/*
* Function name: CalulateCRC
* Description: MF522 calculated CRC
* Input parameters: pIndata - CRC data, len - the length of the data, pOutData - calculate CRC result to be reading
* Return value: no
*/
void CalulateCRC(uchar *pIndata, uchar len, uchar *pOutData)
{
uchar i, n;
ClearBitMask(DivIrqReg, 0x04); //CRCIrq = 0
SetBitMask(FIFOLevelReg, 0x80); //清FIFO指针
//Write_MFRC522(CommandReg, PCD_IDLE);
// FIFO Write Data
for (i=0; i<len; i++)
{
Write_MFRC522(FIFODataReg, *(pIndata+i));
}
Write_MFRC522(CommandReg, PCD_CALCCRC);
// Wait for completion of the CRC calculation
i = 0xFF;
do
{
n = Read_MFRC522(DivIrqReg);
i--;
}
while ((i!=0) && !(n&0x04)); //CRCIrq = 1
//Read the CRC calculation result
pOutData[0] = Read_MFRC522(CRCResultRegL);
pOutData[1] = Read_MFRC522(CRCResultRegM);
}
void CalulateCRC(uint8_t *pIndata, uint8_t len, uint8_t *pOutData)
{
uint8_t i, n;
ClearBitMask(DivIrqReg, 0x04); //CRCIrq = 0
SetBitMask(FIFOLevelReg, 0x80);
//Write_MFRC522(CommandReg, PCD_IDLE);
for (i=0; i<len; i++)
{
Write_MFRC522(FIFODataReg, *(pIndata+i));
}
Write_MFRC522(CommandReg, PCD_CALCCRC);
i = 0xFF;
do
{
n = Read_MFRC522(DivIrqReg);
i--;
}
while ((i!=0) && !(n&0x04)); //CRCIrq = 1
pOutData[0] = Read_MFRC522(CRCResultRegL);
pOutData[1] = Read_MFRC522(CRCResultRegM);
}
uchar RFID::MFRC522_Auth(uchar authMode, uchar BlockAddr, uchar *Sectorkey, uchar *serNum) {
uchar status;
uint recvBits;
uchar i;
uchar 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 = MFRC522_ToCard(PCD_AUTHENT, buff, 12, buff, &recvBits);
if ((status != MI_OK) || (!(Read_MFRC522(Status2Reg) & 0x08)))
{
status = MI_ERR;
}
return status;
}
/*
* Function name: MFRC522_Auth
* Description: Verify card password
* Input: authMode - password authentication mode
0x60 = Verify A key
0x61 = B key validation
BlockAddr - block address
Sectorkey - Sector password
serNum - card serial number, 4 bytes
* Return value: the successful return MI_OK
*/
uchar MFRC522_Auth(uchar authMode, uchar BlockAddr, uchar *Sectorkey, uchar *serNum)
{
uchar status;
uint recvBits;
uchar i;
uchar buff[12];
// Verify command + block address + sectors password + card serial number
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;
}
uint8_t MFRC522_Auth(uint8_t authMode, uint8_t BlockAddr, uint8_t *Sectorkey, uint8_t *serNum)
{
uint8_t status;
uint32_t recvBits;
uint8_t i;
uint8_t 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 = MFRC522_ToCard(PCD_AUTHENT, buff, 12, buff, &recvBits);
if ((status != MI_OK) || (!(Read_MFRC522(Status2Reg) & 0x08)))
{
status = MI_ERR;
}
return status;
}
void RFID::AntennaOn(void) {
uchar temp;
temp = Read_MFRC522(TxControlReg);
if (!(temp & 0x03)) {
SetBitMask(TxControlReg, 0x03);
}
}
void AntennaOn(void)
{
uint8_t temp;
temp = Read_MFRC522(TxControlReg);
if (!(temp & 0x03))
{
SetBitMask(TxControlReg, 0x03);
}
}
uchar RFID::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: //????
{
irqEn = 0x12;
waitIRq = 0x10;
break;
}
case PCD_TRANSCEIVE: //??FIFO???
{
irqEn = 0x77;
waitIRq = 0x30;
break;
}
default:
break;
}
Write_MFRC522(CommIEnReg, irqEn|0x80); //??????
ClearBitMask(CommIrqReg, 0x80); //?????????
SetBitMask(FIFOLevelReg, 0x80); //FlushBuffer=1, FIFO???
Write_MFRC522(CommandReg, PCD_IDLE); //NO action;?????? ???
