Extended Initialization/de-initialization functions

Extended Initialization and Configuration functions. More...

Functions
HAL_StatusTypeDef	HAL_CRCEx_Polynomial_Set (CRC_HandleTypeDef *hcrc, uint32_t Pol, uint32_t PolyLength)
	Initialize the CRC polynomial if different from default one.
HAL_StatusTypeDef	HAL_CRCEx_Input_Data_Reverse (CRC_HandleTypeDef *hcrc, uint32_t InputReverseMode)
	Set the Reverse Input data mode.
HAL_StatusTypeDef	HAL_CRCEx_Output_Data_Reverse (CRC_HandleTypeDef *hcrc, uint32_t OutputReverseMode)
	Set the Reverse Output data mode.

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Detailed Description

Extended Initialization and Configuration functions.

 ===============================================================================
            ##### Extended configuration functions #####
 ===============================================================================
    [..]  This section provides functions allowing to:
      (+) Configure the generating polynomial
      (+) Configure the input data inversion
      (+) Configure the output data inversion

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Function Documentation

HAL_StatusTypeDef HAL_CRCEx_Input_Data_Reverse	(	CRC_HandleTypeDef *	hcrc,
		uint32_t	InputReverseMode
	)

Set the Reverse Input data mode.

Parameters:

hcrc	CRC handle
InputReverseMode	Input Data inversion mode. This parameter can be one of the following values: CRC_INPUTDATA_INVERSION_NONE no change in bit order (default value) CRC_INPUTDATA_INVERSION_BYTE Byte-wise bit reversal CRC_INPUTDATA_INVERSION_HALFWORD HalfWord-wise bit reversal CRC_INPUTDATA_INVERSION_WORD Word-wise bit reversal

Return values:

HAL

status

Definition at line 175 of file stm32l4xx_hal_crc_ex.c.

References assert_param, HAL_CRC_STATE_BUSY, HAL_CRC_STATE_READY, CRC_HandleTypeDef::Instance, IS_CRC_INPUTDATA_INVERSION_MODE, and CRC_HandleTypeDef::State.

HAL_StatusTypeDef HAL_CRCEx_Output_Data_Reverse	(	CRC_HandleTypeDef *	hcrc,
		uint32_t	OutputReverseMode
	)

Set the Reverse Output data mode.

Parameters:

hcrc	CRC handle
OutputReverseMode	Output Data inversion mode. This parameter can be one of the following values: CRC_OUTPUTDATA_INVERSION_DISABLE no CRC inversion (default value) CRC_OUTPUTDATA_INVERSION_ENABLE bit-level inversion (e.g. for a 8-bit CRC: 0xB5 becomes 0xAD)

Return values:

HAL

status

Definition at line 201 of file stm32l4xx_hal_crc_ex.c.

References assert_param, HAL_CRC_STATE_BUSY, HAL_CRC_STATE_READY, CRC_HandleTypeDef::Instance, IS_CRC_OUTPUTDATA_INVERSION_MODE, and CRC_HandleTypeDef::State.

HAL_StatusTypeDef HAL_CRCEx_Polynomial_Set	(	CRC_HandleTypeDef *	hcrc,
		uint32_t	Pol,
		uint32_t	PolyLength
	)

Initialize the CRC polynomial if different from default one.

Parameters:

hcrc	CRC handle
Pol	CRC generating polynomial (7, 8, 16 or 32-bit long). This parameter is written in normal representation, e.g. for a polynomial of degree 7, X^7 + X^6 + X^5 + X^2 + 1 is written 0x65 for a polynomial of degree 16, X^16 + X^12 + X^5 + 1 is written 0x1021
PolyLength	CRC polynomial length. This parameter can be one of the following values: CRC_POLYLENGTH_7B 7-bit long CRC (generating polynomial of degree 7) CRC_POLYLENGTH_8B 8-bit long CRC (generating polynomial of degree 8) CRC_POLYLENGTH_16B 16-bit long CRC (generating polynomial of degree 16) CRC_POLYLENGTH_32B 32-bit long CRC (generating polynomial of degree 32)

Return values:

HAL

status

Definition at line 105 of file stm32l4xx_hal_crc_ex.c.

References assert_param, CRC_POLYLENGTH_16B, CRC_POLYLENGTH_32B, CRC_POLYLENGTH_7B, CRC_POLYLENGTH_8B, HAL_CRC_LENGTH_16B, HAL_CRC_LENGTH_7B, HAL_CRC_LENGTH_8B, CRC_HandleTypeDef::Instance, and IS_CRC_POL_LENGTH.

Referenced by HAL_CRC_Init().