BLE Box - No more possible to connect to Box

[pylapp]

Severity

Critical

Description

With newer commits and also commits of older tags (and initial commit 722eca7), it is no more possible to connect to the Baah Box in Bluetooth.
An iPhone with the iOS app can connect quickly to the Baah Box, however Android apps cannot anymore.

Details

On Android app side, the box selector is empty (see capture).

On Android source code (logcat), the scan fails with an error code set to SCAN_FAILED_ALREADY_STARTED (see capture).

In the past the scan for the Baah Boxes was efficient, this issue has happened suddenly.

How to reproduce

1. Ensure the Baah Box is switched on
2. Start the Android app
3. Click on the Bluetooth icon
4. Wait a bit
5. Click again on the icon
6. See the empty selector

Expected behavior

Once clicked on the Bluetooth icon, the available Baah Box must be displayed in the selector.

Baah Box setup up

Power of the Baaah Box: only 6*, which seems to be 75%
Version of the Baah Box firmware is: 2.00.

Android devices under test

• Nexus 6P with Android stock 8.1.0
• OnePlus One with LineageOS 16.0 powering Android 9.