Driver for the checksum calculation. More...

#include "chksum.h"
#include "cpu_cfg.h"

Include dependency graph for chksum.c:

Functions
uint32_t	CHK_modulo32addition (uint8_t *data, uint32_t len)
	CHK_modulo32addition provides modulo32bitaddition algorithm. More...

STD_RETURN_TYPE_e	CHK_Flashchecksum (const VER_ValidStruct_s *valid_struct)
	CHK_Flashchecksum provides validation for the currently used firmware. More...

uint32_t	CHK_crc32 (uint8_t *data, uint32_t len)
	CHK_crc32 provides crc32 algorithm. More...

Variables
CHK_STATUS_s	chk_status

Detailed Description

Driver for the checksum calculation.

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Author: foxBMS Team

Date: 28.08.2015 (date of creation)

Module-prefix CHK

This module provides some checksum functionality using either modulo32bitaddition as fast and easy algorithm or hardware supported crc32.

Function Documentation

◆ CHK_crc32()

uint32_t CHK_crc32	(	uint8_t *	data,
		uint32_t	len
	)

CHK_crc32 provides crc32 algorithm.

This function provides crc32 checksum functionality with hardware support. It has been modified to match the common implementations used in zlib/WinZip/... RCC_CRC_CLK needs to be enabled.

Returns: (type: uint32_t)

◆ CHK_Flashchecksum()

STD_RETURN_TYPE_e CHK_Flashchecksum ( const VER_ValidStruct_s * valid_struct )

CHK_Flashchecksum provides validation for the currently used firmware.

This function gets called during startup and validates the currently used firmware by doing a checksum over pre-defined memory areas and compares result with a pre-calculated checksum stored in the flashheader

Returns: (type: uint8_t)

Here is the call graph for this function:

◆ CHK_modulo32addition()

uint32_t CHK_modulo32addition	(	uint8_t *	data,
		uint32_t	len
	)

CHK_modulo32addition provides modulo32bitaddition algorithm.

This function provides some basic checksum functionality using module32bitaddition algorithm. It has no hardware dependencies.

Returns: (type: uint32_t)

Variable Documentation

◆ chk_status

CHK_STATUS_s chk_status

Functions

Variables