Because the reporting of battery state is inconsistent between different
models, the device's battery state was not correctly processed in GB.
For at least the firmware on the Xiaomi Watch S1 Active, the charger
state is broadcast through a separate message from the message
containing the battery level. Even though the battery level was
requested by GB upon receiving this broadcast, the charger state got
discarded as it was expected to also be included in the result of the
subsequent request.
This patch changes the name of the `Charger` message to `DeviceState`
and includes more fields that may be presented by some device models.
Furthemore, the broadcast is cached so that the charger state can be
processed from this cache instead of the battery level response message.
The Xiaomi Watch S1 Active does not send some fields that have
been declared as `required`, which results in those messages
not being processed at all.
- use `BLETypeConversions`, added the missing functions there (+ unit tests for all)
- change Java package of Protobuf definitions so that they are not discarded by Proguard
-- +add subpackages to the Proguard rules so we can subdivide the classes
+ disable device-specific settings for Vivomove (no settings yet)
- communication protocols
- device support implementation
- download FIT file storage
Features:
- basic connectivity: time sync, battery status, HW/FW version info
- real-time activity tracking
- fitness data sync
- find the device, find the phone
- factory reset
Features implemented but not working:
- notifications: fully implemented, seem to communicate correctly, but not shown on watch
Features implemented partially (not expected to work now):
- weather information (and in future possibly weather alerts)
- music info
- firmware update: only the initial file upload implemented, not used
Things to improve/change:
- Device name hardcoded in `VivomoveHrCoordinator.getSupportedType`, service UUIDs not available
- Download FIT file storage: Should be store (and offer the user to export?) the FIT data forever?
- Obviously, various code improvements, cleanup, etc.
