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add NFC template

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This commit is contained in:
Mats van Reenen 2020-05-22 10:36:54 +02:00
parent 6ce6002c7e
commit a0168a66d2
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/*
File: Mfrc522.cpp
Mfrc522 - Library for communicating with MFRC522 based NFC Reader/Writers
Created by Eelco Rouw - Mainly based on code from Grant Gibson (www.grantgibson.co.uk) and Dr.Leong ( WWW.B2CQSHOP.COM )
Lightly modified by Frank Milburn
Lightly modified by Roy Bakker C++ --> C
Released into the public domain
*/
#include <Mfrc522.h>
#include <SPI.h>
void RC522_init(int chipSelectPin, int NRSTPD)
{
_chipSelectPin = chipSelectPin;
P1DIR |= _chipSelectPin;
P1OUT |= _chipSelectPin;
_NRSTPD = NRSTPD;
P1DIR |= _NRSTPD;
P1OUT |= _NRSTPD;
RC522_reset();
//Timer: TPrescaler*TreloadVal/6.78MHz = 24ms
RC522_writeReg(TModeReg, 0x8D); //Tauto=1; f(Timer) = 6.78MHz/TPreScaler
RC522_writeReg(TPrescalerReg, 0x3E); //TModeReg[3..0] + TPrescalerReg
RC522_writeReg(TReloadRegL, 30);
RC522_writeReg(TReloadRegH, 0);
RC522_writeReg(TxAutoReg, 0x40); //100%ASK
RC522_writeReg(ModeReg, 0x3D);
//RC522_clearBitMask(Status2Reg, 0x08); //MFCrypto1On=0
//RC522_writeReg(RxSelReg, 0x86); //RxWait = RxSelReg[5..0]
//RC522_writeReg(RFCfgReg, 0x7F); //RxGain = 48dB
RC522_antennaOn();
}
/*
* Function: WriteReg
* Description: write a byte data into one register of MR RC522
* Input parameter: addr--register addressï¼›val--the value that need to write in
* Return: Null
*/
void RC522_writeReg(unsigned char addr, unsigned char val)
{
P1OUT &= ~(_chipSelectPin);
SPI_transfer((addr<<1)&0x7E);
SPI_transfer(val);
P1OUT |= _chipSelectPin;
}
/*
* Function: ReadReg
* Description: read a byte data into one register of MR RC522
* Input parameter: addr--register address
* Return: return the read value
*/
unsigned char RC522_readReg(unsigned char addr)
{
unsigned char val;
P1OUT &= ~(_chipSelectPin);
SPI_transfer(((addr<<1)&0x7E) | 0x80);
val = SPI_transfer(0x00);
P1OUT |= _chipSelectPin;
return val;
}
/*
* Function: SetBitMask
* Description: set RC522 register bit
* Input parameter: reg--register address;mask--value
* Return: null
*/
void RC522_setBitMask(unsigned char reg, unsigned char mask)
{
unsigned char tmp;
tmp = RC522_readReg(reg);
RC522_writeReg(reg, tmp | mask); // set bit mask
}
/*
* Function: ClearBitMask
* Description: clear RC522 register bit
* Input parameter: reg--register address;mask--value
* Return: null
*/
void RC522_clearBitMask(unsigned char reg, unsigned char mask)
{
unsigned char tmp;
tmp = RC522_readReg(reg);
RC522_writeReg(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 RC522_antennaOn(void)
{
unsigned char temp;
temp = RC522_readReg(TxControlReg);
if (!(temp & 0x03))
{
RC522_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 RC522_antennaOff(void)
{
RC522_clearBitMask(TxControlReg, 0x03);
}
/**
* Set the MFRC522 Receiver Gain (RxGain) to value specified by given mask.
* See 9.3.3.6 / table 98 in http://www.nxp.com/documents/data_sheet/MFRC522.pdf
* NOTE: Given mask is scrubbed with (0x07<<4)=01110000b as RCFfgReg may use reserved bits.
