6 * asc2log.c - convert ASC logfile to compact CAN frame logfile
8 * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of Volkswagen nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * Alternatively, provided that this notice is retained in full, this
24 * software may be distributed under the terms of the GNU General
25 * Public License ("GPL") version 2, in which case the provisions of the
26 * GPL apply INSTEAD OF those given above.
28 * The provided data structures and external interfaces from this code
29 * are not restricted to be used by modules with a GPL compatible license.
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
36 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
37 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
38 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
39 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
40 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
41 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
44 * Send feedback to <socketcan-users@lists.berlios.de>
51 #define __USE_XOPEN /* supress warning for strptime */
59 #include <linux/can.h>
60 #include <linux/can/error.h>
64 extern int optind, opterr, optopt;
66 void print_usage(char *prg)
68 fprintf(stderr, "Usage: %s\n", prg);
69 fprintf(stderr, "Options: -I <infile> (default stdin)\n");
70 fprintf(stderr, " -O <outfile> (default stdout)\n");
73 void prframe(FILE *file, struct timeval *tv, int dev, struct can_frame *cf) {
75 fprintf(file, "(%ld.%06ld) ", tv->tv_sec, tv->tv_usec);
77 fprintf(file, "can%d ", dev-1);
79 fprintf(file, "canX ");
80 fprint_canframe(file, cf, "\n", 0);
83 void get_can_id(struct can_frame *cf, char *idstring, int base) {
85 if (idstring[strlen(idstring)-1] == 'x') {
86 cf->can_id = CAN_EFF_FLAG;
87 idstring[strlen(idstring)-1] = 0;
91 cf->can_id |= strtoul(idstring, NULL, base);
94 void calc_tv(struct timeval *tv, struct timeval *read_tv,
95 struct timeval *date_tv, char timestamps, int dplace) {
97 if (dplace == 4) /* shift values having only 4 decimal places */
98 read_tv->tv_usec *= 100; /* and need for 6 */
100 if (timestamps == 'a') { /* absolute */
102 tv->tv_sec = date_tv->tv_sec + read_tv->tv_sec;
103 tv->tv_usec = date_tv->tv_usec + read_tv->tv_usec;
105 } else { /* relative */
107 if (((!tv->tv_sec) && (!tv->tv_usec)) &&
108 (date_tv->tv_sec || date_tv->tv_usec)) {
109 tv->tv_sec = date_tv->tv_sec; /* initial date/time */
110 tv->tv_usec = date_tv->tv_usec;
113 tv->tv_sec += read_tv->tv_sec;
114 tv->tv_usec += read_tv->tv_usec;
117 if (tv->tv_usec > 1000000) {
118 tv->tv_usec -= 1000000;
123 int get_date(struct timeval *tv, char *date) {
130 if (sscanf(date, "%9s %d %9s %9s %d", ctmp, &itmp, ctmp, ctmp, &itmp) == 5) {
131 /* assume EN/US date due to existing am/pm field */
133 if (!setlocale(LC_TIME, "en_US"))
136 if (!strptime(date, "%B %d %r %Y", &tms))
140 /* assume DE date due to non existing am/pm field */
142 if (sscanf(date, "%9s %d %9s %d", ctmp, &itmp, ctmp, &itmp) != 4)
145 if (!setlocale(LC_TIME, "de_DE"))
148 if (!strptime(date, "%B %d %T %Y", &tms))
152 //printf("h %d m %d s %d d %d m %d y %d\n",
153 //tms.tm_hour, tms.tm_min, tms.tm_sec,
154 //tms.tm_mday, tms.tm_mon+1, tms.tm_year+1900);
156 tv->tv_sec = mktime(&tms);
164 int main(int argc, char **argv)
166 char buf[100], tmp1[100], tmp2[100];
168 FILE *infile = stdin;
169 FILE *outfile = stdout;
172 static struct timeval tv; /* current frame timestamp */
