I'm facing a problem with a Udoo board, which has an embedded Arduino Due. I'm using SPI to get data from 16 push buttons with two shift registers. The code I'm working with works perfectly with an Arduino Uno. Here it is #include <SPI.h> const byte buttonLatch = 9; const byte numOfButChips = 2; /…

[solved, kind of...]: SPI issue with shift registers on a Udoo board

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