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 <linux-can@vger.kernel.org>
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);
78 fprintf(file, "can%d ", dev-1);
80 fprintf(file, "canX ");
82 /* no CAN FD support so far */
83 fprint_canframe(file, (struct canfd_frame *)cf, "\n", 0, CAN_MAX_DLEN);
86 void get_can_id(struct can_frame *cf, char *idstring, int base) {
88 if (idstring[strlen(idstring)-1] == 'x') {
89 cf->can_id = CAN_EFF_FLAG;
90 idstring[strlen(idstring)-1] = 0;
94 cf->can_id |= strtoul(idstring, NULL, base);
97 void calc_tv(struct timeval *tv, struct timeval *read_tv,
98 struct timeval *date_tv, char timestamps, int dplace) {
100 if (dplace == 4) /* shift values having only 4 decimal places */
101 read_tv->tv_usec *= 100; /* and need for 6 */
103 if (dplace == 5) /* shift values having only 5 decimal places */
104 read_tv->tv_usec *= 10; /* and need for 6 */
106 if (timestamps == 'a') { /* absolute */
108 tv->tv_sec = date_tv->tv_sec + read_tv->tv_sec;
109 tv->tv_usec = date_tv->tv_usec + read_tv->tv_usec;
111 } else { /* relative */
113 if (((!tv->tv_sec) && (!tv->tv_usec)) &&
114 (date_tv->tv_sec || date_tv->tv_usec)) {
115 tv->tv_sec = date_tv->tv_sec; /* initial date/time */
116 tv->tv_usec = date_tv->tv_usec;
119 tv->tv_sec += read_tv->tv_sec;
120 tv->tv_usec += read_tv->tv_usec;
123 if (tv->tv_usec > 1000000) {
124 tv->tv_usec -= 1000000;
129 int get_date(struct timeval *tv, char *date) {
136 if (sscanf(date, "%9s %d %9s %9s %d", ctmp, &itmp, ctmp, ctmp, &itmp) == 5) {
137 /* assume EN/US date due to existing am/pm field */
139 if (!setlocale(LC_TIME, "en_US"))
142 if (!strptime(date, "%B %d %r %Y", &tms))
146 /* assume DE date due to non existing am/pm field */
148 if (sscanf(date, "%9s %d %9s %d", ctmp, &itmp, ctmp, &itmp) != 4)
151 if (!setlocale(LC_TIME, "de_DE"))
154 if (!strptime(date, "%B %d %T %Y", &tms))
158 //printf("h %d m %d s %d d %d m %d y %d\n",
159 //tms.tm_hour, tms.tm_min, tms.tm_sec,
160 //tms.tm_mday, tms.tm_mon+1, tms.tm_year+1900);
162 tv->tv_sec = mktime(&tms);
170 int main(int argc, char **argv)
172 char buf[100], tmp1[100], tmp2[100];
174 FILE *infile = stdin;
175 FILE *outfile = stdout;
178 static struct timeval tv; /* current frame timestamp */
179 static struct timeval read_tv; /* frame timestamp from ASC file */
180 static struct timeval date_tv; /* date of the ASC file */
181 static int dplace; /* decimal place 4, 5 or 6 or uninitialized */
182 static char base; /* 'd'ec or 'h'ex */
183 static char timestamps; /* 'a'bsolute or 'r'elative */
191 while ((opt = getopt(argc, argv, "I:O:v?")) != -1) {
194 infile = fopen(optarg, "r");
202 outfile = fopen(optarg, "w");
214 print_usage(basename(argv[0]));
219 fprintf(stderr, "Unknown option %c\n", opt);
220 print_usage(basename(argv[0]));
227 while (fgets(buf, 99, infile)) {
229 if (!dplace) { /* the representation of a valid CAN frame not known */
231 /* check for base and timestamp entries in the header */
233 (sscanf(buf, "base %s timestamps %s", tmp1, tmp2) == 2)) {
235 timestamps = tmp2[0];
237 printf("base %c timestamps %c\n", base, timestamps);
238 if ((base != 'h') && (base != 'd')) {
239 printf("invalid base %s (must be 'hex' or 'dez')!\n",
243 if ((timestamps != 'a') && (timestamps != 'r')) {
244 printf("invalid timestamps %s (must be 'absolute'"
245 " or 'relative')!\n", tmp2);
251 /* check for the original logging date in the header */
252 if ((!date_tv.tv_sec) &&
253 (!strncmp(buf, "date", 4))) {
255 if (get_date(&date_tv, &buf[9])) { /* skip 'date day ' */
256 fprintf(stderr, "Not able to determine original log "
257 "file date. Using current time.\n");
258 /* use current date as default */
259 gettimeofday(&date_tv, NULL);
262 printf("date %ld => %s", date_tv.tv_sec, ctime(&date_tv.tv_sec));
266 /* check for decimal places length in valid CAN frames */
267 if (sscanf(buf, "%ld.%s %d ", &tv.tv_sec, tmp2, &i) == 3){
268 dplace = strlen(tmp2);
270 printf("decimal place %d, e.g. '%s'\n", dplace, tmp2);
271 if (dplace < 4 || dplace > 6) {
272 printf("invalid dplace %d (must be 4, 5 or 6)!\n", dplace);
276 continue; /* dplace remains zero until first found CAN frame */
279 /* the representation of a valid CAN frame is known here */
280 /* so try to get CAN frames and ErrorFrames and convert them */
282 /* 0.002367 1 390x Rx d 8 17 00 14 00 C0 00 08 00 */
284 found = 0; /* found valid CAN frame ? */
286 if (base == 'h') { /* check for CAN frames with hexadecimal values */
288 if (sscanf(buf, "%ld.%ld %d %s %*s %c %d %x %x %x %x %x %x %x %x",
289 &read_tv.tv_sec, &read_tv.tv_usec, &interface,
291 &data[0], &data[1], &data[2], &data[3],
292 &data[4], &data[5], &data[6], &data[7]
296 get_can_id(&cf, tmp1, 16);
299 } else { /* check for CAN frames with decimal values */
301 if (sscanf(buf, "%ld.%ld %d %s %*s %c %d %d %d %d %d %d %d %d %d",
302 &read_tv.tv_sec, &read_tv.tv_usec, &interface,
304 &data[0], &data[1], &data[2], &data[3],
305 &data[4], &data[5], &data[6], &data[7]
309 get_can_id(&cf, tmp1, 10);
315 cf.can_id |= CAN_RTR_FLAG;
317 cf.can_dlc = dlc & 0x0FU;
318 for (i=0; i<dlc; i++)
319 cf.data[i] = data[i] & 0xFFU;
321 calc_tv(&tv, &read_tv, &date_tv, timestamps, dplace);
322 prframe(outfile, &tv, interface, &cf);
327 /* check for ErrorFrames */
328 if (sscanf(buf, "%ld.%ld %d %s",
329 &read_tv.tv_sec, &read_tv.tv_usec,
330 &interface, tmp1) == 4) {
332 if (!strncmp(tmp1, "ErrorFrame", strlen("ErrorFrame"))) {
334 memset(&cf, 0, sizeof(cf));
335 /* do not know more than 'Error' */
336 cf.can_id = (CAN_ERR_FLAG | CAN_ERR_BUSERROR);
337 cf.can_dlc = CAN_ERR_DLC;
339 calc_tv(&tv, &read_tv, &date_tv, timestamps, dplace);
340 prframe(outfile, &tv, interface, &cf);