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Add support for STM32L0/L1 onboard EEPROM. (#8002)

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* Add support for STM32L0/L1 onboard EEPROM.

* Update docs/eeprom_driver.md

Co-Authored-By: Joel Challis <git@zvecr.com>

Co-authored-by: Joel Challis <git@zvecr.com>
This commit is contained in:
Nick Brassel 2020-03-12 12:59:55 +11:00 • committed by GitHub
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commit f2f2afe13b
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drivers/eeprom/eeprom_stm32_L0_L1.h Normal file
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/* Copyright 2020 Nick Brassel (tzarc)
*
* 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 2 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/>.
*/
#pragma once
/*
The size used by the STM32 L0/L1 EEPROM driver.
*/
#ifndef STM32_ONBOARD_EEPROM_SIZE
# ifdef VIA_ENABLE
# define STM32_ONBOARD_EEPROM_SIZE 1024
# else
# include "eeconfig.h"
# define STM32_ONBOARD_EEPROM_SIZE (((EECONFIG_SIZE + 3) / 4) * 4) // based off eeconfig's current usage, aligned to 4-byte sizes, to deal with LTO and EEPROM page sizing
# endif
#endif
#if STM32_ONBOARD_EEPROM_SIZE > 128
# pragma message("Please note: resetting EEPROM using an STM32L0/L1 device takes up to 1 second for every 1kB of internal EEPROM used.")
#endif