This is not an appropriate time to be doing pinMode or digitalWrite because init() has not been called yet. Who knows what init will do with pins? It might set them all to inputs, for example.

pinMode() has no effect on pins 9, 11 or A4. Other pins work as expected. Replacing digitalWrite() with equivalent GPIO register accesses does not work; issue is likely in pinMode(). Replacing pinMode ...

We all are familiar with the word ‘Automation’, where the human interaction is minimal and things can be controlled automatically or remotely. Home automation is very popular and demanding concept in ...