When modifying or working with Device Tree files, we frequently need to check pin usage so that we do not inadvertently try to write to claimed or unsuitable pins.
The following recipe employs two scripts that you can run with Node.js and helps us locate which pins are free. The scripts exist thanks to the coding work of Professor Mark Yoder at Rose-Hulman Institute of Technology.
You do not need anything more than your basic BBB kit for this recipe, which is a board connected to your host computer via USB.
To run this script, you need to follow these steps: