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/*
* fsm-eeprom.h: EEPROM API for SpaghettiMonster.
*
* Copyright (C) 2017 Selene Scriven
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef FSM_EEPROM_H
#define FSM_EEPROM_H
#include <avr/eeprom.h>
// set this higher to enable normal eeprom functions
#ifndef EEPROM_BYTES
#define EEPROM_BYTES 0
#endif
// set this higher to enable wear-levelled eeprom functions
#ifndef EEPROM_WL_BYTES
#define EEPROM_WL_BYTES 0
#endif
#ifdef USE_EEPROM
#if EEPROM_BYTES >= (EEPSIZE/2)
#error Requested EEPROM_BYTES too big.
#endif
#ifdef EEPROM_OVERRIDE
uint8_t *eeprom;
#else
uint8_t eeprom[EEPROM_BYTES];
#endif
uint8_t load_eeprom(); // returns 1 for success, 0 for no data found
void save_eeprom();
#define EEP_START (EEPSIZE/2)
#endif
#ifdef USE_EEPROM_WL
#if EEPROM_WL_BYTES >= (EEPSIZE/4)
#error Requested EEPROM_WL_BYTES too big.
#endif
uint8_t eeprom_wl[EEPROM_WL_BYTES];
uint8_t load_eeprom_wl(); // returns 1 for success, 0 for no data found
void save_eeprom_wl();
#define EEP_WL_SIZE (EEPSIZE/2)
#endif
#if EEPSIZE > 256
#define EEP_OFFSET_T uint16_t
#else
#define EEP_OFFSET_T uint8_t
#endif
// if this marker isn't found, the eeprom is assumed to be blank
#define EEP_MARKER 0b10100101
#endif
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