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/*********************************************************************

 *

 *   Functions for reading and writing to EEPROM.

 *

 *********************************************************************

 * FileName:            $HeadURL: https://svn.auml.se/svn/HomeAutomation/trunk/EmbeddedSoftware/PIC/Include/EEAccess.c $

 * Last changed:    $LastChangedDate: 2006-11-14 20:15:02 +0100 (Tue, 14 Nov 2006) $

 * By:          $LastChangedBy: johboh $

 * Revision:        $Revision: 94 $

 ********************************************************************/

#include <p18cxxx.h>

#include <EEaccess.h>

BYTE EERead(WORD addr)

{

    EEADRH=(BYTE)(addr>>8);

    EEADR=(BYTE)(addr & 0xFF);

    EECON1bits.EEPGD=0;

    EECON1bits.CFGS=0;

    EECON1bits.RD=1;

    return EEDATA; 

}

void EEWrite(WORD addr,BYTE data)

{

    PIR2bits.EEIF=0;

    EEADRH=(BYTE)(addr>>8);

    EEADR=(BYTE)(addr & 0xFF);

    EEDATA=data;

    EECON1bits.EEPGD=0;

    EECON1bits.CFGS=0;

    EECON1bits.WREN=1;

    INTCONbits.GIE=0;

    EECON2=0x55;

    EECON2=0xAA;

    EECON1bits.WR=1;

    INTCONbits.GIE=1;

    while(!PIR2bits.EEIF);

    EECON1bits.WREN=0;

}