adafruit_ble: support chibios

[Gigahawk]

Enable ADAFRUIT_BLE on ChibiOS.

Description

Tested on a Bluefruit LE SPI with an STM32F405, it seems to mostly work.
It seems to work fine I pair my phone over Bluetooth, if I power cycle the board, then I can reconnect as normal but no keystrokes get sent even after OUT_BT is pressed.
If I unpair and then pair again it works until the next power cycle.
Disconnecting from my phone without turning off the board works fine.

EDIT: Apparently the latest Bluefruit firmware is just buggy, a cursory test of 0.6.7 as suggested from adafruit/Adafruit_BluefruitLE_Firmware#27 seems to work fine, although it causes one of the QMK init commands to fail with > result: ERROR.

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Issues Fixed or Closed by This PR

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[fauxpark]

I'm already working on this.

[nickwitha-k]

@Gigahawk Just found an issue, while working on setting this up. This 16127 looks to be merged and renames all of the Adafruit functions, vars, etc. Not sure if there's additional consideration required but thought I'd mention as I'm working on testing this now.

[Gigahawk]

everything has been renamed, should work fine now

[stale]

Thank you for your contribution!
This pull request has been automatically marked as stale because it has not had activity in the last 45 days. It will be closed in 30 days if no further activity occurs. Please feel free to give a status update now, or re-open when it's ready.
For maintainers: Please label with awaiting review, breaking_change, in progress, or on hold to prevent the issue from being re-flagged.

[Gigahawk]

@fauxpark is there anything actually preventing this from being merged?

I know the bluetooth refactor is coming eventually, but it seems like that's going to take a while.
I don't see why this can't be merged in the meantime given how small of a change it is.

[github-actions]

Thank you for your contribution!
This pull request has been automatically marked as stale because it has not had activity in the last 45 days. It will be closed in 30 days if no further activity occurs. Please feel free to give a status update now, or re-open when it's ready.
For maintainers: Please label with bug, awaiting review, breaking_change, in progress, or on hold to prevent the issue from being re-flagged.

[github-actions]

Thank you for your contribution!
This pull request has been automatically closed because it has not had activity in the last 30 days. Please feel free to give a status update now, ping for review, or re-open when it's ready.
// [stale-action-closed]

[rockybulwinkle]

@Gigahawk I tried your changes but get an undefined file, "outputselect.h". Can you provide any insight? I'm using the teensy 4.1.

[rockybulwinkle]

Also, @fauxpark, is your work being tracked by an issue and/or on a feature branch? I cannot find it.