2 * asc2log.c - convert ASC logfile to compact CAN frame logfile
4 * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of Volkswagen nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * Alternatively, provided that this notice is retained in full, this
20 * software may be distributed under the terms of the GNU General
21 * Public License ("GPL") version 2, in which case the provisions of the
22 * GPL apply INSTEAD OF those given above.
24 * The provided data structures and external interfaces from this code
25 * are not restricted to be used by modules with a GPL compatible license.
27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
32 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
33 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
34 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
35 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
36 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
37 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
40 * Send feedback to <linux-can@vger.kernel.org>
47 #define __USE_XOPEN /* supress warning for strptime */
55 #include <linux/can.h>
56 #include <linux/can/error.h>
60 extern int optind, opterr, optopt;
62 void print_usage(char *prg)
64 fprintf(stderr, "Usage: %s\n", prg);
65 fprintf(stderr, "Options: -I <infile> (default stdin)\n");
66 fprintf(stderr, " -O <outfile> (default stdout)\n");
69 void prframe(FILE *file, struct timeval *tv, int dev, struct can_frame *cf) {
71 fprintf(file, "(%ld.%06ld) ", tv->tv_sec, tv->tv_usec);
74 fprintf(file, "can%d ", dev-1);
76 fprintf(file, "canX ");
78 /* no CAN FD support so far */
79 fprint_canframe(file, (struct canfd_frame *)cf, "\n", 0, CAN_MAX_DLEN);
82 void get_can_id(struct can_frame *cf, char *idstring, int base) {
84 if (idstring[strlen(idstring)-1] == 'x') {
85 cf->can_id = CAN_EFF_FLAG;
86 idstring[strlen(idstring)-1] = 0;
90 cf->can_id |= strtoul(idstring, NULL, base);
93 void calc_tv(struct timeval *tv, struct timeval *read_tv,
94 struct timeval *date_tv, char timestamps, int dplace) {
96 if (dplace == 4) /* shift values having only 4 decimal places */
97 read_tv->tv_usec *= 100; /* and need for 6 */
99 if (dplace == 5) /* shift values having only 5 decimal places */
100 read_tv->tv_usec *= 10; /* and need for 6 */
102 if (timestamps == 'a') { /* absolute */
104 tv->tv_sec = date_tv->tv_sec + read_tv->tv_sec;
105 tv->tv_usec = date_tv->tv_usec + read_tv->tv_usec;
107 } else { /* relative */
109 if (((!tv->tv_sec) && (!tv->tv_usec)) &&
110 (date_tv->tv_sec || date_tv->tv_usec)) {
111 tv->tv_sec = date_tv->tv_sec; /* initial date/time */
112 tv->tv_usec = date_tv->tv_usec;
115 tv->tv_sec += read_tv->tv_sec;
116 tv->tv_usec += read_tv->tv_usec;
119 if (tv->tv_usec > 1000000) {
120 tv->tv_usec -= 1000000;
125 int get_date(struct timeval *tv, char *date) {
132 if (sscanf(date, "%9s %d %9s %9s %d", ctmp, &itmp, ctmp, ctmp, &itmp) == 5) {
133 /* assume EN/US date due to existing am/pm field */
135 if (!setlocale(LC_TIME, "en_US"))
138 if (!strptime(date, "%B %d %r %Y", &tms))
142 /* assume DE date due to non existing am/pm field */
144 if (sscanf(date, "%9s %d %9s %d", ctmp, &itmp, ctmp, &itmp) != 4)
147 if (!setlocale(LC_TIME, "de_DE"))
150 if (!strptime(date, "%B %d %T %Y", &tms))
154 //printf("h %d m %d s %d d %d m %d y %d\n",
155 //tms.tm_hour, tms.tm_min, tms.tm_sec,
156 //tms.tm_mday, tms.tm_mon+1, tms.tm_year+1900);
158 tv->tv_sec = mktime(&tms);
166 int main(int argc, char **argv)
168 char buf[100], tmp1[100], tmp2[100];
170 FILE *infile = stdin;
