mavsniff

Capture and replay MAVLink packets from your drone or GCS.

You can read from a serial line (ttyS0/COMx) or from network (UDP/TCP). Mavsniff stores packets in pcapng format so you can analyse them with Wireshark.

Instalation

$ pip install mavsniff

Mavsniff is distributed via PYPI and an entrypoint mavsniff should be available in your $PATH after installation.

Usage

$ mavsniff capture --device /dev/ttyS0 --file recording.pcapng
$ mavsniff replay --file recording.pcapng --device udpout://localhost:5467 

Example of available devices:

• -d /dev/ttyS0 - standard serial port on UNIX systems
• -d COMx - e.g. COM1 or COM4 - standard serial ports on Windows systems
• -d udpin://<host>:<port> - receive packets via UDP (only for capture command)
• -d udpout://<host>:<port> - send packets via UDP (only for replay command)
• -d loop:// - for local testing (do not send more than 100 packets)

Consult more device schemas on pyserial documenation page.

Caviats

When using a loop:// device please note that there is a finite buffer size (usually 4096 bytes). Do not send larger files there withou reading from the buffer in parallel.