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- /**
- ******************************************************************************
- * @file stm32f1xx_hal_sram.c
- * @author MCD Application Team
- * @brief SRAM HAL module driver.
- * This file provides a generic firmware to drive SRAM memories
- * mounted as external device.
- *
- ******************************************************************************
- * @attention
- *
- * Copyright (c) 2016 STMicroelectronics.
- * All rights reserved.
- *
- * This software is licensed under terms that can be found in the LICENSE file
- * in the root directory of this software component.
- * If no LICENSE file comes with this software, it is provided AS-IS.
- *
- ******************************************************************************
- @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 FSMC layer functions to interface
- with SRAM devices.
- The following sequence should be followed to configure the 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 FSMC_NORSRAM_TimingTypeDef structures, for both normal and extended
- mode timings; for example:
- FSMC_NORSRAM_TimingTypeDef Timing and FSMC_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 FSMC NORSRAM interface function
- FSMC_NORSRAM_Init()
- (##) Timing register configuration using the FSMC NORSRAM interface function
- FSMC_NORSRAM_Timing_Init()
- (##) Extended mode Timing register configuration using the FSMC NORSRAM interface function
- FSMC_NORSRAM_Extended_Timing_Init()
- (##) Enable the SRAM device using the macro __FSMC_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()
- *** Callback registration ***
- =============================================
- [..]
- The compilation define USE_HAL_SRAM_REGISTER_CALLBACKS when set to 1
- allows the user to configure dynamically the driver callbacks.
- Use Functions HAL_SRAM_RegisterCallback() to register a user callback,
- it allows to register following callbacks:
- (+) MspInitCallback : SRAM MspInit.
- (+) MspDeInitCallback : SRAM MspDeInit.
- This function takes as parameters the HAL peripheral handle, the Callback ID
- and a pointer to the user callback function.
- Use function HAL_SRAM_UnRegisterCallback() to reset a callback to the default
- weak (overridden) function. It allows to reset following callbacks:
- (+) MspInitCallback : SRAM MspInit.
- (+) MspDeInitCallback : SRAM MspDeInit.
- This function) takes as parameters the HAL peripheral handle and the Callback ID.
- By default, after the HAL_SRAM_Init and if the state is HAL_SRAM_STATE_RESET
- all callbacks are reset to the corresponding legacy weak (overridden) functions.
- Exception done for MspInit and MspDeInit callbacks that are respectively
- reset to the legacy weak (overridden) functions in the HAL_SRAM_Init
- and HAL_SRAM_DeInit only when these callbacks are null (not registered beforehand).
- If not, MspInit or MspDeInit are not null, the HAL_SRAM_Init and HAL_SRAM_DeInit
- keep and use the user MspInit/MspDeInit callbacks (registered beforehand)
- Callbacks can be registered/unregistered in READY state only.
- Exception done for MspInit/MspDeInit callbacks that can be registered/unregistered
- in READY or RESET state, thus registered (user) MspInit/DeInit callbacks can be used
- during the Init/DeInit.
- In that case first register the MspInit/MspDeInit user callbacks
- using HAL_SRAM_RegisterCallback before calling HAL_SRAM_DeInit
- or HAL_SRAM_Init function.
- When The compilation define USE_HAL_SRAM_REGISTER_CALLBACKS is set to 0 or
- not defined, the callback registering feature is not available
- and weak (overridden) callbacks are used.
