This is a python 3 ready version of https://sourceforge.net/projects/ttyusbspy (Original authors are unknown at least to me (I couldn't find their online accounts)).
ttyUSBSpy is a tool showing usbmon pcap captures of communications with Prolific PL2303* USB-serial converters.
RUNNING:
- capture USB communications with usbmon.
- just run
python3 -m ttyUSBSpyand you will be able to load your capture there. - to activate capture mode run
sudo python3 -m ttyUSBSpy
USAGE:
as a practical approach, you would probably:
1. capture data with capture mode or using the [Wireshark]() and capturing the USB data
2. Charge captured file, ttyUSBSpy decodes the file and shows data and signals.