6 * log2asc.c - convert compact CAN frame logfile to ASC logfile
8 * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
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12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
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16 * 2. Redistributions in binary form must reproduce the above copyright
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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.
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44 * Send feedback to <linux-can@vger.kernel.org>
55 #include <linux/can.h>
59 #define BUFSZ 400 /* for one line in the logfile */
61 extern int optind, opterr, optopt;
63 void print_usage(char *prg)
65 fprintf(stderr, "Usage: %s [can-interfaces]\n", prg);
66 fprintf(stderr, "Options: -I <infile> (default stdin)\n");
67 fprintf(stderr, " -O <outfile> (default stdout)\n");
68 fprintf(stderr, " -4 (reduce decimal place to 4 digits)\n");
69 fprintf(stderr, " -n (set newline to cr/lf - default lf)\n");
72 int main(int argc, char **argv)
74 static char buf[BUFSZ], device[BUFSZ], ascframe[BUFSZ], id[10];
77 static struct timeval tv, start_tv;
79 FILE *outfile = stdout;
80 static int maxdev, devno, i, crlf, d4, opt;
82 while ((opt = getopt(argc, argv, "I:O:4n?")) != -1) {
85 infile = fopen(optarg, "r");
93 outfile = fopen(optarg, "w");
109 print_usage(basename(argv[0]));
114 fprintf(stderr, "Unknown option %c\n", opt);
115 print_usage(basename(argv[0]));
121 maxdev = argc - optind; /* find real number of CAN devices */
124 fprintf(stderr, "no CAN interfaces defined!\n");
125 print_usage(basename(argv[0]));
129 //printf("Found %d CAN devices!\n", maxdev);
131 while (fgets(buf, BUFSZ-1, infile)) {
133 if (strlen(buf) >= BUFSZ-2) {
134 fprintf(stderr, "line too long for input buffer\n");
138 /* check for a comment line */
142 if (sscanf(buf, "(%ld.%ld) %s %s", &tv.tv_sec, &tv.tv_usec,
143 device, ascframe) != 4) {
144 fprintf(stderr, "incorrect line format in logfile\n");
148 if (!start_tv.tv_sec) { /* print banner */
150 fprintf(outfile, "date %s", ctime(&start_tv.tv_sec));
151 fprintf(outfile, "base hex timestamps absolute%s",
153 fprintf(outfile, "no internal events logged%s",
157 for (i=0, devno=0; i<maxdev; i++) {
158 if (!strcmp(device, argv[optind+i])) {
159 devno = i+1; /* start with channel '1' */
164 if (devno) { /* only convert for selected CAN devices */
165 if (parse_canframe(ascframe, &cf))
168 tv.tv_sec = tv.tv_sec - start_tv.tv_sec;
169 tv.tv_usec = tv.tv_usec - start_tv.tv_usec;
171 tv.tv_sec--, tv.tv_usec += 1000000;
173 tv.tv_sec = tv.tv_usec = 0;
176 fprintf(outfile, "%4ld.%04ld ", tv.tv_sec, tv.tv_usec/100);
178 fprintf(outfile, "%4ld.%06ld ", tv.tv_sec, tv.tv_usec);
180 fprintf(outfile, "%-2d ", devno); /* channel number left aligned */
182 if (cf.can_id & CAN_ERR_FLAG)
183 fprintf(outfile, "ErrorFrame");
185 sprintf(id, "%X%c", cf.can_id & CAN_EFF_MASK,
186 (cf.can_id & CAN_EFF_FLAG)?'x':' ');
187 fprintf(outfile, "%-15s Rx ", id);
189 if (cf.can_id & CAN_RTR_FLAG)
190 fprintf(outfile, "r"); /* RTR frame */
192 fprintf(outfile, "d %d", cf.can_dlc); /* data frame */
194 for (i = 0; i < cf.can_dlc; i++) {
195 fprintf(outfile, " %02X", cf.data[i]);
200 fprintf(outfile, "\r");
201 fprintf(outfile, "\n");