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");
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;
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;
case 'f':
send_read_status_flags = 1;
break;
+ case 'l':
+ send_listen = 1;
+ break;
case 's':
speed = optarg;
if (strlen(speed) > 1)
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));
}