OpenUSB for FreeBSD?

[Xiaofan Chen]

On 11/12/07, Henrik Brix Andersen <brix at freebsd.org> wrote:
> > Is it possible for some people here to implement a backend
> > (based on ugen?) for FreeBSD?
>
> Interesting - definitely something I will take a look at. Thank you
> for the pointer.
>
> > Or maybe at least improve the current libusb-0.1.x implemenation
> > for FreeBSD.
>
> Yeah, I was looking at backporting some of the features from libusb
> CVS HEAD to libusb-0.1 on FreeBSD a while back and improving FreeBSD
> compatability as well for an application, I work on - but we ended up
> making FreeBSD specific work-arounds in the application instead.

Could you be a bit more specific? I know there are some missing calls
in FreeBSD. And I have problems with libusb interrupt write with the
default kernel (hangs). It is documented here.
http://lists.freebsd.org/pipermail/freebsd-usb/2007-November/004128.html
But I am not so sure if it is a libusb problem or the kernel USB driver
problem.

The HPS stack seems to be better in this aspect and I got
some libusb application ported from Linux/Windows to
FreeBSD thanks to the help from Hans.

> The current stable version of libusb certainly makes a lot to wish for
> on FreeBSD.
>
Seems to be quite true.

Regards,
Xiaofan
http://mcuee.blogspot.com