//?FIFO?????
for (i=0; i<sendLen; i++)
{
Write_MFRC522(FIFODataReg, sendData[i]);
}
//????
Write_MFRC522(CommandReg, command);
if (command == PCD_TRANSCEIVE)
{
SetBitMask(BitFramingReg, 0x80); //StartSend=1,transmission of data starts
}
//????????
i = 2000; //i????????,??M1???????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;
}
//??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;
}
void RFID::ClearBitMask(uchar reg, uchar mask) {
uchar tmp;
tmp = Read_MFRC522(reg);
Write_MFRC522(reg, tmp & (~mask));
}
void RFID::SetBitMask(uchar reg, uchar mask) {
uchar tmp;
tmp = Read_MFRC522(reg);
Write_MFRC522(reg, tmp | mask); // set bit mask
}
void ClearBitMask(uchar reg, uchar mask)
{
uchar tmp;
tmp = Read_MFRC522(reg);
Write_MFRC522(reg, tmp & (~mask)); // clear bit mask
}
/*
* Function name: MFRC522_ToCard
* Description: RC522 and ISO14443 card communication
* Input Parameters: command - MF522 command word,
* SendData - RC522 sent to the card data,
* SendLen - length of data sent
* BackData - received the card data is returned,
* BackLen - returns the bit length of the data
* Return value: the successful return MI_OK
*/
unsigned char 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: //Certification card secret
{
irqEn = 0x12;
waitIRq = 0x10;
break;
}
case PCD_TRANSCEIVE: //Transmit FIFO data
{
irqEn = 0x77;
waitIRq = 0x30;
break;
}
default:
break;
}
Write_MFRC522(CommIEnReg, irqEn|0x80); //Interrupt request
ClearBitMask(CommIrqReg, 0x80); //Clear all interrupt request bit
SetBitMask(FIFOLevelReg, 0x80); //FlushBuffer=1, FIFO Initialization
Write_MFRC522(CommandReg, PCD_IDLE); //NO action ??? !!! ATENTION
//Data is written to the FIFO
for (i=0; i<sendLen; i++)
{
Write_MFRC522(FIFODataReg, sendData[i]);
}
//Execute command
Write_MFRC522(CommandReg, command);
if (command == PCD_TRANSCEIVE)
{
SetBitMask(BitFramingReg, 0x80); //StartSend=1,transmission of data starts
}
//Waiting to receive data to complete
i = 2000; // i clock frequency adjustment, operating maximum wait time of 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;
}
// Read the FIFO data received
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;
}
void main(void)
{
unsigned char i=0;
unsigned char status;
unsigned char str[MAX_LEN];
unsigned char RC_size;
unsigned char blockAddr;
unsigned char mynum[20];
unsigned char serNum[7];
uint8_t RCV;
int resulta=0;
int fd;
int a=0;
fd=Init_SPI("/dev/spidev0.0");
setup_io();
SET_INPUT(25);
SET_OUTPUT(25);
ApiInit(fd);
MFRC522_Init();
a=Read_MFRC522(VersionReg);
printf("MFRC Version Read %02X \r\n",a);
// for(a=0;a<10;a++)
// {
// RCV=Read_MFRC522(VersionReg);
// //RCV=SPI_transfer(fd,a);
// printf("RCV %02X \r\n",RCV);
// SET_BIT(25);
// sleep(1);
// CLR_BIT(25);
// sleep(1);
// }
while(1)
{
status = MFRC522_Request(PICC_REQIDL, str);
if(resulta==status){
}else{
resulta=status;
}
if (status == MI_OK)
{
mifare_tag_type(str);
//usleep(1000);
}
status = MFRC522_Anticoll(str);
memcpy(serNum, str,5);
if (status == MI_OK)
{
printf("UID :");
for(i=0;i<5;i++)
{
printf("[");
printf("%02X",serNum[i]);
printf("]");
}
printf("\n");
//usleep(1000);
}
RC_size=MFRC522_SelectTag(serNum);
if(RC_size !=0)
{
printf("Select_OK Size %02d \n",RC_size);
puts("");
puts("");
}
}
close(fd);
}
void ClearBitMask(uint8_t reg, uint8_t mask)
{
uint8_t tmp;
tmp = Read_MFRC522(reg);
Write_MFRC522(reg, tmp & (~mask)); // clear bit mask
}
void SetBitMask(uint8_t reg, uint8_t mask)
{
uint8_t tmp;
tmp = Read_MFRC522(reg);
Write_MFRC522(reg, tmp | mask); // set bit mask
}
