/******************************************************************************

	Title:		Timpy - Remote - MakeRomImageSum
	Comment:	Tiny MP3 Player [ Timpy ] Rev4.x リモート用ツール
				EEPROMバイナリイメージのチェックサム生成
	File Name:	mkimgsum.c
	Version:	1.0
	(		Oct 30, 2005	イニシャルリリース)
	Last Update:	Oct. 30, 2005
	Copyright(C) 	Chiaki Nakajima

******************************************************************************/

/* Include File(s) ***********************************************************/

#include	<stdio.h>
#include	<stdlib.h>

/* Declaration(s) ************************************************************/

#ifndef NULL
#define	NULL	((void *)0)
#endif

/* Main **********************************************************************/

int main(int argc, char *argv[]) {
	unsigned char	Sum;
	int	Dat, CharCtr;
	long	ImageByteCtr;
	FILE	*fImage, *fSum;
	
	if (argc != 3) {
		fprintf(stderr, "Invalid arguments.");
		return EXIT_FAILURE;
	}

	if ((fSum = fopen(argv[2], "w")) == NULL) return EXIT_FAILURE;
	if ((fImage = fopen(argv[1], "rb")) == NULL) return EXIT_FAILURE;

	Sum = 0;
	CharCtr = 0;
	ImageByteCtr = 0L;

	while (EOF != (Dat = fgetc(fImage))) {
		Sum += (unsigned char)(Dat & 0xff);
		++ImageByteCtr;
		if (0 == (ImageByteCtr % 256)) {
			fprintf(fSum, "%02X", Sum);
			Sum = 0;
			++CharCtr;
			if (40 == CharCtr) {
				fprintf(fSum, "\n");
				CharCtr = 0;
			}
		}
	}
	fprintf(stdout, "ImageByteCtr = %d", ImageByteCtr);
	fclose(fSum);
	fclose(fImage);
	return EXIT_SUCCESS;
}

/* End ***********************************************************************/