nicer help
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+14
-8
@@ -56,21 +56,26 @@ const char *argp_program_bug_address = ""PACKAGE_BUGREPORT"";
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/** the documentation of the program. */
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static const char argpdoc[] =
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"ebusfeed - feed data from an "PACKAGE" dump file to a pseudo serial device.\n\n"
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" Setup: 1. 'socat -d -d pty,raw,echo=0 pty,raw,echo=0'\n"
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" 2. create symbol links to appropriate devices\n"
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" for example: 'ln -s /dev/pts/2 /dev/ttyUSB60'\n"
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" 'ln -s /dev/pts/3 /dev/ttyUSB20'\n"
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" 3. start "PACKAGE": '"PACKAGE" -f -d /dev/ttyUSB20'\n"
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" 4. start ebusfeed: 'ebusfeed /path/to/ebus_dump.bin'\n\n";
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"Feed data from an "PACKAGE" DUMPFILE to a serial device.\n"
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"\v"
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"With no DUMPFILE, /tmp/ebus_dump.bin is used.\n"
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"\n"
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"Example for setting up two pseudo terminals with 'socat':\n"
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" 1. 'socat -d -d pty,raw,echo=0 pty,raw,echo=0'\n"
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" 2. create symbol links to appropriate devices, e.g.\n"
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" 'ln -s /dev/pts/2 /dev/ttyUSB60'\n"
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" 'ln -s /dev/pts/3 /dev/ttyUSB20'\n"
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" 3. start "PACKAGE": '"PACKAGE" -f -d /dev/ttyUSB20'\n"
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" 4. start ebusfeed: 'ebusfeed /path/to/ebus_dump.bin'\n";
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/** the description of the accepted arguments. */
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static char argpargsdoc[] = "[DUMPFILE]";
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/** the definition of the known program arguments. */
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static const struct argp_option argpoptions[] = {
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{"device", 'd', "DEV", 0, "Write to DEV (pseudo serial device) [/dev/ttyUSB60]", 0 },
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{"device", 'd', "DEV", 0, "Write to DEV (serial device) [/dev/ttyUSB60]", 0 },
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{"time", 't', "USEC", 0, "Delay each byte by USEC us [10000]", 0 },
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{NULL, 0, NULL, 0, NULL, 0 },
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};
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@@ -120,6 +125,7 @@ error_t parse_opt(int key, char *arg, struct argp_state *state)
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int main(int argc, char* argv[])
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{
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struct argp argp = { argpoptions, parse_opt, argpargsdoc, argpdoc, NULL, NULL, NULL };
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setenv("ARGP_HELP_FMT", "no-dup-args-note", 0);
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if (argp_parse(&argp, argc, argv, ARGP_IN_ORDER, NULL, &opt) != 0)
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return EINVAL;
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