I'm building a handheld with recalbox, and all the button controls are already soldered to the GPIOs of the pi. However, I recently had the desire to add an analog joystic, so I bought a teensy clone wrote the program etc.
Now my question: Is it even possible in recalbox to have the GPIO pins as well as a controller control player 1? I didn't find anything so far. (But at the same time, I can't see most of the text on the composite screen I'm using.. :-D)