How can I figure out what or_pattern to use for BlueZ passive mode?

[adamse]

Is it possible to figure out what filtering I can use by looking at the active scan AdvertisementData? How do I know which AdvertisementDataType to select, and what data are the content_of_pattern bytes matched against?

[adamse]

Ok, this worked out for me:

• I look at AdvertisementData.manufacturer_data so AdvertisementDataType.MANUFACTURER_SPECIFIC_DATA makes sense for me
• In this case the bytes seem to match the manufacturer ID, so the key in AdvertisementData.manufacturer_data encoded as little endian works (2 bytes)

I guess I'd have to look at the BlueZ source to really understand what's going on, but for now I'm happy that my guess worked out!

[adamse]

https://www.bluetooth.com/specifications/specs/core-specification-supplement-11/ documents the data format of "Manufacturer Specific Data".