Bluetooth Channel Sounding Hardware Documentation

RE: Bluetooth Channel Sounding Hardware Documentation

Elfving — Wed, 10 Dec 2025 10:29:17 GMT

Thanks! Love to hear it Gerrit! 😃

I double checked and the answer is currently no unfortunately; there is nothing to share in regards to more documentation on this.

[quote user="funkmaus"]I would love to provide my customers a proprietary positioning solution based on nRF54L in the near future.[/quote]

Understood. We're focusing on our solution for channel sounding so you are in the right place 🙂

Regards and happy holidays,

Elfving

RE: Bluetooth Channel Sounding Hardware Documentation

funkmaus — Tue, 09 Dec 2025 14:54:31 GMT

Hi Elfving,

Thanks so much for this information, it is good to know that there is something in the pipeline.

In the meantime, is there any preliminary documents that you could already share? I'm currently not building a specific product, I'm more interested in gaining knowledge in proprietary ranging solutions. Nordic has always been my favourite supplier for these kind of applications, as the documentational depth is significantly better in comparison to the usual competitors. I would love to provide my customers a proprietary positioning solution based on nRF54L in the near future.

Thanks again and

Kind regards,

Gerrit.

RE: Bluetooth Channel Sounding Hardware Documentation

Elfving — Tue, 09 Dec 2025 14:29:40 GMT

Looks like we just haven't gotten as far as to include all fo these details yet, though we agree that it should be included. For info about when you can expect this you need to ask your local RSM. If you have any specific question about this though, I can try to look into it now.

Regards,

Elfving

RE: Bluetooth Channel Sounding Hardware Documentation

funkmaus — Thu, 04 Dec 2025 15:37:31 GMT

Hi Elfving,

Thanks for your thoughts on this and the links provided!

I'm not searching for WPs or other high-level information, but actually just interested in some further explanation of the register values and the functionality controlled by them, as it is usually provided for all the other peripheral functionality. Take the Direction Finding (DF), for example: The datasheets for the nRF52 series had a dedicated subsection of the "Radio" section called "Direction Finding". This subsection gave a lot of additional information on how to use the DF-related registers. Interestingly, this subsection does not appear anymore in the nRF54 series' datasheets.

I was wondering if something similar (a dedicated subsection) is available for the Channel Sounding? You know, as the DF subsection was there and has been removed from the nRF54 series' datasheet, I thought there could be a chance that there is something similar for the Channel Sounding feature, which just has never been published?

Kind regards,

Gerrit.

RE: Bluetooth Channel Sounding Hardware Documentation

Elfving — Thu, 04 Dec 2025 11:59:42 GMT

Hi,

[quote user=""]The Bluetooth Channel Sounding specification empowers every compatible device (like the new nRF54L series devices) to be a mini radar actually. [/quote]

Yeah hehe, I guess they do in a way. Though this is currently only done with devices in a connection.

We have more on channel sounding in our docs here, and there is ofcourse a lot from SIG on the matter. Though the datasheet on the 54L15 also goes a lot into the register values used for channel sounding, see eg here.

Though we do not have anything like the WP on direction finding available at the moment, unfortunately.

Regards,

Elfving