diff options
Diffstat (limited to 'Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sram.c')
| -rw-r--r-- | Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sram.c | 682 |
1 files changed, 682 insertions, 0 deletions
diff --git a/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sram.c b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sram.c new file mode 100644 index 0000000..cff0ced --- /dev/null +++ b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sram.c @@ -0,0 +1,682 @@ +/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_sram.c
+ * @author MCD Application Team
+ * @version V1.3.2
+ * @date 26-June-2015
+ * @brief SRAM HAL module driver.
+ * This file provides a generic firmware to drive SRAM memories
+ * mounted as external device.
+ *
+ @verbatim
+ ==============================================================================
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+ This driver is a generic layered driver which contains a set of APIs used to
+ control SRAM memories. It uses the FMC layer functions to interface
+ with SRAM devices.
+ The following sequence should be followed to configure the FMC/FSMC to interface
+ with SRAM/PSRAM memories:
+
+ (#) Declare a SRAM_HandleTypeDef handle structure, for example:
+ SRAM_HandleTypeDef hsram; and:
+
+ (++) Fill the SRAM_HandleTypeDef handle "Init" field with the allowed
+ values of the structure member.
+
+ (++) Fill the SRAM_HandleTypeDef handle "Instance" field with a predefined
+ base register instance for NOR or SRAM device
+
+ (++) Fill the SRAM_HandleTypeDef handle "Extended" field with a predefined
+ base register instance for NOR or SRAM extended mode
+
+ (#) Declare two FMC_NORSRAM_TimingTypeDef structures, for both normal and extended
+ mode timings; for example:
+ FMC_NORSRAM_TimingTypeDef Timing and FMC_NORSRAM_TimingTypeDef ExTiming;
+ and fill its fields with the allowed values of the structure member.
+
+ (#) Initialize the SRAM Controller by calling the function HAL_SRAM_Init(). This function
+ performs the following sequence:
+
+ (##) MSP hardware layer configuration using the function HAL_SRAM_MspInit()
+ (##) Control register configuration using the FMC NORSRAM interface function
+ FMC_NORSRAM_Init()
+ (##) Timing register configuration using the FMC NORSRAM interface function
+ FMC_NORSRAM_Timing_Init()
+ (##) Extended mode Timing register configuration using the FMC NORSRAM interface function
+ FMC_NORSRAM_Extended_Timing_Init()
+ (##) Enable the SRAM device using the macro __FMC_NORSRAM_ENABLE()
+
+ (#) At this stage you can perform read/write accesses from/to the memory connected
+ to the NOR/SRAM Bank. You can perform either polling or DMA transfer using the
+ following APIs:
+ (++) HAL_SRAM_Read()/HAL_SRAM_Write() for polling read/write access
+ (++) HAL_SRAM_Read_DMA()/HAL_SRAM_Write_DMA() for DMA read/write transfer
+
+ (#) You can also control the SRAM device by calling the control APIs HAL_SRAM_WriteOperation_Enable()/
+ HAL_SRAM_WriteOperation_Disable() to respectively enable/disable the SRAM write operation
+
+ (#) You can continuously monitor the SRAM device HAL state by calling the function
+ HAL_SRAM_GetState()
+
+ @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 SRAM SRAM
+ * @brief SRAM driver modules
+ * @{
+ */
+#ifdef HAL_SRAM_MODULE_ENABLED
+
+#if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx) ||\
+ defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\
+ defined(STM32F446xx)
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup SRAM_Exported_Functions SRAM Exported Functions
+ * @{
+ */
+/** @defgroup SRAM_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @brief Initialization and Configuration functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### SRAM Initialization and de_initialization functions #####
+ ==============================================================================
+ [..] This section provides functions allowing to initialize/de-initialize
+ the SRAM memory
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Performs the SRAM device initialization sequence
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @param Timing: Pointer to SRAM control timing structure
+ * @param ExtTiming: Pointer to SRAM extended mode timing structure
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_Init(SRAM_HandleTypeDef *hsram, FMC_NORSRAM_TimingTypeDef *Timing, FMC_NORSRAM_TimingTypeDef *ExtTiming)
+{
+ /* Check the SRAM handle parameter */
+ if(hsram == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ if(hsram->State == HAL_SRAM_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ hsram->Lock = HAL_UNLOCKED;
+ /* Initialize the low level hardware (MSP) */
+ HAL_SRAM_MspInit(hsram);
+ }
+
+ /* Initialize SRAM control Interface */
+ FMC_NORSRAM_Init(hsram->Instance, &(hsram->Init));
+
+ /* Initialize SRAM timing Interface */
+ FMC_NORSRAM_Timing_Init(hsram->Instance, Timing, hsram->Init.NSBank);
+
+ /* Initialize SRAM extended mode timing Interface */
+ FMC_NORSRAM_Extended_Timing_Init(hsram->Extended, ExtTiming, hsram->Init.NSBank, hsram->Init.ExtendedMode);
+
+ /* Enable the NORSRAM device */
+ __FMC_NORSRAM_ENABLE(hsram->Instance, hsram->Init.NSBank);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Performs the SRAM device De-initialization sequence.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_DeInit(SRAM_HandleTypeDef *hsram)
+{
+ /* De-Initialize the low level hardware (MSP) */
+ HAL_SRAM_MspDeInit(hsram);
+
+ /* Configure the SRAM registers with their reset values */
+ FMC_NORSRAM_DeInit(hsram->Instance, hsram->Extended, hsram->Init.NSBank);
+
+ hsram->State = HAL_SRAM_STATE_RESET;
+
+ /* Release Lock */
+ __HAL_UNLOCK(hsram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief SRAM MSP Init.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @retval None
+ */
+__weak void HAL_SRAM_MspInit(SRAM_HandleTypeDef *hsram)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_SRAM_MspInit could be implemented in the user file
+ */
+}
+
+/**
+ * @brief SRAM MSP DeInit.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @retval None
+ */
+__weak void HAL_SRAM_MspDeInit(SRAM_HandleTypeDef *hsram)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_SRAM_MspDeInit could be implemented in the user file
+ */
+}
+
+/**
+ * @brief DMA transfer complete callback.
