Withings protocol app

This app handles the protocol for the Withings ScanWatch 2.

Very early in development.

Handles:

• Sensor data (Heart rate, temperature, breath rate, steps, charge state / level)
• Automatic activities (walking, running), segmentation is implemented locally instead of using the API so it's a bit different
• Manual activities (starting an activity from the watch), has a custom UI for the 'live exercise mode'
• ECG
• Most settings
• Notifications (only sends a test notification, does not forward system notifications)

Screenshots

Notes:

• Protocol reverse engineered from app decompile / .so decompile / firmware disassembly
• Enabling notifications lowers battery life (estimated to 20 days instead of 30~35)

DEBUG DATA

There's a stream of DEBUG data which holds some "unknown" data at a high sampling rate (mostly 1 Hz), which are not used for anything as far as I'm aware

• Maybe 1Hz acceleromter
• unknown
• unknown
• 1Hz Temperature

It also has a debug log and the watch settings' database.

On the original app, this data is sent straight to withings. I'm not sure why they need 1Hz raw sensor data but I don't like it.