171 FILE *outfile = stdout;
174 static struct timeval tv; /* current frame timestamp */
175 static struct timeval read_tv; /* frame timestamp from ASC file */
176 static struct timeval date_tv; /* date of the ASC file */
177 static int dplace; /* decimal place 4, 5 or 6 or uninitialized */
178 static char base; /* 'd'ec or 'h'ex */
179 static char timestamps; /* 'a'bsolute or 'r'elative */
187 while ((opt = getopt(argc, argv, "I:O:v?")) != -1) {
190 infile = fopen(optarg, "r");
198 outfile = fopen(optarg, "w");
210 print_usage(basename(argv[0]));
215 fprintf(stderr, "Unknown option %c\n", opt);
216 print_usage(basename(argv[0]));
223 while (fgets(buf, 99, infile)) {
225 if (!dplace) { /* the representation of a valid CAN frame not known */
227 /* check for base and timestamp entries in the header */
229 (sscanf(buf, "base %s timestamps %s", tmp1, tmp2) == 2)) {
231 timestamps = tmp2[0];
233 printf("base %c timestamps %c\n", base, timestamps);
234 if ((base != 'h') && (base != 'd')) {
235 printf("invalid base %s (must be 'hex' or 'dez')!\n",
239 if ((timestamps != 'a') && (timestamps != 'r')) {
240 printf("invalid timestamps %s (must be 'absolute'"
241 " or 'relative')!\n", tmp2);
247 /* check for the original logging date in the header */
248 if ((!date_tv.tv_sec) &&
249 (!strncmp(buf, "date", 4))) {
251 if (get_date(&date_tv, &buf[9])) { /* skip 'date day ' */
252 fprintf(stderr, "Not able to determine original log "
253 "file date. Using current time.\n");
254 /* use current date as default */
255 gettimeofday(&date_tv, NULL);
258 printf("date %ld => %s", date_tv.tv_sec, ctime(&date_tv.tv_sec));
262 /* check for decimal places length in valid CAN frames */
263 if (sscanf(buf, "%ld.%s %d ", &tv.tv_sec, tmp2, &i) == 3){
264 dplace = strlen(tmp2);
266 printf("decimal place %d, e.g. '%s'\n", dplace, tmp2);
267 if (dplace < 4 || dplace > 6) {
268 printf("invalid dplace %d (must be 4, 5 or 6)!\n", dplace);
272 continue; /* dplace remains zero until first found CAN frame */
275 /* the representation of a valid CAN frame is known here */
276 /* so try to get CAN frames and ErrorFrames and convert them */
278 /* 0.002367 1 390x Rx d 8 17 00 14 00 C0 00 08 00 */
280 found = 0; /* found valid CAN frame ? */
282 if (base == 'h') { /* check for CAN frames with hexadecimal values */
284 if (sscanf(buf, "%ld.%ld %d %s %*s %c %d %x %x %x %x %x %x %x %x",
285 &read_tv.tv_sec, &read_tv.tv_usec, &interface,
287 &data[0], &data[1], &data[2], &data[3],
288 &data[4], &data[5], &data[6], &data[7]
292 get_can_id(&cf, tmp1, 16);
295 } else { /* check for CAN frames with decimal values */
297 if (sscanf(buf, "%ld.%ld %d %s %*s %c %d %d %d %d %d %d %d %d %d",
298 &read_tv.tv_sec, &read_tv.tv_usec, &interface,
300 &data[0], &data[1], &data[2], &data[3],
301 &data[4], &data[5], &data[6], &data[7]
305 get_can_id(&cf, tmp1, 10);
311 cf.can_id |= CAN_RTR_FLAG;
313 cf.can_dlc = dlc & 0x0FU;
314 for (i=0; i<dlc; i++)
315 cf.data[i] = data[i] & 0xFFU;
317 calc_tv(&tv, &read_tv, &date_tv, timestamps, dplace);
318 prframe(outfile, &tv, interface, &cf);
323 /* check for ErrorFrames */
324 if (sscanf(buf, "%ld.%ld %d %s",
325 &read_tv.tv_sec, &read_tv.tv_usec,
326 &interface, tmp1) == 4) {
328 if (!strncmp(tmp1, "ErrorFrame", strlen("ErrorFrame"))) {
330 memset(&cf, 0, sizeof(cf));
331 /* do not know more than 'Error' */
332 cf.can_id = (CAN_ERR_FLAG | CAN_ERR_BUSERROR);
333 cf.can_dlc = CAN_ERR_DLC;
335 calc_tv(&tv, &read_tv, &date_tv, timestamps, dplace);
336 prframe(outfile, &tv, interface, &cf);