GitHub - enternoescape/Arduino-FreqPeriod-Due: Frequency period measurement library based loosely on the one for AVR based Arduinos.

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Frequency period measurement library based loosely on the one for AVR based Arduinos.

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Examples/FreqPeriod		Examples/FreqPeriod
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FreqPeriodDue.cpp		FreqPeriodDue.cpp
FreqPeriodDue.h		FreqPeriodDue.h
keywords.txt		keywords.txt
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FreqPeriod library for Arduino Due.

I use this primarily to measure IR carrier frequency. As far as I can tell it's accurate enough.

The only real concern I have right now is having to use attachInterrupt. I know I could create an interrupt for whatever PIO I choose (and it would make things even more accurate), but then if you wanted to use that PIO for another library you'd instantly have a conflict. Suggestions are more than welcome to improve the library.

It is based loosely on the FreqPeriod library from:
FreqPeriod Library for Frequency Measurement.
Created by Martin Nawrath, KHM Lab3, June. 2010
http://interface.khm.de/index.php/lab/experiments/frequency-measurement-library/