Thanks to [[https://austinmorlan.com/][Austin Morlan]] for his Odroid Go code (MIT license), some of which I have modified.
Thanks to [[https://austinmorlan.com/][Austin Morlan]] for his Odroid Go code (MIT license), some of which I have modified. It is kept in Dependencies/embedded-game-programming for reference, but that copy is not used in the app.
I found it much easier to get working than [[https://github.com/OtherCrashOverride/odroid-go-firmware][Odroid-Go-Firmware]] (note: different version of that firmware [[https://github.com/OtherCrashOverride/go-play][here]]).