I'm working on an emoji keyboard and it requires different input depending on the OS it's connected to. I've written the relevant methods and can manually set which one is used. The only solution I can come up with now is to add a three option switch, but that'll cost me pins I'd rather not use. Is there a way to get the board to auto-detect the operating system it's connected to?

I'm working on an emoji keyboard and it requires different input depending on the OS it's connected to. I've written the relevant methods using Arudion's default Keyboard library and can manually set which one is used. I'm wondering if there is a method or library for Arduino (currently using a Adafruit Feather 32u4 Bluefruit LE) that allows me to detect the OS.

If not, I'll set up a switch, but that'll cost me pins.