Relief is here from long compile times when developing firmware for your Arduino project. [Paul] was puzzled by the fact that every file used in a sketch is fully recompiled every time you hit ...

The compiler isn’t doing anything strange or unique at all. It’s compiling all of the functions in the Arduino core files, and putting the resulting functions into a big (static) library file.

Several GitHub Actions actions are available for use with Arduino projects. One of these is arduino/compile-sketches.

I have been delving (groping blindfold, more accurately) into the Arduino compiler adaptation code to try to determine how it handles the switch-over between its pwm activities, its set-I/O-to-output ...