General Purpose Input/Output (GPIO)

@inproceedings{Wootton2016GeneralPI,
  title={General Purpose Input/Output (GPIO)},
  author={Cliff Wootton},
  year={2016}
}
The General Purpose Input/Output (GPIO) interfaces supported by the ARTIK modules have evolved out of a simple need to sense an input pin value or set an output pin value from within your application. This is expanded to include a variety of peripheral bus systems for controlling external devices and much more sophisticated ways to manage input and output. The term GPIO has itself evolved to mean much more than it used to. Hardware engineers use the term to describe a simple 1-bit input/output… 
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