CRC Management

Functions
__STATIC_INLINE void	LL_SPI_EnableCRC (SPI_TypeDef *SPIx)
	Enable CRC. More...
__STATIC_INLINE void	LL_SPI_DisableCRC (SPI_TypeDef *SPIx)
	Disable CRC. More...
__STATIC_INLINE uint32_t	LL_SPI_IsEnabledCRC (SPI_TypeDef *SPIx)
	Check if CRC is enabled. More...
__STATIC_INLINE void	LL_SPI_SetCRCWidth (SPI_TypeDef *SPIx, uint32_t CRCLength)
	Set CRC Length. More...
__STATIC_INLINE uint32_t	LL_SPI_GetCRCWidth (SPI_TypeDef *SPIx)
	Get CRC Length CR1 CRCL LL_SPI_GetCRCWidth. More...
__STATIC_INLINE void	LL_SPI_SetCRCNext (SPI_TypeDef *SPIx)
	Set CRCNext to transfer CRC on the line. More...
__STATIC_INLINE void	LL_SPI_SetCRCPolynomial (SPI_TypeDef *SPIx, uint32_t CRCPoly)
	Set polynomial for CRC calculation CRCPR CRCPOLY LL_SPI_SetCRCPolynomial. More...
__STATIC_INLINE uint32_t	LL_SPI_GetCRCPolynomial (SPI_TypeDef *SPIx)
	Get polynomial for CRC calculation CRCPR CRCPOLY LL_SPI_GetCRCPolynomial. More...
__STATIC_INLINE uint32_t	LL_SPI_GetRxCRC (SPI_TypeDef *SPIx)
	Get Rx CRC RXCRCR RXCRC LL_SPI_GetRxCRC. More...
__STATIC_INLINE uint32_t	LL_SPI_GetTxCRC (SPI_TypeDef *SPIx)
	Get Tx CRC TXCRCR TXCRC LL_SPI_GetTxCRC. More...

Detailed Description

Function Documentation

LL_SPI_DisableCRC()

__STATIC_INLINE void LL_SPI_DisableCRC

(

SPI_TypeDef *

SPIx

)

Disable CRC.

Note

This bit should be written only when SPI is disabled (SPE = 0) for correct operation. CR1 CRCEN LL_SPI_DisableCRC

Parameters

SPIx	SPI Instance

Return values

None

Definition at line 711 of file stm32l4xx_ll_spi.h.

{
  CLEAR_BIT(SPIx->CR1, SPI_CR1_CRCEN);
}

LL_SPI_EnableCRC()

__STATIC_INLINE void LL_SPI_EnableCRC

(

SPI_TypeDef *

SPIx

)

Enable CRC.

Note

This bit should be written only when SPI is disabled (SPE = 0) for correct operation. CR1 CRCEN LL_SPI_EnableCRC

Parameters

SPIx	SPI Instance

Return values

None

Definition at line 699 of file stm32l4xx_ll_spi.h.

{
  SET_BIT(SPIx->CR1, SPI_CR1_CRCEN);
}

LL_SPI_GetCRCPolynomial()

__STATIC_INLINE uint32_t LL_SPI_GetCRCPolynomial

(

SPI_TypeDef *

SPIx

)

Get polynomial for CRC calculation CRCPR CRCPOLY LL_SPI_GetCRCPolynomial.

Parameters

SPIx	SPI Instance

Return values

Returned

value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF

Definition at line 786 of file stm32l4xx_ll_spi.h.

{
  return (uint32_t)(READ_REG(SPIx->CRCPR));
}

LL_SPI_GetCRCWidth()

__STATIC_INLINE uint32_t LL_SPI_GetCRCWidth

(

SPI_TypeDef *

SPIx

)

Get CRC Length CR1 CRCL LL_SPI_GetCRCWidth.

Parameters

SPIx	SPI Instance

Return values

Returned

value can be one of the following values: LL_SPI_CRC_8BIT LL_SPI_CRC_16BIT

Definition at line 751 of file stm32l4xx_ll_spi.h.

{
  return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_CRCL));
}

LL_SPI_GetRxCRC()

__STATIC_INLINE uint32_t LL_SPI_GetRxCRC

(

SPI_TypeDef *

SPIx

)

Get Rx CRC RXCRCR RXCRC LL_SPI_GetRxCRC.

Parameters

SPIx	SPI Instance

Return values

Returned

value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF

Definition at line 797 of file stm32l4xx_ll_spi.h.

{
  return (uint32_t)(READ_REG(SPIx->RXCRCR));
}

LL_SPI_GetTxCRC()

__STATIC_INLINE uint32_t LL_SPI_GetTxCRC

(

SPI_TypeDef *

SPIx

)

Get Tx CRC TXCRCR TXCRC LL_SPI_GetTxCRC.

Parameters

SPIx	SPI Instance

Return values

Returned

value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF

Definition at line 808 of file stm32l4xx_ll_spi.h.

{
  return (uint32_t)(READ_REG(SPIx->TXCRCR));
}

LL_SPI_IsEnabledCRC()

__STATIC_INLINE uint32_t LL_SPI_IsEnabledCRC

(

SPI_TypeDef *

SPIx

)

Check if CRC is enabled.

Note

This bit should be written only when SPI is disabled (SPE = 0) for correct operation. CR1 CRCEN LL_SPI_IsEnabledCRC

Parameters

SPIx	SPI Instance

Return values

State

of bit (1 or 0).

Definition at line 723 of file stm32l4xx_ll_spi.h.

{
  return ((READ_BIT(SPIx->CR1, SPI_CR1_CRCEN) == (SPI_CR1_CRCEN)) ? 1UL : 0UL);
}

LL_SPI_SetCRCNext()

__STATIC_INLINE void LL_SPI_SetCRCNext

(

SPI_TypeDef *

SPIx

)

Set CRCNext to transfer CRC on the line.

Note

This bit has to be written as soon as the last data is written in the SPIx_DR register. CR1 CRCNEXT LL_SPI_SetCRCNext

Parameters

SPIx	SPI Instance

Return values

None

Definition at line 763 of file stm32l4xx_ll_spi.h.

{
  SET_BIT(SPIx->CR1, SPI_CR1_CRCNEXT);
}

LL_SPI_SetCRCPolynomial()

__STATIC_INLINE void LL_SPI_SetCRCPolynomial	(	SPI_TypeDef *	SPIx,
		uint32_t	CRCPoly
	)

Set polynomial for CRC calculation CRCPR CRCPOLY LL_SPI_SetCRCPolynomial.

Parameters

SPIx	SPI Instance
CRCPoly	This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFFFF

Return values

None

Definition at line 775 of file stm32l4xx_ll_spi.h.

{
  WRITE_REG(SPIx->CRCPR, (uint16_t)CRCPoly);
}

LL_SPI_SetCRCWidth()

__STATIC_INLINE void LL_SPI_SetCRCWidth	(	SPI_TypeDef *	SPIx,
		uint32_t	CRCLength
	)

Set CRC Length.

Note

This bit should be written only when SPI is disabled (SPE = 0) for correct operation. CR1 CRCL LL_SPI_SetCRCWidth

Parameters

SPIx	SPI Instance
CRCLength	This parameter can be one of the following values: LL_SPI_CRC_8BIT LL_SPI_CRC_16BIT

Return values

None

Definition at line 738 of file stm32l4xx_ll_spi.h.

{
  MODIFY_REG(SPIx->CR1, SPI_CR1_CRCL, CRCLength);
}