* 返 回 值：无
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******************************************************************************/
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void RFID::writeMFRC522(unsigned char addr, unsigned char val)
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{
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digitalWrite(_chipSelectPin, LOW);
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//地址格式：0XXXXXX0
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SPI.transfer((addr<<1)&0x7E);
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SPI.transfer(val);
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digitalWrite(_chipSelectPin, HIGH);
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}
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/******************************************************************************
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* 函 数 名：readMFRC522
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* 功能描述：从MFRC522的某一寄存器读一个字节数据
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* 输入参数：addr--寄存器地址
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* 返 回 值：返回读取到的一个字节数据
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******************************************************************************/
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unsigned char RFID::readMFRC522(unsigned char addr)
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{
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unsigned char val;
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digitalWrite(_chipSelectPin, LOW);
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SPI.transfer(((addr<<1)&0x7E) | 0x80);
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val =SPI.transfer(0x00);
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digitalWrite(_chipSelectPin, HIGH);
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return val;
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}
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/******************************************************************************
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* 函 数 名：setBitMask
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* 功能描述：置RC522寄存器位
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* 输入参数：reg--寄存器地址;mask--置位值
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* 返 回 值：无
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******************************************************************************/
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void RFID::setBitMask(unsigned char reg, unsigned char mask)
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{
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unsigned char tmp;
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tmp = readMFRC522(reg);
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writeMFRC522(reg, tmp | mask); // set bit mask
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}
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/******************************************************************************
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* 函 数 名：clearBitMask
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* 功能描述：清RC522寄存器位
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* 输入参数：reg--寄存器地址;mask--清位值
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* 返 回 值：无
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******************************************************************************/
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void RFID::clearBitMask(unsigned char reg, unsigned char mask)
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{
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unsigned char tmp;
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tmp = readMFRC522(reg);
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writeMFRC522(reg, tmp & (~mask)); // clear bit mask
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}
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/******************************************************************************
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* 函 数 名：antennaOn
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* 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
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* 输入参数：无
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* 返 回 值：无
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******************************************************************************/
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void RFID::antennaOn(void)
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{
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unsigned char temp;
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temp = readMFRC522(TxControlReg);
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if (!(temp & 0x03))
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{
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setBitMask(TxControlReg, 0x03);
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}
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}
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/******************************************************************************
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* 函 数 名：antennaOff
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* 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
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* 输入参数：无
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* 返 回 值：无
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******************************************************************************/
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void RFID::antennaOff(void)
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{
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unsigned char temp;
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temp = readMFRC522(TxControlReg);
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if (!(temp & 0x03))
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{
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clearBitMask(TxControlReg, 0x03);
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}
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}
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/******************************************************************************
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* 函 数 名：calculateCRC
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* 功能描述：用MF522计算CRC
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* 输入参数：pIndata--要读数CRC的数据，len--数据长度，pOutData--计算的CRC结果
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* 返 回 值：无
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******************************************************************************/
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void RFID::calculateCRC(unsigned char *pIndata, unsigned char len, unsigned char *pOutData)
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{
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unsigned char i, n;
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clearBitMask(DivIrqReg, 0x04); //CRCIrq = 0
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setBitMask(FIFOLevelReg, 0x80); //清FIFO指针
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//Write_MFRC522(CommandReg, PCD_IDLE);
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//向FIFO中写入数据
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for (i=0; i<len; i++)
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writeMFRC522(FIFODataReg, *(pIndata+i));
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writeMFRC522(CommandReg, PCD_CALCCRC);
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//等待CRC计算完成
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i = 0xFF;
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do
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{
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n = readMFRC522(DivIrqReg);
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i--;
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}
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while ((i!=0) && !(n&0x04)); //CRCIrq = 1
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//读取CRC计算结果
