![]() ![]() We have example code using the python API that will work on any OS to log the sniffed data to a pcap file for analysis so you can use this sniffer with any OS with python. The Nordic Wireshark-streaming sniffer software is currently Windows only. You can only use this device to listen on Bluetooth Low Energy devices! It will not work on Bluetooth (classic) devices. The sniffer firmware cannot be used with the the Nordic DFU bootloader firmware, which means that if you want to reprogram this devices you must use a J-Link + SWD adapter! You cannot over-the-air reprogram it. Plug it into your development machine, fire up the special sniffer bridge SW, select the device you want to sniff, and it will fire up Wireshark for you and start pushing data in via a live stream (using Nordic's Windows software), or save to a pcap file that you can analyze with Wireshark later. In my case I am sending data every 500ms (1 empty PDU and adc value every 500ms ) Hi, I am new to forum and to Ble. ![]() You can passively capture data exchanges between two BLE devices, pushing the data into Wireshark, the open source network analysis tool, where you can visualize things on a packet level, with useful descriptors to help you make sense of the values without having to crack open the 2000 page Bluetooth 4.0 Core Specification every time. My project requires low power consumption so I only want slave to talk to master at every 1 sec (when there is change in data) and send empt PDU at interval given by slave latency. See comments for the answer - the traffic was encrypted.This Bluefruit LE Friend is programmed with a special firmware image that turns it into an easy to use Bluetooth Low Energy sniffer. I'm still not sure why this is not showing in Wireshark when capturing over the Hollong packet sniffer device. I have been able to get the ATT protocol traffic of the same packet sequence by enabling the Bluetooth HCI log on my Android device and opening up the resulting log file in Wireshark ( link). Note: Wireshark must be started via the w command to view sniffed packets without manual setup. How can I actually see what data is being sent over BLE? Sniffer can install the Wireshark plugins necessary to decode its packets. Here is a screenshot of the captured packets summary: I'm not sure how to decode these L2CAP packets - there's no "conversation" shown as it would be when following IP packets. (also, when the measurement is complete, no new packets seem to appear in Wireshark). ![]() I start the "measurement" process from the Android device, which then seems to show up as a stream of L2CAP packets in WIreshark I'm capturing packets between my Android device and my E3 Airmon air quality checker device. The details of BLE protocols, Wireshark, and the nRF Connect for Mobile app are beyond the scope of this post, but it. This just touches the surface of what you can do with the sniffer. Once you set it up, capturing and analyzing BLE traffic is easy. You will need one of these development kits or dongles to use the nRF Sniffer for Bluetooth LE: nRF52840 Dongle. This helps the developer to identify and fix issues by allowing a view of what is happening on-air. I'm using the Hollong Bluetooth 4.0/4.1/4.2 BLE Sniffer hardware to capture BLE packets which are then displayed in Wireshark. The Nordic Semiconductor nRF Sniffer for BLE is a great low-cost tool for working with BLE. The nRF Sniffer for Bluetooth LE allows near real-time display of Bluetooth LE packets. ![]()
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