Problem with multiple sensors

[flecmart]

Hi,

I updated the custom_component because of the breaking change in the latest home assistant release. Previously, I ran an airwave plus and and airwave mini with the custom_component for months without a problem.

After the migration only one of my sensors seem to connect. The other one becomes unavailable. Both sensors work independently but when I try to connect them both, one fails without any log in the debug log. It just says:

2022-07-16 09:04:34 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] Searching for Airthings sensors...
2022-07-16 09:04:34 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] Getting info about device(s)
2022-07-16 09:04:34 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] Connecting to AA:AA:AA:AA:AA:AA
2022-07-16 09:04:34 DEBUG (SyncWorker_6) [custom_components.airthings_wave.sensor] Searching for Airthings sensors...
2022-07-16 09:04:34 DEBUG (SyncWorker_6) [custom_components.airthings_wave.sensor] Getting info about device(s)
2022-07-16 09:04:34 DEBUG (SyncWorker_6) [custom_components.airthings_wave.airthings] Connecting to BB:BB:BB:BB:BB:BB
2022-07-16 09:04:37 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] Connected to AA:AA:AA:AA:AA:AA
2022-07-16 09:04:39 INFO (SyncWorker_5) [custom_components.airthings_wave.sensor] AA:AA:AA:AA:AA:AA: Manufacturer: Airthings AS Model: 2920 Serial: 099595 Device: Airthings Wave Mini Firmware: M-BLE-2.0.8-master+0 Hardware Rev.: REV E
2022-07-16 09:04:39 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] Getting sensors
2022-07-16 09:04:39 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] Connecting to AA:AA:AA:AA:AA:AA
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] Connected to AA:AA:AA:AA:AA:AA
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] 00002a29-0000-1000-8000-00805f9b34fb (Handle: 49): Manufacturer Name String
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] 00002a27-0000-1000-8000-00805f9b34fb (Handle: 47): Hardware Revision String
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] 00002a26-0000-1000-8000-00805f9b34fb (Handle: 45): Firmware Revision String
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] 00002a25-0000-1000-8000-00805f9b34fb (Handle: 43): Serial Number String
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] 00002a24-0000-1000-8000-00805f9b34fb (Handle: 41): Model Number String
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] 00002a23-0000-1000-8000-00805f9b34fb (Handle: 39): System ID
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] f000ffc5-0451-4000-b000-000000000000 (Handle: 34): Unknown
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] f000ffc2-0451-4000-b000-000000000000 (Handle: 30): Unknown
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] f000ffc1-0451-4000-b000-000000000000 (Handle: 26): Unknown
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] b42e41c4-ade7-11e4-89d3-123b93f75cba (Handle: 21): Unknown
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] b42e3ef4-ade7-11e4-89d3-123b93f75cba (Handle: 17): Unknown
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] b42e3b98-ade7-11e4-89d3-123b93f75cba (Handle: 13): Unknown
2022-07-16 09:04:43 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] 00002a05-0000-1000-8000-00805f9b34fb (Handle: 9): Service Changed
2022-07-16 09:04:44 WARNING (MainThread) [homeassistant.components.sensor] Setup of sensor platform airthings_wave is taking over 10 seconds.
2022-07-16 09:04:44 WARNING (MainThread) [homeassistant.components.sensor] Setup of sensor platform airthings_wave is taking over 10 seconds.
2022-07-16 09:04:45 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] AA:AA:AA:AA:AA:AA: Found sensor UUID: b42e3b98-ade7-11e4-89d3-123b93f75cba Handle: 13
2022-07-16 09:04:45 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] Get initial sensor data to populate HA entities
2022-07-16 09:04:45 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] Connecting to AA:AA:AA:AA:AA:AA
2022-07-16 09:04:48 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] Retrying AA:AA:AA:AA:AA:AA
2022-07-16 09:04:51 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] Connected to AA:AA:AA:AA:AA:AA
2022-07-16 09:04:51 DEBUG (SyncWorker_5) [custom_components.airthings_wave.airthings] AA:AA:AA:AA:AA:AA Got sensordata {'date_time': '2022-07-16T09:04:51.735477', 'temperature': 25.19, 'humidity': 37.87, 'voc': 520.0}
2022-07-16 09:04:53 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] AA:AA:AA:AA:AA:AA: date_time: 2022-07-16T09:04:51.735477
2022-07-16 09:04:53 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] Added sensor entity AA:AA:AA:AA:AA:AA-date_time
2022-07-16 09:04:53 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] AA:AA:AA:AA:AA:AA: temperature: 25.19
2022-07-16 09:04:53 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] Added sensor entity AA:AA:AA:AA:AA:AA-temperature
2022-07-16 09:04:53 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] AA:AA:AA:AA:AA:AA: humidity: 37.87
2022-07-16 09:04:53 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] Added sensor entity AA:AA:AA:AA:AA:AA-humidity
2022-07-16 09:04:53 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] AA:AA:AA:AA:AA:AA: voc: 520.0
2022-07-16 09:04:53 DEBUG (SyncWorker_5) [custom_components.airthings_wave.sensor] Added sensor entity AA:AA:AA:AA:AA:AA-voc
2022-07-16 09:04:53 DEBUG (SyncWorker_2) [custom_components.airthings_wave.sensor] State AA:AA:AA:AA:AA:AA-date_time 2022-07-16T09:04:51.735477
2022-07-16 09:04:53 DEBUG (SyncWorker_0) [custom_components.airthings_wave.sensor] State AA:AA:AA:AA:AA:AA-temperature 25.19
2022-07-16 09:04:53 DEBUG (SyncWorker_0) [custom_components.airthings_wave.sensor] State AA:AA:AA:AA:AA:AA-humidity 37.87
2022-07-16 09:04:53 DEBUG (SyncWorker_3) [custom_components.airthings_wave.sensor] State AA:AA:AA:AA:AA:AA-voc 520.0
2022-07-16 09:05:19 WARNING (MainThread) [homeassistant.bootstrap] Waiting on integrations to complete setup: sensor.airthings_wave_2
2022-07-16 09:05:34 ERROR (MainThread) [homeassistant.components.sensor] Setup of platform airthings_wave is taking longer than 60 seconds. Startup will proceed without waiting any longer.
2022-07-16 09:07:23 DEBUG (SyncWorker_3) [custom_components.airthings_wave.airthings] Connecting to AA:AA:AA:AA:AA:AA
2022-07-16 09:07:33 WARNING (MainThread) [homeassistant.helpers.entity] Update of sensor.airthings_wave_mini_temperature is taking over 10 seconds
2022-07-16 09:07:34 DEBUG (SyncWorker_3) [custom_components.airthings_wave.airthings] Connected to AA:AA:AA:AA:AA:AA
2022-07-16 09:07:34 DEBUG (SyncWorker_3) [custom_components.airthings_wave.airthings] AA:AA:AA:AA:AA:AA Got sensordata {'date_time': '2022-07-16T09:07:34.613619', 'temperature': 25.2, 'humidity': 37.83, 'voc': 512.0}
2022-07-16 09:07:36 DEBUG (SyncWorker_3) [custom_components.airthings_wave.sensor] State AA:AA:AA:AA:AA:AA-temperature 25.2
2022-07-16 09:07:36 DEBUG (SyncWorker_9) [custom_components.airthings_wave.sensor] State AA:AA:AA:AA:AA:AA-humidity 37.83
2022-07-16 09:07:36 DEBUG (SyncWorker_2) [custom_components.airthings_wave.sensor] State AA:AA:AA:AA:AA:AA-voc 512.0
2022-07-16 09:09:53 DEBUG (SyncWorker_3) [custom_components.airthings_wave.airthings] Connecting to AA:AA:AA:AA:AA:AA
2022-07-16 09:09:55 DEBUG (SyncWorker_3) [custom_components.airthings_wave.airthings] Connected to AA:AA:AA:AA:AA:AA
2022-07-16 09:09:55 DEBUG (SyncWorker_3) [custom_components.airthings_wave.airthings] AA:AA:AA:AA:AA:AA Got sensordata {'date_time': '2022-07-16T09:09:55.913570', 'temperature': 25.2, 'humidity': 37.83, 'voc': 512.0}
2022-07-16 09:09:58 DEBUG (SyncWorker_3) [custom_components.airthings_wave.sensor] State AA:AA:AA:AA:AA:AA-temperature 25.2
2022-07-16 09:09:58 DEBUG (SyncWorker_0) [custom_components.airthings_wave.sensor] State AA:AA:AA:AA:AA:AA-humidity 37.83
2022-07-16 09:09:58 DEBUG (SyncWorker_10) [custom_components.airthings_wave.sensor] State AA:AA:AA:AA:AA:AA-voc 512.0