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pOutData[0] = readMFRC522(CRCResultRegL);
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pOutData[1] = readMFRC522(CRCResultRegM);
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}
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/******************************************************************************
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* 函 数 名：MFRC522ToCard
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* 功能描述：RC522和ISO14443卡通讯
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* 输入参数：command--MF522命令字，
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* sendData--通过RC522发送到卡片的数据,
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* sendLen--发送的数据长度
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* backData--接收到的卡片返回数据，
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* backLen--返回数据的位长度
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* 返 回 值：成功返回MI_OK
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******************************************************************************/
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unsigned char RFID::MFRC522ToCard(unsigned char command, unsigned char *sendData, unsigned char sendLen, unsigned char *backData, unsigned int *backLen)
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{
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unsigned char status = MI_ERR;
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unsigned char irqEn = 0x00;
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unsigned char waitIRq = 0x00;
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unsigned char lastBits;
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unsigned char n;
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unsigned int i;
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switch (command)
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{
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case PCD_AUTHENT: //认证卡密
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{
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irqEn = 0x12;
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waitIRq = 0x10;
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break;
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}
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case PCD_TRANSCEIVE: //发送FIFO中数据
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{
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irqEn = 0x77;
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waitIRq = 0x30;
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break;
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}
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default:
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break;
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}
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writeMFRC522(CommIEnReg, irqEn|0x80); //允许中断请求
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clearBitMask(CommIrqReg, 0x80); //清除所有中断请求位
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setBitMask(FIFOLevelReg, 0x80); //FlushBuffer=1, FIFO初始化
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writeMFRC522(CommandReg, PCD_IDLE); //无动作，取消当前命令
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//向FIFO中写入数据
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for (i=0; i<sendLen; i++)
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writeMFRC522(FIFODataReg, sendData[i]);
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//执行命令
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writeMFRC522(CommandReg, command);
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if (command == PCD_TRANSCEIVE)
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setBitMask(BitFramingReg, 0x80); //StartSend=1,transmission of data starts
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//等待接收数据完成
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i = 2000; //i根据时钟频率调整，操作M1卡最大等待时间25ms
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do
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{
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//CommIrqReg[7..0]
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//Set1 TxIRq RxIRq IdleIRq HiAlerIRq LoAlertIRq ErrIRq TimerIRq
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n = readMFRC522(CommIrqReg);
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i--;
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}
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while ((i!=0) && !(n&0x01) && !(n&waitIRq));
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clearBitMask(BitFramingReg, 0x80); //StartSend=0
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if (i != 0)
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{
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if(!(readMFRC522(ErrorReg) & 0x1B)) //BufferOvfl Collerr CRCErr ProtecolErr
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{
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status = MI_OK;
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if (n & irqEn & 0x01)
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status = MI_NOTAGERR; //??
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if (command == PCD_TRANSCEIVE)
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{
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n = readMFRC522(FIFOLevelReg);
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lastBits = readMFRC522(ControlReg) & 0x07;
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if (lastBits)
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*backLen = (n-1)*8 + lastBits;
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else
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*backLen = n*8;
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if (n == 0)
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n = 1;
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if (n > MAX_LEN)
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n = MAX_LEN;
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//读取FIFO中接收到的数据
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for (i=0; i<n; i++)
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backData[i] = readMFRC522(FIFODataReg);
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}
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}
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else
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status = MI_ERR;
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}
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//SetBitMask(ControlReg,0x80); //timer stops
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//Write_MFRC522(CommandReg, PCD_IDLE);
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return status;
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}
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/******************************************************************************
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* 函 数 名：MFRC522Request
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* 功能描述：寻卡，读取卡类型号
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* 输入参数：reqMode--寻卡方式，
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* TagType--返回卡片类型
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* 0x4400 = Mifare_UltraLight
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* 0x0400 = Mifare_One(S50)
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* 0x0200 = Mifare_One(S70)
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* 0x0800 = Mifare_Pro(X)
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* 0x4403 = Mifare_DESFire
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* 返 回 值：成功返回MI_OK
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******************************************************************************/
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unsigned char RFID::MFRC522Request(unsigned char reqMode, unsigned char *TagType)
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{
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unsigned char status;
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unsigned int backBits; //接收到的数据位数
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writeMFRC522(BitFramingReg, 0x07); //TxLastBists = BitFramingReg[2..0] ???
