Communication

Rfid Click with Easy Pic V8

I tried to make the Rfid click work with Easypicv8 but it didn't and the code you will find below.

Code:-

// CR95HF Commands Definition
#define IDN 0x01
#define ProtocolSelect 0x02
#define SendRecv 0x04
#define Idle 0x07
#define RdReg 0x08
#define WrReg 0x09
#define BaudRate 0x0A
#define ECHO 0x55

// RFID Click Connections
sbit SSI_1 at LATA.B2;
sbit SSI_0 at LATE.B1;
sbit IRQ_IN at LATC.B0;
sbit CS at LATE.B0;

sbit SSI_1_Direction at TRISA.B2;
sbit SSI_0_Direction at TRISE.B1;
sbit IRQ_IN_Direction at TRISC.B0;
sbit CS_Direction at TRISE.B0;
// End RFID Click module connections

//Lcd module connections
sbit LCD_RS at LATA3_bit;
sbit LCD_EN at LATB1_bit;
sbit LCD_D4 at LATB2_bit;
sbit LCD_D5 at LATB3_bit;
sbit LCD_D6 at LATB4_bit;
sbit LCD_D7 at LATB5_bit;

sbit LCD_RS_Direction at TRISA3_bit;
sbit LCD_EN_Direction at TRISB1_bit;
sbit LCD_D4_Direction at TRISB2_bit;
sbit LCD_D5_Direction at TRISB3_bit;
sbit LCD_D6_Direction at TRISB4_bit;
sbit LCD_D7_Direction at TRISB5_bit;
//End of Lcd module connections

unsigned short sdata[18];
unsigned short rdata[18];
unsigned short res = 0, dataNum = 0;
unsigned short j = 0, tmp = 0;
char ID[10] = {0};
char txt_hex[3];

// Write command to the CR95HF
void writeCmd(unsigned short cmd, unsigned short dataLen){
unsigned short i = 0;

CS = 0;
SPI1_Write(0x00); // Send cmd to CR95HF
SPI1_Write(cmd);
SPI1_Write(dataLen);
while (dataLen == 0){
CS = 1;
break;
}
for(i=0; i<dataLen; i++){
SPI1_Write(sdata[i]);
}
CS = 1;
}

// Poll the CR95HF
void readCmd(){
unsigned short i = 0;

while(1){
CS = 0;
SPI1_Write(0x03);
res = SPI1_Read(0);
CS = 1;

if((res & 0x08) >> 3){
CS = 0;
SPI1_Write(0x02);
res = SPI1_Read(0);
dataNum = SPI1_Read(0);
for(i=0; i<dataNum; i++)
rdata[i] = SPI1_Read(0);
CS = 1;
break;
}
CS = 1;
Delay_ms(10);
}
}

// Calibrate CR95HF device
void Calibration() {
//TFT_Write_Text("Calibrating CR95HF...", 55, 100);
sdata[0] = 0x03;
sdata[1] = 0xA1;
sdata[2] = 0x00;
sdata[3] = 0xF8;
sdata[4] = 0x01;
sdata[5] = 0x18;
sdata[6] = 0x00;
sdata[7] = 0x20;
sdata[8] = 0x60;
sdata[9] = 0x60;
sdata[10] = 0x00;
sdata[11] = 0x00;
sdata[12] = 0x3F;
sdata[13] = 0x01;
writeCmd(Idle, 0x0E);
readCmd();

sdata[11] = 0xFC;
writeCmd(Idle, 0x0E);
readCmd();

sdata[11] = 0x7C;
writeCmd(Idle, 0x0E);
readCmd();

sdata[11] = 0x3C;
writeCmd(Idle, 0x0E);
readCmd();

sdata[11] = 0x5C;
writeCmd(Idle, 0x0E);
readCmd();

sdata[11] = 0x6C;
writeCmd(Idle, 0x0E);
readCmd();

sdata[11] = 0x74;
writeCmd(Idle, 0x0E);
readCmd();

sdata[11] = 0x70;
writeCmd(Idle, 0x0E);
readCmd();
}

// Select the RF communication protocol (ISO/IEC 14443-A)
void Select_ISO_IEC_14443_A_Protocol() {
sdata[0] = 0x02;
sdata[1] = 0x00;
writeCmd(ProtocolSelect, 2);
readCmd();

