From owner-freebsd-usb@FreeBSD.ORG  Fri Aug 27 07:00:46 2010
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From: Hans Petter Selasky <hselasky@c2i.net>
To: Jim Bryant <kc5vdj.freebsd@gmail.com>
Date: Fri, 27 Aug 2010 08:56:43 +0200
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Cc: freebsd-usb@freebsd.org
Subject: Re: writing usb drivers under 8.x
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On Thursday 26 August 2010 23:29:35 Jim Bryant wrote:
> Actually, all of my test programs (for testing my reverse engineering
> efforts) have been done in libusb-1.0.
> 
> I would actually like to write kernel-level drivers though for these.
> 

Then you should look at existing drivers in /sys/dev/usb/xxx, which match your 
device class. What kind of API do you want to userspace? tty-device, character 
device?

--HPS