stm32f4xx_flash_ramfunc.c
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/**
******************************************************************************
* @file stm32f4xx_flash_ramfunc.c
* @author MCD Application Team
* @version V1.5.0
* @date 06-March-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 2015 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_flash_ramfunc.h"
/** @addtogroup STM32F4xx_StdPeriph_Driver
* @{
*/
/** @defgroup FLASH RAMFUNC
* @brief FLASH RAMFUNC driver modules
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/** @defgroup FLASH_RAMFUNC_Private_Functions
* @{
*/
/** @defgroup FLASH_RAMFUNC_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 Start/Stop the flash interface 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.
* @param NewState: new state of the Smart Card mode.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
__RAM_FUNC FLASH_FlashInterfaceCmd(FunctionalState NewState)
{
if (NewState != DISABLE)
{
/* Start the flash interface while System Run */
CLEAR_BIT(PWR->CR, PWR_CR_FISSR);
}
else
{
/* Stop the flash interface while System Run */
SET_BIT(PWR->CR, PWR_CR_FISSR);
}
}
/**
* @brief Enable/Disable 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.
* @param NewState: new state of the Smart Card mode.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
__RAM_FUNC FLASH_FlashSleepModeCmd(FunctionalState NewState)
{
if (NewState != DISABLE)
{
/* Enable the flash sleep while System Run */
SET_BIT(PWR->CR, PWR_CR_FMSSR);
}
else
{
/* Disable the flash sleep while System Run */
CLEAR_BIT(PWR->CR, PWR_CR_FMSSR);
}
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/