* Move to ZephyrBuildConfig package based on Zephyr best practices.
* Support multiple shields properly, e.g. -DSHIELD="foo bar", which
allows using existing upstream shields like `ssd1306_128x64` along
with another ZMK shield.
* Properly *add* the "ZMK config" .conf file to the conf file list,
so that existing board .conf files in `app/boards/<board>.conf` are
properly honored still. Needed for overrides to usptream boards when
combined with a local `<shield>.conf` file.
* Add new API/status to track state of the
peripheral connection to the central.
* Add new peripheral status widget for displaying
the current status of the connection to
the central.
* Add strlcpy from public domain version.
* Leverage strlcpy to detect truncation of behavior dev strs, and log.
* Use `offsetof` for cleaner detection on peripheral side.
* GATT characteristic allowing passng data + behavior
label to invoke the behavior on the peripheral side.
* Behaviors have a locality setting to specify where they run.
* Build reset/power/RGB on peripheral.
This is a generalization of the existing concept of tri-layer support
that's already well known. Essentially, a conditional-layer
configuration activates a particular layer (the then-layer) when one or
more other layers (the if-layers) are activated.
This is commonly used on ortho keyboards to activate a third "adjust"
layer while the primary two layers ("lower" and "raise") are active.
* Fire an event w/ layer number, state, and timestamp
when a layer is activated/deactivated.
* Add `zmk_keymap_highest_layer_active()` query.
Co-authored-by: KemoNine <mcrosson@kemonine.info>
Added a new setting to remember the user's preferred endpoint. When both USB and
BLE are connected, the preferred endpoint will be used.
Added a new behavior to control this setting. It supports commands:
&end END_USB - Prefer USB output
&end END_BLE - Prefer BLE output
&end END_TOG - Toggle between USB and BLE
Added some utility functions and an event for tracking the state of the
USB connection.
Updated endpoints.c to select a single endpoint to send HID reports to
based on the status of the USB and BLE connections. Partially fixes#206.
Future commits will add a user setting to control which endpoint is used if
both USB and BLE are ready.