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TagType[0] = reqMode;
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status = MFRC522ToCard(PCD_TRANSCEIVE, TagType, 1, TagType, &backBits);
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if ((status != MI_OK) || (backBits != 0x10))
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status = MI_ERR;
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return status;
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}
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/******************************************************************************
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* 函 数 名：anticoll
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* 功能描述：防冲突检测，读取选中卡片的卡序列号
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* 输入参数：serNum--返回4字节卡序列号,第5字节为校验字节
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* 返 回 值：成功返回MI_OK
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******************************************************************************/
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unsigned char RFID::anticoll(unsigned char *serNum)
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{
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unsigned char status;
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unsigned char i;
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unsigned char serNumCheck=0;
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unsigned int unLen;
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//ClearBitMask(Status2Reg, 0x08); //TempSensclear
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//ClearBitMask(CollReg,0x80); //ValuesAfterColl
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writeMFRC522(BitFramingReg, 0x00); //TxLastBists = BitFramingReg[2..0]
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serNum[0] = PICC_ANTICOLL;
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serNum[1] = 0x20;
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status = MFRC522ToCard(PCD_TRANSCEIVE, serNum, 2, serNum, &unLen);
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if (status == MI_OK)
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{
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//校验卡序列号
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for (i=0; i<4; i++)
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serNumCheck ^= serNum[i];
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if (serNumCheck != serNum[i])
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status = MI_ERR;
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}
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//SetBitMask(CollReg, 0x80); //ValuesAfterColl=1
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return status;
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}
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/******************************************************************************
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* 函 数 名：auth
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* 功能描述：验证卡片密码
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* 输入参数：authMode--密码验证模式
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* 0x60 = 验证A密钥
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* 0x61 = 验证B密钥
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* BlockAddr--块地址
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* Sectorkey--扇区密码
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* serNum--卡片序列号，4字节
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* 返 回 值：成功返回MI_OK
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******************************************************************************/
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unsigned char RFID::auth(unsigned char authMode, unsigned char BlockAddr, unsigned char *Sectorkey, unsigned char *serNum)
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{
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unsigned char status;
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unsigned int recvBits;
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unsigned char i;
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unsigned char buff[12];
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//验证指令+块地址＋扇区密码＋卡序列号
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buff[0] = authMode;
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buff[1] = BlockAddr;
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for (i=0; i<6; i++)
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buff[i+2] = *(Sectorkey+i);
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for (i=0; i<4; i++)
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buff[i+8] = *(serNum+i);
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status = MFRC522ToCard(PCD_AUTHENT, buff, 12, buff, &recvBits);
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if ((status != MI_OK) || (!(readMFRC522(Status2Reg) & 0x08)))
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status = MI_ERR;
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return status;
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}
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/******************************************************************************
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* 函 数 名：read
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* 功能描述：读块数据
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* 输入参数：blockAddr--块地址;recvData--读出的块数据
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* 返 回 值：成功返回MI_OK
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******************************************************************************/
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unsigned char RFID::read(unsigned char blockAddr, unsigned char *recvData)
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{
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unsigned char status;
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unsigned int unLen;
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recvData[0] = PICC_READ;
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recvData[1] = blockAddr;
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calculateCRC(recvData,2, &recvData[2]);
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status = MFRC522ToCard(PCD_TRANSCEIVE, recvData, 4, recvData, &unLen);
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if ((status != MI_OK) || (unLen != 0x90))
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status = MI_ERR;
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return status;
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}
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/******************************************************************************
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* 函 数 名：write
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* 功能描述：写块数据
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* 输入参数：blockAddr--块地址;writeData--向块写16字节数据
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* 返 回 值：成功返回MI_OK
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******************************************************************************/
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unsigned char RFID::write(unsigned char blockAddr, unsigned char *writeData)
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{
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unsigned char status;
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unsigned int recvBits;
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unsigned char i;
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unsigned char buff[18];
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buff[0] = PICC_WRITE;
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buff[1] = blockAddr;
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calculateCRC(buff, 2, &buff[2]);
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status = MFRC522ToCard(PCD_TRANSCEIVE, buff, 4, buff, &recvBits);
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if ((status != MI_OK) || (recvBits != 4) || ((buff[0] & 0x0F) != 0x0A))
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status = MI_ERR;
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if (status == MI_OK)
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{
|
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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[0];
|
||
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);
|
||
} |