diff options
Diffstat (limited to 'fsm/eeprom.h')
| -rw-r--r-- | fsm/eeprom.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/fsm/eeprom.h b/fsm/eeprom.h new file mode 100644 index 0000000..440d2b3 --- /dev/null +++ b/fsm/eeprom.h @@ -0,0 +1,52 @@ +// fsm-eeprom.h: EEPROM API for SpaghettiMonster. +// Copyright (C) 2017-2023 Selene ToyKeeper +// SPDX-License-Identifier: GPL-3.0-or-later + +#pragma once + +#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 +// this fails when EEPROM_BYTES is a sizeof() +//#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 + |