USB operation

[Lambros]

Hey, there everyone.
Can anyone give a link to a thread that explains the function thoroughly of a USB memory drive when it communicates with a PC?
Thanks

[ve7xen]

The USB spec is freely available here: http://www.usb.org/developers/docs/usb_20_110512.zip

It's highly non-trivial, especially if you want to think about partitioning, filesystems and any other layers on top of USB - but even USB itself is a pretty complicated system.

USB in a nutshell is the best overview of the bus I've seen, but it barely scratches the surface of how an actual device functions.

[Lambros]

Thanks

[Smokey]

Check out Travis Goodspeed's projects.  His current one is emulating flash drives in software using a sort of USB spoofing device he built.  His stuff is really interesting.  The youtube videos of his conference talks are great too.

http://travisgoodspeed.blogspot.com/

[Icarus]

http://www.amazon.com/USB-Mass-Storage-Designing-Programming/dp/1931448043
You can also find pdf of that book.