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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sdram.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sdram.c | 843 |
1 files changed, 843 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sdram.c b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sdram.c new file mode 100644 index 0000000000..dfbf9e3a92 --- /dev/null +++ b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sdram.c @@ -0,0 +1,843 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_sdram.c + * @author MCD Application Team + * @version V1.4.0 + * @date 14-August-2015 + * @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) 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 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) +{ + /* 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) +{ + /* 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) +{ + /* 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) +{ + /* 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) +{ + /* 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 != 0; 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 = 0; + + /* 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 != 0; 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 != 0; 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 = 0; + + /* 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 != 0; 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 != 0; 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 = 0; + + /* 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 != 0; 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 = 0; + + /* 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 = 0; + + /* 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****/ |