While it says it is connecting to Sensor A and B it actually ever connects only to A.

Did anyone try multiple sensors? I suspect some kind of race condition here caused by the switch to asyncio. Bleak has an example on how to connect to two devices at the same time: https://github.com/hbldh/bleak/blob/develop/examples/two_devices.py

Maybe this helps someone. I will try to check the code for this myself but currently I am out of free time.

Thanks for the integration :-)

[flecmart]

I examined this last night and I think the problem is that bleak cannot be used by two python programs at the same time in a non blocking way. Because my configuration looked like this:

sensor:
   - platform: airthings_wave
      scan_interval: 150
      elevation: !secret home_elevation
      mac: !secret airthings_wave_mini
    - platform: airthings_wave
      scan_interval: 150
      elevation: !secret home_elevation
      mac: !secret airthings_wave_plus

Home assistant spawned two python processes and one was then blocking the other (if my assumption is correct).

It works for multiple devices when I do not provide mac adresses and let the component scan for near BLE devices using a config l ike this:

sensor:
  - platform: airthings_wave
    scan_interval: 150
    elevation: !secret home_elevation

While playing around I went over the code and made sure disconnect() will be called after every connect()... this was not the case previosuly. I created a PR so someone could review and eventually merge those changes.

[onyxhat]

Was having the same issue with explicitly defined mac for multiple sensors - removing that seems to have fixed my problem, but would be nice to have that functionality restored or have the docs updated.

[flecmart]

Agree! For that my theory has to be verified and we have to find a way to use bleak clients from two separate python processes in a non blocking way.

I am no expert in asynchronous programming and at the moment my time is very limited... If no one will look a this I might get back learn something new about async programming but this might take a while...