I’m considering adding a custom serial-based protocol to Eyesy. I think it could be possible by repurposing UART connection used for serial MIDI. I mostly understand what needs to be done in software part, but I’m not sure about some hardware details.
AFAICT, MIDI uses first UART port that is connected to GPIO 14/15 of RPi Compute (pins 51&53). I’ve found that there are exposed vias connected to those pins that should be fairly easy to solder to. But I’m not sure what is TX line connected to.
Can I get a confirmation that I’m looking at correct UART pins and won’t summon The Dark Lord himself by using them?