FYI/FWIW I've created a related thread for my fly2040 variant - as it has slightly modified firmware and has Atmosphere support (sysmodule & homebrew app).
Thought I'd share here as it's picofly based and picofly compatible (with extras).
https://gbatemp.net/threads/fly2040-picofly-variant-with-leds-atmosphere-nx-apps.637808/
Thought I'd share here as it's picofly based and picofly compatible (with extras).
https://gbatemp.net/threads/fly2040-picofly-variant-with-leds-atmosphere-nx-apps.637808/