Just trying to get an expert view on this code

Hi, This is my first time I am asking a question on this forum. Thanks to everyone who is contributing. Learned a lot here. At the start of my code I want to read a 10 Position Rotary BCD Coded Switch (I only need 8 positions -3 bits-) I am using GPIO 12-13-14 of the ESP. On my DOIT board the pinout...