118 lines
2.7 KiB
C
118 lines
2.7 KiB
C
|
/** @defgroup flash_file FLASH peripheral API
|
||
|
|
*
|
||
|
|
* @ingroup peripheral_apis
|
||
|
|
*
|
||
|
|
* @brief <b>libopencm3 STM32F3xx FLASH</b>
|
||
|
|
*
|
||
|
|
* @version 1.0.0
|
||
|
|
*
|
||
|
|
* @author @htmlonly © @endhtmlonly 2010
|
||
|
|
* Thomas Otto <tommi@viadmin.org>
|
||
|
|
* @author @htmlonly © @endhtmlonly 2010
|
||
|
|
* Mark Butler <mbutler@physics.otago.ac.nz>
|
||
|
|
*
|
||
|
|
* @date 14 January 2014
|
||
|
|
*
|
||
|
|
* This library supports the FLASH memory controller in the STM32F3
|
||
|
|
* series of ARM Cortex Microcontrollers by ST Microelectronics.
|
||
|
|
*
|
||
|
|
* For the STM32F3xx, accessing FLASH memory is described in
|
||
|
|
* section 3 of the STM32F3xx Reference Manual.
|
||
|
|
*
|
||
|
|
* LGPL License Terms @ref lgpl_license
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This file is part of the libopencm3 project.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
|
||
|
|
* Copyright (C) 2010 Mark Butler <mbutler@physics.otago.ac.nz>
|
||
|
|
*
|
||
|
|
* This library is free software: you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
||
|
|
* the Free Software Foundation, either version 3 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This library 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 Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public License
|
||
|
|
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**@{*/
|
||
|
|
|
||
|
|
#include <libopencm3/stm32/flash.h>
|
||
|
|
|
||
|
|
void flash_wait_for_last_operation(void)
|
||
|
|
{
|
||
|
|
while ((FLASH_SR & FLASH_SR_BSY) == FLASH_SR_BSY);
|
||
|
|
}
|
||
|
|
|
||
|
|
void flash_clear_pgerr_flag(void)
|
||
|
|
{
|
||
|
|
FLASH_SR |= FLASH_SR_PGERR;
|
||
|
|
}
|
||
|
|
|
||
|
|
void flash_clear_wrprterr_flag(void)
|
||
|
|
{
|
||
|
|
FLASH_SR |= FLASH_SR_WRPRTERR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
/** @brief Clear All Status Flags
|
||
|
|
|
||
|
|
Clears program error, end of operation, busy flags.
|
||
|
|
*/
|
||
|
|
|
||
|
|
void flash_clear_status_flags(void)
|
||
|
|
{
|
||
|
|
flash_clear_pgerr_flag();
|
||
|
|
flash_clear_wrprterr_flag();
|
||
|
|
flash_clear_eop_flag();
|
||
|
|
}
|
||
|
|
|
||
|
|
void flash_program_half_word(uint32_t address, uint16_t data)
|
||
|
|
{
|
||
|
|
flash_wait_for_last_operation();
|
||
|
|
|
||
|
|
FLASH_CR |= FLASH_CR_PG;
|
||
|
|
|
||
|
|
MMIO16(address) = data;
|
||
|
|
|
||
|
|
flash_wait_for_last_operation();
|
||
|
|
|
||
|
|
FLASH_CR &= ~FLASH_CR_PG;
|
||
|
|
}
|
||
|
|
|
||
|
|
void flash_erase_page(uint32_t page_address)
|
||
|
|
{
|
||
|
|
flash_wait_for_last_operation();
|
||
|
|
|
||
|
|
FLASH_CR |= FLASH_CR_PER;
|
||
|
|
FLASH_AR = page_address;
|
||
|
|
FLASH_CR |= FLASH_CR_STRT;
|
||
|
|
|
||
|
|
flash_wait_for_last_operation();
|
||
|
|
|
||
|
|
FLASH_CR &= ~FLASH_CR_PER;
|
||
|
|
}
|
||
|
|
|
||
|
|
void flash_erase_all_pages(void)
|
||
|
|
{
|
||
|
|
flash_wait_for_last_operation();
|
||
|
|
|
||
|
|
FLASH_CR |= FLASH_CR_MER;
|
||
|
|
FLASH_CR |= FLASH_CR_STRT;
|
||
|
|
|
||
|
|
flash_wait_for_last_operation();
|
||
|
|
FLASH_CR &= ~FLASH_CR_MER;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**@}*/
|
||
|
|
|