- @endverbatim
- ******************************************************************************
- */
- /* Includes ------------------------------------------------------------------*/
- #include "stm32f1xx_hal.h"
- #if defined(FSMC_BANK1)
- /** @addtogroup STM32F1xx_HAL_Driver
- * @{
- */
- #ifdef HAL_SRAM_MODULE_ENABLED
- /** @defgroup SRAM SRAM
- * @brief SRAM driver modules
- * @{
- */
- /* Private typedef -----------------------------------------------------------*/
- /* Private define ------------------------------------------------------------*/
- /* Private macro -------------------------------------------------------------*/
- /* Private variables ---------------------------------------------------------*/
- /* Private function prototypes -----------------------------------------------*/
- /** @addtogroup SRAM_Private_Functions SRAM Private Functions
- * @{
- */
- static void SRAM_DMACplt(DMA_HandleTypeDef *hdma);
- static void SRAM_DMACpltProt(DMA_HandleTypeDef *hdma);
- static void SRAM_DMAError(DMA_HandleTypeDef *hdma);
- /**
- * @}
- */
- /* 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, FSMC_NORSRAM_TimingTypeDef *Timing,
- FSMC_NORSRAM_TimingTypeDef *ExtTiming)
- {
- /* Check the SRAM handle parameter */
- if ((hsram == NULL) || (hsram->Init.BurstAccessMode == FSMC_BURST_ACCESS_MODE_ENABLE))
- {
- return HAL_ERROR;
- }
- if (hsram->State == HAL_SRAM_STATE_RESET)
- {
- /* Allocate lock resource and initialize it */
- hsram->Lock = HAL_UNLOCKED;
- #if (USE_HAL_SRAM_REGISTER_CALLBACKS == 1)
- if (hsram->MspInitCallback == NULL)
- {
- hsram->MspInitCallback = HAL_SRAM_MspInit;
- }
- hsram->DmaXferCpltCallback = HAL_SRAM_DMA_XferCpltCallback;
- hsram->DmaXferErrorCallback = HAL_SRAM_DMA_XferErrorCallback;
- /* Init the low level hardware */
- hsram->MspInitCallback(hsram);
- #else
- /* Initialize the low level hardware (MSP) */
- HAL_SRAM_MspInit(hsram);
- #endif /* USE_HAL_SRAM_REGISTER_CALLBACKS */
- }
- /* Initialize SRAM control Interface */
- (void)FSMC_NORSRAM_Init(hsram->Instance, &(hsram->Init));
- /* Initialize SRAM timing Interface */
- (void)FSMC_NORSRAM_Timing_Init(hsram->Instance, Timing, hsram->Init.NSBank);
- /* Initialize SRAM extended mode timing Interface */
- (void)FSMC_NORSRAM_Extended_Timing_Init(hsram->Extended, ExtTiming, hsram->Init.NSBank,
- hsram->Init.ExtendedMode);
- /* Enable the NORSRAM device */
- __FSMC_NORSRAM_ENABLE(hsram->Instance, hsram->Init.NSBank);
- /* Initialize the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_READY;
- 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)
- {
- #if (USE_HAL_SRAM_REGISTER_CALLBACKS == 1)
- if (hsram->MspDeInitCallback == NULL)
- {
- hsram->MspDeInitCallback = HAL_SRAM_MspDeInit;
- }
- /* DeInit the low level hardware */
- hsram->MspDeInitCallback(hsram);
- #else
- /* De-Initialize the low level hardware (MSP) */
- HAL_SRAM_MspDeInit(hsram);
- #endif /* USE_HAL_SRAM_REGISTER_CALLBACKS */
- /* Configure the SRAM registers with their reset values */
- (void)FSMC_NORSRAM_DeInit(hsram->Instance, hsram->Extended, hsram->Init.NSBank);
- /* Reset the SRAM controller state */
- 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)
- {
- /* Prevent unused argument(s) compilation warning */
- UNUSED(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)
- {
- /* Prevent unused argument(s) compilation warning */
- UNUSED(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)
- {
- /* Prevent unused argument(s) compilation warning */
- UNUSED(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)
- {