173 static struct timeval read_tv; /* frame timestamp from ASC file */
174 static struct timeval date_tv; /* date of the ASC file */
175 static int dplace; /* decimal place 4 or 6 or uninitialized */
176 static char base; /* 'd'ec or 'h'ex */
177 static char timestamps; /* 'a'bsolute or 'r'elative */
185 while ((opt = getopt(argc, argv, "I:O:v?")) != -1) {
188 infile = fopen(optarg, "r");
196 outfile = fopen(optarg, "w");
208 print_usage(basename(argv[0]));
213 fprintf(stderr, "Unknown option %c\n", opt);
214 print_usage(basename(argv[0]));
221 while (fgets(buf, 99, infile)) {
223 if (!dplace) { /* the representation of a valid CAN frame not known */
225 /* check for base and timestamp entries in the header */
227 (sscanf(buf, "base %s timestamps %s", tmp1, tmp2) == 2)) {
229 timestamps = tmp2[0];
231 printf("base %c timestamps %c\n", base, timestamps);
232 if ((base != 'h') && (base != 'd')) {
233 printf("invalid base %s (must be 'hex' or 'dez')!\n",
237 if ((timestamps != 'a') && (timestamps != 'r')) {
238 printf("invalid timestamps %s (must be 'absolute'"
239 " or 'relative')!\n", tmp2);
245 /* check for the original logging date in the header */
246 if ((!date_tv.tv_sec) &&
247 (!strncmp(buf, "date", 4))) {
249 if (get_date(&date_tv, &buf[9])) { /* skip 'date day ' */
250 fprintf(stderr, "Not able to determine original log "
251 "file date. Using current time.\n");
252 /* use current date as default */
253 gettimeofday(&date_tv, NULL);
256 printf("date %ld => %s", date_tv.tv_sec, ctime(&date_tv.tv_sec));
260 /* check for decimal places length in valid CAN frames */
261 if (sscanf(buf, "%ld.%s %d ", &tv.tv_sec, tmp2, &i) == 3){
262 dplace = strlen(tmp2);
264 printf("decimal place %d, e.g. '%s'\n", dplace, tmp2);
265 if ((dplace != 4) && (dplace != 6)) {
266 printf("invalid dplace %d (must be 4 or 6)!\n", dplace);
270 continue; /* dplace remains zero until first found CAN frame */
273 /* the representation of a valid CAN frame is known here */
274 /* so try to get CAN frames and ErrorFrames and convert them */
276 /* 0.002367 1 390x Rx d 8 17 00 14 00 C0 00 08 00 */
278 found = 0; /* found valid CAN frame ? */
280 if (base == 'h') { /* check for CAN frames with hexadecimal values */
282 if (sscanf(buf, "%ld.%ld %d %s %*s %c %d %x %x %x %x %x %x %x %x",
283 &read_tv.tv_sec, &read_tv.tv_usec, &interface,
285 &data[0], &data[1], &data[2], &data[3],
286 &data[4], &data[5], &data[6], &data[7]
290 get_can_id(&cf, tmp1, 16);
293 } else { /* check for CAN frames with decimal values */
295 if (sscanf(buf, "%ld.%ld %d %s %*s %c %d %d %d %d %d %d %d %d %d",
296 &read_tv.tv_sec, &read_tv.tv_usec, &interface,
298 &data[0], &data[1], &data[2], &data[3],
299 &data[4], &data[5], &data[6], &data[7]
303 get_can_id(&cf, tmp1, 10);
309 cf.can_id |= CAN_RTR_FLAG;
311 cf.can_dlc = dlc & 0x0FU;
312 for (i=0; i<dlc; i++)
313 cf.data[i] = data[i] & 0xFFU;
315 calc_tv(&tv, &read_tv, &date_tv, timestamps, dplace);
316 prframe(outfile, &tv, interface, &cf);
321 /* check for ErrorFrames */
322 if (sscanf(buf, "%ld.%ld %d %s",
323 &read_tv.tv_sec, &read_tv.tv_usec,
324 &interface, tmp1) == 4) {
326 if (!strncmp(tmp1, "ErrorFrame", strlen("ErrorFrame"))) {
328 memset(&cf, 0, sizeof(cf));
329 /* do not know more than 'Error' */
330 cf.can_id = (CAN_ERR_FLAG | CAN_ERR_BUSERROR);
331 cf.can_dlc = CAN_ERR_DLC;
333 calc_tv(&tv, &read_tv, &date_tv, timestamps, dplace);
334 prframe(outfile, &tv, interface, &cf);