0.4.3/experiments/hex_to_bin.c

/*
 *  $Id: hex_to_bin.c,v 1.1 2006/02/26 11:22:23 debug Exp $
 *
 *  Quick hack to convert .hex files (such as the AVR Hello World program at
 *  http://www.tfs.net/~petek/atmel/hiworld/hiworld.hex) into raw binaries.
 *
 *  E.g.  hex_to_bin hiworld.hex hiworld.bin
 *
 *  and then:   gxemul -E bareavr .....  0:hiworld.bin
 */

#include <stdio.h>


int fromhex(char *p)
{
        char c1 = p[0], c2 = p[1];
        if (c1 >= '0' && c1 <= '9')
                c1 -= '0';
        else if (c1 >= 'A' && c1 <= 'F')
                c1 = c1 - 'A' + 10;
        if (c2 >= '0' && c2 <= '9')
                c2 -= '0';
        else if (c2 >= 'A' && c2 <= 'F')
                c2 = c2 - 'A' + 10;
        return c1 * 16 + c2;
}


int hex_to_bin(char *fname, char *outname)
{
        FILE *f = fopen(fname, "r");
        FILE *fout = fopen(outname, "w");

        while (!feof(f)) {
                char s[80];
                int nbytes, i, addr;

                s[0] = '\0';
                fgets(s, sizeof(s), f);
                if (s[0] == 0)
                        break;
                if (s[0] != ':')
                        continue;
                nbytes = fromhex(s+1);
                addr = fromhex(s+3) * 256 + fromhex(s+5);
                fseek(fout, addr, SEEK_SET);
                for (i=0; i<nbytes; i++) {
                        unsigned char b = fromhex(s+9+i*2);
                        fwrite(&b, 1, 1, fout);
                }
        }

        fclose(fout);
        fclose(f);
        return 0;
}


int main(int argc, char *argv[])
{
        if (argc < 3) {
                fprintf(stderr, "usage: %s file.hex output.bin\n", argv[0]);
                exit(1);
        }

        return hex_to_bin(argv[1], argv[2]);
}

1	/*
2	* $Id: hex_to_bin.c,v 1.1 2006/02/26 11:22:23 debug Exp $
3	*
4	* Quick hack to convert .hex files (such as the AVR Hello World program at
5	* http://www.tfs.net/~petek/atmel/hiworld/hiworld.hex) into raw binaries.
6	*
7	* E.g. hex_to_bin hiworld.hex hiworld.bin
8	*
9	* and then: gxemul -E bareavr ..... 0:hiworld.bin
10	*/
11
12	#include <stdio.h>
13
14
15	int fromhex(char *p)
16	{
17	char c1 = p[0], c2 = p[1];
18	if (c1 >= '0' && c1 <= '9')
19	c1 -= '0';
20	else if (c1 >= 'A' && c1 <= 'F')
21	c1 = c1 - 'A' + 10;
22	if (c2 >= '0' && c2 <= '9')
23	c2 -= '0';
24	else if (c2 >= 'A' && c2 <= 'F')
25	c2 = c2 - 'A' + 10;
26	return c1 * 16 + c2;
27	}
28
29
30	int hex_to_bin(char fname, char outname)
31	{
32	FILE *f = fopen(fname, "r");
33	FILE *fout = fopen(outname, "w");
34
35	while (!feof(f)) {
36	char s[80];
37	int nbytes, i, addr;
38
39	s[0] = '\0';
40	fgets(s, sizeof(s), f);
41	if (s[0] == 0)
42	break;
43	if (s[0] != ':')
44	continue;
45	nbytes = fromhex(s+1);
46	addr = fromhex(s+3) * 256 + fromhex(s+5);
47	fseek(fout, addr, SEEK_SET);
48	for (i=0; i<nbytes; i++) {
49	unsigned char b = fromhex(s+9+i*2);
50	fwrite(&b, 1, 1, fout);
51	}
52	}
53
54	fclose(fout);
55	fclose(f);
56	return 0;
57	}
58
59
60	int main(int argc, char *argv[])
61	{
62	if (argc < 3) {
63	fprintf(stderr, "usage: %s file.hex output.bin\n", argv[0]);
64	exit(1);
65	}
66
67	return hex_to_bin(argv[1], argv[2]);
68	}
69