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apps/examples/gpio: Bug fixes from testing

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This commit is contained in:
Gregory Nutt 2016-08-01 15:27:48 -06:00
parent acbbd690f9
commit fce37aeafa
1 changed files with 5 additions and 6 deletions
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11
examples/gpio/gpio_main.c
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@ -56,8 +56,8 @@
static void show_usage(FAR const char *progname)
{
fprintf(stderr, "USAGE: %s [-w <signo>] [-o <value>] <driver-path>\n");
fprintf(stderr, " %s -h\n");
fprintf(stderr, "USAGE: %s [-w <signo>] [-o <value>] <driver-path>\n", progname);
fprintf(stderr, " %s -h\n", progname);
fprintf(stderr, "Where:\n");
fprintf(stderr, "\t<driver-path>: The full path to the GPIO pin driver.\n");
fprintf(stderr, "\t-w <signo>: Wait for an signal if this is an interrupt pin.\n");
@ -127,7 +127,7 @@ int gpio_main(int argc, char *argv[])
}
}
if (ndx < argc && strcmp(argv[ndx], "-o"))
if (ndx < argc && strcmp(argv[ndx], "-o") == 0)
{
if (++ndx >= argc)
{
@ -136,12 +136,12 @@ int gpio_main(int argc, char *argv[])
return EXIT_FAILURE;
}
if (strcmp(argv[ndx], "0"))
if (strcmp(argv[ndx], "0") == 0)
{
outvalue = false;
haveout = true;
}
else if (strcmp(argv[ndx], "1"))
else if (strcmp(argv[ndx], "1") == 0)
{
outvalue = true;
haveout = true;
@ -159,7 +159,6 @@ int gpio_main(int argc, char *argv[])
show_usage(argv[0]);
return EXIT_FAILURE;
}
}
devpath = argv[ndx];