Abstract
As pretty as the Larson (Memorial) Scanner is, it’s also a good demonstration of the Raspberry Pi’s GPIO controls using WiringPi. In this chapter, we’ll modify the circuit (slightly) and the program (a bit more) so that we can read data in as well. We’ll do it two ways, since it’s not a very big topic by itself: polled and interrupt driven. Once again, WiringPi makes this easy.
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© 2018 James R. Strickland
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Strickland, J.R. (2018). Input and Output. In: Raspberry Pi for Arduino Users. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-3414-3_6
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DOI: https://doi.org/10.1007/978-1-4842-3414-3_6
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Publisher Name: Apress, Berkeley, CA
Print ISBN: 978-1-4842-3413-6
Online ISBN: 978-1-4842-3414-3
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