OSDev.org

Because my OS runs on a USB drive, I want to be able to read from it. So I started looking for info about USB driver programming. Practically the only thing I could find was the wiki page, which referenced to some design documents. Scrolling through the large documents searching for clues on how to start communicating with the device, I find myself looking for a needle in a haystack. I don't know where to start.

Aren't there any better documents (I am talking about the OHCI doc)?

If you ever want to develop your OS, you need to learn how to search the web
USB 3.0 spec
USB 2.0 spec
OHCI
UHCI
EHCI

The ULPI link seems to be down but I'm sure you'll find it if you just Google.

Check out usb4dos at http://freenet-homepage.de/dieterp/
Should be helpful

Also try using the forum search http://forum.osdev.org/viewtopic.php?f= ... ex#p139910
The code is to run on DexOS, but you could just as eay run it from your own.
Also this should help http://www.usbmadesimple.co.uk/index.html

Thanks. I understand more of what I have to do. Now I'm trying to implement a mass storage device class. There are some nice documents here.

I'm still having some trouble with sending packages, because I don't know what value I should use for SYNC. I'm trying to read the device descriptor.


edit: I think I got that wrong. To read that data I should make an entry in the frame list that contains a TD with the package in it.