I?m using a RPI 3 as an emulator box with RetroPie. Two joysticks (and a few buttons) are wired to a 40-pin GPIO header that connects directly to the RPI. When the joysticks are actioned, the information arrives to the RPI and everything works.
I want to use the GPIO wiring to connect the same joystick to a Mac/PC through USB. So I need something that (1) allows the connection of a GPIO header and (2) process the inputs and converts them to USB data that can be understood by a Mac/PC.
I have seen (and ordered) an RTk.GPIO (https://uk.pi-supply.com/products/ryant ... ce?lang=es) with that goal.
Do you think that the board will be able to understand and forward to its USB port the joystick information? Do you know if I'll need to do something on the PC/Mac in order to process the (hopefully) received USB data?
If not, do you have some idea how I could get closer to the GPIO2USB goal, so a GPIO input can be forwarded and received via USB on a PC/Mac?