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 ret;

    eeprom_get_byte(EEPROM_ROBOT_ID_ADDR, &ret);

    return ret;

}

/**

 * @file eeprom.h

 * @brief handles eeprom storage for persistent data

 *

 * Contains functions and definitions for reading and writing to eeprom

 *

 * @author Colony Project, Brad Neuman

 */

 #ifndef _EEPROM_H_

 #define _EEPROM_H_

 #define EEPROM_ROBOT_ID_ADDR 0x0b

 /** @brief store a byte to eeproem

  *  @return 0 if success, nonzero on failure

  */

 int eeprom_put_byte(unsigned int addr, unsigned char byte);

 /** @brief reads a byte from eeprom

  *

  *  Pass it thge address and a pointer to a byte where the byte at the

  *  address will be stored

  *

  *  @return 0 if successful (byte is set to the eeprom value at addr), 

  *  nonzero if there was a problem

   */

 int eeprom_get_byte(unsigned int addr, unsigned char *byte);

 /** @brief get stored robot ID

  *

  *  returnes the value of eerpom at EEPROM_ROBOT_ID_ADDR

  *

  *  @return the robot id, if it is stored. If it returns 0xff it is probably invalid

  */

  unsigned char get_robotid(void);

 #endif

  //testtokenring();

  testmotors();