Mike R9FT Posted April 20, 2018 Share Posted April 20, 2018 I need to count frequency about 1 Khz on GPIO input pin. Is it possible and what is the best way to do this? Tried WrinigOP isr.c but no luck. Thanks. Link to comment Share on other sites More sharing options...
Larry Bank Posted April 20, 2018 Share Posted April 20, 2018 I added GPIO interrupt callbacks to my ArmbianIO library (https://github.com/bitbank2/ArmbianIO) It should be able to handle that frequency if you make the callback function simple (e.g. increment a counter). Link to comment Share on other sites More sharing options...
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