Thomas Lyp
Initial commit
Diff: mbed-dev-master/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_sdram.c
- Revision:
- 0:bb348c97df44
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-dev-master/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_sdram.c Wed Sep 16 01:11:49 2020 +0000
@@ -0,0 +1,851 @@
+/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_sdram.c
+ * @author MCD Application Team
+ * @brief SDRAM HAL module driver.
+ * This file provides a generic firmware to drive SDRAM 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 SDRAM memories. It uses the FMC layer functions to interface
+ with SDRAM devices.
+ The following sequence should be followed to configure the FMC to interface
+ with SDRAM memories:
+
+ (#) Declare a SDRAM_HandleTypeDef handle structure, for example:
+ SDRAM_HandleTypeDef hdsram
+
+ (++) Fill the SDRAM_HandleTypeDef handle "Init" field with the allowed
+ values of the structure member.
+
+ (++) Fill the SDRAM_HandleTypeDef handle "Instance" field with a predefined
+ base register instance for NOR or SDRAM device
+
+ (#) Declare a FMC_SDRAM_TimingTypeDef structure; for example:
+ FMC_SDRAM_TimingTypeDef Timing;
+ and fill its fields with the allowed values of the structure member.
+
+ (#) Initialize the SDRAM Controller by calling the function HAL_SDRAM_Init(). This function
+ performs the following sequence:
+
+ (##) MSP hardware layer configuration using the function HAL_SDRAM_MspInit()
+ (##) Control register configuration using the FMC SDRAM interface function
+ FMC_SDRAM_Init()
+ (##) Timing register configuration using the FMC SDRAM interface function
+ FMC_SDRAM_Timing_Init()
+ (##) Program the SDRAM external device by applying its initialization sequence
+ according to the device plugged in your hardware. This step is mandatory
+ for accessing the SDRAM device.
+
+ (#) At this stage you can perform read/write accesses from/to the memory connected
+ to the SDRAM Bank. You can perform either polling or DMA transfer using the
+ following APIs:
+ (++) HAL_SDRAM_Read()/HAL_SDRAM_Write() for polling read/write access
+ (++) HAL_SDRAM_Read_DMA()/HAL_SDRAM_Write_DMA() for DMA read/write transfer
+
+ (#) You can also control the SDRAM device by calling the control APIs HAL_SDRAM_WriteOperation_Enable()/
+ HAL_SDRAM_WriteOperation_Disable() to respectively enable/disable the SDRAM write operation or
+ the function HAL_SDRAM_SendCommand() to send a specified command to the SDRAM
+ device. The command to be sent must be configured with the FMC_SDRAM_CommandTypeDef
+ structure.
+
+ (#) You can continuously monitor the SDRAM device HAL state by calling the function
+ HAL_SDRAM_GetState()
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2017 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 SDRAM SDRAM
+ * @brief SDRAM driver modules
+ * @{
+ */
+#ifdef HAL_SDRAM_MODULE_ENABLED
+#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\
+ defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx)
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup SDRAM_Exported_Functions SDRAM Exported Functions
+ * @{
+ */
+
+/** @defgroup SDRAM_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @brief Initialization and Configuration functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### SDRAM Initialization and de_initialization functions #####
+ ==============================================================================
+ [..]
