BLE Sniffer with nRF52840

RE: BLE Sniffer with nRF52840

Bhagyashree badiger — Tue, 25 Mar 2025 10:15:08 GMT

Thank you for the reply

RE: BLE Sniffer with nRF52840

SwRa — Mon, 24 Mar 2025 11:52:40 GMT

Hi Bhagyashree,

[quote user="Bhagyashree badiger"]Can we use sniffer software in mobile nRF connect[/quote]

No.. That's not how it works.. A sniffer works by capturing the packets send between two BLE devices.. You will need to flash the sniffer firmware on to a supported device (this has been explained in detail in the documentation) and connect to Wireshark to see the captured signals. Please do refer the documentation.

Regards,

Swathy

RE: BLE Sniffer with nRF52840

Bhagyashree badiger — Fri, 21 Mar 2025 05:50:10 GMT

Can we use sniffer software in mobile nRF connect

RE: BLE Sniffer with nRF52840

Bhagyashree badiger — Thu, 20 Mar 2025 17:32:41 GMT

Thank You Swathy for the reply.

Can we use Sniffer for nRFDK to nRF Soc?

Best Regards,

Bhagyashree Badiger

RE: BLE Sniffer with nRF52840

SwRa — Thu, 20 Mar 2025 12:53:31 GMT

HI Bhagyashree,

It is not possible to use a single DK as a sniffer and a central/peripheral simultaneously.. When you're using the nRF52840DK as a sniffer with Wireshark, it's programmed with the nRF Sniffer firmware. See here: https://docs.nordicsemi.com/bundle/nrfutil/page/nrfutil-ble-sniffer/guides/programming_firmware.html This firmware is specifically designed to capture BLE packets between other devices, not to act as a BLE peripheral or central device itself. This is why you can't simultaneously connect to it with nRF Connect Mobile.

So in addition to a DK (DK1) that is being connected to the nRF Connect application which already has an application running on it, you will need a separate DK (DK2) which is programmed with the sniffer firmware. Place DK2 between DK1 and the mobile (the communicating devices) to capture the sniffer trace. You can read more about nRF sniffer in detail here: https://docs.nordicsemi.com/bundle/nrfutil/page/nrfutil-ble-sniffer/guides/requirements.html

Best Regards,

Swathy