mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-11-19 18:40:17 +00:00
100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
/*
|
|
NanoStack: MCU software and PC tools for IP-based wireless sensor networking.
|
|
|
|
Copyright (C) 2006-2007 Sensinode Ltd.
|
|
|
|
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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
Address:
|
|
Sensinode Ltd.
|
|
Teknologiantie 6
|
|
90570 Oulu, Finland
|
|
|
|
E-mail:
|
|
info@sensinode.com
|
|
*/
|
|
|
|
|
|
#include <unistd.h>
|
|
#include <strings.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <inttypes.h>
|
|
|
|
int hexfile_parse(char *line, unsigned int *type, unsigned int *addr, unsigned char *buffer)
|
|
{
|
|
unsigned int row_len = 0;
|
|
unsigned int row_index = 7;
|
|
unsigned int i;
|
|
int tmp;
|
|
|
|
uint8_t cksum = 0;
|
|
int retval = 0;
|
|
|
|
retval = sscanf(line, ":%2x%4x%2x", &row_len, addr, type);
|
|
|
|
cksum += row_len;
|
|
cksum += *addr >> 8;
|
|
cksum += *addr & 0xFF;
|
|
cksum += *type;
|
|
|
|
i = 0;
|
|
if (retval == 3)
|
|
{
|
|
while(i < row_len)
|
|
{
|
|
|
|
if (sscanf(&line[row_index], "%2x", &tmp) == 1)
|
|
{
|
|
cksum += tmp;
|
|
buffer[i++] = (unsigned char) tmp;
|
|
row_index += 2;
|
|
}
|
|
else return -1;
|
|
}
|
|
if (sscanf(&line[row_index], "%2x", &tmp) == 1)
|
|
{
|
|
if ((cksum + (uint8_t) tmp) == 0) return row_len;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int hexfile_out(char *line, unsigned int type, unsigned int address, unsigned char *data, unsigned int bytes)
|
|
{
|
|
uint8_t cksum = 0;
|
|
uint8_t i = 0;
|
|
char tmp[8];
|
|
|
|
sprintf(line, ":%2.2X%4.4X%2.2X", bytes, address, type);
|
|
cksum -= bytes;
|
|
cksum -= address >> 8;
|
|
cksum -= address & 0xFF;
|
|
cksum -= type;
|
|
|
|
for (i=0; i<bytes; i++)
|
|
{
|
|
sprintf(tmp, "%2.2X", data[i]);
|
|
strcat(line, tmp);
|
|
cksum -= data[i];
|
|
}
|
|
sprintf(tmp, "%2.2X\r\n", cksum);
|
|
strcat(line, tmp);
|
|
|
|
return strlen(line);
|
|
}
|
|
|