Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S273323AbTG3TQ5 (ORCPT ); Wed, 30 Jul 2003 15:16:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S273324AbTG3TQ5 (ORCPT ); Wed, 30 Jul 2003 15:16:57 -0400 Received: from www.13thfloor.at ([212.16.59.250]:38570 "EHLO www.13thfloor.at") by vger.kernel.org with ESMTP id S273323AbTG3TQw (ORCPT ); Wed, 30 Jul 2003 15:16:52 -0400 Date: Wed, 30 Jul 2003 21:16:59 +0200 From: Herbert =?iso-8859-1?Q?P=F6tzl?= To: Marc Giger Cc: Pavel Machek , John Bradford , linux-kernel@vger.kernel.org, pgw99@doc.ic.ac.uk Subject: Re: PATCH : LEDs - possibly the most pointless kernel subsystem ever Message-ID: <20030730191658.GD7260@www.13thfloor.at> Reply-To: herbert@13thfloor.at Mail-Followup-To: Marc Giger , Pavel Machek , John Bradford , linux-kernel@vger.kernel.org, pgw99@doc.ic.ac.uk References: <200307301608.h6UG8YQJ000339@81-2-122-30.bradfords.org.uk> <20030730174457.GI10276@atrey.karlin.mff.cuni.cz> <20030730185659.GA7260@www.13thfloor.at> <20030730210618.5af8e5bb.gigerstyle@gmx.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20030730210618.5af8e5bb.gigerstyle@gmx.ch> User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 895 Lines: 27 On Wed, Jul 30, 2003 at 09:06:18PM +0200, Marc Giger wrote: > On Wed, 30 Jul 2003 20:56:59 +0200 > Herbert P?tzl wrote: > > On Wed, Jul 30, 2003 at 07:44:57PM +0200, Pavel Machek wrote: [incredible useful info zapped here] > > anyway, parport should be short circuit safe, so > > the worst what could happen is, that the leds are > > not working ;) ... > > Are you sure?? I thought this is true for serial-port... I said 'should', for serial it would have been 'must' ;) http://www.amontec.com/ieee1284_electrical.shtml or search for the IEEE docs ... modern chips work at ~15mA/2.5V ... according to spec best, Herbert - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/