with the help of nrf52840 can i do distance measurement ?

RE: with the help of nrf52840 can i do distance measurement ?

Simonr — Thu, 24 Apr 2025 11:14:04 GMT

As explained in the sample documentation, the synchronization is done within the advertising, which, if I'm not mistaken, is not supported by Coded PHY. After the advertiser and scanner has done synchronization they move to the distance measuring deciding a reflector and initiator and doing the ranging.

Best regards,

Simon

RE: with the help of nrf52840 can i do distance measurement ?

Romal — Wed, 23 Apr 2025 08:56:22 GMT

and also please tell me how to synchronize both the device at a time like, I need to call dm_request_add() function from both the hand initiator and reflector right ?

RE: with the help of nrf52840 can i do distance measurement ?

Romal — Wed, 23 Apr 2025 07:24:28 GMT

Hi Simon,

Thanks for the clarification.

Just to confirm my understanding — I’m using two nRF52840 devices. One device is advertising using Coded PHY, and the other device is scanning for that advertisement. Once discovered, I intend to perform distance measurement using the dm_request_add() function from the Distance Measurement API.

Given your statement that the ranging is done "proprietarily outside of the BLE specification," does that mean the actual distance measurement itself does not operate over Coded PHY, even though discovery can happen via Coded advertisements?

In short — is it valid to use Coded PHY for discovery and then use dm_request_add() for distance measurement, even if the measurement happens over a proprietary PHY under the hood?

Appreciate your clarification!

Br,
romal

RE: with the help of nrf52840 can i do distance measurement ?

Simonr — Tue, 22 Apr 2025 13:43:40 GMT

The Nordic Distance toolbox does not support doing ranging in Coded PHY. The ranging itself is done proprietarily outside of BLE specification.

Best regards,

Simon

RE: with the help of nrf52840 can i do distance measurement ?

Romal — Mon, 21 Apr 2025 09:20:59 GMT

i want to advertise my one device into coded and into another device i want to do coded distance measurement it is possible ?

RE: with the help of nrf52840 can i do distance measurement ?

James168 — Mon, 21 Apr 2025 08:54:06 GMT

blog.nordicsemi.com/.../using-the-nordic-distance-toolbox-to-measure-the-distance-between-short-range-radios