+ * @param hdma: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @retval None
+ */
+__weak void HAL_SRAM_DMA_XferCpltCallback(DMA_HandleTypeDef *hdma)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_SRAM_DMA_XferCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief DMA transfer complete error callback.
+ * @param hdma: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @retval None
+ */
+__weak void HAL_SRAM_DMA_XferErrorCallback(DMA_HandleTypeDef *hdma)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_SRAM_DMA_XferErrorCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup SRAM_Exported_Functions_Group2 Input and Output functions
+ * @brief Input Output and memory control functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### SRAM Input and Output functions #####
+ ==============================================================================
+ [..]
+ This section provides functions allowing to use and control the SRAM memory
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Reads 8-bit buffer from SRAM memory.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @param pAddress: Pointer to read start address
+ * @param pDstBuffer: Pointer to destination buffer
+ * @param BufferSize: Size of the buffer to read from memory
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_Read_8b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint8_t *pDstBuffer, uint32_t BufferSize)
+{
+ __IO uint8_t * pSramAddress = (uint8_t *)pAddress;
+
+ /* Process Locked */
+ __HAL_LOCK(hsram);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_BUSY;
+
+ /* Read data from memory */
+ for(; BufferSize != 0; BufferSize--)
+ {
+ *pDstBuffer = *(__IO uint8_t *)pSramAddress;
+ pDstBuffer++;
+ pSramAddress++;
+ }
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_READY;
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hsram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Writes 8-bit buffer to SRAM memory.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @param pAddress: Pointer to write start address
+ * @param pSrcBuffer: Pointer to source buffer to write
+ * @param BufferSize: Size of the buffer to write to memory
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_Write_8b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint8_t *pSrcBuffer, uint32_t BufferSize)
+{
+ __IO uint8_t * pSramAddress = (uint8_t *)pAddress;
+
+ /* Check the SRAM controller state */
+ if(hsram->State == HAL_SRAM_STATE_PROTECTED)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hsram);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_BUSY;
+
+ /* Write data to memory */
+ for(; BufferSize != 0; BufferSize--)
+ {
+ *(__IO uint8_t *)pSramAddress = *pSrcBuffer;
+ pSrcBuffer++;
+ pSramAddress++;
+ }
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_READY;
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hsram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Reads 16-bit buffer from SRAM memory.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @param pAddress: Pointer to read start address
+ * @param pDstBuffer: Pointer to destination buffer
+ * @param BufferSize: Size of the buffer to read from memory
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_Read_16b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint16_t *pDstBuffer, uint32_t BufferSize)
+{
+ __IO uint16_t * pSramAddress = (uint16_t *)pAddress;
+
+ /* Process Locked */
+ __HAL_LOCK(hsram);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_BUSY;
+
+ /* Read data from memory */
+ for(; BufferSize != 0; BufferSize--)
+ {
+ *pDstBuffer = *(__IO uint16_t *)pSramAddress;
+ pDstBuffer++;
+ pSramAddress++;
+ }
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_READY;
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hsram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Writes 16-bit buffer to SRAM memory.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @param pAddress: Pointer to write start address
+ * @param pSrcBuffer: Pointer to source buffer to write
+ * @param BufferSize: Size of the buffer to write to memory
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_Write_16b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint16_t *pSrcBuffer, uint32_t BufferSize)
+{
+ __IO uint16_t * pSramAddress = (uint16_t *)pAddress;
+
+ /* Check the SRAM controller state */
+ if(hsram->State == HAL_SRAM_STATE_PROTECTED)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hsram);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_BUSY;
+
+ /* Write data to memory */
+ for(; BufferSize != 0; BufferSize--)
+ {
+ *(__IO uint16_t *)pSramAddress = *pSrcBuffer;
+ pSrcBuffer++;
+ pSramAddress++;
+ }
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_READY;
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hsram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Reads 32-bit buffer from SRAM memory.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @param pAddress: Pointer to read start address
+ * @param pDstBuffer: Pointer to destination buffer
+ * @param BufferSize: Size of the buffer to read from memory
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_Read_32b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint32_t *pDstBuffer, uint32_t BufferSize)
+{
+ /* Process Locked */
+ __HAL_LOCK(hsram);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_BUSY;
+
+ /* Read data from memory */
+ for(; BufferSize != 0; BufferSize--)
+ {
+ *pDstBuffer = *(__IO uint32_t *)pAddress;
+ pDstBuffer++;
+ pAddress++;
+ }
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_READY;
