diff --git a/slcan_attach.c b/slcan_attach.c index 7027666..6fa9269 100644 --- a/slcan_attach.c +++ b/slcan_attach.c @@ -57,22 +57,23 @@ void print_usage(char *prg) { + fprintf(stderr, "%s - userspace tool for serial line CAN interface driver SLCAN.\n", prg); fprintf(stderr, "\nUsage: %s [options] tty\n\n", prg); - fprintf(stderr, "Options: -o (send open command 'O\\r')\n"); - fprintf(stderr, " -l (send listen only command 'L\\r', overrides -o)\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, " -s (set CAN speed 0..8)\n"); - fprintf(stderr, " -b (set bit time register value)\n"); - fprintf(stderr, " -d (only detach line discipline)\n"); - fprintf(stderr, " -w (attach - wait for keypess - detach)\n"); - fprintf(stderr, " -n (assign created netdevice name)\n"); + fprintf(stderr, "Options:\n"); + fprintf(stderr, " -o (send open command 'O\\r')\n"); + fprintf(stderr, " -l (send listen only command 'L\\r', overrides -o)\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, " -s (set CAN speed 0..8)\n"); + fprintf(stderr, " -b (set bit time register value)\n"); + fprintf(stderr, " -d (only detach line discipline)\n"); + fprintf(stderr, " -w (attach - wait for keypess - detach)\n"); + fprintf(stderr, " -n (assign created netdevice name)\n"); fprintf(stderr, "\nExamples:\n"); - fprintf(stderr, "slcan_attach -w -o -f -s6 -c /dev/ttyS1\n"); - fprintf(stderr, "slcan_attach /dev/ttyS1\n"); - fprintf(stderr, "slcan_attach -d /dev/ttyS1\n"); - fprintf(stderr, "slcan_attach -w -n can15 /dev/ttyS1\n"); - fprintf(stderr, "\n"); + fprintf(stderr, "slcan_attach -w -o -f -s6 -c /dev/ttyS1\n\n"); + fprintf(stderr, "slcan_attach /dev/ttyS1\n\n"); + fprintf(stderr, "slcan_attach -d /dev/ttyS1\n\n"); + fprintf(stderr, "slcan_attach -w -n can15 /dev/ttyS1\n\n"); exit(1); }