模板:Arduino:MFRC522-LoadCell
出自 陳富國維基館
接腳方式
MFRC522接腳 ARDUINO接腳 SDA 10 SDK 13 MOSI 11 MISO 12 GND GND RST 5 3.3V 3V3
程式碼
/*
* 文 件 名：RFID.pde
* 創 建 者：Dr.Leong ( WWW.B2CQSHOP.COM )
* 創建日期：2011.09.19
* 修 改 者：
* 修改日期：
* 功能描述：Mifare1 尋卡→防沖突→選卡→讀寫 接口
*/
// the sensor communicates using SPI, so include the library:
#include <SPI.h>
#define uchar unsigned char
#define uint unsigned int
//數組最大長度
#define MAX_LEN 16
/////////////////////////////////////////////////////////////////////
//set the pin
/////////////////////////////////////////////////////////////////////
const int chipSelectPin = 10;
const int NRSTPD = 5;
//MF522命令字
#define PCD_IDLE 0x00 //NO action;取消當前命令
#define PCD_AUTHENT 0x0E //驗證密鑰
#define PCD_RECEIVE 0x08 //接收數據
#define PCD_TRANSMIT 0x04 //發送數據
#define PCD_TRANSCEIVE 0x0C //發送並接收數據
#define PCD_RESETPHASE 0x0F //復位
#define PCD_CALCCRC 0x03 //CRC計算
//Mifare_One卡片命令字
#define PICC_REQIDL 0x26 //尋天線區內未進入休眠狀態
#define PICC_REQALL 0x52 //尋天線區內全部卡
#define PICC_ANTICOLL 0x93 //防沖撞
#define PICC_SElECTTAG 0x93 //選卡
#define PICC_AUTHENT1A 0x60 //驗證A密鑰
#define PICC_AUTHENT1B 0x61 //驗證B密鑰
#define PICC_READ 0x30 //讀塊
#define PICC_WRITE 0xA0 //寫塊
#define PICC_DECREMENT 0xC0 //扣款
#define PICC_INCREMENT 0xC1 //充值
#define PICC_RESTORE 0xC2 //調塊數據到緩沖區
#define PICC_TRANSFER 0xB0 //保存緩沖區中數據
#define PICC_HALT 0x50 //休眠
//和MF522通訊時返回的錯誤代碼
#define MI_OK 0
#define MI_NOTAGERR 1
#define MI_ERR 2
//------------------MFRC522寄存器---------------
//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字節卡序列號，第5字節為校驗字節
uchar serNum[5];
uchar writeData[16]={0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100}; //初始化 100元錢
uchar moneyConsume = 18 ; //消費18元
uchar moneyAdd = 10 ; //充值10元
//扇區A密碼，16個扇區，每個扇區密碼6Byte
uchar sectorKeyA[16][16] = {{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
//{0x19, 0x84, 0x07, 0x15, 0x76, 0x14},
{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
};
uchar sectorNewKeyA[16][16] = {{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xff,0x07,0x80,0x69, 0x19,0x84,0x07,0x15,0x76,0x14},
//you can set another ket , such as " 0x19, 0x84, 0x07, 0x15, 0x76, 0x14 "
//{0x19, 0x84, 0x07, 0x15, 0x76, 0x14, 0xff,0x07,0x80,0x69, 0x19,0x84,0x07,0x15,0x76,0x14},
// but when loop, please set the sectorKeyA, the same key, so that RFID module can read the card
{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xff,0x07,0x80,0x69, 0x19,0x33,0x07,0x15,0x34,0x14},
};
char inputBuffer[20];
void setup() {
Serial.begin(9600); // RFID reader SOUT pin connected to Serial RX pin at 2400bps
// start the SPI library:
SPI.begin();
pinMode(chipSelectPin,OUTPUT); // Set digital pin 10 as OUTPUT to connect it to the RFID /ENABLE pin
digitalWrite(chipSelectPin, LOW); // Activate the RFID reader
pinMode(NRSTPD,OUTPUT); // Set digital pin 10 , Not Reset and Power-down
