Tooltron

#include "addr.h"

uint8_t read_addr(void) {

    uint8_t a, b, c;

    a = eeprom_read_byte(EEPROM_ADDR1);

    b = eeprom_read_byte(EEPROM_ADDR2);

    c = eeprom_read_byte(EEPROM_ADDR3);

    if ((a == b) || a == c) {

        return a;

    } else if (b == c) {

        return b;

    } else {

        // Oh shit case

    }

}