micropython/ports/stm32/flash.h
Damien George b6ab9e420b stm32/flash: Change flash_erase to only erase a single sector at a time.
An erase sector sits in a given flash bank and some MCUs have two flash
banks.  If trying to erase a range of sectors and that range crosses from
one flash bank into the next, the original implementation of
`flash_erase()` would not handle this case and would do the wrong thing.

This commit changes `flash_erase()` to only erase a single sector, which
sidesteps the need to handle flash-bank-crossing.  Most callers of this
function only need to erase a single sector anyway.

Signed-off-by: Damien George <damien@micropython.org>
2024-01-08 12:33:34 +11:00

35 lines
1.6 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_STM32_FLASH_H
#define MICROPY_INCLUDED_STM32_FLASH_H
bool flash_is_valid_addr(uint32_t addr);
int32_t flash_get_sector_info(uint32_t addr, uint32_t *start_addr, uint32_t *size);
int flash_erase(uint32_t flash_dest);
int flash_write(uint32_t flash_dest, const uint32_t *src, uint32_t num_word32);
#endif // MICROPY_INCLUDED_STM32_FLASH_H