I'm using PICO2W in IDE arduino with release 5.3.0 I found a strange behaviour with the "attachInterrupt()" function when running on 2 cores programs for pico2. Every thing runs OK when running one 1 ...
An Atmega328 sketch using an added .cpp file with attachInterrupt(....) and detachInterrupt(...) statements compiles successfully in the Arduino IDE 1.8.6 with no ...