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195 lines
6.9 KiB
195 lines
6.9 KiB
3 years ago
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/**
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******************************************************************************
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* @file stm32f4xx_hal_flash_ramfunc.c
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* @author MCD Application Team
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* @version V1.3.2
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* @date 26-June-2015
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* @brief FLASH RAMFUNC module driver.
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* This file provides a FLASH firmware functions which should be
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* executed from internal SRAM
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* + Stop/Start the flash interface while System Run
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* + Enable/Disable the flash sleep while System Run
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@verbatim
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==============================================================================
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##### APIs executed from Internal RAM #####
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==============================================================================
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[..]
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*** ARM Compiler ***
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--------------------
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[..] RAM functions are defined using the toolchain options.
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Functions that are be executed in RAM should reside in a separate
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source module. Using the 'Options for File' dialog you can simply change
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the 'Code / Const' area of a module to a memory space in physical RAM.
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Available memory areas are declared in the 'Target' tab of the
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Options for Target' dialog.
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*** ICCARM Compiler ***
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-----------------------
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[..] RAM functions are defined using a specific toolchain keyword "__ramfunc".
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*** GNU Compiler ***
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--------------------
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[..] RAM functions are defined using a specific toolchain attribute
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"__attribute__((section(".RamFunc")))".
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@endverbatim
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f4xx_hal.h"
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/** @addtogroup STM32F4xx_HAL_Driver
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* @{
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*/
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/** @defgroup FLASHRAMFUNC FLASH RAMFUNC
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* @brief FLASH functions executed from RAM
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* @{
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*/
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#ifdef HAL_FLASH_MODULE_ENABLED
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#if defined(STM32F411xE) || defined(STM32F446xx)
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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/** @defgroup FLASHRAMFUNC_Exported_Functions FLASH RAMFUNC Exported Functions
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* @{
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*/
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/** @defgroup FLASHRAMFUNC_Exported_Functions_Group1 Peripheral features functions executed from internal RAM
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* @brief Peripheral Extended features functions
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*
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@verbatim
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===============================================================================
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##### ramfunc functions #####
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===============================================================================
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[..]
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This subsection provides a set of functions that should be executed from RAM
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transfers.
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@endverbatim
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* @{
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*/
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/**
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* @brief Stop the flash interface while System Run
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* @note This mode is only available for STM32F411xx devices.
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* @note This mode couldn't be set while executing with the flash itself.
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* It should be done with specific routine executed from RAM.
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* @retval None
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*/
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__RAM_FUNC HAL_FLASHEx_StopFlashInterfaceClk(void)
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{
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/* Enable Power ctrl clock */
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__HAL_RCC_PWR_CLK_ENABLE();
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/* Stop the flash interface while System Run */
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SET_BIT(PWR->CR, PWR_CR_FISSR);
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return HAL_OK;
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}
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/**
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* @brief Start the flash interface while System Run
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* @note This mode is only available for STM32F411xx devices.
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* @note This mode couldn't be set while executing with the flash itself.
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* It should be done with specific routine executed from RAM.
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* @retval None
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*/
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__RAM_FUNC HAL_FLASHEx_StartFlashInterfaceClk(void)
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{
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/* Enable Power ctrl clock */
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__HAL_RCC_PWR_CLK_ENABLE();
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/* Start the flash interface while System Run */
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CLEAR_BIT(PWR->CR, PWR_CR_FISSR);
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return HAL_OK;
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}
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/**
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* @brief Enable the flash sleep while System Run
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* @note This mode is only available for STM32F411xx devices.
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* @note This mode could n't be set while executing with the flash itself.
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* It should be done with specific routine executed from RAM.
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* @retval None
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*/
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__RAM_FUNC HAL_FLASHEx_EnableFlashSleepMode(void)
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{
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/* Enable Power ctrl clock */
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__HAL_RCC_PWR_CLK_ENABLE();
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/* Enable the flash sleep while System Run */
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SET_BIT(PWR->CR, PWR_CR_FMSSR);
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return HAL_OK;
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}
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/**
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* @brief Disable the flash sleep while System Run
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* @note This mode is only available for STM32F411xx devices.
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* @note This mode couldn't be set while executing with the flash itself.
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* It should be done with specific routine executed from RAM.
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* @retval None
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*/
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__RAM_FUNC HAL_FLASHEx_DisableFlashSleepMode(void)
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{
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/* Enable Power ctrl clock */
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__HAL_RCC_PWR_CLK_ENABLE();
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/* Disable the flash sleep while System Run */
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CLEAR_BIT(PWR->CR, PWR_CR_FMSSR);
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return HAL_OK;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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#endif /* STM32F411xE || STM32F446xx */
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#endif /* HAL_FLASH_MODULE_ENABLED */
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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