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feat(bluetooth): Add back profiles, split fixes.

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* Add back in profiles, not using Zephyr
  BT identity infrastructure.
* Restore additional `&bt` commands for profile
  operations.
* Fix for split pairing and subscriptions, since
  Zephyr persists subscriptions across connects.
* Remove keymap from peripheral builds, reduces
  firmware size, and avoids unneeded attempts
  to send HID data.
This commit is contained in:
Pete Johanson
2020-09-08 23:26:00 -04:00
parent e88d0833c5
commit 39f980a06d
14 changed files with 376 additions and 128 deletions
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46
docs/docs/behavior/bluetooth.md
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@@ -6,8 +6,8 @@ sidebar_label: Bluetooth
## Summary
The bluetooth behavior allows management of various settings and states related to the bluetooth connection(s)
between the keyboard and the host. As of right now, there is only one such action support, but in the future
more will be added.
between the keyboard and the host. By default, ZMK supports five "profiles" for selecting which bonded host
computer/laptop/keyboard should receive the keyboard input; many of the commands here operation on those profiles.
## Bluetooth Command Defines
@@ -22,16 +22,22 @@ This will allow you to reference the actions defined in this header such as `BT_
Here is a table describing the command for each define:
| Define | Action |
| -------------------- | --------------------------------------------------------- |
| `BT_CLEAR_BONDS_CMD` | Clear bond information between the keyboard and host [^1] |
| Define | Action |
| -------------------- | ---------------------------------------------------------------------------------------------- |
| `BT_CLEAR_BONDS_CMD` | Clear bond information between the keyboard and host for the selected profile [^1] |
| `BT_PROF_NEXT_CMD` | Switch to the next profile, cycling through to the first one when the end is reached. |
| `BT_PROF_PREV_CMD` | Switch to the previous profile, cycling through to the last one when the beginning is reached. |
| `BT_PROF_SEL_CMD` | Select the 0-indexed profile by number. |
Because future bluetooth commands will take an additional parameter, it is recommended to use
the following alias in your keymap to avoid having to change it later.
Because at least one bluetooth commands takes an additional parameter, it is recommended to use
the following aliases in your keymap to avoid having to specify an ignored second parameter:
| Define | Action |
| ---------------- | ---------------------------------------------------------------------- |
| `BT_CLEAR_BONDS` | Alias for `BT_CLEAR_BONDS_CMD 0` to clear the bond to the current host |
| Define | Action |
| ---------------- | ---------------------------------------------------------------------------------------- |
| `BT_CLEAR_BONDS` | Alias for `BT_CLEAR_BONDS_CMD 0` to clear the current profile's bond to the current host |
| `BT_PROF_NEXT` | Alias for `BT_PROF_NEXT_CMD 0` to select the next profile |
| `BT_PROF_PREV` | Alias for `BT_PROF_PREV_CMD 0` to select the previous profile |
| `BT_PROF_SEL` | Alias for `BT_PROF_SEL_CMD` to select the given profile, e.g. `&bt BT_PROF_SEL 1` |
## Bluetooth Behavior
@@ -45,8 +51,26 @@ The bluetooth behavior completes an bluetooth action given on press.
### Examples
1. Behavior to clear the paired host:
1. Behavior binding to clear the paired host for the selected profile:
```
&bt BT_CLEAR_BONDS
```
1. Behavior binding to select the next profile:
```
&bt BT_PROF_NEXT
```
1. Behavior binding to select the previous profile:
```
&bt BT_PROF_NEXT
```
1. Behavior binding to select the 2nd profile (passed parameters are [zero based](https://en.wikipedia.org/wiki/Zero-based_numbering)):
```
&bt BT_PROF_SEL 1
```