*/
void RC522_setAntennaGain(unsigned char mask) {
RC522_clearBitMask(RFCfgReg, (0x07<<4)); // clear needed to allow 000 pattern
RC522_setBitMask(RFCfgReg, (mask & 0x07)<<4); // only set RxGain[2:0] bits
}
/*
* Function: Reset
* Description: reset RC522
* Input parameter: null
* Return: null
*/
void RC522_reset(void)
{
RC522_writeReg(CommandReg, PCD_RESETPHASE);
}
/*
* Function: 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
*/
unsigned char RC522_request(unsigned char reqMode, unsigned char *TagType)
{
unsigned char status;
unsigned int backBits;
RC522_writeReg(BitFramingReg, 0x07); //TxLastBists = BitFramingReg[2..0] ???
TagType[0] = reqMode;
status = RC522_toCard(PCD_TRANSCEIVE, TagType, 1, TagType, &backBits);
if ((status != MI_OK) || (backBits != 0x10))
{
status = MI_ERR;
}
return status;
}
/*
* Function: 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
*/
unsigned char RC522_toCard(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:
{
irqEn = 0x12;
waitIRq = 0x10;
break;
}
case PCD_TRANSCEIVE:
{
irqEn = 0x77;
waitIRq = 0x30;
break;
}
default:
break;
}
RC522_writeReg(CommIEnReg, irqEn|0x80);
RC522_clearBitMask(CommIrqReg, 0x80);
RC522_setBitMask(FIFOLevelReg, 0x80);
RC522_writeReg(CommandReg, PCD_IDLE);
for (i=0; i<sendLen; i++)
{
RC522_writeReg(FIFODataReg, sendData[i]);
}
RC522_writeReg(CommandReg, command);
if (command == PCD_TRANSCEIVE)
{
RC522_setBitMask(BitFramingReg, 0x80); //StartSend=1,transmission of data starts
}
i = 2000;
do
{
n = RC522_readReg(CommIrqReg);
i--;
}
while ((i!=0) && !(n&0x01) && !(n&waitIRq));
RC522_clearBitMask(BitFramingReg, 0x80); //StartSend=0
if (i != 0)
{
if(!(RC522_readReg(ErrorReg) & 0x1B)) //BufferOvfl Collerr CRCErr ProtecolErr
{
status = MI_OK;
if (n & irqEn & 0x01)
{
status = MI_NOTAGERR; //??
}
if (command == PCD_TRANSCEIVE)
{
n = RC522_readReg(FIFOLevelReg);
lastBits = RC522_readReg(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;
}
for (i=0; i<n; i++)
{
backData[i] = RC522_readReg(FIFODataReg);
}
}
}
else
{
status = MI_ERR;
}
}
//RC522_setBitMask(ControlReg,0x80); //timer stops
//RC522_writeReg(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
*/
unsigned char RC522_anticoll(unsigned char *serNum)
{
unsigned char status;
unsigned char i;
unsigned char serNumCheck=0;
unsigned int unLen;
//RC522_clearBitMask(Status2Reg, 0x08); //TempSensclear
//RC522_clearBitMask(CollReg,0x80); //ValuesAfterColl
RC522_writeReg(BitFramingReg, 0x00); //TxLastBists = BitFramingReg[2..0]
serNum[0] = PICC_ANTICOLL;
serNum[1] = 0x20;
status = RC522_toCard(PCD_TRANSCEIVE, serNum, 2, serNum, &unLen);
if (status == MI_OK)
{
for (i=0; i<4; i++)
{
serNumCheck ^= serNum[i];
}
if (serNumCheck != serNum[i])
{
status = MI_ERR;
}
}
//RC522_setBitMask(CollReg, 0x80); //ValuesAfterColl=1
return status;
}
/*
* Function: CalulateCRC
* Description: Use MF522 to calculate CRC
* Input parameter: pIndata--the CRC data need to be read，len--data length，pOutData-- the caculated result of CRC
* Return: Null
*/
void RC522_calculateCRC(unsigned char *pIndata, unsigned char len, unsigned char *pOutData)
{
unsigned char i, n;
RC522_clearBitMask(DivIrqReg, 0x04); //CRCIrq = 0
RC522_setBitMask(FIFOLevelReg, 0x80);
//RC522_writeReg(CommandReg, PCD_IDLE);
for (i=0; i<len; i++)
{
RC522_writeReg(FIFODataReg, *(pIndata+i));
}
RC522_writeReg(CommandReg, PCD_CALCCRC);
i = 0xFF;
do
{
n = RC522_readReg(DivIrqReg);
i--;
}
while ((i!=0) && !(n&0x04)); //CRCIrq = 1
pOutData[0] = RC522_readReg(CRCResultRegL);
pOutData[1] = RC522_readReg(CRCResultRegM);
}
/*
* Function: SelectTag
* Description: Select card, read card storage volume
* Input parameter: serNum--Send card serial number
* Return: return the card storage volume
*/
unsigned char RC522_selectTag(unsigned char *serNum)
{
unsigned char i;
unsigned char status;
unsigned char size;
unsigned int recvBits;
unsigned char buffer[9];
//RC522_clearBitMask(Status2Reg, 0x08); //MFCrypto1On=0
buffer[0] = PICC_SElECTTAG;
buffer[1] = 0x70;
for (i=0; i<5; i++)
{
buffer[i+2] = *(serNum+i);
}
RC522_calculateCRC(buffer, 7, &buffer[7]); //??
