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can-utils
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slcand: added listen-only option 

listen-only option (-l) has been added to slcan-attach in oct 2015.
It is now replicated in slcand

Signed-off-by: interlocuteur <gallard@mmic.net>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
pull/23/head
Oliver Hartkopp 2016-05-21 10:31:23 +02:00
parent 2920d41731
commit d82ccd76ac
1 changed files with 10 additions and 2 deletions
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12
slcand.c
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@ -60,6 +60,7 @@ void print_usage(char *prg)
fprintf(stderr, "Options: -o (send open command 'O\\r')\n");
fprintf(stderr, " -c (send close command 'C\\r')\n");
fprintf(stderr, " -f (read status flags with 'F\\r' to reset error states)\n");
fprintf(stderr, " -l (send listen only command 'L\\r', overrides -o)\n");
fprintf(stderr, " -s <speed> (set CAN speed 0..8)\n");
fprintf(stderr, " -S <speed> (set UART speed in baud)\n");
fprintf(stderr, " -t <type> (set UART flow control type 'hw' or 'sw')\n");
@ -171,6 +172,7 @@ int main(int argc, char *argv[])
int opt;
int send_open = 0;
int send_close = 0;
int send_listen = 0;
int send_read_status_flags = 0;
char *speed = NULL;
char *uart_speed_str = NULL;
@ -184,7 +186,7 @@ int main(int argc, char *argv[])
ttypath[0] = '\0';
while ((opt = getopt(argc, argv, "ocfs:S:t:b:?hF")) != -1) {
while ((opt = getopt(argc, argv, "ocfls:S:t:b:?hF")) != -1) {
switch (opt) {
case 'o':
send_open = 1;
@ -195,6 +197,9 @@ int main(int argc, char *argv[])
case 'f':
send_read_status_flags = 1;
break;
case 'l':
send_listen = 1;
break;
case 's':
speed = optarg;
if (strlen(speed) > 1)
@ -325,7 +330,10 @@ int main(int argc, char *argv[])
write(fd, buf, strlen(buf));
}
if (send_open) {
if (send_listen) {
sprintf(buf, "L\r");
write(fd, buf, strlen(buf));
} else if (send_open) {
sprintf(buf, "O\r");
write(fd, buf, strlen(buf));
}