Multibuffer functions. More...

Functions
HAL_StatusTypeDef	HAL_MMCEx_ConfigDMAMultiBuffer (MMC_HandleTypeDef hmmc, uint32_t pDataBuffer0, uint32_t *pDataBuffer1, uint32_t BufferSize)
	Configure DMA Dual Buffer mode.
HAL_StatusTypeDef	HAL_MMCEx_ReadBlocksDMAMultiBuffer (MMC_HandleTypeDef *hmmc, uint32_t BlockAdd, uint32_t NumberOfBlocks)
	Reads block(s) from a specified address in a card.
HAL_StatusTypeDef	HAL_MMCEx_WriteBlocksDMAMultiBuffer (MMC_HandleTypeDef *hmmc, uint32_t BlockAdd, uint32_t NumberOfBlocks)
	Write block(s) to a specified address in a card.
HAL_StatusTypeDef	HAL_MMCEx_ChangeDMABuffer (MMC_HandleTypeDef hmmc, HAL_MMCEx_DMABuffer_MemoryTypeDef Buffer, uint32_t pDataBuffer)
	Change the DMA Buffer0 or Buffer1 address on the fly.
void	HAL_MMCEx_Read_DMADoubleBuf0CpltCallback (MMC_HandleTypeDef *hmmc)
	Read DMA Buffer 0 Transfer completed callbacks.
void	HAL_MMCEx_Read_DMADoubleBuf1CpltCallback (MMC_HandleTypeDef *hmmc)
	Read DMA Buffer 1 Transfer completed callbacks.
void	HAL_MMCEx_Write_DMADoubleBuf0CpltCallback (MMC_HandleTypeDef *hmmc)
	Write DMA Buffer 0 Transfer completed callbacks.
void	HAL_MMCEx_Write_DMADoubleBuf1CpltCallback (MMC_HandleTypeDef *hmmc)
	Write DMA Buffer 1 Transfer completed callbacks.

Detailed Description

Multibuffer functions.

  ==============================================================================
          ##### Multibuffer functions #####
  ==============================================================================
  [..]
    This section provides functions allowing to configure the multibuffer mode and start read and write
    multibuffer mode for MMC HAL driver.

Function Documentation

HAL_StatusTypeDef HAL_MMCEx_ChangeDMABuffer	(	MMC_HandleTypeDef *	hmmc,
		HAL_MMCEx_DMABuffer_MemoryTypeDef	Buffer,
		uint32_t *	pDataBuffer
	)

Change the DMA Buffer0 or Buffer1 address on the fly.

Parameters:

hmmc,:	pointer to a MMC_HandleTypeDef structure.
Buffer,:	the buffer to be changed, This parameter can be one of the following values: MMC_DMA_BUFFER0 or MMC_DMA_BUFFER1
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.

Return values:

HAL status

Definition at line 319 of file stm32h7xx_hal_mmc_ex.c.

References __MMC_HandleTypeDef::Instance, and MMC_DMA_BUFFER0.

HAL_StatusTypeDef HAL_MMCEx_ConfigDMAMultiBuffer	(	MMC_HandleTypeDef *	hmmc,
		uint32_t *	pDataBuffer0,
		uint32_t *	pDataBuffer1,
		uint32_t	BufferSize
	)

Configure DMA Dual Buffer mode.

The Data transfer is managed by an Internal DMA.

Parameters:

hmmc,:	MMC handle
pDataBuffer0,:	Pointer to the buffer0 that will contain/receive the transferred data
pDataBuffer1,:	Pointer to the buffer1 that will contain/receive the transferred data
BufferSize,:	Size of Buffer0 in Blocks. Buffer0 and Buffer1 must have the same size.

Return values:

HAL status

Definition at line 86 of file stm32h7xx_hal_mmc_ex.c.

References HAL_MMC_STATE_READY, __MMC_HandleTypeDef::Instance, MMC_BLOCKSIZE, and __MMC_HandleTypeDef::State.

void HAL_MMCEx_Read_DMADoubleBuf0CpltCallback ( MMC_HandleTypeDef * hmmc )

Read DMA Buffer 0 Transfer completed callbacks.

Parameters:

hmmc,: MMC handle

Return values:

None

Definition at line 4225 of file stm32h7xx_hal_mmc.c.

Referenced by HAL_MMC_Init(), HAL_MMC_IRQHandler(), and HAL_MMC_UnRegisterCallback().

void HAL_MMCEx_Read_DMADoubleBuf1CpltCallback ( MMC_HandleTypeDef * hmmc )

Read DMA Buffer 1 Transfer completed callbacks.

