In theory, writing a Linux device driver shouldn’t be that hard, but it is harder than it looks. However, using libusb, you can easily deal with USB devices from user space, which, for many purposes, ...

Day 1: I open the box to see a small USB device—no bigger than a quarter—a CD and a note from my editor, “Make this work on Linux!” “Okay”, I think, “this should be easy.” Figure 1. MARX Software ...