stbcsum.c File Reference

Check sum calculation routines. More...

#include <techtype.h>
#include <dbgfuncs.h>

Functions
U8BIT	STB_CalcChecksum (U8BIT *data_ptr, U32BIT data_size)
	Calculates the checksum to zero for the data block provided. More...
BOOLEAN	STB_CheckChecksum (U8BIT *data_ptr, U32BIT data_size)
	Validates the checksum to zero for the block pointer provided. More...
U16BIT	STB_GetBE16Bit (U16BIT *addr)
	Returns 16bit int from address, assuming value is stored in Big endian format. More...
void	STB_SetBE16Bit (U16BIT *addr, U16BIT value)
	Stores 16bit int in address, forcing value to be stored in Big endian format. More...

Detailed Description

Check sum calculation routines.

Date

14/10/2000

Function Documentation

U8BIT STB_CalcChecksum	(	U8BIT *	data_ptr,
		U32BIT	data_size
	)

Calculates the checksum to zero for the data block provided.

Parameters

U8BIT*	data_ptr - the pointer to the data block
U32BIT	data_size - size of the data

Returns

U8BIT - checksum value.

BOOLEAN STB_CheckChecksum	(	U8BIT *	data_ptr,
		U32BIT	data_size
	)

Validates the checksum to zero for the block pointer provided.

Parameters

U8BIT*	data_ptr - the pointer to the data block
U32BIT	data_size - size of the data

Returns

BOOLEAN - TRUE if checksum value is valid.

U16BIT STB_GetBE16Bit

(

U16BIT *

addr

)

Returns 16bit int from address, assuming value is stored in Big endian format.

Parameters

U16BIT*

addr - pointer to 16bit int

Returns

U16BIT - integer value.

void STB_SetBE16Bit	(	U16BIT *	addr,
		U16BIT	value
	)

Stores 16bit int in address, forcing value to be stored in Big endian format.

Parameters

U16BIT*	addr - pointer to 16bit int
U16BIT	value - integer value