- /* Prevent unused argument(s) compilation warning */
- UNUSED(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 Output and memory control 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)
- {
- uint32_t size;
- __IO uint8_t *psramaddress = (uint8_t *)pAddress;
- uint8_t *pdestbuff = pDstBuffer;
- HAL_SRAM_StateTypeDef state = hsram->State;
- /* Check the SRAM controller state */
- if ((state == HAL_SRAM_STATE_READY) || (state == HAL_SRAM_STATE_PROTECTED))
- {
- /* Process Locked */
- __HAL_LOCK(hsram);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_BUSY;
- /* Read data from memory */
- for (size = BufferSize; size != 0U; size--)
- {
- *pdestbuff = *psramaddress;
- pdestbuff++;
- psramaddress++;
- }
- /* Update the SRAM controller state */
- hsram->State = state;
- /* Process unlocked */
- __HAL_UNLOCK(hsram);
- }
- else
- {
- return HAL_ERROR;
- }
- 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)
- {
- uint32_t size;
- __IO uint8_t *psramaddress = (uint8_t *)pAddress;
- uint8_t *psrcbuff = pSrcBuffer;
- /* Check the SRAM controller state */
- if (hsram->State == HAL_SRAM_STATE_READY)
- {
- /* Process Locked */
- __HAL_LOCK(hsram);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_BUSY;
- /* Write data to memory */
- for (size = BufferSize; size != 0U; size--)
- {
- *psramaddress = *psrcbuff;
- psrcbuff++;
- psramaddress++;
- }
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_READY;
- /* Process unlocked */
- __HAL_UNLOCK(hsram);
- }
- else
- {
- return HAL_ERROR;
- }
- 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)
- {
- uint32_t size;
- __IO uint32_t *psramaddress = pAddress;
- uint16_t *pdestbuff = pDstBuffer;
- uint8_t limit;
- HAL_SRAM_StateTypeDef state = hsram->State;
- /* Check the SRAM controller state */
- if ((state == HAL_SRAM_STATE_READY) || (state == HAL_SRAM_STATE_PROTECTED))
- {
- /* Process Locked */
- __HAL_LOCK(hsram);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_BUSY;
- /* Check if the size is a 32-bits multiple */
- limit = (((BufferSize % 2U) != 0U) ? 1U : 0U);
- /* Read data from memory */
- for (size = BufferSize; size != limit; size -= 2U)
- {
- *pdestbuff = (uint16_t)((*psramaddress) & 0x0000FFFFU);
- pdestbuff++;
- *pdestbuff = (uint16_t)(((*psramaddress) & 0xFFFF0000U) >> 16U);
- pdestbuff++;
- psramaddress++;
- }
- /* Read last 16-bits if size is not 32-bits multiple */
- if (limit != 0U)
- {
- *pdestbuff = (uint16_t)((*psramaddress) & 0x0000FFFFU);
- }
- /* Update the SRAM controller state */
- hsram->State = state;
- /* Process unlocked */
- __HAL_UNLOCK(hsram);
- }
- else
- {
- return HAL_ERROR;
- }
- 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)
- {
- uint32_t size;
- __IO uint32_t *psramaddress = pAddress;
- uint16_t *psrcbuff = pSrcBuffer;
- uint8_t limit;
- /* Check the SRAM controller state */
- if (hsram->State == HAL_SRAM_STATE_READY)
- {
- /* Process Locked */
- __HAL_LOCK(hsram);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_BUSY;
- /* Check if the size is a 32-bits multiple */
- limit = (((BufferSize % 2U) != 0U) ? 1U : 0U);
- /* Write data to memory */
- for (size = BufferSize; size != limit; size -= 2U)
- {
- *psramaddress = (uint32_t)(*psrcbuff);
- psrcbuff++;
- *psramaddress |= ((uint32_t)(*psrcbuff) << 16U);
- psrcbuff++;
- psramaddress++;
- }
- /* Write last 16-bits if size is not 32-bits multiple */
- if (limit != 0U)
- {
- *psramaddress = ((uint32_t)(*psrcbuff) & 0x0000FFFFU) | ((*psramaddress) & 0xFFFF0000U);
- }
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_READY;
