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steering-wheel/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_mmc_ex.c

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/**
******************************************************************************
* @file stm32h7xx_hal_mmc_ex.c
* @author MCD Application Team
* @brief MMC card Extended HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the Secure Digital (MMC) 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 MMC Extension HAL driver can be used as follows:
(+) Configure Buffer0 and Buffer1 start address and Buffer size using HAL_MMCEx_ConfigDMAMultiBuffer() function.
(+) Start Read and Write for multibuffer mode using HAL_MMCEx_ReadBlocksDMAMultiBuffer() and
HAL_MMCEx_WriteBlocksDMAMultiBuffer() functions.
@endverbatim
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32h7xx_hal.h"
/** @addtogroup STM32H7xx_HAL_Driver
* @{
*/
/** @defgroup MMCEx MMCEx
* @brief MMC Extended HAL module driver
* @{
*/
#ifdef HAL_MMC_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup MMCEx_Exported_Functions
* @{
*/
/** @addtogroup MMCEx_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 MMC HAL driver.
@endverbatim
* @{
*/
/**
* @brief Configure DMA Dual Buffer mode. The Data transfer is managed by an Internal DMA.
* @param hmmc: MMC 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_MMCEx_ConfigDMAMultiBuffer(MMC_HandleTypeDef *hmmc, uint32_t *pDataBuffer0,
uint32_t *pDataBuffer1, uint32_t BufferSize)
{
if (hmmc->State == HAL_MMC_STATE_READY)
{
hmmc->Instance->IDMABASE0 = (uint32_t) pDataBuffer0 ;
hmmc->Instance->IDMABASE1 = (uint32_t) pDataBuffer1 ;
hmmc->Instance->IDMABSIZE = (uint32_t)(MMC_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_MMCEx_ConfigDMAMultiBuffer before
* call this function.
* @param hmmc: MMC 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_MMCEx_ReadBlocksDMAMultiBuffer(MMC_HandleTypeDef *hmmc, uint32_t BlockAdd,
uint32_t NumberOfBlocks)
{
SDMMC_DataInitTypeDef config;
uint32_t DmaBase0_reg;
uint32_t DmaBase1_reg;
uint32_t errorstate;
uint32_t add = BlockAdd;
if (hmmc->State == HAL_MMC_STATE_READY)
{
if ((BlockAdd + NumberOfBlocks) > (hmmc->MmcCard.LogBlockNbr))
{
hmmc->ErrorCode |= HAL_MMC_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
/* Check the case of 4kB blocks (field DATA SECTOR SIZE of extended CSD register) */
if (((hmmc->Ext_CSD[(MMC_EXT_CSD_DATA_SEC_SIZE_INDEX / 4)] >> MMC_EXT_CSD_DATA_SEC_SIZE_POS) & 0x000000FFU) != 0x0U)
{
if ((NumberOfBlocks % 8U) != 0U)
{
/* The number of blocks should be a multiple of 8 sectors of 512 bytes = 4 KBytes */
hmmc->ErrorCode |= HAL_MMC_ERROR_BLOCK_LEN_ERR;
return HAL_ERROR;
}
if ((BlockAdd % 8U) != 0U)
{
/* The address should be aligned to 8 (corresponding to 4 KBytes blocks) */
hmmc->ErrorCode |= HAL_MMC_ERROR_ADDR_MISALIGNED;
return HAL_ERROR;
}
}
DmaBase0_reg = hmmc->Instance->IDMABASE0;
DmaBase1_reg = hmmc->Instance->IDMABASE1;
if ((hmmc->Instance->IDMABSIZE == 0U) || (DmaBase0_reg == 0U) || (DmaBase1_reg == 0U))
{
hmmc->ErrorCode = HAL_MMC_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
/* Initialize data control register */
hmmc->Instance->DCTRL = 0;
hmmc->ErrorCode = HAL_MMC_ERROR_NONE;
hmmc->State = HAL_MMC_STATE_BUSY;
if ((hmmc->MmcCard.CardType) != MMC_HIGH_CAPACITY_CARD)
{
add *= 512U;
}
/* Configure the MMC DPSM (Data Path State Machine) */
config.DataTimeOut = SDMMC_DATATIMEOUT;
config.DataLength = MMC_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(hmmc->Instance, &config);
hmmc->Instance->DCTRL |= SDMMC_DCTRL_FIFORST;
__SDMMC_CMDTRANS_ENABLE(hmmc->Instance);
hmmc->Instance->IDMACTRL = SDMMC_ENABLE_IDMA_DOUBLE_BUFF0;
/* Read Blocks in DMA mode */
hmmc->Context = (MMC_CONTEXT_READ_MULTIPLE_BLOCK | MMC_CONTEXT_DMA);
/* Read Multi Block command */
errorstate = SDMMC_CmdReadMultiBlock(hmmc->Instance, add);
if (errorstate != HAL_MMC_ERROR_NONE)
{
hmmc->State = HAL_MMC_STATE_READY;
hmmc->ErrorCode |= errorstate;
return HAL_ERROR;
}
__HAL_MMC_ENABLE_IT(hmmc, (SDMMC_IT_DCRCFAIL | SDMMC_IT_DTIMEOUT | SDMMC_IT_RXOVERR | SDMMC_IT_DATAEND |
SDMMC_FLAG_IDMATE | SDMMC_FLAG_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_MMCEx_ConfigDMAMultiBuffer before
* call this function.