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hsram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Writes 32-bit buffer to SRAM memory.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @param pAddress: Pointer to write start address
+ * @param pSrcBuffer: Pointer to source buffer to write
+ * @param BufferSize: Size of the buffer to write to memory
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_Write_32b(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint32_t *pSrcBuffer, uint32_t BufferSize)
+{
+ /* Check the SRAM controller state */
+ if(hsram->State == HAL_SRAM_STATE_PROTECTED)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hsram);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_BUSY;
+
+ /* Write data to memory */
+ for(; BufferSize != 0; BufferSize--)
+ {
+ *(__IO uint32_t *)pAddress = *pSrcBuffer;
+ pSrcBuffer++;
+ pAddress++;
+ }
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_READY;
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hsram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Reads a Words data from the SRAM memory using DMA transfer.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @param pAddress: Pointer to read start address
+ * @param pDstBuffer: Pointer to destination buffer
+ * @param BufferSize: Size of the buffer to read from memory
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_Read_DMA(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint32_t *pDstBuffer, uint32_t BufferSize)
+{
+ /* Process Locked */
+ __HAL_LOCK(hsram);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_BUSY;
+
+ /* Configure DMA user callbacks */
+ hsram->hdma->XferCpltCallback = HAL_SRAM_DMA_XferCpltCallback;
+ hsram->hdma->XferErrorCallback = HAL_SRAM_DMA_XferErrorCallback;
+
+ /* Enable the DMA Stream */
+ HAL_DMA_Start_IT(hsram->hdma, (uint32_t)pAddress, (uint32_t)pDstBuffer, (uint32_t)BufferSize);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_READY;
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hsram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Writes a Words data buffer to SRAM memory using DMA transfer.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @param pAddress: Pointer to write start address
+ * @param pSrcBuffer: Pointer to source buffer to write
+ * @param BufferSize: Size of the buffer to write to memory
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_Write_DMA(SRAM_HandleTypeDef *hsram, uint32_t *pAddress, uint32_t *pSrcBuffer, uint32_t BufferSize)
+{
+ /* Check the SRAM controller state */
+ if(hsram->State == HAL_SRAM_STATE_PROTECTED)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hsram);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_BUSY;
+
+ /* Configure DMA user callbacks */
+ hsram->hdma->XferCpltCallback = HAL_SRAM_DMA_XferCpltCallback;
+ hsram->hdma->XferErrorCallback = HAL_SRAM_DMA_XferErrorCallback;
+
+ /* Enable the DMA Stream */
+ HAL_DMA_Start_IT(hsram->hdma, (uint32_t)pSrcBuffer, (uint32_t)pAddress, (uint32_t)BufferSize);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_READY;
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hsram);
+
+ return HAL_OK;
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup SRAM_Exported_Functions_Group3 Control functions
+ * @brief management functions
+ *
+@verbatim
+ ==============================================================================
+ ##### SRAM Control functions #####
+ ==============================================================================
+ [..]
+ This subsection provides a set of functions allowing to control dynamically
+ the SRAM interface.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Enables dynamically SRAM write operation.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_WriteOperation_Enable(SRAM_HandleTypeDef *hsram)
+{
+ /* Process Locked */
+ __HAL_LOCK(hsram);
+
+ /* Enable write operation */
+ FMC_NORSRAM_WriteOperation_Enable(hsram->Instance, hsram->Init.NSBank);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_READY;
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hsram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Disables dynamically SRAM write operation.
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SRAM_WriteOperation_Disable(SRAM_HandleTypeDef *hsram)
+{
+ /* Process Locked */
+ __HAL_LOCK(hsram);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_BUSY;
+
+ /* Disable write operation */
+ FMC_NORSRAM_WriteOperation_Disable(hsram->Instance, hsram->Init.NSBank);
+
+ /* Update the SRAM controller state */
+ hsram->State = HAL_SRAM_STATE_PROTECTED;
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hsram);
+
+ return HAL_OK;
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup SRAM_Exported_Functions_Group4 State functions
+ * @brief Peripheral State functions
+ *
+@verbatim
+ ==============================================================================
+ ##### SRAM State functions #####
+ ==============================================================================
+ [..]
+ This subsection permits to get in run-time the status of the SRAM controller
+ and the data flow.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Returns the SRAM controller state
+ * @param hsram: pointer to a SRAM_HandleTypeDef structure that contains
+ * the configuration information for SRAM module.
+ * @retval HAL state
+ */
+HAL_SRAM_StateTypeDef HAL_SRAM_GetState(SRAM_HandleTypeDef *hsram)
+{
+ return hsram->State;
+}
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+#endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx */
+#endif /* HAL_SRAM_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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