1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/*
* 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
*
* Note: The experimental AVR emulation was removed from GXemul at 20070511.
* Use versions prior to this versions if you want to play with AVR
* emulation.
*/
#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]);
}
|
