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cangen: Added '-n <count>' commandline option analogue to candump tool. 

Inspired by Uwe Bonnes.
pull/7/head
Oliver Hartkopp 2010-11-29 18:58:12 +00:00
parent 33ff70f940
commit 5d1dbedd19
1 changed files with 15 additions and 1 deletions
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16
cangen.c
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@ -95,6 +95,8 @@ void print_usage(char *prg)
" generation mode - see below)\n"); " generation mode - see below)\n");
fprintf(stderr, " -p <timeout> (poll on -ENOBUFS to write frames" fprintf(stderr, " -p <timeout> (poll on -ENOBUFS to write frames"
" with <timeout> ms)\n"); " with <timeout> ms)\n");
fprintf(stderr, " -n <count> (terminate after <count> CAN frames "
"- default infinite)\n");
fprintf(stderr, " -i (ignore -ENOBUFS return values on" fprintf(stderr, " -i (ignore -ENOBUFS return values on"
" write() syscalls)\n"); " write() syscalls)\n");
fprintf(stderr, " -x (disable local loopback of " fprintf(stderr, " -x (disable local loopback of "
@ -139,6 +141,7 @@ int main(int argc, char **argv)
unsigned char dlc_mode = MODE_RANDOM; unsigned char dlc_mode = MODE_RANDOM;
unsigned char loopback_disable = 0; unsigned char loopback_disable = 0;
unsigned char verbose = 0; unsigned char verbose = 0;
int count = 0;
uint64_t incdata = 0; uint64_t incdata = 0;
int opt; int opt;
@ -157,7 +160,7 @@ int main(int argc, char **argv)
signal(SIGHUP, sigterm); signal(SIGHUP, sigterm);
signal(SIGINT, sigterm); signal(SIGINT, sigterm);
while ((opt = getopt(argc, argv, "ig:eI:L:D:xp:vh?")) != -1) { while ((opt = getopt(argc, argv, "ig:eI:L:D:xp:n:vh?")) != -1) {
switch (opt) { switch (opt) {
case 'i': case 'i':
@ -220,6 +223,14 @@ int main(int argc, char **argv)
polltimeout = strtoul(optarg, NULL, 10); polltimeout = strtoul(optarg, NULL, 10);
break; break;
case 'n':
count = atoi(optarg);
if (count < 1) {
print_usage(basename(argv[0]));
return 1;
}
break;
case '?': case '?':
case 'h': case 'h':
default: default:
@ -302,6 +313,9 @@ int main(int argc, char **argv)
while (running) { while (running) {
if (count && (--count == 0))
running = 0;
if (id_mode == MODE_RANDOM) { if (id_mode == MODE_RANDOM) {
frame.can_id = random(); frame.can_id = random();