On Fri, 22 Dec 2006, Sarah Bailey wrote: > Can devices have control endpoints other than endpoint zero?
Yes, they can. In theory, anyway. I don't know of any devices that do, and system support for control endpoints other than ep0 is pretty spotty. For instance, the Linux USB stack doesn't fully support them. > The USB > specification says that direction is ignored for control endpoints, so > non-default control endpoints must support both directions, correct? Yes. More accurately, a control endpoint has to _use_ both directions (not _ignore_ both) when transferring data, so of course it must support both directions. Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
