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gpio: add more error checking for mraa_gpio_context

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Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Brendan Le Foll
2014-10-03 12:00:11 +01:00
parent c5c5c9b700
commit 6d5a3d796c
2 changed files with 10 additions and 4 deletions
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3
api/mraa/gpio.h
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@@ -157,7 +157,8 @@ mraa_result_t mraa_gpio_dir(mraa_gpio_context dev, gpio_dir_t dir);
mraa_result_t mraa_gpio_close(mraa_gpio_context dev);
/**
* Read the Gpio value.
* Read the Gpio value. This can be 0 or 1. A resonse of -1 means that there
* was a fatal error.
*
* @param dev The Gpio context
* @return Result of operation