management functions. More...

Functions
uint32_t	HAL_CRC_Accumulate (CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength)
	Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer starting with the previously computed CRC as initialization value.
uint32_t	HAL_CRC_Calculate (CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength)
	Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer starting with hcrc->Instance->INIT as initialization value.

Detailed Description

management functions.

 ===============================================================================
                      ##### Peripheral Control functions #####
 ===============================================================================
    [..]  This section provides functions allowing to:
      (+) compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer
          using combination of the previous CRC value and the new one.

       [..]  or

      (+) compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer
          independently of the previous CRC value.

Function Documentation

uint32_t HAL_CRC_Accumulate	(	CRC_HandleTypeDef *	hcrc,
		uint32_t	pBuffer[],
		uint32_t	BufferLength
	)

Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer starting with the previously computed CRC as initialization value.

Parameters:

hcrc	CRC handle
pBuffer	pointer to the input data buffer, exact input data format is provided by hcrc->InputDataFormat.
BufferLength	input data buffer length (number of bytes if pBuffer type is * uint8_t, number of half-words if pBuffer type is * uint16_t, number of words if pBuffer type is * uint32_t).

Note:: By default, the API expects a uint32_t pointer as input buffer parameter. Input buffer pointers with other types simply need to be cast in uint32_t and the API will internally adjust its input data processing based on the handle field hcrc->InputDataFormat.

Return values:

uint32_t CRC (returned value LSBs for CRC shorter than 32 bits)

Definition at line 303 of file stm32l4xx_hal_crc.c.

References CRC_Handle_16(), CRC_Handle_8(), CRC_INPUTDATA_FORMAT_BYTES, CRC_INPUTDATA_FORMAT_HALFWORDS, CRC_INPUTDATA_FORMAT_WORDS, HAL_CRC_STATE_BUSY, HAL_CRC_STATE_READY, CRC_HandleTypeDef::InputDataFormat, CRC_HandleTypeDef::Instance, and CRC_HandleTypeDef::State.

uint32_t HAL_CRC_Calculate	(	CRC_HandleTypeDef *	hcrc,
		uint32_t	pBuffer[],
		uint32_t	BufferLength
	)

Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer starting with hcrc->Instance->INIT as initialization value.

Parameters:

hcrc	CRC handle
pBuffer	pointer to the input data buffer, exact input data format is provided by hcrc->InputDataFormat.
BufferLength	input data buffer length (number of bytes if pBuffer type is * uint8_t, number of half-words if pBuffer type is * uint16_t, number of words if pBuffer type is * uint32_t).

Note:: By default, the API expects a uint32_t pointer as input buffer parameter. Input buffer pointers with other types simply need to be cast in uint32_t and the API will internally adjust its input data processing based on the handle field hcrc->InputDataFormat.

Return values:

uint32_t CRC (returned value LSBs for CRC shorter than 32 bits)

Definition at line 361 of file stm32l4xx_hal_crc.c.

References __HAL_CRC_DR_RESET, CRC_Handle_16(), CRC_Handle_8(), CRC_INPUTDATA_FORMAT_BYTES, CRC_INPUTDATA_FORMAT_HALFWORDS, CRC_INPUTDATA_FORMAT_WORDS, HAL_CRC_STATE_BUSY, HAL_CRC_STATE_READY, CRC_HandleTypeDef::InputDataFormat, CRC_HandleTypeDef::Instance, and CRC_HandleTypeDef::State.

Functions

Detailed Description

Function Documentation