friends i'm working with trf790A (nfcreader) with arduino by SPI protocol..
Is there any trf7970 library for arduino ?
in the pdf attached there is an algorithm for detecting ISo1443a and ISO 15693
i tried the program for ISO1443a,but its not working can any one help me
#include<SPI.h>
#define enable pins
#define CS pins
#define CS_ENABLED digitalWrite(CS,HIGH)
#define CS_DISABLED digitalWrite(CS,LOW)
void setup()
{
// put your setup code here, to run once:
pinMode(CS,OUTPUT);
pinMode(enable,OUTPUT);
digitalWrite(enable,HIGH);
pinMode(interrupt,INPUT);
SPI.setDataMode(SPI_MODE1);
SPI.setClockDivider(SPI_CLOCK_DIV8);
SPI.setBitOrder(MSBFIRST);
SPI.begin();
Serial.begin(9600);
}
void loop()
{
// put your main code here, to run repeatedly:
let();
}
void let(void)
{
CS_ENABLED;
Write(0x83);
CS_DISABLED;
CS_ENABLED;
Write(0x09);
Write(0x31);
CS_DISABLED;
CS_ENABLED;
Read(0x49);
CS_DISABLED;
CS_ENABLED;
Write(0x01);
Write(0x88);
CS_DISABLED;
CS_ENABLED;
Read(0x41);
CS_DISABLED;
CS_ENABLED;
Write(0x00);
Write(0x20);
CS_DISABLED;
CS_ENABLED;
Read(0x40);
CS_DISABLED;
CS_ENABLED;
Write(0x01);
Write(0x88);
CS_DISABLED;
CS_ENABLED;
Write(0x8F);
Write(0x90);
Write(0x3D);
Write(0x00);
Write(0x0F);
Write(0x26);
CS_DISABLED;
delay(100);
CS_ENABLED;
Write(0x6C);
Read(0xC0);
Read(0x3E);
CS_DISABLED;
CS_ENABLED;
Write(0x5C);
Read(0x02);
CS_DISABLED;
CS_ENABLED;
Write(0x7F);
Read(0x04);
Read(0x00);
CS_DISABLED;
CS_ENABLED;
Write(0x8F);
CS_DISABLED;
CS_ENABLED;
SPI.transfer(0x4F);
Read(0x7F);
CS_DISABLED;
delay(20);
CS_ENABLED;
Write(0x8F);
Write(0x90);
Write(0x3D);
Write(0x00);
Write(0x20);
Write(0x93);
Write(0x20);
CS_DISABLED;
delay(5);
CS_ENABLED;
Write(0x6C);
Read(0xC0);
Read(0x3E);
CS_DISABLED;
CS_ENABLED;
Write(0x5C);
Read(0x05);
CS_DISABLED;
CS_ENABLED;
Write(0x7F);
Read(0xCD);
Read(0x88);
Read(0x77);
Read(0x66);
Read(0x00);
delay(10);
CS_DISABLED;
CS_ENABLED;
Write(0x6C);
Read(0x00);
Read(0x3E);
CS_DISABLED;
CS_ENABLED;
Write(0x8F);
CS_DISABLED;
CS_ENABLED;
Write(0x4F);
Read(0x7F);
CS_DISABLED;
}
void Read(byte data )
{
Serial.print(SPI.transfer(data));
}
void Write(byte data)
{
SPI.transfer( data);
}
TestTRF7970A_with_BPV3 (1).pdf (217 KB)