FLAG Management

Functions
__STATIC_INLINE uint32_t	LL_SPI_IsActiveFlag_RXNE (SPI_TypeDef *SPIx)
	Check if Rx buffer is not empty SR RXNE LL_SPI_IsActiveFlag_RXNE. More...
__STATIC_INLINE uint32_t	LL_SPI_IsActiveFlag_TXE (SPI_TypeDef *SPIx)
	Check if Tx buffer is empty SR TXE LL_SPI_IsActiveFlag_TXE. More...
__STATIC_INLINE uint32_t	LL_SPI_IsActiveFlag_CRCERR (SPI_TypeDef *SPIx)
	Get CRC error flag SR CRCERR LL_SPI_IsActiveFlag_CRCERR. More...
__STATIC_INLINE uint32_t	LL_SPI_IsActiveFlag_MODF (SPI_TypeDef *SPIx)
	Get mode fault error flag SR MODF LL_SPI_IsActiveFlag_MODF. More...
__STATIC_INLINE uint32_t	LL_SPI_IsActiveFlag_OVR (SPI_TypeDef *SPIx)
	Get overrun error flag SR OVR LL_SPI_IsActiveFlag_OVR. More...
__STATIC_INLINE uint32_t	LL_SPI_IsActiveFlag_BSY (SPI_TypeDef *SPIx)
	Get busy flag. More...
__STATIC_INLINE uint32_t	LL_SPI_IsActiveFlag_FRE (SPI_TypeDef *SPIx)
	Get frame format error flag SR FRE LL_SPI_IsActiveFlag_FRE. More...
__STATIC_INLINE uint32_t	LL_SPI_GetRxFIFOLevel (SPI_TypeDef *SPIx)
	Get FIFO reception Level SR FRLVL LL_SPI_GetRxFIFOLevel. More...
__STATIC_INLINE uint32_t	LL_SPI_GetTxFIFOLevel (SPI_TypeDef *SPIx)
	Get FIFO Transmission Level SR FTLVL LL_SPI_GetTxFIFOLevel. More...
__STATIC_INLINE void	LL_SPI_ClearFlag_CRCERR (SPI_TypeDef *SPIx)
	Clear CRC error flag SR CRCERR LL_SPI_ClearFlag_CRCERR. More...
__STATIC_INLINE void	LL_SPI_ClearFlag_MODF (SPI_TypeDef *SPIx)
	Clear mode fault error flag. More...
__STATIC_INLINE void	LL_SPI_ClearFlag_OVR (SPI_TypeDef *SPIx)
	Clear overrun error flag. More...
__STATIC_INLINE void	LL_SPI_ClearFlag_FRE (SPI_TypeDef *SPIx)
	Clear frame format error flag. More...

Detailed Description

Function Documentation

LL_SPI_ClearFlag_CRCERR()

__STATIC_INLINE void LL_SPI_ClearFlag_CRCERR

(

SPI_TypeDef *

SPIx

)

Clear CRC error flag SR CRCERR LL_SPI_ClearFlag_CRCERR.

Parameters

SPIx	SPI Instance

Return values

None

Definition at line 1020 of file stm32l4xx_ll_spi.h.

{
  CLEAR_BIT(SPIx->SR, SPI_SR_CRCERR);
}

LL_SPI_ClearFlag_FRE()

__STATIC_INLINE void LL_SPI_ClearFlag_FRE

(

SPI_TypeDef *

SPIx

)

Clear frame format error flag.

Note

Clearing this flag is done by reading SPIx_SR register SR FRE LL_SPI_ClearFlag_FRE

Parameters

SPIx	SPI Instance

Return values

None

Definition at line 1065 of file stm32l4xx_ll_spi.h.

{
  __IO uint32_t tmpreg;
  tmpreg = SPIx->SR;
  (void) tmpreg;
}

LL_SPI_ClearFlag_MODF()

__STATIC_INLINE void LL_SPI_ClearFlag_MODF

(

SPI_TypeDef *

SPIx

)

Clear mode fault error flag.

Note

Clearing this flag is done by a read access to the SPIx_SR register followed by a write access to the SPIx_CR1 register SR MODF LL_SPI_ClearFlag_MODF

Parameters

SPIx	SPI Instance

Return values

None

Definition at line 1033 of file stm32l4xx_ll_spi.h.

{
  __IO uint32_t tmpreg_sr;
  tmpreg_sr = SPIx->SR;
  (void) tmpreg_sr;
  CLEAR_BIT(SPIx->CR1, SPI_CR1_SPE);
}

LL_SPI_ClearFlag_OVR()

__STATIC_INLINE void LL_SPI_ClearFlag_OVR

(

SPI_TypeDef *

SPIx

)

Clear overrun error flag.

