#include "ID12RFID.h"

#include "mbed.h"

ID12RFID::ID12RFID(PinName rx)
        : _rfid(NC, rx) {
}

int ID12RFID::readable() {
    return _rfid.readable();
}

int ID12RFID::read() {
    while (_rfid.getc() != 2);

    int v = 0;
    _rfid.getc(); // drop 1st 2 bytes - we actually only read the lower 32-bits of the code
    _rfid.getc();

    for (int i=7; i>=0; i--) {
        char c = _rfid.getc(); // a ascii hex char
        int part = c - '0';

	// test if 'Alpha'

	if (part > 9) part -= 7;     // Quick & dirty !
	
	
        v |= part << (i * 4);
    }
    
    for (int i=0; i<5; i++) {
        _rfid.getc();
    }
    
    return v;
}

Just found and corrected a 'Bug' in RFID code, Previously, the ID Number read back was treated as a decimal number, not a HEX String, My fix corrects this. <<code>> #include "ID12RFID.h" #include "mbed.h" ID12RFID::ID12RFID(PinName rx) : _rfid(NC, rx) { } int ID12RFID::readable() { return _rfid.readable(); } int ID12RFID::read() { while (_rfid.getc() != 2); int v = 0; _rfid.getc(); // drop 1st 2 bytes - we actually only read the lower 32-bits of the code _rfid.getc(); for (int i=7; i>=0; i--) { char c = _rfid.getc(); // a ascii hex char int part = c - '0'; // test if 'Alpha' if (part > 9) part -= 7; // Quick & dirty ! v |= part << (i * 4); } for (int i=0; i<5; i++) { _rfid.getc(); } return v; } <</code>> Hope this is of use **Ceri