Colony

#include <avr/io.h>

#include "eeprom.h"

int eeprom_put_byte(unsigned int uiAddress, unsigned char ucData) {

    /* Wait for completion of previous write */

    while(EECR & (1<<EEWE));

    /* Set up address and data registers */

    EEAR = uiAddress;

    EEDR = ucData;

    /* Write logical one to EEMWE */

    EECR |= (1<<EEMWE);

    /* Start eeprom write by setting EEWE */

    EECR |= (1<<EEWE);

    return 0;

}

int eeprom_get_byte(unsigned int uiAddress, unsigned char *byte) {

    /* Wait for completion of previous write */

    while(EECR & (1<<EEWE));

    /* Set up address register */

    EEAR = uiAddress;

    /* Start eeprom read by writing EERE */

    EECR |= (1<<EERE);

    /* get data from data register */

    *byte=EEDR;

    return 0;

}

unsigned char get_robotid(void) {

    unsigned char c0, c1, c2;

    eeprom_get_byte(EEPROM_ROBOT_ID_ADDR, &c0);

    eeprom_get_byte(EEPROM_ROBOT_ID_ADDR+1, &c1);

    eeprom_get_byte(EEPROM_ROBOT_ID_ADDR+2, &c2);

    if(c0 == 'I' && c1 == 'D')

        return c2;

    else

        return 0xFF;

}

unsigned char get_bom_type(void) {

    unsigned char c0, c1, c2, c3;

    eeprom_get_byte(EEPROM_BOM_TYPE_ADDR, &c0);

    eeprom_get_byte(EEPROM_BOM_TYPE_ADDR+1, &c1);

    eeprom_get_byte(EEPROM_BOM_TYPE_ADDR+2, &c2);

    eeprom_get_byte(EEPROM_BOM_TYPE_ADDR+3, &c3);

    if(c0 == 'B' && c1 == 'O' && c2 == 'M')

        return c3;

    else

        return 0xFF;

}

unsigned char get_ir_offset(void) {

    unsigned char c0, c1, c2;

    eeprom_get_byte(EEPROM_IR_OFFSET_ADDR, &c0);

    eeprom_get_byte(EEPROM_IR_OFFSET_ADDR+1, &c1);

    eeprom_get_byte(EEPROM_IR_OFFSET_ADDR+2, &c2);

    if(c0 == 'I' && c1 == 'R')

        return c2;

    else

        return 0xFF;

}