/**
******************************************************************************
* @file stm32h7xx_hal_sd_ex.c
* @author MCD Application Team
* @brief SD card Extended HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the Secure Digital (SD) peripheral:
* + Extended features functions
*
******************************************************************************
* @attention
*
* Copyright (c) 2017 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 #####
==============================================================================
[..]
The SD Extension HAL driver can be used as follows:
(+) Configure Buffer0 and Buffer1 start address and Buffer size using HAL_SDEx_ConfigDMAMultiBuffer() function.
(+) Start Read and Write for multibuffer mode using HAL_SDEx_ReadBlocksDMAMultiBuffer()
and HAL_SDEx_WriteBlocksDMAMultiBuffer() functions.
@endverbatim
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32h7xx_hal.h"
/** @addtogroup STM32H7xx_HAL_Driver
* @{
*/
/** @defgroup SDEx SDEx
* @brief SD Extended HAL module driver
* @{
*/
#ifdef HAL_SD_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup SDEx_Exported_Functions
* @{
*/
/** @addtogroup SDEx_Exported_Functions_Group1
* @brief Multibuffer functions
*
@verbatim
==============================================================================
##### Multibuffer functions #####
==============================================================================
[..]
This section provides functions allowing to configure the multibuffer mode and start read and write
multibuffer mode for SD HAL driver.
@endverbatim
* @{
*/
/**
* @brief Configure DMA Dual Buffer mode. The Data transfer is managed by an Internal DMA.
* @param hsd: SD handle
* @param pDataBuffer0: Pointer to the buffer0 that will contain/receive the transferred data
* @param pDataBuffer1: Pointer to the buffer1 that will contain/receive the transferred data
* @param BufferSize: Size of Buffer0 in Blocks. Buffer0 and Buffer1 must have the same size.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SDEx_ConfigDMAMultiBuffer(SD_HandleTypeDef *hsd, uint32_t *pDataBuffer0, uint32_t *pDataBuffer1,
uint32_t BufferSize)
{
if (hsd->State == HAL_SD_STATE_READY)
{
hsd->Instance->IDMABASE0 = (uint32_t) pDataBuffer0;
hsd->Instance->IDMABASE1 = (uint32_t) pDataBuffer1;
hsd->Instance->IDMABSIZE = (uint32_t)(BLOCKSIZE * BufferSize);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Reads block(s) from a specified address in a card. The received Data will be stored in Buffer0 and Buffer1.
* Buffer0, Buffer1 and BufferSize need to be configured by function HAL_SDEx_ConfigDMAMultiBuffer before
* call this function.
* @param hsd: SD handle
* @param BlockAdd: Block Address from where data is to be read
* @param NumberOfBlocks: Total number of blocks to read
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SDEx_ReadBlocksDMAMultiBuffer(SD_HandleTypeDef *hsd, uint32_t BlockAdd, uint32_t NumberOfBlocks)
{
SDMMC_DataInitTypeDef config;
uint32_t errorstate;
uint32_t DmaBase0_reg;
uint32_t DmaBase1_reg;
uint32_t add = BlockAdd;
if (hsd->State == HAL_SD_STATE_READY)
{
if ((add + NumberOfBlocks) > (hsd->SdCard.LogBlockNbr))
{
hsd->ErrorCode |= HAL_SD_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
DmaBase0_reg = hsd->Instance->IDMABASE0;
DmaBase1_reg = hsd->Instance->IDMABASE1;
if ((hsd->Instance->IDMABSIZE == 0U) || (DmaBase0_reg == 0U) || (DmaBase1_reg == 0U))
{
hsd->ErrorCode = HAL_SD_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
/* Initialize data control register */
hsd->Instance->DCTRL = 0;
/* Clear old Flags*/
__HAL_SD_CLEAR_FLAG(hsd, SDMMC_STATIC_DATA_FLAGS);
hsd->ErrorCode = HAL_SD_ERROR_NONE;
hsd->State = HAL_SD_STATE_BUSY;
if (hsd->SdCard.CardType != CARD_SDHC_SDXC)
{
add *= 512U;
}
/* Configure the SD DPSM (Data Path State Machine) */
config.DataTimeOut = SDMMC_DATATIMEOUT;
config.DataLength = BLOCKSIZE * NumberOfBlocks;
config.DataBlockSize = SDMMC_DATABLOCK_SIZE_512B;
config.TransferDir = SDMMC_TRANSFER_DIR_TO_SDMMC;
config.TransferMode = SDMMC_TRANSFER_MODE_BLOCK;
config.DPSM = SDMMC_DPSM_DISABLE;
(void)SDMMC_ConfigData(hsd->Instance, &config);
hsd->Instance->DCTRL |= SDMMC_DCTRL_FIFORST;
__SDMMC_CMDTRANS_ENABLE(hsd->Instance);
hsd->Instance->IDMACTRL = SDMMC_ENABLE_IDMA_DOUBLE_BUFF0;
/* Read Blocks in DMA mode */
hsd->Context = (SD_CONTEXT_READ_MULTIPLE_BLOCK | SD_CONTEXT_DMA);
/* Read Multi Block command */
errorstate = SDMMC_CmdReadMultiBlock(hsd->Instance, add);
if (errorstate != HAL_SD_ERROR_NONE)
{
hsd->State = HAL_SD_STATE_READY;
hsd->ErrorCode |= errorstate;
return HAL_ERROR;
}
__HAL_SD_ENABLE_IT(hsd, (SDMMC_IT_DCRCFAIL | SDMMC_IT_DTIMEOUT | SDMMC_IT_RXOVERR | SDMMC_IT_DATAEND |
SDMMC_IT_IDMABTC));
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Write block(s) to a specified address in a card. The transferred Data are stored in Buffer0 and Buffer1.