digitalWrite(NRSTPD, HIGH);
MFRC522_Init();
}
void loop()
{
uchar i,tmp;
uchar status;
uchar str[MAX_LEN];
uchar RC_size;
uchar blockAddr; //選擇操作的塊地址0～63
String mynum = "";
while (Serial.available() > 0) {
char c = Serial.read();
Serial.print(c);
}
//尋卡，返回卡類型
status = MFRC522_Request(PICC_REQIDL, str);
if (status == MI_OK)
{
//Serial.println("Card detected");
//Serial.print(str[0],BIN);
//Serial.print(" , ");
//Serial.print(str[1],BIN);
//Serial.println(" ");
}
//防沖撞，返回卡的序列號 4字節
status = MFRC522_Anticoll(str);
memcpy(serNum, str, 5);
if (status == MI_OK)
{
//buzzer
analogWrite(3,20);
delay(500);
analogWrite(3,0);
delay(500);
Serial.println("The card's number is : ");
Serial.print(serNum[0]);
Serial.print(" , ");
Serial.print(serNum[1],BIN);
Serial.print(" , ");
Serial.print(serNum[2],BIN);
Serial.print(" , ");
Serial.print(serNum[3],BIN);
Serial.print(" , ");
Serial.print(serNum[4],BIN);
Serial.println(" ");
// Should really check all pairs, but for now we'll just use the first
// if(serNum[0] == 88) {
// Serial.println("Hello Grant");
// } else if(serNum[0] == 173) {
// Serial.println("Hello David");
// }
delay(1000);
}
//Serial.println(" ");
MFRC522_Halt(); //命令卡片進入休眠狀態
}
/*
* 函 數 名：Write_MFRC5200
* 功能描述：向MFRC522的某一寄存器寫一個字節數據
* 輸入參數：addr--寄存器地址﹔val--要寫入的值
* 返 回 值：無
*/
void Write_MFRC522(uchar addr, uchar val)
{
digitalWrite(chipSelectPin, LOW);
//地址格式：0XXXXXX0
SPI.transfer((addr<<1)&0x7E);
SPI.transfer(val);
digitalWrite(chipSelectPin, HIGH);
}
/*
* 函 數 名：Read_MFRC522
* 功能描述：從MFRC522的某一寄存器讀一個字節數據
* 輸入參數：addr--寄存器地址
* 返 回 值：返回讀取到的一個字節數據
*/
uchar Read_MFRC522(uchar addr)
{
uchar val;
digitalWrite(chipSelectPin, LOW);
//地址格式：1XXXXXX0
SPI.transfer(((addr<<1)&0x7E) | 0x80);
val =SPI.transfer(0x00);
digitalWrite(chipSelectPin, HIGH);
return val;
}
/*
* 函 數 名：SetBitMask
* 功能描述：置RC522寄存器位
* 輸入參數：reg--寄存器地址;mask--置位值
* 返 回 值：無
*/
void SetBitMask(uchar reg, uchar mask)
{
uchar tmp;
tmp = Read_MFRC522(reg);
Write_MFRC522(reg, tmp | mask); // set bit mask
}
/*
* 函 數 名：ClearBitMask
* 功能描述：清RC522寄存器位
* 輸入參數：reg--寄存器地址;mask--清位值
* 返 回 值：無
*/
void ClearBitMask(uchar reg, uchar mask)
{
uchar tmp;
tmp = Read_MFRC522(reg);
Write_MFRC522(reg, tmp & (~mask)); // clear bit mask
}
/*
* 函 數 名：AntennaOn
* 功能描述：開啟天線,每次啟動或關閉天險發射之間應至少有1ms的間隔
* 輸入參數：無
* 返 回 值：無
*/
void AntennaOn(void)
{
uchar temp;
temp = Read_MFRC522(TxControlReg);
if (!(temp & 0x03))
{
SetBitMask(TxControlReg, 0x03);
}
}
/*
* 函 數 名：AntennaOff
* 功能描述：關閉天線,每次啟動或關閉天險發射之間應至少有1ms的間隔
* 輸入參數：無
* 返 回 值：無
*/
void AntennaOff(void)
{
ClearBitMask(TxControlReg, 0x03);
}
/*
* 函 數 名：ResetMFRC522
* 功能描述：復位RC522
* 輸入參數：無
* 返 回 值：無
*/
void MFRC522_Reset(void)
{
Write_MFRC522(CommandReg, PCD_RESETPHASE);
}
/*
* 函 數 名：InitMFRC522
* 功能描述：初始化RC522
* 輸入參數：無
* 返 回 值：無
*/
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初始值0x6363 ???
