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blink-io: make sure maa_gpio_init was successful

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Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
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Brendan Le Foll
2014-05-15 10:41:23 +01:00
parent acfc804f26
commit 8460b1f743
1 changed files with 4 additions and 0 deletions
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4
examples/blink-io.c
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@@ -62,6 +62,10 @@ main(int argc, char **argv)
maa_gpio_context* gpio; maa_gpio_context* gpio;
gpio = maa_gpio_init(iopin); gpio = maa_gpio_init(iopin);
if (gpio == NULL) {
fprintf(stderr, "Are you sure that pin%d you requested is valid on your platform?", iopin);
exit(1);
}
printf("Initialised pin%d which is atually pin%d\n", iopin, gpio->pin); printf("Initialised pin%d which is atually pin%d\n", iopin, gpio->pin);
// set direction to OUT // set direction to OUT