Simple question: Can one UUID have multiple handles?

RE: Simple question: Can one UUID have multiple handles?

Paul — Mon, 06 Jun 2016 16:18:19 GMT

Well said! Thanks

RE: Simple question: Can one UUID have multiple handles?

Paul — Mon, 06 Jun 2016 16:17:00 GMT

Thanks for the link. I wanted to confirm that for the same UUID 0x2803, in different service software device will assign different handles for it.

RE: Simple question: Can one UUID have multiple handles?

Ulrich Myhre — Mon, 06 Jun 2016 15:10:44 GMT

The only "unique" in UUIDs is that they uniquely identify a type of attribute. There can be multiple of the same UUIDS on a single device, and the same is true for Characteristic UUIDs (e.g. multiple Heart Rate Services). Handles are completely unique though, but they are device-specific.

RE: Simple question: Can one UUID have multiple handles?

MartinBL — Mon, 06 Jun 2016 14:44:49 GMT

Hi.

I'm not sure if I quite understand your question. BLE is based on the attribute protocol. It can be visualized as a table with attributes. Each attribute, or row in the table, has a handle. Each attribute also has a UUID to identify the type of attribute.

It might look like this (copy paste from this tutorial):