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cangen: added -b switch enabling bitrate switch in canfd frames. 

Signed-off-by: Sven Schmitt <sven.schmitt@gmx.net>
pull/9/head
Sven Schmitt 2015-10-11 21:08:45 +02:00
parent 04e4457aa9
commit 11ea75367b
1 changed files with 12 additions and 6 deletions
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18
cangen.c
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@ -83,9 +83,11 @@ void print_usage(char *prg)
"- default: %d ms)\n", DEFAULT_GAP); "- default: %d ms)\n", DEFAULT_GAP);
fprintf(stderr, " -e (generate extended frame mode " fprintf(stderr, " -e (generate extended frame mode "
"(EFF) CAN frames)\n"); "(EFF) CAN frames)\n");
fprintf(stderr, " -f [b] (generate CAN FD CAN frames [with bitrate switch])\n"); fprintf(stderr, " -b (generate CAN FD CAN frames"
" with bitrate switch (BRS))\n");
fprintf(stderr, " -f (generate CAN FD CAN frames)\n");
fprintf(stderr, " -R (send RTR frame)\n"); fprintf(stderr, " -R (send RTR frame)\n");
fprintf(stderr, " -m (mix -e -f -R frames)\n"); fprintf(stderr, " -m (mix -e -f -b -R frames)\n");
fprintf(stderr, " -I <mode> (CAN ID" fprintf(stderr, " -I <mode> (CAN ID"
" generation mode - see below)\n"); " generation mode - see below)\n");
fprintf(stderr, " -L <mode> (CAN data length code (dlc)" fprintf(stderr, " -L <mode> (CAN data length code (dlc)"
@ -171,7 +173,7 @@ int main(int argc, char **argv)
signal(SIGHUP, sigterm); signal(SIGHUP, sigterm);
signal(SIGINT, sigterm); signal(SIGINT, sigterm);
while ((opt = getopt(argc, argv, "ig:ef:mI:L:D:xp:n:vRh?")) != -1) { while ((opt = getopt(argc, argv, "ig:ebfmI:L:D:xp:n:vRh?")) != -1) {
switch (opt) { switch (opt) {
case 'i': case 'i':
@ -185,10 +187,12 @@ int main(int argc, char **argv)
case 'e': case 'e':
extended = 1; extended = 1;
break; break;
case 'b':
brs = 1; /* bitrate switch implies CAN FD */
canfd = 1;
break;
case 'f': case 'f':
if (optarg[0] == 'b') /* bitrate switch */
brs = 1;
canfd = 1; canfd = 1;
break; break;
@ -481,7 +485,9 @@ resend:
i = random(); i = random();
extended = i&1; extended = i&1;
canfd = i&2; canfd = i&2;
rtr_frame = ((i&12) == 12); /* reduce RTR frames to 1/4 */ if(canfd)
brs = i&4;
rtr_frame = ((i&24) == 24); /* reduce RTR frames to 1/4 */
} }
} }