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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2012 Canonical
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#define RBUF_SIZE 640
static unsigned int asc_to_int(char a)
{
if (a >= 'A')
return (a - 'A') + 10;
else
return a - '0';
}
static unsigned int hex_to_int(const char *h)
{
return asc_to_int(*h) * 0x10 + asc_to_int(*(h + 1));
}
static unsigned int lhex_to_int(const char *h)
{
return hex_to_int(h) * 0x100 + hex_to_int(h + 2);
}
static int check_sum(const char *str, int len)
{
unsigned int sum, cal;
int i;
sum = hex_to_int(str + len - 2);
for (cal = 0, i = 1; i < len - 2; i += 2)
cal += hex_to_int(str + i);
cal = 0x100 - (cal & 0xFF);
return sum == cal;
}
static int check_hex_line(const char *str, unsigned int len)
{
if ((str[0] != ':') || (len < 11) || !check_sum(str, len) ||
(hex_to_int(str + 1) * 2 + 11 != len))
return 0;
return 1;
}
int main(int argc, char *argv[])
{
unsigned int i, addr = 0;
FILE *ifp, *ofp;
char *rbuf;
ssize_t len;
size_t buflen;
if (argc != 3) {
printf("Usage: %s <input hex file> <output file>\n", argv[0]);
return 0;
}
ifp = fopen(argv[1], "r");
ofp = fopen(argv[2], "w");
if ((ifp == NULL) || (ofp == NULL)) {
puts("failed to open file.");
return -EIO;
}
rbuf = NULL;
while ((len = getline(&rbuf, &buflen, ifp)) > 0) {
int type;
char obuf[7];
unsigned int dest_addr;
while ((rbuf[len - 1] == '\r') || (rbuf[len - 1] == '\n'))
len--;
printf("%d, %s\n", (int)len, rbuf);
if (!check_hex_line(rbuf, len))
break;
type = hex_to_int(rbuf + 7);
switch (type) {
case 4:
addr = lhex_to_int(rbuf + 9) * 0x10000;
printf("bump addr to 0x%08X\n", addr);
break;
case 0:
dest_addr = addr + lhex_to_int(rbuf + 3);
obuf[0] = 0x4c;
obuf[1] = 0xfc;
obuf[2] = hex_to_int(rbuf + 1) + 4;
obuf[3] = dest_addr;
obuf[4] = dest_addr >> 8;
obuf[5] = dest_addr >> 16;
obuf[6] = dest_addr >> 24;
if (fwrite(obuf, 7, 1, ofp) != 1)
goto output_err;
for (i = 0; i < hex_to_int(rbuf + 1); i++) {
obuf[0] = hex_to_int(rbuf + 9 + i * 2);
if (fwrite(obuf, 1, 1, ofp) != 1)
goto output_err;
}
break;
case 1:
if (fwrite("\x4e\xfc\x04\xff\xff\xff\xff", 7, 1, ofp) != 1)
goto output_err;
goto end;
default:
return -EINVAL;
}
}
puts("hex file formatting error");
return -EINVAL;
output_err:
puts("error on writing output file");
return -EIO;
end:
return 0;
}
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