Parameters:

hmmc,: MMC handle

Return values:

None

Definition at line 4240 of file stm32h7xx_hal_mmc.c.

Referenced by HAL_MMC_Init(), HAL_MMC_IRQHandler(), and HAL_MMC_UnRegisterCallback().

HAL_StatusTypeDef HAL_MMCEx_ReadBlocksDMAMultiBuffer	(	MMC_HandleTypeDef *	hmmc,
		uint32_t	BlockAdd,
		uint32_t	NumberOfBlocks
	)

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.

Parameters:

hmmc,:	MMC handle
BlockAdd,:	Block Address from where data is to be read
NumberOfBlocks,:	Total number of blocks to read

Return values:

HAL status

Definition at line 112 of file stm32h7xx_hal_mmc_ex.c.

References __HAL_MMC_ENABLE_IT, HAL_MMC_CardInfoTypeDef::CardType, __MMC_HandleTypeDef::Context, __MMC_HandleTypeDef::ErrorCode, __MMC_HandleTypeDef::Ext_CSD, HAL_MMC_ERROR_ADDR_MISALIGNED, HAL_MMC_ERROR_ADDR_OUT_OF_RANGE, HAL_MMC_ERROR_BLOCK_LEN_ERR, HAL_MMC_ERROR_NONE, HAL_MMC_STATE_BUSY, HAL_MMC_STATE_READY, __MMC_HandleTypeDef::Instance, HAL_MMC_CardInfoTypeDef::LogBlockNbr, MMC_BLOCKSIZE, MMC_CONTEXT_DMA, MMC_CONTEXT_READ_MULTIPLE_BLOCK, MMC_EXT_CSD_DATA_SEC_SIZE_INDEX, MMC_EXT_CSD_DATA_SEC_SIZE_POS, MMC_HIGH_CAPACITY_CARD, __MMC_HandleTypeDef::MmcCard, and __MMC_HandleTypeDef::State.

void HAL_MMCEx_Write_DMADoubleBuf0CpltCallback ( MMC_HandleTypeDef * hmmc )

Write DMA Buffer 0 Transfer completed callbacks.

Parameters:

hmmc,: MMC handle

Return values:

None

Definition at line 4255 of file stm32h7xx_hal_mmc.c.

Referenced by HAL_MMC_Init(), HAL_MMC_IRQHandler(), and HAL_MMC_UnRegisterCallback().

void HAL_MMCEx_Write_DMADoubleBuf1CpltCallback ( MMC_HandleTypeDef * hmmc )

Write DMA Buffer 1 Transfer completed callbacks.

Parameters:

hmmc,: MMC handle

Return values:

None

Definition at line 4270 of file stm32h7xx_hal_mmc.c.

Referenced by HAL_MMC_Init(), HAL_MMC_IRQHandler(), and HAL_MMC_UnRegisterCallback().

HAL_StatusTypeDef HAL_MMCEx_WriteBlocksDMAMultiBuffer	(	MMC_HandleTypeDef *	hmmc,
		uint32_t	BlockAdd,
		uint32_t	NumberOfBlocks
	)

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.

Parameters:

hmmc,:	MMC handle
BlockAdd,:	Block Address from where data is to be read
NumberOfBlocks,:	Total number of blocks to read

Return values:

HAL status

Definition at line 215 of file stm32h7xx_hal_mmc_ex.c.

References __HAL_MMC_ENABLE_IT, HAL_MMC_CardInfoTypeDef::CardType, __MMC_HandleTypeDef::Context, __MMC_HandleTypeDef::ErrorCode, __MMC_HandleTypeDef::Ext_CSD, HAL_MMC_ERROR_ADDR_MISALIGNED, HAL_MMC_ERROR_ADDR_OUT_OF_RANGE, HAL_MMC_ERROR_BLOCK_LEN_ERR, HAL_MMC_ERROR_NONE, HAL_MMC_STATE_BUSY, HAL_MMC_STATE_READY, __MMC_HandleTypeDef::Instance, HAL_MMC_CardInfoTypeDef::LogBlockNbr, MMC_BLOCKSIZE, MMC_CONTEXT_DMA, MMC_CONTEXT_WRITE_MULTIPLE_BLOCK, MMC_EXT_CSD_DATA_SEC_SIZE_INDEX, MMC_EXT_CSD_DATA_SEC_SIZE_POS, MMC_HIGH_CAPACITY_CARD, __MMC_HandleTypeDef::MmcCard, and __MMC_HandleTypeDef::State.

Functions

Detailed Description

Function Documentation