Note

Clearing this flag is done by a read access to the SPIx_DR register followed by a read access to the SPIx_SR register SR OVR LL_SPI_ClearFlag_OVR

Parameters

SPIx	SPI Instance

Return values

None

Definition at line 1049 of file stm32l4xx_ll_spi.h.

{
  __IO uint32_t tmpreg;
  tmpreg = SPIx->DR;
  (void) tmpreg;
  tmpreg = SPIx->SR;
  (void) tmpreg;
}

LL_SPI_GetRxFIFOLevel()

__STATIC_INLINE uint32_t LL_SPI_GetRxFIFOLevel

(

SPI_TypeDef *

SPIx

)

Get FIFO reception Level SR FRLVL LL_SPI_GetRxFIFOLevel.

Parameters

SPIx	SPI Instance

Return values

Returned

value can be one of the following values: LL_SPI_RX_FIFO_EMPTY LL_SPI_RX_FIFO_QUARTER_FULL LL_SPI_RX_FIFO_HALF_FULL LL_SPI_RX_FIFO_FULL

Definition at line 994 of file stm32l4xx_ll_spi.h.

{
  return (uint32_t)(READ_BIT(SPIx->SR, SPI_SR_FRLVL));
}

LL_SPI_GetTxFIFOLevel()

__STATIC_INLINE uint32_t LL_SPI_GetTxFIFOLevel

(

SPI_TypeDef *

SPIx

)

Get FIFO Transmission Level SR FTLVL LL_SPI_GetTxFIFOLevel.

Parameters

SPIx	SPI Instance

Return values

Returned

value can be one of the following values: LL_SPI_TX_FIFO_EMPTY LL_SPI_TX_FIFO_QUARTER_FULL LL_SPI_TX_FIFO_HALF_FULL LL_SPI_TX_FIFO_FULL

Definition at line 1009 of file stm32l4xx_ll_spi.h.

{
  return (uint32_t)(READ_BIT(SPIx->SR, SPI_SR_FTLVL));
}

LL_SPI_IsActiveFlag_BSY()

__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_BSY

(

SPI_TypeDef *

SPIx

)

Get busy flag.

Note

The BSY flag is cleared under any one of the following conditions: -When the SPI is correctly disabled -When a fault is detected in Master mode (MODF bit set to 1) -In Master mode, when it finishes a data transmission and no new data is ready to be sent -In Slave mode, when the BSY flag is set to '0' for at least one SPI clock cycle between each data transfer. SR BSY LL_SPI_IsActiveFlag_BSY

Parameters

SPIx	SPI Instance

Return values

State

of bit (1 or 0).

Definition at line 968 of file stm32l4xx_ll_spi.h.

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

LL_SPI_IsActiveFlag_CRCERR()

__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_CRCERR

(

SPI_TypeDef *

SPIx

)

Get CRC error flag SR CRCERR LL_SPI_IsActiveFlag_CRCERR.

Parameters

SPIx	SPI Instance

Return values

State

of bit (1 or 0).

Definition at line 928 of file stm32l4xx_ll_spi.h.

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

LL_SPI_IsActiveFlag_FRE()

__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_FRE

(

SPI_TypeDef *

SPIx

)

Get frame format error flag SR FRE LL_SPI_IsActiveFlag_FRE.

Parameters

SPIx	SPI Instance

Return values

State

of bit (1 or 0).

Definition at line 979 of file stm32l4xx_ll_spi.h.

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

LL_SPI_IsActiveFlag_MODF()

__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_MODF

(

SPI_TypeDef *

SPIx

)

Get mode fault error flag SR MODF LL_SPI_IsActiveFlag_MODF.

Parameters

SPIx	SPI Instance

Return values

State

of bit (1 or 0).

Definition at line 939 of file stm32l4xx_ll_spi.h.

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

LL_SPI_IsActiveFlag_OVR()

__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_OVR

(

SPI_TypeDef *

SPIx

)

Get overrun error flag SR OVR LL_SPI_IsActiveFlag_OVR.

Parameters

SPIx	SPI Instance

Return values

State

of bit (1 or 0).

Definition at line 950 of file stm32l4xx_ll_spi.h.

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

LL_SPI_IsActiveFlag_RXNE()

__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_RXNE

(

SPI_TypeDef *

SPIx

)

Check if Rx buffer is not empty SR RXNE LL_SPI_IsActiveFlag_RXNE.

Parameters

SPIx	SPI Instance

Return values

State

of bit (1 or 0).

Definition at line 906 of file stm32l4xx_ll_spi.h.

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

LL_SPI_IsActiveFlag_TXE()

__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_TXE

(

SPI_TypeDef *

SPIx

)

Check if Tx buffer is empty SR TXE LL_SPI_IsActiveFlag_TXE.

Parameters

SPIx	SPI Instance

Return values

State

of bit (1 or 0).

Definition at line 917 of file stm32l4xx_ll_spi.h.

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