where to get info to write basic usb driver for own device?

[Rita Lin]

I would read up some code in /dev/usb and see how others did theirs.
I would also read the Dynamic Kernel Linker by Andrew Reiter
http://www.daemonnews.org/200010/blueprints.html, and the white paper by zep
software
http://www.zepsoftware.com/whitepapers/bsd_devtree.php.

That's how I wrote my first USB driver.

Rita

----- Original Message -----
From: Zera Holladay <zera at m-net.arbornet.org>
To: <freebsd-hackers at freebsd.org>
Sent: Thursday, July 08, 2004 1:11 PM
Subject: Re: where to get info to write basic usb driver for own device?


> This may go without saying, but have you read Chapter 22 of the FreeBSD
> Developers' Handbook?  I have not read intro(4) extensively but that is
> probably a good starting place, if you are completely in the dark.
>
> -Zera Holladay
>
>
>
>
> On Sun, 4 Jul 2004, Avleen Vig wrote:
>
> > On Sun, Jul 04, 2004 at 12:53:39PM +0000, idownes at slingshot.co.nz wrote:
> > > 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.
> >
> > I am actually in a similar situation.
> > I know some C, and want to write a device driver for a USB device (web
> > cam), but I have no idea where to start.
> > I've searched for a "beginners guide to writing device drivers" but
> > failed miserably :-(
> >
> > --
> > Avleen Vig
> > Systems Administrator
> > Personal: www.silverwraith.com
> > EFnet:    irc.mindspring.com (Earthlink user access only)
> > _______________________________________________
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> >
>
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