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cangen: improve help text to point out decimal places for the gap value 

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
pull/319/head
Oliver Hartkopp 2021-10-20 06:12:27 +02:00
parent 622fcbb9b3
commit 0edab8a402
1 changed files with 3 additions and 0 deletions
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cangen.c
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@ -121,6 +121,7 @@ void print_usage(char *prg)
fprintf(stderr, " 'o' => random values, odd ID\n"); fprintf(stderr, " 'o' => random values, odd ID\n");
fprintf(stderr, " 'i' => increment values\n"); fprintf(stderr, " 'i' => increment values\n");
fprintf(stderr, " <value> => fixed value (in hexadecimal for -I and -D)\n\n"); fprintf(stderr, " <value> => fixed value (in hexadecimal for -I and -D)\n\n");
fprintf(stderr, "The gap value (in milliseconds) may have decimal places, e.g. '-g 4.73'\n");
fprintf(stderr, "When incrementing the CAN data the data length code " fprintf(stderr, "When incrementing the CAN data the data length code "
"minimum is set to 1.\n"); "minimum is set to 1.\n");
fprintf(stderr, "CAN IDs and data content are given and expected in hexadecimal values.\n\n"); fprintf(stderr, "CAN IDs and data content are given and expected in hexadecimal values.\n\n");
@ -131,6 +132,8 @@ void print_usage(char *prg)
fprintf(stderr, "\t(generate EFF frames, incr. length)\n"); fprintf(stderr, "\t(generate EFF frames, incr. length)\n");
fprintf(stderr, "%s vcan0 -D 11223344DEADBEEF -L 8\n", prg); fprintf(stderr, "%s vcan0 -D 11223344DEADBEEF -L 8\n", prg);
fprintf(stderr, "\t(fixed CAN data payload and length)\n"); fprintf(stderr, "\t(fixed CAN data payload and length)\n");
fprintf(stderr, "%s vcan0 -I 555 -D CCCCCCCCCCCCCCCC -L 8 -g 3.75\n", prg);
fprintf(stderr, "\t(generate a fix busload without bit-stuffing effects)\n");
fprintf(stderr, "%s vcan0 -g 0 -i -x\n", prg); fprintf(stderr, "%s vcan0 -g 0 -i -x\n", prg);
fprintf(stderr, "\t(full load test ignoring -ENOBUFS)\n"); fprintf(stderr, "\t(full load test ignoring -ENOBUFS)\n");
fprintf(stderr, "%s vcan0 -g 0 -p 10 -x\n", prg); fprintf(stderr, "%s vcan0 -g 0 -p 10 -x\n", prg);