stm32l4xx_hal_crc.c File Reference

CRC HAL module driver. This file provides firmware functions to manage the following functionalities of the Cyclic Redundancy Check (CRC) peripheral: + Initialization and de-initialization functions + Peripheral Control functions + Peripheral State functions. More...

#include "stm32l4xx_hal.h"

Go to the source code of this file.

Functions
static uint32_t	CRC_Handle_8 (CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength)
	Enter 8-bit input data to the CRC calculator.
static uint32_t	CRC_Handle_16 (CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength)
	Enter 16-bit input data to the CRC calculator.
HAL_StatusTypeDef	HAL_CRC_Init (CRC_HandleTypeDef *hcrc)
	Initialize the CRC according to the specified parameters in the CRC_InitTypeDef and create the associated handle.
HAL_StatusTypeDef	HAL_CRC_DeInit (CRC_HandleTypeDef *hcrc)
	DeInitialize the CRC peripheral.
__weak void	HAL_CRC_MspInit (CRC_HandleTypeDef *hcrc)
	Initializes the CRC MSP.
__weak void	HAL_CRC_MspDeInit (CRC_HandleTypeDef *hcrc)
	DeInitialize the CRC MSP.
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.
HAL_CRC_StateTypeDef	HAL_CRC_GetState (CRC_HandleTypeDef *hcrc)
	Return the CRC handle state.

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Detailed Description

CRC HAL module driver. This file provides firmware functions to manage the following functionalities of the Cyclic Redundancy Check (CRC) peripheral: + Initialization and de-initialization functions + Peripheral Control functions + Peripheral State functions.

Author:

MCD Application Team

 ===============================================================================
                     ##### How to use this driver #####
 ===============================================================================
    [..]
         (+) Enable CRC AHB clock using __HAL_RCC_CRC_CLK_ENABLE();
         (+) Initialize CRC calculator
             (++) specify generating polynomial (IP default or non-default one)
             (++) specify initialization value (IP default or non-default one)
             (++) specify input data format
             (++) specify input or output data inversion mode if any
         (+) Use HAL_CRC_Accumulate() function to compute the CRC value of the
             input data buffer starting with the previously computed CRC as
             initialization value
         (+) Use HAL_CRC_Calculate() function to compute the CRC value of the
             input data buffer starting with the defined initialization value
             (default or non-default) to initiate CRC calculation

  

Attention:

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Definition in file stm32l4xx_hal_crc.c.