From owner-freebsd-hackers@FreeBSD.ORG  Sun Jul  4 12:56:25 2004
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 2E10016A4CE
	for <freebsd-hackers@freebsd.org>;
	Sun,  4 Jul 2004 12:56:25 +0000 (GMT)
Received: from mailsrv2.tranzpeer.net (mailsrv2.tranzpeer.net
	[202.180.66.208])
	by mx1.FreeBSD.org (Postfix) with ESMTP id CB79E43D31
	for <freebsd-hackers@freebsd.org>;
	Sun,  4 Jul 2004 12:56:24 +0000 (GMT)
	(envelope-from idownes@slingshot.co.nz)
Received: from websrv1.tranzpeer.net ([202.180.66.211] helo=Debug)
	by mailsrv2.tranzpeer.net with smtp (Exim 4.12)
	id 1Bh6Xf-0005UW-02
	for freebsd-hackers@freebsd.org; Mon, 05 Jul 2004 00:56:23 +1200
To: freebsd-hackers@freebsd.org
From: <idownes@slingshot.co.nz>
Date: Sun, 4 Jul 2004 12:53:39 GMT
X-Posting-IP: 202.180.104.50
X-Mailer: Endymion MailMan Professional Edition v3.2.9
Message-Id: <E1Bh6Xf-0005UW-02@mailsrv2.tranzpeer.net>
Subject: where to get info to write basic usb driver for own device?
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 04 Jul 2004 12:56:25 -0000

Hi all,
As part of my uni honours project I need to write a basic USB driver for a 
device I am building.  I need to talk to a Texas Instruments DSP (C5509) 
which has on chip USB (2.0 compliant, full speed).  TI supply a library 
for the DSP side of the USB but I need to write a basic program to 
retrieve data from it, nothing fancy at all.  I have full control over the 
software on the DSP.
There is a basic generic Windows driver I could use (theyscon.de) but I 
don't really want to do it under Windows - instead I'd much rather do it 
with FreeBSD.  

So what I guess what I am asking is how hard would this be? (I have a 
reasonable knowledge of C and Java and have been using FreeBSD for a 
couple of years but have never written a device driver (for any OS))  Do I 
actually need to write a driver or can I use something already existing?  
Where would I get information on how to do this?  So far I've been looking 
at the existing drivers; ugen, ufm etc., the programmers handbook and am 
starting to look at libusb...?
Sorry for the long message.  Any pointers etc. would be greatly 
appreciated.
Thanks
Ian