gpio.c: mraa_gpio_get_* now return -1 in error cases

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
2015-04-24 16:07:17 +01:00
parent 0b382100d2
commit 2679a916be
3 changed files with 5 additions and 3 deletions
--- a/api/mraa/gpio.hpp
+++ b/api/mraa/gpio.hpp
@@ -292,7 +292,7 @@ class Gpio
    }
    /**
     * Get pin number of Gpio. If raw param is True will return the
-     * number as used within sysfs
+     * number as used within sysfs. Invalid will return -1.
     *
     * @param raw (optional) get the raw gpio number.
     * @return Pin number