* @param hmmc: MMC 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_MMCEx_WriteBlocksDMAMultiBuffer(MMC_HandleTypeDef *hmmc, 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 (hmmc->State == HAL_MMC_STATE_READY)
{
if ((BlockAdd + NumberOfBlocks) > (hmmc->MmcCard.LogBlockNbr))
{
hmmc->ErrorCode |= HAL_MMC_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
/* Check the case of 4kB blocks (field DATA SECTOR SIZE of extended CSD register) */
if (((hmmc->Ext_CSD[(MMC_EXT_CSD_DATA_SEC_SIZE_INDEX / 4)] >> MMC_EXT_CSD_DATA_SEC_SIZE_POS) & 0x000000FFU) != 0x0U)
{
if ((NumberOfBlocks % 8U) != 0U)
{
/* The number of blocks should be a multiple of 8 sectors of 512 bytes = 4 KBytes */
hmmc->ErrorCode |= HAL_MMC_ERROR_BLOCK_LEN_ERR;
return HAL_ERROR;
}
if ((BlockAdd % 8U) != 0U)
{
/* The address should be aligned to 8 (corresponding to 4 KBytes blocks) */
hmmc->ErrorCode |= HAL_MMC_ERROR_ADDR_MISALIGNED;
return HAL_ERROR;
}
}
DmaBase0_reg = hmmc->Instance->IDMABASE0;
DmaBase1_reg = hmmc->Instance->IDMABASE1;
if ((hmmc->Instance->IDMABSIZE == 0U) || (DmaBase0_reg == 0U) || (DmaBase1_reg == 0U))
{
hmmc->ErrorCode = HAL_MMC_ERROR_ADDR_OUT_OF_RANGE;
return HAL_ERROR;
}
/* Initialize data control register */
hmmc->Instance->DCTRL = 0;
hmmc->ErrorCode = HAL_MMC_ERROR_NONE;
hmmc->State = HAL_MMC_STATE_BUSY;
if ((hmmc->MmcCard.CardType) != MMC_HIGH_CAPACITY_CARD)
{
add *= 512U;
}
/* Configure the MMC DPSM (Data Path State Machine) */
config.DataTimeOut = SDMMC_DATATIMEOUT;
config.DataLength = MMC_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(hmmc->Instance, &config);
__SDMMC_CMDTRANS_ENABLE(hmmc->Instance);
hmmc->Instance->IDMACTRL = SDMMC_ENABLE_IDMA_DOUBLE_BUFF0;
/* Write Blocks in DMA mode */
hmmc->Context = (MMC_CONTEXT_WRITE_MULTIPLE_BLOCK | MMC_CONTEXT_DMA);
/* Write Multi Block command */
errorstate = SDMMC_CmdWriteMultiBlock(hmmc->Instance, add);
if (errorstate != HAL_MMC_ERROR_NONE)
{
hmmc->State = HAL_MMC_STATE_READY;
hmmc->ErrorCode |= errorstate;
return HAL_ERROR;
}
__HAL_MMC_ENABLE_IT(hmmc, (SDMMC_IT_DCRCFAIL | SDMMC_IT_DTIMEOUT | SDMMC_IT_TXUNDERR | SDMMC_IT_DATAEND |
SDMMC_FLAG_IDMATE | SDMMC_FLAG_IDMABTC));
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Change the DMA Buffer0 or Buffer1 address on the fly.
* @param hmmc: pointer to a MMC_HandleTypeDef structure.
* @param Buffer: the buffer to be changed, This parameter can be one of
* the following values: MMC_DMA_BUFFER0 or MMC_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_MMCEx_ChangeDMABuffer(MMC_HandleTypeDef *hmmc, HAL_MMCEx_DMABuffer_MemoryTypeDef Buffer,
uint32_t *pDataBuffer)
{
if (Buffer == MMC_DMA_BUFFER0)
{
/* change the buffer0 address */
hmmc->Instance->IDMABASE0 = (uint32_t)pDataBuffer;
}
else
{
/* change the memory1 address */
hmmc->Instance->IDMABASE1 = (uint32_t)pDataBuffer;
}
return HAL_OK;
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_MMC_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
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