//ClearBitMask(Status2Reg, 0x08); //MFCrypto1On=0
//Write_MFRC522(RxSelReg, 0x86); //RxWait = RxSelReg[5..0]
//Write_MFRC522(RFCfgReg, 0x7F); //RxGain = 48dB
AntennaOn(); //打開天線
}
/*
* 函 數 名：MFRC522_Request
* 功能描述：尋卡，讀取卡類型號
* 輸入參數：reqMode--尋卡方式，
* TagType--返回卡片類型
* 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
*/
uchar MFRC522_Request(uchar reqMode, uchar *TagType)
{
uchar status;
uint backBits; //接收到的數據位數
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;
}
/*
* 函 數 名：MFRC522_ToCard
* 功能描述：RC522和ISO14443卡通訊
* 輸入參數：command--MF522命令字，
* sendData--通過RC522發送到卡片的數據,
* sendLen--發送的數據長度
* backData--接收到的卡片返回數據，
* backLen--返回數據的位長度
* 返 回 值：成功返回MI_OK
*/
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: //認證卡密
{
irqEn = 0x12;
waitIRq = 0x10;
break;
}
case PCD_TRANSCEIVE: //發送FIFO中數據
{
irqEn = 0x77;
waitIRq = 0x30;
break;
}
default:
break;
}
Write_MFRC522(CommIEnReg, irqEn|0x80); //允許中斷請求
ClearBitMask(CommIrqReg, 0x80); //清除所有中斷請求位
SetBitMask(FIFOLevelReg, 0x80); //FlushBuffer=1, FIFO初始化
Write_MFRC522(CommandReg, PCD_IDLE); //NO action;取消當前命令 ???
//向FIFO中寫入數據
for (i=0; i<sendLen; i++)
{
Write_MFRC522(FIFODataReg, sendData[i]);
}
//執行命令
Write_MFRC522(CommandReg, command);
if (command == PCD_TRANSCEIVE)
{
SetBitMask(BitFramingReg, 0x80); //StartSend=1,transmission of data starts
}
//等待接收數據完成
i = 2000; //i根據時鐘頻率調整，操作M1卡最大等待時間25ms ???
