DMA Private Functions

DMA private functions. More...

Functions
static void	DMA_SetConfig (DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
	Sets the DMA Transfer parameter.
static uint32_t	DMA_CalcBaseAndBitshift (DMA_HandleTypeDef *hdma)
	Returns the DMA Stream base address depending on stream number.
static HAL_StatusTypeDef	DMA_CheckFifoParam (DMA_HandleTypeDef *hdma)
	Check compatibility between FIFO threshold level and size of the memory burst.

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Detailed Description

DMA private functions.

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Function Documentation

static uint32_t DMA_CalcBaseAndBitshift

(

DMA_HandleTypeDef *

hdma

)

[static]

Returns the DMA Stream base address depending on stream number.

Parameters:

hdma	pointer to a DMA_HandleTypeDef structure that contains the configuration information for the specified DMA Stream.

Return values:

Stream

base address

Definition at line 1184 of file stm32f4xx_hal_dma.c.

References __DMA_HandleTypeDef::Instance, __DMA_HandleTypeDef::StreamBaseAddress, and __DMA_HandleTypeDef::StreamIndex.

Referenced by HAL_DMA_DeInit(), and HAL_DMA_Init().

static HAL_StatusTypeDef DMA_CheckFifoParam

(

DMA_HandleTypeDef *

hdma

)

[static]

Check compatibility between FIFO threshold level and size of the memory burst.

Parameters:

hdma	pointer to a DMA_HandleTypeDef structure that contains the configuration information for the specified DMA Stream.

Return values:

HAL

status

Definition at line 1212 of file stm32f4xx_hal_dma.c.

References DMA_FIFO_THRESHOLD_1QUARTERFULL, DMA_FIFO_THRESHOLD_3QUARTERSFULL, DMA_FIFO_THRESHOLD_FULL, DMA_FIFO_THRESHOLD_HALFFULL, DMA_MBURST_INC16, DMA_MDATAALIGN_BYTE, DMA_MDATAALIGN_HALFWORD, DMA_InitTypeDef::FIFOThreshold, __DMA_HandleTypeDef::Init, DMA_InitTypeDef::MemBurst, and DMA_InitTypeDef::MemDataAlignment.

Referenced by HAL_DMA_Init().

static void DMA_SetConfig	(	DMA_HandleTypeDef *	hdma,
		uint32_t	SrcAddress,
		uint32_t	DstAddress,
		uint32_t	DataLength
	)		[static]

Sets the DMA Transfer parameter.

Parameters:

hdma	pointer to a DMA_HandleTypeDef structure that contains the configuration information for the specified DMA Stream.
SrcAddress	The source memory Buffer address
DstAddress	The destination memory Buffer address
DataLength	The length of data to be transferred from source to destination

Return values:

HAL

status

Definition at line 1150 of file stm32f4xx_hal_dma.c.

References DMA_InitTypeDef::Direction, DMA_MEMORY_TO_PERIPH, __DMA_HandleTypeDef::Init, and __DMA_HandleTypeDef::Instance.

Referenced by HAL_DMA_Start(), and HAL_DMA_Start_IT().