status = RC522_toCard(PCD_TRANSCEIVE, buffer, 9, buffer, &recvBits);
if ((status == MI_OK) && (recvBits == 0x18))
{
size = buffer[0];
}
else
{
size = 0;
}
return size;
}
/*
* Function: Auth
* Description: verify card password
* Input parameters：authMode--password verify mode
0x60 = verify A password key
0x61 = verify B password key
BlockAddr--Block address
Sectorkey--Block password
serNum--Card serial number ，4 bytes
* Return: return MI_OK if successed
*/
unsigned char RC522_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];
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 = RC522_toCard(PCD_AUTHENT, buff, 12, buff, &recvBits);
if ((status != MI_OK) || (!(RC522_readReg(Status2Reg) & 0x08)))
{
status = MI_ERR;
}
return status;
}
/**
* Used to exit card from authenticated state.
* Remember to call this function after communicating with an authenticated card, otherwise no new communications can start.
*/
void RC522_stopCrypto() {
// Clear MFCrypto1On bit
RC522_clearBitMask(Status2Reg, 0x08); // Status2Reg[7..0] bits are: TempSensClear I2CForceHS reserved reserved MFCrypto1On ModemState[2:0]
}
/*
* Function: ReadBlock
* Description: Read data
* Input parameters：blockAddr--block address;recvData--the block data which are read
* Return: return MI_OK if successed
*/
unsigned char RC522_readBlock(unsigned char blockAddr, unsigned char *recvData)
{
unsigned char status;
unsigned int unLen;
recvData[0] = PICC_READ;
recvData[1] = blockAddr;
RC522_calculateCRC(recvData,2, &recvData[2]);
status = RC522_toCard(PCD_TRANSCEIVE, recvData, 4, recvData, &unLen);
if ((status != MI_OK) || (unLen != 0x90))
{
status = MI_ERR;
}
return status;
}
/*
* Function: WriteBlock
* Description: write block data
* Input parameters：blockAddr--block address;writeData--Write 16 bytes data into block
* Return: return MI_OK if successed
*/
unsigned char RC522_writeBlock(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;
RC522_calculateCRC(buff, 2, &buff[2]);
status = RC522_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++)
{
buff[i] = *(writeData+i);
}
RC522_calculateCRC(buff, 16, &buff[16]);
status = RC522_toCard(PCD_TRANSCEIVE, buff, 18, buff, &recvBits);
if ((status != MI_OK) || (recvBits != 4) || ((buff[0] & 0x0F) != 0x0A))
{
status = MI_ERR;
}
}
return status;
}
/*
* Function: Halt
* Description: Command the cards into sleep mode
* Input parameters: null
* Return: status
*/
unsigned char RC522_halt(void)
{
unsigned char status;
unsigned int unLen;
unsigned char buff[4];
buff[0] = PICC_HALT;
buff[1] = 0;
RC522_calculateCRC(buff, 2, &buff[2]);
status = RC522_toCard(PCD_TRANSCEIVE, buff, 4, buff,&unLen);
return status;
}

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/*
File: Mfrc522.h
Mfrc522 - Library for communicating with MFRC522 based NFC Reader/Writers
Created by Eelco Rouw - Mainly based on code from Grant Gibson (www.grantgibson.co.uk) and Dr.Leong ( WWW.B2CQSHOP.COM )
Lightly modified by Frank Milburn
Lightly modified by Roy Bakker C++ --> C
Released into the public domain
*/
#ifndef Mfrc522_h
#define Mfrc522_h
/*
MFRC522 and Card specific defines. For the role of each define, please consult the datasheet.
