Initialization and de-initialization functions

Functions
uint32_t	LL_BDMA_DeInit (BDMA_TypeDef *BDMAx, uint32_t Channel)
	De-initialize the DMA registers to their default reset values.
uint32_t	LL_BDMA_Init (BDMA_TypeDef *BDMAx, uint32_t Channel, LL_BDMA_InitTypeDef *BDMA_InitStruct)
	Initialize the BDMA registers according to the specified parameters in BDMA_InitStruct.
void	LL_BDMA_StructInit (LL_BDMA_InitTypeDef *BDMA_InitStruct)
	Set each LL_BDMA_InitTypeDef field to default value.

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Function Documentation

uint32_t LL_BDMA_DeInit	(	BDMA_TypeDef *	BDMAx,
		uint32_t	Channel
	)

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

Parameters:

BDMAx	BDMAx Instance
Channel	This parameter can be one of the following values: LL_BDMA_CHANNEL_0 LL_BDMA_CHANNEL_1 LL_BDMA_CHANNEL_2 LL_BDMA_CHANNEL_3 LL_BDMA_CHANNEL_4 LL_BDMA_CHANNEL_5 LL_BDMA_CHANNEL_6 LL_BDMA_CHANNEL_7 LL_BDMA_CHANNEL_ALL

Return values:

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

Definition at line 123 of file stm32h7xx_ll_bdma.c.

References __LL_BDMA_GET_CHANNEL_INSTANCE, assert_param, IS_LL_BDMA_ALL_CHANNEL_INSTANCE, LL_AHB1_GRP1_ForceReset(), LL_AHB1_GRP1_PERIPH_DMA1, LL_AHB1_GRP1_ReleaseReset(), LL_BDMA_CHANNEL_0, LL_BDMA_CHANNEL_1, LL_BDMA_CHANNEL_2, LL_BDMA_CHANNEL_3, LL_BDMA_CHANNEL_4, LL_BDMA_CHANNEL_5, LL_BDMA_CHANNEL_6, LL_BDMA_CHANNEL_7, LL_BDMA_CHANNEL_ALL, LL_BDMA_ClearFlag_GI0(), LL_BDMA_ClearFlag_GI1(), LL_BDMA_ClearFlag_GI2(), LL_BDMA_ClearFlag_GI3(), LL_BDMA_ClearFlag_GI4(), LL_BDMA_ClearFlag_GI5(), LL_BDMA_ClearFlag_GI6(), LL_BDMA_ClearFlag_GI7(), LL_BDMA_SetPeriphRequest(), LL_BDMA_WriteReg, and LL_DMAMUX2_REQ_MEM2MEM.

uint32_t LL_BDMA_Init	(	BDMA_TypeDef *	BDMAx,
		uint32_t	Channel,
		LL_BDMA_InitTypeDef *	BDMA_InitStruct
	)

Initialize the BDMA registers according to the specified parameters in BDMA_InitStruct.

Note:

To convert BDMAx_Channely Instance to BDMAx Instance and Channely, use helper macros :

• __LL_BDMA_GET_INSTANCE
• __LL_BDMA_GET_CHANNEL

Parameters:

BDMAx	BDMAx Instance
Channel	This parameter can be one of the following values: LL_BDMA_CHANNEL_0 LL_BDMA_CHANNEL_1 LL_BDMA_CHANNEL_2 LL_BDMA_CHANNEL_3 LL_BDMA_CHANNEL_4 LL_BDMA_CHANNEL_5 LL_BDMA_CHANNEL_6 LL_BDMA_CHANNEL_7
BDMA_InitStruct	pointer to a LL_BDMA_InitTypeDef structure.

Return values:

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

Definition at line 241 of file stm32h7xx_ll_bdma.c.

References assert_param, LL_BDMA_InitTypeDef::Direction, IS_LL_BDMA_ALL_CHANNEL_INSTANCE, IS_LL_BDMA_DIRECTION, IS_LL_BDMA_MEMORYDATASIZE, IS_LL_BDMA_MEMORYINCMODE, IS_LL_BDMA_MODE, IS_LL_BDMA_NBDATA, IS_LL_BDMA_PERIPHDATASIZE, IS_LL_BDMA_PERIPHINCMODE, IS_LL_BDMA_PERIPHREQUEST, IS_LL_BDMA_PRIORITY, LL_BDMA_ConfigTransfer(), LL_BDMA_SetDataLength(), LL_BDMA_SetMemoryAddress(), LL_BDMA_SetPeriphAddress(), LL_BDMA_SetPeriphRequest(), LL_BDMA_InitTypeDef::MemoryOrM2MDstAddress, LL_BDMA_InitTypeDef::MemoryOrM2MDstDataSize, LL_BDMA_InitTypeDef::MemoryOrM2MDstIncMode, LL_BDMA_InitTypeDef::Mode, LL_BDMA_InitTypeDef::NbData, LL_BDMA_InitTypeDef::PeriphOrM2MSrcAddress, LL_BDMA_InitTypeDef::PeriphOrM2MSrcDataSize, LL_BDMA_InitTypeDef::PeriphOrM2MSrcIncMode, LL_BDMA_InitTypeDef::PeriphRequest, and LL_BDMA_InitTypeDef::Priority.

void LL_BDMA_StructInit

(

LL_BDMA_InitTypeDef *

BDMA_InitStruct

)

Set each LL_BDMA_InitTypeDef field to default value.

Parameters:

BDMA_InitStruct

Pointer to a LL_BDMA_InitTypeDef structure.

Return values:

None

Definition at line 309 of file stm32h7xx_ll_bdma.c.

References LL_BDMA_InitTypeDef::Direction, LL_BDMA_DIRECTION_PERIPH_TO_MEMORY, LL_BDMA_MDATAALIGN_BYTE, LL_BDMA_MEMORY_NOINCREMENT, LL_BDMA_MODE_NORMAL, LL_BDMA_PDATAALIGN_BYTE, LL_BDMA_PERIPH_NOINCREMENT, LL_BDMA_PRIORITY_LOW, LL_DMAMUX2_REQ_MEM2MEM, LL_BDMA_InitTypeDef::MemoryOrM2MDstAddress, LL_BDMA_InitTypeDef::MemoryOrM2MDstDataSize, LL_BDMA_InitTypeDef::MemoryOrM2MDstIncMode, LL_BDMA_InitTypeDef::Mode, LL_BDMA_InitTypeDef::NbData, LL_BDMA_InitTypeDef::PeriphOrM2MSrcAddress, LL_BDMA_InitTypeDef::PeriphOrM2MSrcDataSize, LL_BDMA_InitTypeDef::PeriphOrM2MSrcIncMode, LL_BDMA_InitTypeDef::PeriphRequest, and LL_BDMA_InitTypeDef::Priority.