BLE HID -> NotImplementedError: Only one report id per Application collection supported

[ThomasAtBBTF]

Firmware

Adafruit CircuitPython 7.0.0-alpha.3-57-g683304fd3-dirty on 2021-06-19; Adafruit ItsyBitsy nRF52840 Express with nRF52840

Code/REPL

From the ble_keyboard example, I copied this code to my tester and created BRAILLE_HID_DESCRIPTOR based on code that works for OSX over USB.

hid = HIDService(hid_descriptor=BRAILLE_HID_DESCRIPTOR)

Behavior

Traceback (most recent call last):
  File "code.py", line 46, in <module>
  File "/lib/adafruit_ble/services/standard/hid.py", line 328, in __init__
  File "/lib/adafruit_ble/services/standard/hid.py", line 419, in _init_devices
NotImplementedError: Only one report id per Application collection supported

Code done running.

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If I replace in the code line the descriptor to

hid_descriptor=DEFAULT_HID_DESCRIPTOR

the example works as normal.

Description

I am not sure if I should call it a bug or feature request.
The descriptor which is working over USB is not accepted here.

Additional Info

Maybe I can split the descriptor into multiple smaller descriptors and create multiple devices, but I am really not sure how to and if VoiceOver IOS will then accept the braille display over BLE

Here the file with the descriptor:
BRAILLE_HID.zip

Also for reference:
hut1_22.pdf
where on page 281 the "Braille Display Page (0x41)" is documented.

[dhalbert]

There is already an issue for this: #4868. Would it make sense to move your requirements to there?

[ThomasAtBBTF]

Yes!