314 lines
9.8 KiB
C
314 lines
9.8 KiB
C
/**
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******************************************************************************
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* @file stm32h7xx_hal_sd_ex.c
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* @author MCD Application Team
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* @brief SD card Extended HAL module driver.
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* This file provides firmware functions to manage the following
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* functionalities of the Secure Digital (SD) peripheral:
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* + Extended features functions
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*
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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@verbatim
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==============================================================================
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##### How to use this driver #####
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==============================================================================
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[..]
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The SD Extension HAL driver can be used as follows:
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(+) Configure Buffer0 and Buffer1 start address and Buffer size using HAL_SDEx_ConfigDMAMultiBuffer() function.
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(+) Start Read and Write for multibuffer mode using HAL_SDEx_ReadBlocksDMAMultiBuffer()
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and HAL_SDEx_WriteBlocksDMAMultiBuffer() functions.
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@endverbatim
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32h7xx_hal.h"
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/** @addtogroup STM32H7xx_HAL_Driver
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* @{
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*/
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/** @defgroup SDEx SDEx
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* @brief SD Extended HAL module driver
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* @{
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*/
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#ifdef HAL_SD_MODULE_ENABLED
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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/** @addtogroup SDEx_Exported_Functions
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* @{
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*/
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/** @addtogroup SDEx_Exported_Functions_Group1
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* @brief Multibuffer functions
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*
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@verbatim
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==============================================================================
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##### Multibuffer functions #####
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==============================================================================
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[..]
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This section provides functions allowing to configure the multibuffer mode and start read and write
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multibuffer mode for SD HAL driver.
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@endverbatim
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* @{
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*/
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/**
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* @brief Configure DMA Dual Buffer mode. The Data transfer is managed by an Internal DMA.
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* @param hsd: SD handle
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* @param pDataBuffer0: Pointer to the buffer0 that will contain/receive the transferred data
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* @param pDataBuffer1: Pointer to the buffer1 that will contain/receive the transferred data
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* @param BufferSize: Size of Buffer0 in Blocks. Buffer0 and Buffer1 must have the same size.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_SDEx_ConfigDMAMultiBuffer(SD_HandleTypeDef *hsd, uint32_t *pDataBuffer0, uint32_t *pDataBuffer1,
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uint32_t BufferSize)
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{
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if (hsd->State == HAL_SD_STATE_READY)
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{
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hsd->Instance->IDMABASE0 = (uint32_t) pDataBuffer0;
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hsd->Instance->IDMABASE1 = (uint32_t) pDataBuffer1;
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hsd->Instance->IDMABSIZE = (uint32_t)(BLOCKSIZE * BufferSize);
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return HAL_OK;
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}
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else
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{
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return HAL_BUSY;
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}
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}
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/**
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* @brief Reads block(s) from a specified address in a card. The received Data will be stored in Buffer0 and Buffer1.
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* Buffer0, Buffer1 and BufferSize need to be configured by function HAL_SDEx_ConfigDMAMultiBuffer before
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* call this function.
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* @param hsd: SD handle
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* @param BlockAdd: Block Address from where data is to be read
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* @param NumberOfBlocks: Total number of blocks to read
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_SDEx_ReadBlocksDMAMultiBuffer(SD_HandleTypeDef *hsd, uint32_t BlockAdd, uint32_t NumberOfBlocks)
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{
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SDMMC_DataInitTypeDef config;
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uint32_t errorstate;
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uint32_t DmaBase0_reg;
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uint32_t DmaBase1_reg;
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uint32_t add = BlockAdd;
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if (hsd->State == HAL_SD_STATE_READY)
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{
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if ((add + NumberOfBlocks) > (hsd->SdCard.LogBlockNbr))
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{
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hsd->ErrorCode |= HAL_SD_ERROR_ADDR_OUT_OF_RANGE;
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return HAL_ERROR;
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}
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DmaBase0_reg = hsd->Instance->IDMABASE0;
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DmaBase1_reg = hsd->Instance->IDMABASE1;
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if ((hsd->Instance->IDMABSIZE == 0U) || (DmaBase0_reg == 0U) || (DmaBase1_reg == 0U))
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{
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hsd->ErrorCode = HAL_SD_ERROR_ADDR_OUT_OF_RANGE;
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return HAL_ERROR;
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}
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/* Initialize data control register */
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hsd->Instance->DCTRL = 0;
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/* Clear old Flags*/
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__HAL_SD_CLEAR_FLAG(hsd, SDMMC_STATIC_DATA_FLAGS);
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hsd->ErrorCode = HAL_SD_ERROR_NONE;
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hsd->State = HAL_SD_STATE_BUSY;
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if (hsd->SdCard.CardType != CARD_SDHC_SDXC)
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{
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add *= 512U;
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}
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/* Configure the SD DPSM (Data Path State Machine) */
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config.DataTimeOut = SDMMC_DATATIMEOUT;
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config.DataLength = BLOCKSIZE * NumberOfBlocks;
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config.DataBlockSize = SDMMC_DATABLOCK_SIZE_512B;
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config.TransferDir = SDMMC_TRANSFER_DIR_TO_SDMMC;
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config.TransferMode = SDMMC_TRANSFER_MODE_BLOCK;
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config.DPSM = SDMMC_DPSM_DISABLE;
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(void)SDMMC_ConfigData(hsd->Instance, &config);
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hsd->Instance->DCTRL |= SDMMC_DCTRL_FIFORST;
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__SDMMC_CMDTRANS_ENABLE(hsd->Instance);
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hsd->Instance->IDMACTRL = SDMMC_ENABLE_IDMA_DOUBLE_BUFF0;
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/* Read Blocks in DMA mode */
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hsd->Context = (SD_CONTEXT_READ_MULTIPLE_BLOCK | SD_CONTEXT_DMA);
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/* Read Multi Block command */
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errorstate = SDMMC_CmdReadMultiBlock(hsd->Instance, add);
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if (errorstate != HAL_SD_ERROR_NONE)
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{
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hsd->State = HAL_SD_STATE_READY;
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hsd->ErrorCode |= errorstate;
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return HAL_ERROR;
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}
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__HAL_SD_ENABLE_IT(hsd, (SDMMC_IT_DCRCFAIL | SDMMC_IT_DTIMEOUT | SDMMC_IT_RXOVERR | SDMMC_IT_DATAEND |
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SDMMC_IT_IDMABTC));
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return HAL_OK;
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}
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else
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{
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return HAL_BUSY;
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}
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}
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/**
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* @brief Write block(s) to a specified address in a card. The transferred Data are stored in Buffer0 and Buffer1.
