Date: Thu, 1 May 2008 18:49:30 -0500 From: "Engineering" <ee@athyriogames.com> To: <freebsd-usb@freebsd.org> Subject: RE: Intro and question about High speed Isochronous Message-ID: <JIEGIIKNNGNDIBENLEAOMELPDNAA.ee@athyriogames.com> In-Reply-To: <481A1B4E.6010105@system.pl>
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> -----Original Message----- > From: owner-freebsd-usb@freebsd.org > > I started using ugen and got most of the code ported. Then I > > found out ehci does not support isochronous! > > How did you try to use this? It fails with EIO when I open ugen0.1 - which is the isochronous endpoint. If I go through a hub to force it to be USB 1.0, it works fine. Looking throught the ehci source seems to confirm that it just doesn't handles isochronous, and throws an error > > > Is there a new USB stack coming with high-speed iso? Will > it work with > > ugen? If not ugen, how do I get at it? > > My advice would be not to use libusb, just prepare your own kernel > module. In most cases it is much simpler than ugen. Have a look at > simple drivers like uscanner to see how to start with the USB > kernel driver. Thanks. I will take a look at uscanner, but if it uses ehci I will be in the same boat. > > > Is anyone working on a UVC driver? I don't need all the > features, just to > > get at the stream data. > > You might want to have a look at Luigi Rizzo's work on video: > > http://info.iet.unipi.it/~luigi/FreeBSD/usb-cameras.html Yes, I've been looking at that with a lot of interest. Unfortunately, my cameras are not supported, and I'm looking to use UVC cameras, as I believe this will be the standard soon. Thanks Sam
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