Intro and question about High speed Isochronous

[Hans Petter Selasky]

On Thursday 01 May 2008, Marcin Cieslak wrote:
> Engineering wrote:
> >  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?
>
> > 	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.
>
> > 	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
>
> --Marcin

Hi,

You will need the my USB stack for HS ISOC transfers. You might be able to 
backport the HS ISOC part from my USB stack.

--HPS