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* Buffer0, Buffer1 and BufferSize need to be configured by function HAL_SDEx_ConfigDMAMultiBuffer before
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* call this function.
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* @param hsd: SD handle
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* @param BlockAdd: Block Address from where data is to be read
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* @param NumberOfBlocks: Total number of blocks to read
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_SDEx_WriteBlocksDMAMultiBuffer(SD_HandleTypeDef *hsd, uint32_t BlockAdd, uint32_t NumberOfBlocks)
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{
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SDMMC_DataInitTypeDef config;
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uint32_t errorstate;
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uint32_t DmaBase0_reg;
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uint32_t DmaBase1_reg;
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uint32_t add = BlockAdd;
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if (hsd->State == HAL_SD_STATE_READY)
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{
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if ((add + NumberOfBlocks) > (hsd->SdCard.LogBlockNbr))
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{
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hsd->ErrorCode |= HAL_SD_ERROR_ADDR_OUT_OF_RANGE;
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return HAL_ERROR;
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}
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DmaBase0_reg = hsd->Instance->IDMABASE0;
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DmaBase1_reg = hsd->Instance->IDMABASE1;
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if ((hsd->Instance->IDMABSIZE == 0U) || (DmaBase0_reg == 0U) || (DmaBase1_reg == 0U))
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{
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hsd->ErrorCode = HAL_SD_ERROR_ADDR_OUT_OF_RANGE;
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return HAL_ERROR;
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}
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/* Initialize data control register */
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hsd->Instance->DCTRL = 0;
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hsd->ErrorCode = HAL_SD_ERROR_NONE;
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hsd->State = HAL_SD_STATE_BUSY;
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if (hsd->SdCard.CardType != CARD_SDHC_SDXC)
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{
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add *= 512U;
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}
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/* Configure the SD DPSM (Data Path State Machine) */
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config.DataTimeOut = SDMMC_DATATIMEOUT;
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config.DataLength = BLOCKSIZE * NumberOfBlocks;
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config.DataBlockSize = SDMMC_DATABLOCK_SIZE_512B;
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config.TransferDir = SDMMC_TRANSFER_DIR_TO_CARD;
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config.TransferMode = SDMMC_TRANSFER_MODE_BLOCK;
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config.DPSM = SDMMC_DPSM_DISABLE;
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(void)SDMMC_ConfigData(hsd->Instance, &config);
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__SDMMC_CMDTRANS_ENABLE(hsd->Instance);
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hsd->Instance->IDMACTRL = SDMMC_ENABLE_IDMA_DOUBLE_BUFF0;
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/* Write Blocks in DMA mode */
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hsd->Context = (SD_CONTEXT_WRITE_MULTIPLE_BLOCK | SD_CONTEXT_DMA);
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/* Write Multi Block command */
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errorstate = SDMMC_CmdWriteMultiBlock(hsd->Instance, add);
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if (errorstate != HAL_SD_ERROR_NONE)
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{
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hsd->State = HAL_SD_STATE_READY;
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hsd->ErrorCode |= errorstate;
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return HAL_ERROR;
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}
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__HAL_SD_ENABLE_IT(hsd, (SDMMC_IT_DCRCFAIL | SDMMC_IT_DTIMEOUT | SDMMC_IT_TXUNDERR | SDMMC_IT_DATAEND |
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SDMMC_IT_IDMABTC));
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return HAL_OK;
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}
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else
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{
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return HAL_BUSY;
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}
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}
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/**
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* @brief Change the DMA Buffer0 or Buffer1 address on the fly.
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* @param hsd: pointer to a SD_HandleTypeDef structure.
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* @param Buffer: the buffer to be changed, This parameter can be one of
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* the following values: SD_DMA_BUFFER0 or SD_DMA_BUFFER1
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* @param pDataBuffer: The new address
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* @note The BUFFER0 address can be changed only when the current transfer use
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* BUFFER1 and the BUFFER1 address can be changed only when the current
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* transfer use BUFFER0.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_SDEx_ChangeDMABuffer(SD_HandleTypeDef *hsd, HAL_SDEx_DMABuffer_MemoryTypeDef Buffer,
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uint32_t *pDataBuffer)
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{
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if (Buffer == SD_DMA_BUFFER0)
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{
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/* change the buffer0 address */
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hsd->Instance->IDMABASE0 = (uint32_t)pDataBuffer;
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}
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else
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{
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/* change the memory1 address */
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hsd->Instance->IDMABASE1 = (uint32_t)pDataBuffer;
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}
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return HAL_OK;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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#endif /* HAL_SD_MODULE_ENABLED */
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/**
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* @}
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*/
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/**
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* @}
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*/
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