- /* Process unlocked */
- __HAL_UNLOCK(hsram);
- }
- else
- {
- return HAL_ERROR;
- }
- 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)
- {
- uint32_t size;
- __IO uint32_t *psramaddress = pAddress;
- uint32_t *pdestbuff = pDstBuffer;
- HAL_SRAM_StateTypeDef state = hsram->State;
- /* Check the SRAM controller state */
- if ((state == HAL_SRAM_STATE_READY) || (state == HAL_SRAM_STATE_PROTECTED))
- {
- /* Process Locked */
- __HAL_LOCK(hsram);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_BUSY;
- /* Read data from memory */
- for (size = BufferSize; size != 0U; size--)
- {
- *pdestbuff = *psramaddress;
- pdestbuff++;
- psramaddress++;
- }
- /* Update the SRAM controller state */
- hsram->State = state;
- /* Process unlocked */
- __HAL_UNLOCK(hsram);
- }
- else
- {
- return HAL_ERROR;
- }
- 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)
- {
- uint32_t size;
- __IO uint32_t *psramaddress = pAddress;
- uint32_t *psrcbuff = pSrcBuffer;
- /* Check the SRAM controller state */
- if (hsram->State == HAL_SRAM_STATE_READY)
- {
- /* Process Locked */
- __HAL_LOCK(hsram);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_BUSY;
- /* Write data to memory */
- for (size = BufferSize; size != 0U; size--)
- {
- *psramaddress = *psrcbuff;
- psrcbuff++;
- psramaddress++;
- }
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_READY;
- /* Process unlocked */
- __HAL_UNLOCK(hsram);
- }
- else
- {
- return HAL_ERROR;
- }
- 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)
- {
- HAL_StatusTypeDef status;
- HAL_SRAM_StateTypeDef state = hsram->State;
- /* Check the SRAM controller state */
- if ((state == HAL_SRAM_STATE_READY) || (state == HAL_SRAM_STATE_PROTECTED))
- {
- /* Process Locked */
- __HAL_LOCK(hsram);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_BUSY;
- /* Configure DMA user callbacks */
- if (state == HAL_SRAM_STATE_READY)
- {
- hsram->hdma->XferCpltCallback = SRAM_DMACplt;
- }
- else
- {
- hsram->hdma->XferCpltCallback = SRAM_DMACpltProt;
- }
- hsram->hdma->XferErrorCallback = SRAM_DMAError;
- /* Enable the DMA Stream */
- status = HAL_DMA_Start_IT(hsram->hdma, (uint32_t)pAddress, (uint32_t)pDstBuffer, (uint32_t)BufferSize);
- /* Process unlocked */
- __HAL_UNLOCK(hsram);
- }
- else
- {
- status = HAL_ERROR;
- }
- return status;
- }
- /**
- * @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)
- {
- HAL_StatusTypeDef status;
- /* Check the SRAM controller state */
- if (hsram->State == HAL_SRAM_STATE_READY)
- {
- /* Process Locked */
- __HAL_LOCK(hsram);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_BUSY;
- /* Configure DMA user callbacks */
- hsram->hdma->XferCpltCallback = SRAM_DMACplt;
- hsram->hdma->XferErrorCallback = SRAM_DMAError;
- /* Enable the DMA Stream */
- status = HAL_DMA_Start_IT(hsram->hdma, (uint32_t)pSrcBuffer, (uint32_t)pAddress, (uint32_t)BufferSize);
- /* Process unlocked */
- __HAL_UNLOCK(hsram);
- }
- else
- {
- status = HAL_ERROR;
- }
- return status;
- }
- #if (USE_HAL_SRAM_REGISTER_CALLBACKS == 1)
- /**
- * @brief Register a User SRAM Callback
- * To be used to override the weak predefined callback
- * @param hsram : SRAM handle
- * @param CallbackId : ID of the callback to be registered
- * This parameter can be one of the following values:
- * @arg @ref HAL_SRAM_MSP_INIT_CB_ID SRAM MspInit callback ID
- * @arg @ref HAL_SRAM_MSP_DEINIT_CB_ID SRAM MspDeInit callback ID
- * @param pCallback : pointer to the Callback function
- * @retval status
- */
- HAL_StatusTypeDef HAL_SRAM_RegisterCallback(SRAM_HandleTypeDef *hsram, HAL_SRAM_CallbackIDTypeDef CallbackId,
