Why is the digital I/O in Arduino slow and what can be done about it?

Jan Dolinay

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16 May 2014CPOL25 min read

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This article explains why the Arduino digital I/O functions are slow and compares them with faster implementation used in Wiring framework.

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By

Jan Dolinay

Employed (other) Tomas Bata University in Zlin

Czech Republic

Works at Tomas Bata University in Zlin, Czech Republic. Teaches embedded systems programming. Interested in programming in general and especially in programming microcontrollers.

Why is the digital I/O in Arduino slow and what can be done about it?

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