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mokele/gist:5391922

Created April 15, 2013 22:45
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gistfile1.c
static ERL_NIF_TERM
gpio_read_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
int pin;
if (!enif_get_int(env, argv[0], &pin))
{
return enif_make_badarg(env);
}
int read = gpio_read(pin);
if(read == -1) {
return error_failed_tuple;
} else {
return enif_make_int(env, read);
}
}
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