How to enable fn key + Keyboard Arrow

[spica1120]

when connected as a bluetooth keyboard,
When I press the arrow keys in combination with the fn key,
The fact that the fn key is pressed is ignored.
It is not recognized as an arrow key and I want to fix it.

[Mavox-ID]

The problem is not in the firmware, everything is ok with me
The problem is in your M5 device

[wdoekes]

@spica1120 try #35 . And for best results, create a branch and merge #36 into it too.