//--------------------------------------------------------------------------
//
//  Software for MSP430 based e-meters.
//
//  You may not use the Program in non-TI devices.
//
//  File: iiceeprom.c
//
//  Steve Underwood <steve-underwood@ti.com>
//  Texas Instruments Hong Kong Ltd.
//
//  $Id: emeter-iiceeprom.c,v 1.1 2004/12/13 01:29:11 a0754793 Exp $
//
//--------------------------------------------------------------------------
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#if !defined(__MSP430__)
#include <stdio.h>
#endif
#if defined(__GNUC__)
#include <signal.h>
#endif
#include <io.h>
#include <emeter-toolkit.h>
#include "emeter.h"
#include "emeter-structs.h"

#if EXTERNAL_EEPROM_SUPPORT

static int external_eeprom_startup(void)
{
    int error;
    int i;
#if 0
    int j;
    int k;
    uint16_t buf[64];
#endif
    
#if 0
    while ((CACTL2 & CAOUT))
        kick_watchdog();
#endif

#if 0
    /* EEPROM interface test */
    /* Go to 8MHz */
    SCFI0 = FN_3 | FLLD_4;
    SCFQCTL = 64 - 1;

    WDTCTL = (WDTCTL & 0xFF) | WDTPW | WDTHOLD;
    for (k = 0;  k < 32767;  k++)
    {
        LCDdec16(k, FIRST_POSITION + 1, NUMBER_WIDTH - 2, 0);
        for (j = 0;  j < 8192;  j += 128)
        {
            for (i = 0;  i < 64;  i++)
                buf[i] = j + (i << 1);
            if (!iicEEPROM_write(j, buf, 128))
            {
                LCDdec16(9991, FIRST_POSITION + 1, NUMBER_WIDTH - 2, 0);
                for (;;);
            }
        }
        for (j = 0;  j < 8192;  j += 128)
        {
            if (!iicEEPROM_read(j, buf, 128))
            {
                LCDdec16(9992, FIRST_POSITION + 1, NUMBER_WIDTH - 2, 0);
                for (;;);
            }
            for (i = 0;  i < 64;  i++)
            {
                if (buf[i] != j + (i << 1))
                {
                    LCDdec16(9993, FIRST_POSITION + 1, NUMBER_WIDTH - 2, 0);
                    for (;;);
                }
            }
        }
    }
#endif

    error = 0;
    /* Allow several retries of reading the EEPROM */
    for (i = 0;  i < 5;  i++)
    {
    }
    if (error)
    {
        record_meter_failure(METER_FAILURE_EEPROM_COMMUNICATION);
        return TRUE;
    }
    if (error)
        record_meter_failure(METER_FAILURE_EEPROM_CONTENTS);
    return TRUE;
}

void external_eeprom_init(void)
{
#if 0
    CACTL1 = CAREF_2 | CAEX | CAON;
    CACTL2 = P2CA1 | CAF;
    P1SEL |= BIT7;
    CAPD |= BIT7;

    while ((CACTL2 & CAOUT))
        kick_watchdog();
#endif

    iicEEPROM_init();
    external_eeprom_startup();
}
#endif