// Clear read and write buffers
for(j=0; j<18; j++ ){
rdata[j] = 0;
sdata[j] = 0;
}
}

// Configure IndexMod & Gain
void IndexMod_Gain() {
sdata[0] = 0x09;
sdata[1] = 0x04;
sdata[2] = 0x68;
sdata[3] = 0x01;
sdata[4] = 0x01;
sdata[5] = 0x50;
writeCmd(WrReg, 6);
readCmd();
}

// Configure Auto FDet
void AutoFDet() {
sdata[0] = 0x09;
sdata[1] = 0x04;
sdata[2] = 0x0A;
sdata[3] = 0x01;
sdata[4] = 0x02;
sdata[5] = 0xA1;
writeCmd(WrReg, 6);
readCmd();
}

// Read the tag ID
char GetNFCTag() {
sdata[0] = 0x26;
sdata[1] = 0x07;
writeCmd(SendRecv , 2);
readCmd();

sdata[0] = 0x93;
sdata[1] = 0x20;
sdata[2] = 0x08;
writeCmd(SendRecv , 3);
readCmd();

if(res == 0x80) {
for( j = 1; j < dataNum - 3; j++) {
ByteToHex(rdata[j], txt_hex);
strcat(ID, txt_hex);
LATD.B0 = 1;
}
ID[10] = 0;
return 1;
}
else
{
LATD.B0 = 0;
return 0;
}
}

// Initialize MCU and peripherals
void MCU_Init(){
// Configure RFid Click pins
ANSELA = 0;
ANSELB = 0;
ANSELC = 0;
ANSELD = 0;
ANSELE = 0;
SLRCONE = 0;

CS_Direction = 0;
IRQ_IN_Direction = 0;
SSI_0_Direction = 0;
SSI_1_Direction = 0;

IRQ_IN = 1;
CS = 1;
// Set in SPI mode + Jumper wire workaround required, see header notes
SSI_1 = 0;
SSI_0 = 1;
// Initialize SPI module
SPI1_Init_Advanced(_SPI_MASTER_OSC_DIV16, _SPI_DATA_SAMPLE_MIDDLE, _SPI_CLK_IDLE_LOW, _SPI_LOW_2_HIGH);
UART1_Init(9600);
Lcd_Init(); // Initialize Lcd
Lcd_Cmd(_LCD_CLEAR); // Clear display
Lcd_Cmd(_LCD_CURSOR_OFF); // Cursor off
Lcd_Out(1,1,"RFid example"); // Write text in first row
UART1_Write_Text("RFid example\r\n");
}

// Get Echo reponse from CR95HF
char EchoResponse() {
CS = 0;
SPI1_Write(0x00); // Send cmd to CR95HF
SPI1_Write(ECHO);
CS = 1;
while(1){
CS = 0;
SPI1_Write(0x03);
tmp = SPI1_Read(1);
CS = 1;

if((tmp & 0x08) >> 3){
CS = 0;
SPI1_Write(0x02);
tmp = SPI1_Read(1);
CS = 1;
if(tmp == ECHO){
return 1;
}
return 0;
}
}
}

void main() {
MCU_Init(); // Initialize MCU and peripherals
while (!EchoResponse()) { // Until CR95HF is detected
IRQ_IN = 0; // put IRQ_IN pin at low level
Delay_ms(10);
IRQ_IN = 1; // put IRQ_IN pin at low level
Delay_ms(10);
}
Lcd_Out(2, 1, "Calibration..."); // Write text in first row
UART1_Write_Text("Calibration...\r\n");
// Configure RFid
Calibration();
IndexMod_Gain();
AutoFDet();
Select_ISO_IEC_14443_A_Protocol();
// Ready for TAG scanning
Lcd_Cmd(_LCD_CLEAR);
Lcd_Out(1, 1, "Tag ID: "); // Write text in first row
UART1_Write_Text("RFid Ready\r\n");
while(1){
if(GetNFCTag()){
Lcd_Cmd(_LCD_CLEAR);
Lcd_Out(1, 1, "saher: "); // Get tag ID
Lcd_Out(2,1, &ID); // Display tag on Lcd
UART1_Write_Text("Tag ID:");
UART1_Write_Text(ID);
UART1_Write(13);
UART1_Write(10);
// Clear ID buffer
for(j=0; j<10; j++){
ID[j] = 0;
}
Delay_ms(500);
}
}
}

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