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This example is for Wiring version 0027+. If you have a previous version, use the examples included with your software. If you see any errors or have comments, please let us know.
RFID reading by BARRAGAN
Demonstrates how to read data from a Parallax RFID reader connected to the Serial1 serial port and print the tag number through the Serial serial port.
Demonstrates how to read data from a Parallax RFID reader connected to the Serial1 serial port and print the tag number through the Serial serial port.
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
}
}
}