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WebBluetoothCG / demos

Demo applications showing off Web Bluetooth
https://webbluetoothcg.github.io/demos/
Apache License 2.0
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How to find which is the service UUID #75

Closed jordimc closed 5 years ago

jordimc commented 5 years ago

Hello,

I am having troubles on understanding from where you got the service UUID: services: ['000018f0-0000-1000-8000-00805f9b34fb']

As 0x18F0 is not listed on the https://www.bluetooth.com/specifications/assigned-numbers/service-discovery.

I would appreciate any thoughts on this. Regards,

beaufortfrancois commented 5 years ago

@entertailion might know.

NoRulesJustFeels commented 5 years ago

I can't remember exactly, but I did find some of these UUIDs from other open source projects. Some came from contacting the device manufacturers.

jordimc commented 5 years ago

Thanks for the answers. I am testing now with a NFC card reader and again the services and characteristics offered are not found in the list provided by bluetooth.com. It might be that my assumption is wrong or the specification is not being followed by the manufacturers.

jyasskin commented 5 years ago

The standardized services are listed in https://www.bluetooth.com/specifications/gatt/services, not the Service Discovery page, and their UUIDs are found by adding the "assigned number" to the top chunk of the "base UUID", 00000000-0000-1000-8000-00805F9B34FB. 0x18F0 is not assigned there, so the manufacturer is being naughty, but there's not much we can do about it.

jordimc commented 5 years ago

That makes sense. Thanks for the clarification @jyasskin!