keyboards/planck/light/rules.mk

   1 MIDI_ENABLE = yes
   2 AUDIO_ENABLE = yes           # Audio output on port C6
   3 MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
   4 NKRO_ENABLE = yes            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
   5 BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
   6
   7 MCU = at90usb1286