snaums1d ago
Julia Evans
i've always been curious about how to write a Linux USB device driver and this blog post looks like a great intro: https://crescentro.se/posts/writing-drivers/
Writing a basic Linux device driver when you know nothing about Linux drivers or USB

Jun 26 at 7:08pmWeb
Show threadity [unit X-69]1d ago

@b0rk I spent a lot of time breaking Linux USB device drivers

Maybe I should write one too 

Show threadChristoffer S.1d ago

@b0rk I have always been curious about linux usb devices drivers and while I have no intention of doing it just now... the article was so incredibly human ... that I had to read it all.

Now I have two problems, writing a device driver and learning #rustlang

Grrr... but thanks, great share.

Show threadDavid Cantrell 🏏1d ago
@b0rk ooh, interesting! Last time I wrote a device driver for Linux was Lo Those Many Decades Ago so I'm sure everything has changed, and USB didn't even exist back then. I guess debugging is either gonna be a lot harder than sticking oscilloscope probes on the bus, like the last driver I wrote, or a lot easier 
Show threadBenjamin Geer1d ago
@b0rk I would be curious to know the answer to a question that’s been in the back of my mind for years: does device driver code have to be a horrible mess of endless switch-case statements and weird edge cases? A long time ago I had a look at some Linux device drivers and I felt really sorry for the people who wrote them. 😳
Show threadwaldi1d ago
@b0rk Once in the past I wrote a fake USB host driver for April Fool's. Including pictures where to solder the wires. Yes, the hardware had support for USB, but the pins where all used for other stuff.
Show threaddoragasu17h ago
@b0rk It's an interesting article, but I would like to clarify it talks about *userspace* drivers, not about *kernel* drivers. I am highlighting this since when I think about *device drivers* I am thinking about kernel development by default, and that's not the case here.
Show threadBruno Arine9h ago
@b0rk Super well-written, not to mention the page aesthetics.