diff --git a/cansend.c b/cansend.c index 51d9689..c2eb30c 100644 --- a/cansend.c +++ b/cansend.c @@ -58,27 +58,33 @@ static void print_usage(char *prg) { - fprintf(stderr, "%s - send CAN-frames via CAN_RAW sockets.\n", prg); - fprintf(stderr, "\nUsage: %s .\n", prg); - fprintf(stderr, "\n:\n"); - fprintf(stderr, " #{data} for Classical CAN 2.0 data frames\n"); - fprintf(stderr, " #R{len} for Classical CAN 2.0 data frames\n"); - fprintf(stderr, " #{data}_{dlc} for Classical CAN 2.0 data frames\n"); - fprintf(stderr, " #R{len}_{dlc} for Classical CAN 2.0 data frames\n"); - fprintf(stderr, " ##{data} for CAN FD frames\n\n"); - fprintf(stderr, ":\n" - " 3 (SFF) or 8 (EFF) hex chars\n"); - fprintf(stderr, "{data}:\n" - " 0..8 (0..64 CAN FD) ASCII hex-values (optionally separated by '.')\n"); - fprintf(stderr, "{len}:\n" - " an optional 0..8 value as RTR frames can contain a valid dlc field\n"); - fprintf(stderr, "_{dlc}:\n" - " an optional 9..F data length code value when payload length is 8\n"); - fprintf(stderr, ":\n" - " a single ASCII Hex value (0 .. F) which defines canfd_frame.flags\n\n"); - fprintf(stderr, "Examples:\n"); - fprintf(stderr, " 5A1#11.2233.44556677.88 / 123#DEADBEEF / 5AA# / 123##1 / 213##311223344 /\n" - " 1F334455#1122334455667788_B / 123#R / 00000123#R3 / 333#R8_E\n\n"); + fprintf(stderr, + "%s - send CAN-frames via CAN_RAW sockets.\n" + "\n" + "Usage: %s .\n" + "\n" + ":\n" + " #{data} for Classical CAN 2.0 data frames\n" + " #R{len} for Classical CAN 2.0 data frames\n" + " #{data}_{dlc} for Classical CAN 2.0 data frames\n" + " #R{len}_{dlc} for Classical CAN 2.0 data frames\n" + " ##{data} for CAN FD frames\n\n" + ":\n" + " 3 (SFF) or 8 (EFF) hex chars\n" + "{data}:\n" + " 0..8 (0..64 CAN FD) ASCII hex-values (optionally separated by '.')\n" + "{len}:\n" + " an optional 0..8 value as RTR frames can contain a valid dlc field\n" + "_{dlc}:\n" + " an optional 9..F data length code value when payload length is 8\n" + ":\n" + " a single ASCII Hex value (0 .. F) which defines canfd_frame.flags\n" + "\n" + "Examples:\n" + " 5A1#11.2233.44556677.88 / 123#DEADBEEF / 5AA# / 123##1 / 213##311223344 /\n" + " 1F334455#1122334455667788_B / 123#R / 00000123#R3 / 333#R8_E\n" + "\n", + prg, prg); } int main(int argc, char **argv)