K10 pro + manual firmware build = Bluetooth not working?

[anenviousguest]

Issue Description

Hi folks, K10 Pro owner here.

I have a K10 Pro running on Windows 10, with a stock firmware and wanted to configure VIA macros which uses delays whose support has been added to VIA long ago.

Sample macro code could look like:

{KC_LGUI}{500}mycoolsoftware{500}{KC_ENT}

However, after pairing VIA with my keyboard and trying to edit the macro code, I've got an error message from VIA saying that delays are not supported with current version of firmware.

Never mind, I built the firmware from the source code, trying both wireless_playground as well as bluetooth_playground branches and using this command to build:

make keychron/k10_pro/ansi/white:via

On its own, the firmware builds just fine, and also I can successfully flash it with QMK Toolbox. Also macro starts supporting delays, yay!

…However!!!...

Seems like the firmware built from those branches does not fully support Bluetooth functionality - I still can pair the device anyhow, but the keyboard is not recognized as a keyboard any longer, and the keystrokes do not work - tried with both *playground branches listed above, after deleting previously paired bluetooth device definitions. After flashing to the stock firmware, Bluetooth is working fine again.

I researched the issues on this repo and found few mentions (e.g. here) that Bluetooth-related code is not published due to it being NDA'ed.

Questions:

1. Does that really mean that the firmware built from the source code for K10 Pro is never going to support Bluetooth?
2. Or am I missing something? What is then the way to get the Bluetooth working for the firmware built from the source code (from wireless- or bluetooth playground branches)?

Seems like a bummer to be forced to choose between Bluetooth and latest VIA support 😅

Thanks.

[anenviousguest]

hi @lokher , do you have an insight into the questions above? Thank you.

[lokher]

Can you try the firmware https://github.com/Keychron/qmk_firmware/tree/bluetooth_playground/keyboards/keychron/k10_pro/firmware

[anenviousguest]

@lokher yeah, i actually found that the keyboard works over Bluetooth, even with a firmware built from sources - looks like the old device definition got somehow stuck in the Windows settings, I had to remove the old device from the Windows BT settings and it started working...

[anenviousguest]

BT actually works.