Initialization and de-initialization functions

Collaboration diagram for Initialization and de-initialization functions:

Functions
uint32_t	LL_DMA_Init (DMA_TypeDef *DMAx, uint32_t Stream, LL_DMA_InitTypeDef *DMA_InitStruct)
	Initialize the DMA registers according to the specified parameters in DMA_InitStruct. More...
uint32_t	LL_DMA_DeInit (DMA_TypeDef *DMAx, uint32_t Stream)
	De-initialize the DMA registers to their default reset values. More...
void	LL_DMA_StructInit (LL_DMA_InitTypeDef *DMA_InitStruct)
	Set each LL_DMA_InitTypeDef field to default value. More...

Detailed Description

Function Documentation

LL_DMA_DeInit()

uint32_t LL_DMA_DeInit	(	DMA_TypeDef *	DMAx,
		uint32_t	Stream
	)

De-initialize the DMA registers to their default reset values.

Parameters

DMAx	DMAx Instance
Stream	This parameter can be one of the following values: LL_DMA_STREAM_0 LL_DMA_STREAM_1 LL_DMA_STREAM_2 LL_DMA_STREAM_3 LL_DMA_STREAM_4 LL_DMA_STREAM_5 LL_DMA_STREAM_6 LL_DMA_STREAM_7 LL_DMA_STREAM_ALL

Return values

An	ErrorStatus enumeration value: SUCCESS: DMA registers are de-initialized ERROR: DMA registers are not de-initialized

Definition at line 155 of file stm32f4xx_ll_dma.c.

LL_DMA_Init()

uint32_t LL_DMA_Init	(	DMA_TypeDef *	DMAx,
		uint32_t	Stream,
		LL_DMA_InitTypeDef *	DMA_InitStruct
	)

Initialize the DMA registers according to the specified parameters in DMA_InitStruct.

Note

To convert DMAx_Streamy Instance to DMAx Instance and Streamy, use helper macros :

• __LL_DMA_GET_INSTANCE
• __LL_DMA_GET_STREAM

Parameters

DMAx	DMAx Instance
Stream	This parameter can be one of the following values: LL_DMA_STREAM_0 LL_DMA_STREAM_1 LL_DMA_STREAM_2 LL_DMA_STREAM_3 LL_DMA_STREAM_4 LL_DMA_STREAM_5 LL_DMA_STREAM_6 LL_DMA_STREAM_7
DMA_InitStruct	pointer to a LL_DMA_InitTypeDef structure.

Return values

An	ErrorStatus enumeration value: SUCCESS: DMA registers are initialized ERROR: Not applicable

Definition at line 284 of file stm32f4xx_ll_dma.c.

LL_DMA_StructInit()

void LL_DMA_StructInit

(

LL_DMA_InitTypeDef *

DMA_InitStruct

)

Set each LL_DMA_InitTypeDef field to default value.

Parameters

DMA_InitStruct

Pointer to a LL_DMA_InitTypeDef structure.

Return values

None

Definition at line 384 of file stm32f4xx_ll_dma.c.