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