+ This section provides functions allowing to initialize/de-initialize
+ the SDRAM memory
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Performs the SDRAM device initialization sequence.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @param Timing Pointer to SDRAM control timing structure
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SDRAM_Init(SDRAM_HandleTypeDef *hsdram, FMC_SDRAM_TimingTypeDef *Timing)
+{
+ /* Check the SDRAM handle parameter */
+ if(hsdram == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ if(hsdram->State == HAL_SDRAM_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ hsdram->Lock = HAL_UNLOCKED;
+ /* Initialize the low level hardware (MSP) */
+ HAL_SDRAM_MspInit(hsdram);
+ }
+
+ /* Initialize the SDRAM controller state */
+ hsdram->State = HAL_SDRAM_STATE_BUSY;
+
+ /* Initialize SDRAM control Interface */
+ FMC_SDRAM_Init(hsdram->Instance, &(hsdram->Init));
+
+ /* Initialize SDRAM timing Interface */
+ FMC_SDRAM_Timing_Init(hsdram->Instance, Timing, hsdram->Init.SDBank);
+
+ /* Update the SDRAM controller state */
+ hsdram->State = HAL_SDRAM_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Perform the SDRAM device initialization sequence.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SDRAM_DeInit(SDRAM_HandleTypeDef *hsdram)
+{
+ /* Initialize the low level hardware (MSP) */
+ HAL_SDRAM_MspDeInit(hsdram);
+
+ /* Configure the SDRAM registers with their reset values */
+ FMC_SDRAM_DeInit(hsdram->Instance, hsdram->Init.SDBank);
+
+ /* Reset the SDRAM controller state */
+ hsdram->State = HAL_SDRAM_STATE_RESET;
+
+ /* Release Lock */
+ __HAL_UNLOCK(hsdram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief SDRAM MSP Init.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @retval None
+ */
+__weak void HAL_SDRAM_MspInit(SDRAM_HandleTypeDef *hsdram)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsdram);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_SDRAM_MspInit could be implemented in the user file
+ */
+}
+
+/**
+ * @brief SDRAM MSP DeInit.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @retval None
+ */
+__weak void HAL_SDRAM_MspDeInit(SDRAM_HandleTypeDef *hsdram)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsdram);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_SDRAM_MspDeInit could be implemented in the user file
+ */
+}
+
+/**
+ * @brief This function handles SDRAM refresh error interrupt request.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @retval HAL status
+*/
+void HAL_SDRAM_IRQHandler(SDRAM_HandleTypeDef *hsdram)
+{
+ /* Check SDRAM interrupt Rising edge flag */
+ if(__FMC_SDRAM_GET_FLAG(hsdram->Instance, FMC_SDRAM_FLAG_REFRESH_IT))
+ {
+ /* SDRAM refresh error interrupt callback */
+ HAL_SDRAM_RefreshErrorCallback(hsdram);
+
+ /* Clear SDRAM refresh error interrupt pending bit */
+ __FMC_SDRAM_CLEAR_FLAG(hsdram->Instance, FMC_SDRAM_FLAG_REFRESH_ERROR);
+ }
+}
+
+/**
+ * @brief SDRAM Refresh error callback.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @retval None
+ */
+__weak void HAL_SDRAM_RefreshErrorCallback(SDRAM_HandleTypeDef *hsdram)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hsdram);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_SDRAM_RefreshErrorCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief DMA transfer complete callback.
+ * @param hdma pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA module.
+ * @retval None
+ */
+__weak void HAL_SDRAM_DMA_XferCpltCallback(DMA_HandleTypeDef *hdma)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hdma);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_SDRAM_DMA_XferCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief DMA transfer complete error callback.
+ * @param hdma DMA handle
+ * @retval None
+ */
+__weak void HAL_SDRAM_DMA_XferErrorCallback(DMA_HandleTypeDef *hdma)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hdma);
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_SDRAM_DMA_XferErrorCallback could be implemented in the user file
+ */
+}
+/**
+ * @}
+ */
+
+/** @defgroup SDRAM_Exported_Functions_Group2 Input and Output functions
+ * @brief Input Output and memory control functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### SDRAM Input and Output functions #####
+ ==============================================================================
+ [..]