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;
}
//讀取FIFO中接收到的數據
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;
}
/*
* 函 數 名：MFRC522_Anticoll
* 功能描述：防沖突檢測，讀取選中卡片的卡序列號
* 輸入參數：serNum--返回4字節卡序列號,第5字節為校驗字節
* 返 回 值：成功返回MI_OK
*/
uchar MFRC522_Anticoll(uchar *serNum)
{
uchar status;
uchar i;
uchar serNumCheck=0;
uint unLen;
//ClearBitMask(Status2Reg, 0x08); //TempSensclear
//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)
{
//校驗卡序列號
for (i=0; i<4; i++)
{
serNumCheck ^= serNum[i];
}
if (serNumCheck != serNum[i])
{
status = MI_ERR;
}
}
//SetBitMask(CollReg, 0x80); //ValuesAfterColl=1
return status;
}
/*
* 函 數 名：CalulateCRC
* 功能描述：用MF522計算CRC
* 輸入參數：pIndata--要讀數CRC的數據，len--數據長度，pOutData--計算的CRC結果
* 返 回 值：無
*/
void CalulateCRC(uchar *pIndata, uchar len, uchar *pOutData)
{
uchar i, n;
ClearBitMask(DivIrqReg, 0x04); //CRCIrq = 0
SetBitMask(FIFOLevelReg, 0x80); //清FIFO指針
//Write_MFRC522(CommandReg, PCD_IDLE);
//向FIFO中寫入數據
for (i=0; i<len; i++)
{
Write_MFRC522(FIFODataReg, *(pIndata+i));
}
Write_MFRC522(CommandReg, PCD_CALCCRC);
//等待CRC計算完成
i = 0xFF;
do
{
n = Read_MFRC522(DivIrqReg);
i--;
}
while ((i!=0) && !(n&0x04)); //CRCIrq = 1
//讀取CRC計算結果
pOutData[0] = Read_MFRC522(CRCResultRegL);
pOutData[1] = Read_MFRC522(CRCResultRegM);
}
/*
* 函 數 名：MFRC522_SelectTag
* 功能描述：選卡，讀取卡存儲器容量
* 輸入參數：serNum--傳入卡序列號
* 返 回 值：成功返回卡容量
*/
uchar MFRC522_SelectTag(uchar *serNum)
{
uchar i;
uchar status;
uchar size;
uint recvBits;
uchar 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);
}
CalulateCRC(buffer, 7, &buffer[7]); //??
status = MFRC522_ToCard(PCD_TRANSCEIVE, buffer, 9, buffer, &recvBits);
if ((status == MI_OK) && (recvBits == 0x18))
{
size = buffer[0];
}
else
{
size = 0;
}
return size;
}
/*
* 函 數 名：MFRC522_Auth
* 功能描述：驗證卡片密碼
* 輸入參數：authMode--密碼驗證模式
0x60 = 驗證A密鑰
0x61 = 驗證B密鑰
BlockAddr--塊地址
Sectorkey--扇區密碼
serNum--卡片序列號，4字節
* 返 回 值：成功返回MI_OK
*/
uchar MFRC522_Auth(uchar authMode, uchar BlockAddr, uchar *Sectorkey, uchar *serNum)
{
uchar status;
uint recvBits;
uchar i;
uchar buff[12];
//驗證指令+塊地址＋扇區密碼＋卡序列號
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 = MFRC522_ToCard(PCD_AUTHENT, buff, 12, buff, &recvBits);
if ((status != MI_OK) || (!(Read_MFRC522(Status2Reg) & 0x08)))
{
status = MI_ERR;
}
return status;
}
/*
* 函 數 名：MFRC522_Read
* 功能描述：讀塊數據
* 輸入參數：blockAddr--塊地址;recvData--讀出的塊數據
* 返 回 值：成功返回MI_OK
*/
uchar MFRC522_Read(uchar blockAddr, uchar *recvData)
{
uchar status;
uint unLen;
recvData[0] = PICC_READ;
recvData[1] = blockAddr;
CalulateCRC(recvData,2, &recvData[2]);
status = MFRC522_ToCard(PCD_TRANSCEIVE, recvData, 4, recvData, &unLen);
if ((status != MI_OK) || (unLen != 0x90))
{
status = MI_ERR;
}
return status;
}
/*
* 函 數 名：MFRC522_Write
* 功能描述：寫塊數據
* 輸入參數：blockAddr--塊地址;writeData--向塊寫16字節數據
* 返 回 值：成功返回MI_OK
*/
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++) //向FIFO寫16Byte數據
{
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;
}
/*
* 函 數 名：MFRC522_Halt
* 功能描述：命令卡片進入休眠狀態
* 輸入參數：無
* 返 回 值：無
*/
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);
}
