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cansend: add support for Classic CAN raw DLC values 

Update help text only as the new extended frame format is already
implemented in lib.h/lib.c

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
pull/269/head
Oliver Hartkopp 2020-11-22 19:33:16 +01:00
parent 1ba0c576ae
commit a272fd2082
1 changed files with 7 additions and 3 deletions
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10
cansend.c
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@ -61,8 +61,10 @@ void print_usage(char *prg)
fprintf(stderr, "%s - send CAN-frames via CAN_RAW sockets.\n", prg);
fprintf(stderr, "\nUsage: %s <device> <can_frame>.\n", prg);
fprintf(stderr, "\n<can_frame>:\n");
fprintf(stderr, " <can_id>#{data} for 'classic' CAN 2.0 data frames\n");
fprintf(stderr, " <can_id>#R{len} for 'classic' CAN 2.0 data frames\n");
fprintf(stderr, " <can_id>#{data} for Classical CAN 2.0 data frames\n");
fprintf(stderr, " <can_id>#R{len} for Classical CAN 2.0 data frames\n");
fprintf(stderr, " <can_id>#{data}_{dlc} for Classical CAN 2.0 data frames\n");
fprintf(stderr, " <can_id>#R{len}_{dlc} for Classical CAN 2.0 data frames\n");
fprintf(stderr, " <can_id>##<flags>{data} for CAN FD frames\n\n");
fprintf(stderr, "<can_id>:\n"
" 3 (SFF) or 8 (EFF) hex chars\n");
@ -70,11 +72,13 @@ void print_usage(char *prg)
" 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, "<flags>:\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 / 123#R / 00000123#R3\n\n");
" 1F334455#1122334455667788_B / 123#R / 00000123#R3 / 333#R8_E\n\n");
}