- pSRAM_CallbackTypeDef pCallback)
- {
- HAL_StatusTypeDef status = HAL_OK;
- HAL_SRAM_StateTypeDef state;
- if (pCallback == NULL)
- {
- return HAL_ERROR;
- }
- state = hsram->State;
- if ((state == HAL_SRAM_STATE_READY) || (state == HAL_SRAM_STATE_RESET) || (state == HAL_SRAM_STATE_PROTECTED))
- {
- switch (CallbackId)
- {
- case HAL_SRAM_MSP_INIT_CB_ID :
- hsram->MspInitCallback = pCallback;
- break;
- case HAL_SRAM_MSP_DEINIT_CB_ID :
- hsram->MspDeInitCallback = pCallback;
- break;
- default :
- /* update return status */
- status = HAL_ERROR;
- break;
- }
- }
- else
- {
- /* update return status */
- status = HAL_ERROR;
- }
- return status;
- }
- /**
- * @brief Unregister a User SRAM Callback
- * SRAM Callback is redirected to the weak predefined callback
- * @param hsram : SRAM handle
- * @param CallbackId : ID of the callback to be unregistered
- * This parameter can be one of the following values:
- * @arg @ref HAL_SRAM_MSP_INIT_CB_ID SRAM MspInit callback ID
- * @arg @ref HAL_SRAM_MSP_DEINIT_CB_ID SRAM MspDeInit callback ID
- * @arg @ref HAL_SRAM_DMA_XFER_CPLT_CB_ID SRAM DMA Xfer Complete callback ID
- * @arg @ref HAL_SRAM_DMA_XFER_ERR_CB_ID SRAM DMA Xfer Error callback ID
- * @retval status
- */
- HAL_StatusTypeDef HAL_SRAM_UnRegisterCallback(SRAM_HandleTypeDef *hsram, HAL_SRAM_CallbackIDTypeDef CallbackId)
- {
- HAL_StatusTypeDef status = HAL_OK;
- HAL_SRAM_StateTypeDef state;
- state = hsram->State;
- if ((state == HAL_SRAM_STATE_READY) || (state == HAL_SRAM_STATE_PROTECTED))
- {
- switch (CallbackId)
- {
- case HAL_SRAM_MSP_INIT_CB_ID :
- hsram->MspInitCallback = HAL_SRAM_MspInit;
- break;
- case HAL_SRAM_MSP_DEINIT_CB_ID :
- hsram->MspDeInitCallback = HAL_SRAM_MspDeInit;
- break;
- case HAL_SRAM_DMA_XFER_CPLT_CB_ID :
- hsram->DmaXferCpltCallback = HAL_SRAM_DMA_XferCpltCallback;
- break;
- case HAL_SRAM_DMA_XFER_ERR_CB_ID :
- hsram->DmaXferErrorCallback = HAL_SRAM_DMA_XferErrorCallback;
- break;
- default :
- /* update return status */
- status = HAL_ERROR;
- break;
- }
- }
- else if (state == HAL_SRAM_STATE_RESET)
- {
- switch (CallbackId)
- {
- case HAL_SRAM_MSP_INIT_CB_ID :
- hsram->MspInitCallback = HAL_SRAM_MspInit;
- break;
- case HAL_SRAM_MSP_DEINIT_CB_ID :
- hsram->MspDeInitCallback = HAL_SRAM_MspDeInit;
- break;
- default :
- /* update return status */
- status = HAL_ERROR;
- break;
- }
- }
- else
- {
- /* update return status */
- status = HAL_ERROR;
- }
- return status;
- }
- /**
- * @brief Register a User SRAM Callback for DMA transfers
- * To be used to override the weak predefined callback
- * @param hsram : SRAM handle
- * @param CallbackId : ID of the callback to be registered
- * This parameter can be one of the following values:
- * @arg @ref HAL_SRAM_DMA_XFER_CPLT_CB_ID SRAM DMA Xfer Complete callback ID
- * @arg @ref HAL_SRAM_DMA_XFER_ERR_CB_ID SRAM DMA Xfer Error callback ID
- * @param pCallback : pointer to the Callback function
- * @retval status
- */
- HAL_StatusTypeDef HAL_SRAM_RegisterDmaCallback(SRAM_HandleTypeDef *hsram, HAL_SRAM_CallbackIDTypeDef CallbackId,
- pSRAM_DmaCallbackTypeDef pCallback)
- {
- HAL_StatusTypeDef status = HAL_OK;
- HAL_SRAM_StateTypeDef state;
- if (pCallback == NULL)
- {
- return HAL_ERROR;
- }
- /* Process locked */
- __HAL_LOCK(hsram);
- state = hsram->State;
- if ((state == HAL_SRAM_STATE_READY) || (state == HAL_SRAM_STATE_PROTECTED))
- {
- switch (CallbackId)
- {
- case HAL_SRAM_DMA_XFER_CPLT_CB_ID :
- hsram->DmaXferCpltCallback = pCallback;
- break;
- case HAL_SRAM_DMA_XFER_ERR_CB_ID :
