airthings_ble: spurious air pressure after changing batteries

[agoode]

The problem

After I change the batteries in an Airthings Wave Plus, the first few readings have a very incorrect value for air pressure (1310.70 hPa in one case). This causes a large anomaly when viewing timeseries later.

What version of Home Assistant Core has the issue?

core-2024.9.3

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

airthings_ble

Link to integration documentation on our website

https://www.home-assistant.io/integrations/airthings_ble/

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

Wave Plus by Airthings AS Firmware: G-BLE-2.2.0-master+0 Hardware: REV A

[home-assistant[bot]]

Hey there @vincegio, @lastrada, mind taking a look at this issue as it has been labeled with an integration (airthings_ble) you are listed as a code owner for? Thanks!

Code owner commands

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[agoode]

The bad value is 1310.7. 1310.7 * 50 = 65535.

Looks like a similar approach to https://github.com/Airthings/airthings-ble/pull/11 would work.

[LaStrada]

Seems like it, yes. Will make a fix for it! Thanks for reporting 👍

[agoode]

Thank you!