How to specify manufacturer specific data in advertisements with nRF Connect for Desktop?

RE: How to specify manufacturer specific data in advertisements with nRF Connect for Desktop?

Hung Bui — Fri, 26 Feb 2021 15:25:48 GMT

Yes, you can combine any types you want, as long as it doesn't exceed the max length. If it's the case, you can think of using the scan response packet.

RE: How to specify manufacturer specific data in advertisements with nRF Connect for Desktop?

daubsi — Thu, 25 Feb 2021 15:50:06 GMT

Yes, this is known to me. The thing is for my app to find my peripheral I will have to advertise manufacturer specific data, and 4 UUIDs in total (1 of them 128 Bit). See the example C code at the beginning for a reference). I was just wondering if nRFConnect would allow for combining both input types (combobox and manual 0xff data) or whether they would interfere with each other. I'll give it a try later on! Thanks!

RE: How to specify manufacturer specific data in advertisements with nRF Connect for Desktop?

Hung Bui — Thu, 25 Feb 2021 14:49:35 GMT

Hi,
It's up to you to decide if you want to include the UUIDs in the advertising packet or in scan response packet or not.
It's not obligated, the UUIDs usually put inside advertising/scan response packet so that the central/scanner would know if the device supports such services.
You don't have to add the service UUID. If you want you can just add it by click the +Add to ... button.
Note that the max payload of advertising/scan response packet is 31 bytes, including all the headers, length etc.

RE: How to specify manufacturer specific data in advertisements with nRF Connect for Desktop?

daubsi — Thu, 25 Feb 2021 13:50:17 GMT

Dear Hung, thanks for that example. In your screenshot you've explicitly left out the advertised UUIDs in the advertising data and scan response data. The example in the referenced blog entry has those.

Can I just add my service UUIDs using the existing form elements or will I need to add them to the "FF" AD type value as well all at once?

RE: How to specify manufacturer specific data in advertisements with nRF Connect for Desktop?

Hung Bui — Thu, 25 Feb 2021 13:26:50 GMT

Hi,

If you do this:

The device will advertise manufacturer specific data (type 0xFF) with company ID of Nordic (0x0059) and the actual data is 0x1234.
If you want to learn more about the raw advertising packet, you can have a look at my blog here.