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It was when updating the Parameter tab of the client to handle persistent parameters, and to use a sidebar for extra documentation and value control.

You can easily inspect what the library receives or sends and make sure it matches what your code indented.īut it can also be useful when doing client type work! We recently located the source of a bug in the Crazyflie client with the use of this Wireshark plugin. This functionality is, we think, most useful for when developing new functionality in the Crazyflie firmware, or in the library. The dissector knows about the different types of CRTP ports and channels and knows how to dissect an high level set-point, as seen by the image above.

Wireshark view of filtering out packets on CRTP port 8 Which makes following what goes on with high level commands a bit easier. This means that from a log file that contain 44393 packets we now only display 9. In the below image we have set a filter to view only packets that are received or sent on the CRTP port 8, which is the port for the High level commander. On top of that you get powerful filtering tools. Selecting a packet will give you the information that the dissector has managed to deduce as well as how the packet looked on the wire. You will see the timestamps of when they arrived. Wireshark gives you a graphical interface where you can view all the packets in a PCAP file. When we put this two things together it turns into a pretty cool way of debugging what goes on between your computer and the Crazyflie! What does it look like? And we also created an initial version of a dissector plugin, written in the programming language LUA. We generate this log in the special PCAP format that Wireshark expects. This is the (packet based) protocol that we use to communicate with the Crazyflie via radio and USB. But! Wireshark also allows you to write your own packet dissector plugin, this means that you can register some code to make Wireshark handle your custom packet based protocol.įor the latest release of the Crazyflie Python Library we added support for generating a log of the Crazy Real Time Protocol (CRTP) packets the library sends and receives.

Most often Wireshark is used for network based protocols like TCP and UDP, to try to figure out what is happening with your networking code. It makes analyzing what is going on with packet based protocols easier. It is used for network troubleshooting, analysis, communications protocol development and education. Wireshark is a free and open-source packet analyzer.