- hsram->DmaXferErrorCallback = pCallback;
- break;
- default :
- /* update return status */
- status = HAL_ERROR;
- break;
- }
- }
- else
- {
- /* update return status */
- status = HAL_ERROR;
- }
- /* Release Lock */
- __HAL_UNLOCK(hsram);
- return status;
- }
- #endif /* USE_HAL_SRAM_REGISTER_CALLBACKS */
- /**
- * @}
- */
- /** @defgroup SRAM_Exported_Functions_Group3 Control functions
- * @brief Control 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)
- {
- /* Check the SRAM controller state */
- if (hsram->State == HAL_SRAM_STATE_PROTECTED)
- {
- /* Process Locked */
- __HAL_LOCK(hsram);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_BUSY;
- /* Enable write operation */
- (void)FSMC_NORSRAM_WriteOperation_Enable(hsram->Instance, hsram->Init.NSBank);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_READY;
- /* Process unlocked */
- __HAL_UNLOCK(hsram);
- }
- else
- {
- return HAL_ERROR;
- }
- 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)
- {
- /* Check the SRAM controller state */
- if (hsram->State == HAL_SRAM_STATE_READY)
- {
- /* Process Locked */
- __HAL_LOCK(hsram);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_BUSY;
- /* Disable write operation */
- (void)FSMC_NORSRAM_WriteOperation_Disable(hsram->Instance, hsram->Init.NSBank);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_PROTECTED;
- /* Process unlocked */
- __HAL_UNLOCK(hsram);
- }
- else
- {
- return HAL_ERROR;
- }
- return HAL_OK;
- }
- /**
- * @}
- */
- /** @defgroup SRAM_Exported_Functions_Group4 Peripheral 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(const SRAM_HandleTypeDef *hsram)
- {
- return hsram->State;
- }
- /**
- * @}
- */
- /**
- * @}
- */
- /** @addtogroup SRAM_Private_Functions SRAM Private Functions
- * @{
- */
- /**
- * @brief DMA SRAM process complete callback.
- * @param hdma : DMA handle
- * @retval None
- */
- static void SRAM_DMACplt(DMA_HandleTypeDef *hdma)
- {
- SRAM_HandleTypeDef *hsram = (SRAM_HandleTypeDef *)(hdma->Parent);
- /* Disable the DMA channel */
- __HAL_DMA_DISABLE(hdma);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_READY;
- #if (USE_HAL_SRAM_REGISTER_CALLBACKS == 1)
- hsram->DmaXferCpltCallback(hdma);
- #else
- HAL_SRAM_DMA_XferCpltCallback(hdma);
- #endif /* USE_HAL_SRAM_REGISTER_CALLBACKS */
- }
- /**
- * @brief DMA SRAM process complete callback.
- * @param hdma : DMA handle
- * @retval None
- */
- static void SRAM_DMACpltProt(DMA_HandleTypeDef *hdma)
- {
- SRAM_HandleTypeDef *hsram = (SRAM_HandleTypeDef *)(hdma->Parent);
- /* Disable the DMA channel */
- __HAL_DMA_DISABLE(hdma);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_PROTECTED;
- #if (USE_HAL_SRAM_REGISTER_CALLBACKS == 1)
- hsram->DmaXferCpltCallback(hdma);
- #else
- HAL_SRAM_DMA_XferCpltCallback(hdma);
- #endif /* USE_HAL_SRAM_REGISTER_CALLBACKS */
- }
- /**
- * @brief DMA SRAM error callback.
- * @param hdma : DMA handle
- * @retval None
- */
- static void SRAM_DMAError(DMA_HandleTypeDef *hdma)
- {
- SRAM_HandleTypeDef *hsram = (SRAM_HandleTypeDef *)(hdma->Parent);
- /* Disable the DMA channel */
- __HAL_DMA_DISABLE(hdma);
- /* Update the SRAM controller state */
- hsram->State = HAL_SRAM_STATE_ERROR;
- #if (USE_HAL_SRAM_REGISTER_CALLBACKS == 1)
- hsram->DmaXferErrorCallback(hdma);
- #else
- HAL_SRAM_DMA_XferErrorCallback(hdma);
- #endif /* USE_HAL_SRAM_REGISTER_CALLBACKS */
- }
- /**
- * @}
- */
- /**
- * @}
- */
- #endif /* HAL_SRAM_MODULE_ENABLED */
- /**
- * @}
- */
- #endif /* FSMC_BANK1 */
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