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/*! \file i2ceeprom.c \brief Interface for standard I2C EEPROM memories. */

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

//

// File Name    : 'i2ceeprom.c'

// Title        : Interface for standard I2C EEPROM memories

// Author       : Pascal Stang - Copyright (C) 2003

// Created      : 2003.04.23

// Revised      : 2003.04.23

// Version      : 0.1

// Target MCU   : Atmel AVR series

// Editor Tabs  : 4

//

// This code is distributed under the GNU Public License

//      which can be found at http://www.gnu.org/licenses/gpl.txt

//

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

#include <avr/io.h>

#include <avr/interrupt.h>

#include <drivers/mcu/i2c.h>

#include <drivers/misc/i2ceeprom.h>

// Standard I2C bit rates are:

// 100KHz for slow speed

// 400KHz for high speed

// functions

void i2ceepromInit(void)

{

    i2cInit();

    // although there is no code here

    // don't forget to initialize the I2C interface itself

}

uint8_t i2ceepromReadByte(uint8_t i2cAddr, uint16_t memAddr)

{

    uint8_t packet[2];

    // prepare address

    packet[0] = (memAddr>>8);

    packet[1] = (memAddr&0x00FF);

    // send memory address we wish to access to the memory chip

    i2cMasterSend(i2cAddr, 2, packet);

    // retrieve the data at this memory address

    i2cMasterReceive(i2cAddr, 1, packet);

    // return data

    return packet[0];

}

void i2ceepromWriteByte(uint8_t i2cAddr, uint16_t memAddr, uint8_t data)

{

    uint8_t packet[3];

    // prepare address + data

    packet[0] = (memAddr>>8);

    packet[1] = (memAddr&0x00FF);

    packet[2] = data;

    // send memory address we wish to access to the memory chip

    // along with the data we wish to write

    i2cMasterSend(i2cAddr, 3, packet);

}