Cannot configure the "FN" key

[NewAlexandria]

• Firmware/Compiling Origin:
  Configurator app produces the error when compiling KLL from configurator-JSON.

• KLL Snippet:

  "matrix": [
    {
      "code": "0x01",
      "x": 0,
      "y": 0,
      "w": 4,
      "h": 4,
      "layers": {
        "0": {
          "key": "FN",
          "label": "FN"
        },
        "1": {
          "key": "#:flashMode()",
          "label": "FLASH"
        },
        "2": {
          "key": "#:animation_control(4)",
          "label": "V:RESET"
        }
      },
      "triggers": null
    },

• OS:
  OSX Mojave

• Version:
  Configurator 1.0.0

• Reproduction Steps:

1. set a key to the FN symbol, in a JSON file
2. import to configurator
   1.build a KLL file

• Resulting Issue:
  An error is thrown

[1/50] Generating KLL Layout
FAILED: generatedKeymap.h kll_defs.h usb_hid.h generatedPixelmap.c kll.json 
cd /controller && cmake -E env GITHUB_APIKEY=376423eb012a4587857428bf0bf10ac37415cb99 python3 -m kll --kiibohd-debug --config /controller/Scan/Devices/ISSILed/capabilities.kll /controller/Scan/Devices/MatrixARMPeriodic/capabilities.kll /controller/Scan/Devices/Storage/capabilities.kll /controller/Macro/PartialMap/capabilities.kll /controller/Macro/PixelMap/capabilities.kll /controller/Output/HID-IO/capabilities.kll /controller/Output/USB/capabilities.kll /controller/Debug/latency/capabilities.kll /controller/Debug/led/capabilities.kll /controller/Lib/arm_cortex.kll /controller/Lib/sam.kll --base /controller/Scan/Kira/scancode_map.kll --default /root/.local/share/virtualenvs/Keyboards-41-guJFC/lib/python3.6/site-packages/kll/layouts/stdFuncMap.kll /tmp/tmp.gHvENFpD4L/Kira-Standard-0.kll --partial /root/.local/share/virtualenvs/Keyboards-41-guJFC/lib/python3.6/site-packages/kll/layouts/stdFuncMap.kll /tmp/tmp.gHvENFpD4L/Kira-Standard-1.kll --partial /root/.local/share/virtualenvs/Keyboards-41-guJFC/lib/python3.6/site-packages/kll/layouts/stdFuncMap.kll /tmp/tmp.gHvENFpD4L/Kira-Standard-2.kll --emitter kiibohd --def-output /tmp/tmp.gHvENFpD4L/kll_defs.h --map-output /tmp/tmp.gHvENFpD4L/generatedKeymap.h --hid-output /tmp/tmp.gHvENFpD4L/usb_hid.h --pixel-output /tmp/tmp.gHvENFpD4L/generatedPixelmap.c --json-output /tmp/tmp.gHvENFpD4L/kll.json
ERROR: 'FN' (Layout(name=default)) is an invalid USB HID Code Lookup...
  File "/root/.local/share/virtualenvs/Keyboards-41-guJFC/lib/python3.6/site-packages/kll/common/parse.py", line 115, in hidCode
    hid_code = int(lookup[match_name], 0)
Invalid dictionary lookup, check syntax.
ERROR: OperationSpecificsStage:parse -> /tmp/kll/tmptmp.gHvENFpD4L@['Kira-Standard-0']_processed.kll:13
ERROR: Invalid stage status 'Incomplete' for 'OperationSpecificsStage'.
ninja: build stopped: subcommand failed.
Error in build. Exiting...

Context

On Mac / OSX keyboards, the lower-left key is "Function", and is ASCII code 63. I am unsure if it should be added to a file like this or if the place to put it is wherever this file has gone.

[haata]

Using the FN key on macOS is rather tricky. I need to look into it a bit more, though this may require HID-IO integration (https://github.com/hid-io/hid-io).

[NewAlexandria]

Well I feel like less of a lazy bum for not figuring it out