[$] The USB debugging arsenal

At the 2019EmbeddedLinux Conference North America, which was held in San Diego in August,Krzysztof Opasiak gave a presentation on demystifying the ways to monitor-andeven change-USB traffic on a Linux system. He started with the basics ofthe USB protocol and worked up into software and hardware tools toobserve, modify, and fuzz the messages that get sent. Those tools are part of thearsenal that is available to those interested in looking deeply into USB.