// RFID reading 
// by BARRAGAN <http://barraganstudio.com> 

byte val; 
char code[10]; 
int bytesread = 0; 
 
void setup() { 
 Serial1.begin(2400); // RFID reader SOUT pin connected to Serial1 RX pin at 2400bps 
 Serial.begin(9600);  // Serial set to 9600 
 pinMode(0,OUTPUT);   // Ser digital pin 0 as OUTPUT to connect it to the RFID /ENABLE pin 
} 
 
void loop() { 
  digitalWrite(0, LOW);                  // Activate the RFID reader 
  if(Serial1.available() > 0) {          // if data available from reader 
    if((val = Serial1.read()) == 10) {   // check for header 
      bytesread = 0; 
      while(bytesread<10) {              // read 10 digit code 
        if( Serial1.available() > 0) { 
          val = Serial1.read(); 
          if((val == 10)||(val == 13)) { // if header or stop bytes before the 10 digit reading 
            break;                       // stop reading 
          } 
          code[bytesread] = val;         // add the digit           
          bytesread++;                   // ready to read next digit  
        } 
      } 
      if(bytesread == 10) {              // if 10 digit read is complete 
        Serial.print("TAG code is: ");   // possibly a good TAG 
        Serial.println(code);            // print the TAG code 
      } 
      bytesread = 0; 
      digitalWrite(0, HIGH);             // deactivate RFID reader 
      delay(1000);                       // wait for a second 
    } 
  } 
}