151 lines
4.8 KiB
C
151 lines
4.8 KiB
C
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/**
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******************************************************************************
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* @file stm32f4xx_flash_ramfunc.c
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* @author MCD Application Team
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* @version V1.8.1
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* @date 27-January-2022
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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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*
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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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* Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f4xx_flash_ramfunc.h"
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/** @addtogroup STM32F4xx_StdPeriph_Driver
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* @{
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*/
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/** @defgroup FLASH RAMFUNC
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* @brief FLASH RAMFUNC driver modules
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* @{
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*/
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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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/* Private functions ---------------------------------------------------------*/
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/** @defgroup FLASH_RAMFUNC_Private_Functions
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* @{
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*/
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/** @defgroup FLASH_RAMFUNC_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 Start/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 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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* @param NewState: new state of the Smart Card mode.
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* This parameter can be: ENABLE or DISABLE.
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* @retval None
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*/
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__RAM_FUNC FLASH_FlashInterfaceCmd(FunctionalState NewState)
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{
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if (NewState != DISABLE)
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{
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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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}
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else
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{
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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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}
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}
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/**
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* @brief Enable/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 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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* @param NewState: new state of the Smart Card mode.
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* This parameter can be: ENABLE or DISABLE.
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* @retval None
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*/
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__RAM_FUNC FLASH_FlashSleepModeCmd(FunctionalState NewState)
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{
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if (NewState != DISABLE)
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{
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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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}
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else
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{
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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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}
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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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/**
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* @}
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*/
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/**
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* @}
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*/
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