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Bedjet V2 support #1789

Open jcustenborder opened 2 years ago

jcustenborder commented 2 years ago

Describe the problem you have/What new integration you would like

It looks like support for the v3 version of the BedJet has been added. It would be amazing to have support for the older v2 version as well. It seems to use a similar protocol to the v3.

Please describe your use case for this integration and alternatives you've tried:

Additional context

jhansche commented 2 years ago

The protocol is relatively similar, though the status packet is a different format. I think we can support this by switching the codec object either via config (first iteration) or by detecting it at runtime.

jhansche commented 2 years ago

I've been able to reverse engineer most of the protocol itself, particularly the incoming status packet, and the outgoing command/scene packets.

However, the transport layer is actually not as similar as I thought it would be. The BedJet V3 uses a series of BLE GATT service characteristics to communicate, but the V2 appears to connect to the device via Bluetooth SPP. Unfortunately I don't really have an easy way to test this, but I can try some things.

@jcustenborder do you think you'd be able to get nRF Connect up and running (there are iOS and Android apps, but I've only used the Android app), and capture a log from scanning to pairing/connecting, and receiving realtime status updates? This might help me with emulating the V2 device for testing, before I have something for you to try.

jcustenborder commented 2 years ago

@jhansche Sorry buddy! I didn't see a notification. I'll work on this and get something for you.