+ This section provides functions allowing to use and control the SDRAM memory
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Reads 8-bit data buffer from the SDRAM memory.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM 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_SDRAM_Read_8b(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint8_t *pDstBuffer, uint32_t BufferSize)
+{
+ __IO uint8_t *pSdramAddress = (uint8_t *)pAddress;
+
+ /* Process Locked */
+ __HAL_LOCK(hsdram);
+
+ /* Check the SDRAM controller state */
+ if(hsdram->State == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+ else if(hsdram->State == HAL_SDRAM_STATE_PRECHARGED)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Read data from source */
+ for(; BufferSize != 0U; BufferSize--)
+ {
+ *pDstBuffer = *(__IO uint8_t *)pSdramAddress;
+ pDstBuffer++;
+ pSdramAddress++;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsdram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Writes 8-bit data buffer to SDRAM memory.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM 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_SDRAM_Write_8b(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint8_t *pSrcBuffer, uint32_t BufferSize)
+{
+ __IO uint8_t *pSdramAddress = (uint8_t *)pAddress;
+ uint32_t tmp = 0U;
+
+ /* Process Locked */
+ __HAL_LOCK(hsdram);
+
+ /* Check the SDRAM controller state */
+ tmp = hsdram->State;
+
+ if(tmp == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+ else if((tmp == HAL_SDRAM_STATE_PRECHARGED) || (tmp == HAL_SDRAM_STATE_WRITE_PROTECTED))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Write data to memory */
+ for(; BufferSize != 0U; BufferSize--)
+ {
+ *(__IO uint8_t *)pSdramAddress = *pSrcBuffer;
+ pSrcBuffer++;
+ pSdramAddress++;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsdram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Reads 16-bit data buffer from the SDRAM memory.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM 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_SDRAM_Read_16b(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint16_t *pDstBuffer, uint32_t BufferSize)
+{
+ __IO uint16_t *pSdramAddress = (uint16_t *)pAddress;
+
+ /* Process Locked */
+ __HAL_LOCK(hsdram);
+
+ /* Check the SDRAM controller state */
+ if(hsdram->State == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+ else if(hsdram->State == HAL_SDRAM_STATE_PRECHARGED)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Read data from source */
+ for(; BufferSize != 0U; BufferSize--)
+ {
+ *pDstBuffer = *(__IO uint16_t *)pSdramAddress;
+ pDstBuffer++;
+ pSdramAddress++;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsdram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Writes 16-bit data buffer to SDRAM memory.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM 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_SDRAM_Write_16b(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint16_t *pSrcBuffer, uint32_t BufferSize)
+{
+ __IO uint16_t *pSdramAddress = (uint16_t *)pAddress;
+ uint32_t tmp = 0U;
+
+ /* Process Locked */
+ __HAL_LOCK(hsdram);
+
+ /* Check the SDRAM controller state */
+ tmp = hsdram->State;
+
+ if(tmp == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+ else if((tmp == HAL_SDRAM_STATE_PRECHARGED) || (tmp == HAL_SDRAM_STATE_WRITE_PROTECTED))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Write data to memory */
+ for(; BufferSize != 0U; BufferSize--)
+ {
+ *(__IO uint16_t *)pSdramAddress = *pSrcBuffer;
+ pSrcBuffer++;
+ pSdramAddress++;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsdram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Reads 32-bit data buffer from the SDRAM memory.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM 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_SDRAM_Read_32b(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint32_t *pDstBuffer, uint32_t BufferSize)