* Buffer0, Buffer1 and BufferSize need to be configured by function HAL_SDEx_ConfigDMAMultiBuffer before
* call this function.
* @param hsd: SD handle
* @param BlockAdd: Block Address from where data is to be read
* @param NumberOfBlocks: Total number of blocks to read
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SDEx_WriteBlocksDMAMultiBuffer(SD_HandleTypeDef *hsd, uint32_t BlockAdd, uint32_t NumberOfBlocks)
{
SDMMC_DataInitTypeDef config;
uint32_t errorstate;
uint32_t DmaBase0_reg;
uint32_t DmaBase1_reg;
uint32_t add = BlockAdd;
if (hsd->State == HAL_SD_STATE_READY)
{
if ((add + NumberOfBlocks) > (hsd->SdCard.LogBlockNbr))
{
hsd->ErrorCode |= HAL_SD_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
DmaBase0_reg = hsd->Instance->IDMABASE0;
DmaBase1_reg = hsd->Instance->IDMABASE1;
if ((hsd->Instance->IDMABSIZE == 0U) || (DmaBase0_reg == 0U) || (DmaBase1_reg == 0U))
{
hsd->ErrorCode = HAL_SD_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
/* Initialize data control register */
hsd->Instance->DCTRL = 0;
hsd->ErrorCode = HAL_SD_ERROR_NONE;
hsd->State = HAL_SD_STATE_BUSY;
if (hsd->SdCard.CardType != CARD_SDHC_SDXC)
{
add *= 512U;
}
/* Configure the SD DPSM (Data Path State Machine) */
config.DataTimeOut = SDMMC_DATATIMEOUT;
config.DataLength = BLOCKSIZE * NumberOfBlocks;
config.DataBlockSize = SDMMC_DATABLOCK_SIZE_512B;
config.TransferDir = SDMMC_TRANSFER_DIR_TO_CARD;
config.TransferMode = SDMMC_TRANSFER_MODE_BLOCK;
config.DPSM = SDMMC_DPSM_DISABLE;
(void)SDMMC_ConfigData(hsd->Instance, &config);
__SDMMC_CMDTRANS_ENABLE(hsd->Instance);
hsd->Instance->IDMACTRL = SDMMC_ENABLE_IDMA_DOUBLE_BUFF0;
/* Write Blocks in DMA mode */
hsd->Context = (SD_CONTEXT_WRITE_MULTIPLE_BLOCK | SD_CONTEXT_DMA);
/* Write Multi Block command */
errorstate = SDMMC_CmdWriteMultiBlock(hsd->Instance, add);
if (errorstate != HAL_SD_ERROR_NONE)
{
hsd->State = HAL_SD_STATE_READY;
hsd->ErrorCode |= errorstate;
return HAL_ERROR;
}
__HAL_SD_ENABLE_IT(hsd, (SDMMC_IT_DCRCFAIL | SDMMC_IT_DTIMEOUT | SDMMC_IT_TXUNDERR | SDMMC_IT_DATAEND |
SDMMC_IT_IDMABTC));
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Change the DMA Buffer0 or Buffer1 address on the fly.
* @param hsd: pointer to a SD_HandleTypeDef structure.
* @param Buffer: the buffer to be changed, This parameter can be one of
* the following values: SD_DMA_BUFFER0 or SD_DMA_BUFFER1
* @param pDataBuffer: The new address
* @note The BUFFER0 address can be changed only when the current transfer use
* BUFFER1 and the BUFFER1 address can be changed only when the current
* transfer use BUFFER0.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SDEx_ChangeDMABuffer(SD_HandleTypeDef *hsd, HAL_SDEx_DMABuffer_MemoryTypeDef Buffer,
uint32_t *pDataBuffer)
{
if (Buffer == SD_DMA_BUFFER0)
{
/* change the buffer0 address */
hsd->Instance->IDMABASE0 = (uint32_t)pDataBuffer;
}
else
{
/* change the memory1 address */
hsd->Instance->IDMABASE1 = (uint32_t)pDataBuffer;
}
return HAL_OK;
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_SD_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