*/
#define MAX_LEN 16
//MF522 - Commands
#define PCD_IDLE 0x00
#define PCD_AUTHENT 0x0E
#define PCD_RECEIVE 0x08
#define PCD_TRANSMIT 0x04
#define PCD_TRANSCEIVE 0x0C
#define PCD_RESETPHASE 0x0F
#define PCD_CALCCRC 0x03
//Mifare_One - Commands
#define PICC_REQIDL 0x26
#define PICC_REQALL 0x52
#define PICC_ANTICOLL 0x93
#define PICC_SElECTTAG 0x93
#define PICC_AUTHENT1A 0x60
#define PICC_AUTHENT1B 0x61
#define PICC_READ 0x30
#define PICC_WRITE 0xA0
#define PICC_DECREMENT 0xC0
#define PICC_INCREMENT 0xC1
#define PICC_RESTORE 0xC2
#define PICC_TRANSFER 0xB0
#define PICC_HALT 0x50
//MF522 - Status
#define MI_OK 0
#define MI_NOTAGERR 1
#define MI_ERR 2
//MF522 - Registers
//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
void RC522_init(int chipSelectPin, int NRSTPD);
void RC522_writeReg(unsigned char addr, unsigned char val);
unsigned char RC522_readReg(unsigned char addr);
void RC522_setBitMask(unsigned char reg, unsigned char mask);
void RC522_clearBitMask(unsigned char reg, unsigned char mask);
void RC522_antennaOn(void);
void RC522_antennaOff(void);
void RC522_setAntennaGain(unsigned char mask);
void RC522_reset(void);
unsigned char RC522_request(unsigned char reqMode, unsigned char *TagType);
unsigned char RC522_toCard(unsigned char command, unsigned char *sendData, unsigned char sendLen, unsigned char *backData, unsigned int *backLen);
unsigned char RC522_anticoll(unsigned char *serNum);
void RC522_calculateCRC(unsigned char *pIndata, unsigned char len, unsigned char *pOutData);
unsigned char RC522_selectTag(unsigned char *serNum);
unsigned char RC522_auth(unsigned char authMode, unsigned char BlockAddr, unsigned char *Sectorkey, unsigned char *serNum);
void RC522_stopCrypto();
unsigned char RC522_readBlock(unsigned char blockAddr, unsigned char *recvData);
unsigned char RC522_writeBlock(unsigned char blockAddr, unsigned char *writeData);
unsigned char RC522_halt(void);
int _chipSelectPin;
int _NRSTPD;
#endif

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#include <msp430.h>
#include "NFC.h"
#include "SPI2.h"
#include "Mfrc522.h"

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/*
* NFC.c
*
* Created on: 22 mei 2020
* Author: Yeti
*/

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#ifndef _SPI_H_INCLUDED
#define _SPI_H_INCLUDED
#include <msp430.h>
#include <inttypes.h>
inline static void SPI_begin();
inline static uint8_t SPI_transfer(uint8_t data);
inline static void SPI_end();
void SPI_begin(void) {
/* Configure P1.5, 1.6, 1.7 for SPI. */
P1SEL |= (BIT5 | BIT6 | BIT7);
P1SEL2 |= (BIT5 | BIT6 | BIT7);
/* Setup SPI on USCI B */
UCB0CTL1 = (UCSSEL_2 | UCSWRST); // SMCLK + Reset
UCB0CTL0 = (UCCKPL | UCMSB | UCMST | UCSYNC); // 3-pin, 8-bit SPI master
UCB0BR0 = 8; // /8
UCB0BR1 = 0; //
UCB0CTL1 &= ~UCSWRST; // release USCI for operation
}
uint8_t SPI_transfer(uint8_t data) {
UCB0TXBUF = data; // Setting TXBUF clears the TXIFG
while(UCB0STAT & UCBUSY); // wait for SPI TX/RX to finish
return UCB0RXBUF; // Reading clears RXIFG
}
void SPI_end()
{
UCB0CTL1 |= UCSWRST; // Put USCI in reset mode
}
#endif