+{
+ __IO uint32_t *pSdramAddress = (uint32_t *)pAddress;
+
+ /* Process Locked */
+ __HAL_LOCK(hsdram);
+
+ /* Check the SDRAM controller state */
+ if(hsdram->State == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+ else if(hsdram->State == HAL_SDRAM_STATE_PRECHARGED)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Read data from source */
+ for(; BufferSize != 0U; BufferSize--)
+ {
+ *pDstBuffer = *(__IO uint32_t *)pSdramAddress;
+ pDstBuffer++;
+ pSdramAddress++;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsdram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Writes 32-bit data buffer to SDRAM memory.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM 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_SDRAM_Write_32b(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint32_t *pSrcBuffer, uint32_t BufferSize)
+{
+ __IO uint32_t *pSdramAddress = (uint32_t *)pAddress;
+ uint32_t tmp = 0U;
+
+ /* Process Locked */
+ __HAL_LOCK(hsdram);
+
+ /* Check the SDRAM controller state */
+ tmp = hsdram->State;
+
+ if(tmp == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+ else if((tmp == HAL_SDRAM_STATE_PRECHARGED) || (tmp == HAL_SDRAM_STATE_WRITE_PROTECTED))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Write data to memory */
+ for(; BufferSize != 0U; BufferSize--)
+ {
+ *(__IO uint32_t *)pSdramAddress = *pSrcBuffer;
+ pSrcBuffer++;
+ pSdramAddress++;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsdram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Reads a Words data from the SDRAM memory using DMA transfer.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM 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_SDRAM_Read_DMA(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint32_t *pDstBuffer, uint32_t BufferSize)
+{
+ uint32_t tmp = 0U;
+
+ /* Process Locked */
+ __HAL_LOCK(hsdram);
+
+ /* Check the SDRAM controller state */
+ tmp = hsdram->State;
+
+ if(tmp == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+ else if(tmp == HAL_SDRAM_STATE_PRECHARGED)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Configure DMA user callbacks */
+ hsdram->hdma->XferCpltCallback = HAL_SDRAM_DMA_XferCpltCallback;
+ hsdram->hdma->XferErrorCallback = HAL_SDRAM_DMA_XferErrorCallback;
+
+ /* Enable the DMA Stream */
+ HAL_DMA_Start_IT(hsdram->hdma, (uint32_t)pAddress, (uint32_t)pDstBuffer, (uint32_t)BufferSize);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsdram);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Writes a Words data buffer to SDRAM memory using DMA transfer.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM 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_SDRAM_Write_DMA(SDRAM_HandleTypeDef *hsdram, uint32_t *pAddress, uint32_t *pSrcBuffer, uint32_t BufferSize)
+{
+ uint32_t tmp = 0U;
+
+ /* Process Locked */
+ __HAL_LOCK(hsdram);
+
+ /* Check the SDRAM controller state */
+ tmp = hsdram->State;
+
+ if(tmp == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+ else if((tmp == HAL_SDRAM_STATE_PRECHARGED) || (tmp == HAL_SDRAM_STATE_WRITE_PROTECTED))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Configure DMA user callbacks */
+ hsdram->hdma->XferCpltCallback = HAL_SDRAM_DMA_XferCpltCallback;
+ hsdram->hdma->XferErrorCallback = HAL_SDRAM_DMA_XferErrorCallback;
+
+ /* Enable the DMA Stream */
+ HAL_DMA_Start_IT(hsdram->hdma, (uint32_t)pSrcBuffer, (uint32_t)pAddress, (uint32_t)BufferSize);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hsdram);
+
+ return HAL_OK;
+}
+/**
+ * @}
+ */
+
+/** @defgroup SDRAM_Exported_Functions_Group3 Control functions
+ * @brief management functions
+ *
+@verbatim
+ ==============================================================================
+ ##### SDRAM Control functions #####
+ ==============================================================================
+ [..]
