DMA Management

Functions
__STATIC_INLINE void	LL_SPI_EnableDMAReq_RX (SPI_TypeDef *SPIx)
	Enable DMA Rx CR2 RXDMAEN LL_SPI_EnableDMAReq_RX. More...
__STATIC_INLINE void	LL_SPI_DisableDMAReq_RX (SPI_TypeDef *SPIx)
	Disable DMA Rx CR2 RXDMAEN LL_SPI_DisableDMAReq_RX. More...
__STATIC_INLINE uint32_t	LL_SPI_IsEnabledDMAReq_RX (SPI_TypeDef *SPIx)
	Check if DMA Rx is enabled CR2 RXDMAEN LL_SPI_IsEnabledDMAReq_RX. More...
__STATIC_INLINE void	LL_SPI_EnableDMAReq_TX (SPI_TypeDef *SPIx)
	Enable DMA Tx CR2 TXDMAEN LL_SPI_EnableDMAReq_TX. More...
__STATIC_INLINE void	LL_SPI_DisableDMAReq_TX (SPI_TypeDef *SPIx)
	Disable DMA Tx CR2 TXDMAEN LL_SPI_DisableDMAReq_TX. More...
__STATIC_INLINE uint32_t	LL_SPI_IsEnabledDMAReq_TX (SPI_TypeDef *SPIx)
	Check if DMA Tx is enabled CR2 TXDMAEN LL_SPI_IsEnabledDMAReq_TX. More...
__STATIC_INLINE void	LL_SPI_SetDMAParity_RX (SPI_TypeDef *SPIx, uint32_t Parity)
	Set parity of Last DMA reception CR2 LDMARX LL_SPI_SetDMAParity_RX. More...
__STATIC_INLINE uint32_t	LL_SPI_GetDMAParity_RX (SPI_TypeDef *SPIx)
	Get parity configuration for Last DMA reception CR2 LDMARX LL_SPI_GetDMAParity_RX. More...
__STATIC_INLINE void	LL_SPI_SetDMAParity_TX (SPI_TypeDef *SPIx, uint32_t Parity)
	Set parity of Last DMA transmission CR2 LDMATX LL_SPI_SetDMAParity_TX. More...
__STATIC_INLINE uint32_t	LL_SPI_GetDMAParity_TX (SPI_TypeDef *SPIx)
	Get parity configuration for Last DMA transmission CR2 LDMATX LL_SPI_GetDMAParity_TX. More...
__STATIC_INLINE uint32_t	LL_SPI_DMA_GetRegAddr (SPI_TypeDef *SPIx)
	Get the data register address used for DMA transfer DR DR LL_SPI_DMA_GetRegAddr. More...

Detailed Description

Function Documentation

LL_SPI_DisableDMAReq_RX()

__STATIC_INLINE void LL_SPI_DisableDMAReq_RX

(

SPI_TypeDef *

SPIx

)

Disable DMA Rx CR2 RXDMAEN LL_SPI_DisableDMAReq_RX.

Parameters

SPIx	SPI Instance

Return values

None

Definition at line 1206 of file stm32l4xx_ll_spi.h.

{
  CLEAR_BIT(SPIx->CR2, SPI_CR2_RXDMAEN);
}

LL_SPI_DisableDMAReq_TX()

__STATIC_INLINE void LL_SPI_DisableDMAReq_TX

(

SPI_TypeDef *

SPIx

)

Disable DMA Tx CR2 TXDMAEN LL_SPI_DisableDMAReq_TX.

Parameters

SPIx	SPI Instance

Return values

None

Definition at line 1239 of file stm32l4xx_ll_spi.h.

{
  CLEAR_BIT(SPIx->CR2, SPI_CR2_TXDMAEN);
}

LL_SPI_DMA_GetRegAddr()

__STATIC_INLINE uint32_t LL_SPI_DMA_GetRegAddr

(

SPI_TypeDef *

SPIx

)

Get the data register address used for DMA transfer DR DR LL_SPI_DMA_GetRegAddr.

Parameters

SPIx	SPI Instance

Return values

Address

of data register

Definition at line 1315 of file stm32l4xx_ll_spi.h.

{
  return (uint32_t) & (SPIx->DR);
}

LL_SPI_EnableDMAReq_RX()

__STATIC_INLINE void LL_SPI_EnableDMAReq_RX

(

SPI_TypeDef *

SPIx

)

Enable DMA Rx CR2 RXDMAEN LL_SPI_EnableDMAReq_RX.

Parameters

SPIx	SPI Instance

Return values

None

Definition at line 1195 of file stm32l4xx_ll_spi.h.

