So I tried to hook up my Atmega32u4 to my RPIz through the USB port (PP22 & PP23) but nothing happens when I press the buttons on Retropies welcome screen. It also says no keyboard is present.
I was told to plug in a regular keyboard and try that, which I did, but no luck there either.
I then measured PP22 & PP23 and got ~3.12V.
I have no idea what to do next. Since the regular keyboard wasn't recognized, what could be wrong with the port? Any settings in the RPIz?
Raspberry Pi Zero USB not working?
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