+ This subsection provides a set of functions allowing to control dynamically
+ the SDRAM interface.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Enables dynamically SDRAM write protection.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SDRAM_WriteProtection_Enable(SDRAM_HandleTypeDef *hsdram)
+{
+ /* Check the SDRAM controller state */
+ if(hsdram->State == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Update the SDRAM state */
+ hsdram->State = HAL_SDRAM_STATE_BUSY;
+
+ /* Enable write protection */
+ FMC_SDRAM_WriteProtection_Enable(hsdram->Instance, hsdram->Init.SDBank);
+
+ /* Update the SDRAM state */
+ hsdram->State = HAL_SDRAM_STATE_WRITE_PROTECTED;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Disables dynamically SDRAM write protection.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SDRAM_WriteProtection_Disable(SDRAM_HandleTypeDef *hsdram)
+{
+ /* Check the SDRAM controller state */
+ if(hsdram->State == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Update the SDRAM state */
+ hsdram->State = HAL_SDRAM_STATE_BUSY;
+
+ /* Disable write protection */
+ FMC_SDRAM_WriteProtection_Disable(hsdram->Instance, hsdram->Init.SDBank);
+
+ /* Update the SDRAM state */
+ hsdram->State = HAL_SDRAM_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Sends Command to the SDRAM bank.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @param Command SDRAM command structure
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SDRAM_SendCommand(SDRAM_HandleTypeDef *hsdram, FMC_SDRAM_CommandTypeDef *Command, uint32_t Timeout)
+{
+ /* Check the SDRAM controller state */
+ if(hsdram->State == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Update the SDRAM state */
+ hsdram->State = HAL_SDRAM_STATE_BUSY;
+
+ /* Send SDRAM command */
+ FMC_SDRAM_SendCommand(hsdram->Instance, Command, Timeout);
+
+ /* Update the SDRAM controller state */
+ if(Command->CommandMode == FMC_SDRAM_CMD_PALL)
+ {
+ hsdram->State = HAL_SDRAM_STATE_PRECHARGED;
+ }
+ else
+ {
+ hsdram->State = HAL_SDRAM_STATE_READY;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Programs the SDRAM Memory Refresh rate.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @param RefreshRate The SDRAM refresh rate value
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SDRAM_ProgramRefreshRate(SDRAM_HandleTypeDef *hsdram, uint32_t RefreshRate)
+{
+ /* Check the SDRAM controller state */
+ if(hsdram->State == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Update the SDRAM state */
+ hsdram->State = HAL_SDRAM_STATE_BUSY;
+
+ /* Program the refresh rate */
+ FMC_SDRAM_ProgramRefreshRate(hsdram->Instance ,RefreshRate);
+
+ /* Update the SDRAM state */
+ hsdram->State = HAL_SDRAM_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Sets the Number of consecutive SDRAM Memory auto Refresh commands.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @param AutoRefreshNumber The SDRAM auto Refresh number
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SDRAM_SetAutoRefreshNumber(SDRAM_HandleTypeDef *hsdram, uint32_t AutoRefreshNumber)
+{
+ /* Check the SDRAM controller state */
+ if(hsdram->State == HAL_SDRAM_STATE_BUSY)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Update the SDRAM state */
+ hsdram->State = HAL_SDRAM_STATE_BUSY;
+
+ /* Set the Auto-Refresh number */
+ FMC_SDRAM_SetAutoRefreshNumber(hsdram->Instance ,AutoRefreshNumber);
+
+ /* Update the SDRAM state */
+ hsdram->State = HAL_SDRAM_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Returns the SDRAM memory current mode.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @retval The SDRAM memory mode.
+ */
+uint32_t HAL_SDRAM_GetModeStatus(SDRAM_HandleTypeDef *hsdram)
+{
+ /* Return the SDRAM memory current mode */
+ return(FMC_SDRAM_GetModeStatus(hsdram->Instance, hsdram->Init.SDBank));
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup SDRAM_Exported_Functions_Group4 State functions
+ * @brief Peripheral State functions
+ *
+@verbatim
+ ==============================================================================
+ ##### SDRAM State functions #####
+ ==============================================================================
+ [..]
+ This subsection permits to get in run-time the status of the SDRAM controller
+ and the data flow.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Returns the SDRAM state.
+ * @param hsdram pointer to a SDRAM_HandleTypeDef structure that contains
+ * the configuration information for SDRAM module.
+ * @retval HAL state
+ */
+HAL_SDRAM_StateTypeDef HAL_SDRAM_GetState(SDRAM_HandleTypeDef *hsdram)
+{
+ return hsdram->State;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx || STM32F479xx */
+#endif /* HAL_SDRAM_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/