{
  SET_BIT(SPIx->CR2, SPI_CR2_RXDMAEN);
}

LL_SPI_EnableDMAReq_TX()

__STATIC_INLINE void LL_SPI_EnableDMAReq_TX

(

SPI_TypeDef *

SPIx

)

Enable DMA Tx CR2 TXDMAEN LL_SPI_EnableDMAReq_TX.

Parameters

SPIx	SPI Instance

Return values

None

Definition at line 1228 of file stm32l4xx_ll_spi.h.

{
  SET_BIT(SPIx->CR2, SPI_CR2_TXDMAEN);
}

LL_SPI_GetDMAParity_RX()

__STATIC_INLINE uint32_t LL_SPI_GetDMAParity_RX

(

SPI_TypeDef *

SPIx

)

Get parity configuration for Last DMA reception CR2 LDMARX LL_SPI_GetDMAParity_RX.

Parameters

SPIx	SPI Instance

Return values

Returned

value can be one of the following values: LL_SPI_DMA_PARITY_ODD LL_SPI_DMA_PARITY_EVEN

Definition at line 1277 of file stm32l4xx_ll_spi.h.

{
  return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_LDMARX) >> SPI_CR2_LDMARX_Pos);
}

LL_SPI_GetDMAParity_TX()

__STATIC_INLINE uint32_t LL_SPI_GetDMAParity_TX

(

SPI_TypeDef *

SPIx

)

Get parity configuration for Last DMA transmission CR2 LDMATX LL_SPI_GetDMAParity_TX.

Parameters

SPIx	SPI Instance

Return values

Returned

value can be one of the following values: LL_SPI_DMA_PARITY_ODD LL_SPI_DMA_PARITY_EVEN

Definition at line 1304 of file stm32l4xx_ll_spi.h.

{
  return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_LDMATX) >> SPI_CR2_LDMATX_Pos);
}

LL_SPI_IsEnabledDMAReq_RX()

__STATIC_INLINE uint32_t LL_SPI_IsEnabledDMAReq_RX

(

SPI_TypeDef *

SPIx

)

Check if DMA Rx is enabled CR2 RXDMAEN LL_SPI_IsEnabledDMAReq_RX.

Parameters

SPIx	SPI Instance

Return values

State

of bit (1 or 0).

Definition at line 1217 of file stm32l4xx_ll_spi.h.

{
  return ((READ_BIT(SPIx->CR2, SPI_CR2_RXDMAEN) == (SPI_CR2_RXDMAEN)) ? 1UL : 0UL);
}

LL_SPI_IsEnabledDMAReq_TX()

__STATIC_INLINE uint32_t LL_SPI_IsEnabledDMAReq_TX

(

SPI_TypeDef *

SPIx

)

Check if DMA Tx is enabled CR2 TXDMAEN LL_SPI_IsEnabledDMAReq_TX.

Parameters

SPIx	SPI Instance

Return values

State

of bit (1 or 0).

Definition at line 1250 of file stm32l4xx_ll_spi.h.

{
  return ((READ_BIT(SPIx->CR2, SPI_CR2_TXDMAEN) == (SPI_CR2_TXDMAEN)) ? 1UL : 0UL);
}

LL_SPI_SetDMAParity_RX()

__STATIC_INLINE void LL_SPI_SetDMAParity_RX	(	SPI_TypeDef *	SPIx,
		uint32_t	Parity
	)

Set parity of Last DMA reception CR2 LDMARX LL_SPI_SetDMAParity_RX.

Parameters

SPIx	SPI Instance
Parity	This parameter can be one of the following values: LL_SPI_DMA_PARITY_ODD LL_SPI_DMA_PARITY_EVEN

Return values

None

Definition at line 1264 of file stm32l4xx_ll_spi.h.

{
  MODIFY_REG(SPIx->CR2, SPI_CR2_LDMARX, (Parity << SPI_CR2_LDMARX_Pos));
}

LL_SPI_SetDMAParity_TX()

__STATIC_INLINE void LL_SPI_SetDMAParity_TX	(	SPI_TypeDef *	SPIx,
		uint32_t	Parity
	)

Set parity of Last DMA transmission CR2 LDMATX LL_SPI_SetDMAParity_TX.

Parameters

SPIx	SPI Instance
Parity	This parameter can be one of the following values: LL_SPI_DMA_PARITY_ODD LL_SPI_DMA_PARITY_EVEN

Return values

None

Definition at line 1291 of file stm32l4xx_ll_spi.h.

{
  MODIFY_REG(SPIx->CR2, SPI_CR2_LDMATX, (Parity << SPI_CR2_LDMATX_Pos));
}