flash.h

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/*
 * Copyright (c) 2017, James Jackson and Daniel Koch, BYU MAGICC Lab
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * * Neither the name of the copyright holder nor the names of its
 *   contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#pragma once

#include <breezystm32.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

// #define ASSERT_CONCAT_(a, b) a##b
// #define ASSERT_CONCAT(a, b) ASSERT_CONCAT_(a, b)
// #define ct_assert(e) enum { ASSERT_CONCAT(assert_line_, __LINE__) = 1/(!!(e)) }

// define this symbol to increase or decrease flash size. not rely on flash_size_register.
#ifndef FLASH_PAGE_COUNT
#define FLASH_PAGE_COUNT 128
#endif

#define FLASH_PAGE_SIZE ((uint16_t)0x400)
#define NUM_PAGES 3
// if sizeof(_params) is over this number, compile-time error will occur. so, need to add another
// page to config data.
// TODO compile time check is currently disabled
#define CONFIG_SIZE (FLASH_PAGE_SIZE * NUM_PAGES)

// static const uint8_t EEPROM_CONF_VERSION = 76;
// static uint32_t enabledSensors = 0;
// static void resetConf(void);
static const uint32_t FLASH_WRITE_ADDR = 0x08000000 + (FLASH_PAGE_SIZE * (FLASH_PAGE_COUNT - (CONFIG_SIZE / 1024)));

void initEEPROM(void);

bool readEEPROM(void *dest, size_t len);

bool writeEEPROM(const void *src, size_t len);