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A BLE sniffer can be very handy. 3 primary use cases come to mind: Debug problems with BLE connections Reverse engineer a BLE device Last but not least, as a way to learn about how BLE works and understand how data gets transferred between Central and Peripheral In the previous blog post and video on BLE sniffers we went over how to use the TI CC2540 BLE sniffer to detect advertisement data. In this video we’ll go over how to use the same BLE sniffer to capture and follow connections between a Central device and Peripheral device. To illustrate the use…
In the previous blog post, we went over the different BLE sniffers available in the market and compared the pros and cons of each. In this video below we walk through a live demo of capturing BLE advertisements using the TI CC2540 USB Dongle BLE sniffer. We look at the different aspects of the captured advertisement data and understand each part. Bluetooth low energy Advertisement Data Packet number: the sequence of packets received by the sniffer. Timestamp: (starting from 0) and the time difference since the previous packet was received. Channel number: (depends on what channel you set in the…
How to use a Bluetooth Low Energy sniffer without pulling your hair out! While working on a client’s project it became necessary to use a Bluetooth Low Energy sniffer to debug some weird behavior happening with the data transfers between the master and slave device. I had read quite a bit about BLE sniffing before and talked to a few people in the industry to get their feedback on the different options out there, but I hadn’t actually done much with one until recently. The purpose of this blog post to be the first of a series covering the topic of Bluetooth Low Energy…
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