Date: Thu, 08 Jan 2004 08:43:01 +0100 From: Martin <nakal@web.de> To: Jay Cornwall <jay@evilrealms.net> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: [PATCH] Fix for USB ugen panics Message-ID: <1073547780.692.38.camel@klotz.local> In-Reply-To: <3FFCC12A.7030609@evilrealms.net> References: <3FFB4150.2020601@evilrealms.net> <1073497253.715.27.camel@klotz.local> <3FFCC12A.7030609@evilrealms.net>
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On Thu, 2004-01-08 at 03:32, Jay Cornwall wrote: > I think you're on the right lines, but all that's going wrong is setting the > device configuration to zero. You need to look up the technical specs for your > USB webcam to see which configurations are available, and what interfaces and > endpoints are available in each configuration. I have them here. I've got a document called w9968cf-spec.pdf. You can get it from the www.winbond.com site: http://www.winbond.com/e-winbondhtm/partner/PDFresult.asp?Pname=173 (at least, it SHOULD be there, I cannot access it somehow) or from a sourceforge-project: http://sourceforge.net/project/showfiles.php?group_id=10775&release_id=43893 (The specs are really bad and don't tell how to get images from the webcam.) > If it says that configuration zero is an > acceptable configuration, then I'm > confused. :) In section 7.5.3 "Bandwidth Management" it says something about "Set Configuration" request and the zero-setting. Maybe I misunderstood the paragraph. Perhaps you can tell me a second thing. In section 7.5.2 they say there are 0-length packets used for frame-sync. I have never seen a 0-length packet coming from the interface, but some packets are (irregulary) shorter. Is the FreeBSD ugen-driver supporting 0-length packets? Martin
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