#include "eeprom_driver.h"
#include "i2c_driver.h"
#include "config.h"

static uint8_t    eeprom_initialized;
static uint8_t    eeprom_init_attempted;
static ret_code_t eeprom_last_error;

ret_code_t eeprom_init(void)
{
    ret_code_t ret;
    uint32_t speed = I2C1_SPEED;

    eeprom_init_attempted = 1;
    ret = i2c_init(speed);
    if (ret == RET_OK) {
        eeprom_initialized = 1;
    }
    eeprom_last_error = ret;
    return ret;
}

ret_code_t eeprom_write(uint16_t addr, const uint8_t *data, uint32_t len)
{
    ret_code_t ret;

    if (addr + len > EEPROM_TOTAL_SIZE) {
        eeprom_last_error = RET_INVALID_PARAM;
        return RET_INVALID_PARAM;
    }

    ret = i2c_mem_write(EEPROM_DEV_ADDR, addr, 1, data, len);
    eeprom_last_error = ret;
    return ret;
}

ret_code_t eeprom_read(uint16_t addr, uint8_t *data, uint32_t len)
{
    ret_code_t ret;

    if (addr + len > EEPROM_TOTAL_SIZE) {
        eeprom_last_error = RET_INVALID_PARAM;
        return RET_INVALID_PARAM;
    }

    ret = i2c_mem_read(EEPROM_DEV_ADDR, addr, 1, data, len);
    eeprom_last_error = ret;
    return ret;
}

ret_code_t eeprom_get_last_error(void)
{
    return eeprom_last_error;
}

uint8_t eeprom_is_initialized(void)
{
    return eeprom_initialized;
}

void eeprom_reset_status(void)
{
    eeprom_last_error = RET_OK;
}