How do I map right alt to emit Fn?

kiibohd / controller

Kiibohd Controller

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How do I map right alt to emit Fn? #397

Open qubbit opened 2 years ago

qubbit commented 2 years ago

Hi, how do I map my right alt key to act like the macOS Fn key? I could not find this key in the configurator

Device:

Kira

Firmware Origin:

Default firmware

macOS

Version:

"bcdDevice" = 1222

Reproduction Steps:

Can't reproduce this issue because the Fn key does not exist in Kira

Resulting Issue:

haata commented 2 years ago

Fn is tricky as it's actually covered in the "Vendor Specific" portion of the USB spec. Apple coded their OS such that only "Apple" keyboards can officially send the Fn key (at least the last time I checked a few years ago).

hasu of TMK has info here on the subject: https://github.com/tmk/tmk_keyboard/wiki/FAQ-Keymap#applemac-keyboard-fn