From: "Herbert Pötzl" <herbert@13thfloor.at>
To: Marc Giger <gigerstyle@gmx.ch>
Cc: Pavel Machek <pavel@suse.cz>, John Bradford <john@grabjohn.com>,
linux-kernel@vger.kernel.org, pgw99@doc.ic.ac.uk
Subject: Re: PATCH : LEDs - possibly the most pointless kernel subsystem ever
Date: Wed, 30 Jul 2003 21:16:59 +0200 [thread overview]
Message-ID: <20030730191658.GD7260@www.13thfloor.at> (raw)
In-Reply-To: <20030730210618.5af8e5bb.gigerstyle@gmx.ch>
On Wed, Jul 30, 2003 at 09:06:18PM +0200, Marc Giger wrote:
> On Wed, 30 Jul 2003 20:56:59 +0200
> Herbert Pötzl <herbert@13thfloor.at> 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
next prev parent reply other threads:[~2003-07-30 19:16 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-30 16:08 PATCH : LEDs - possibly the most pointless kernel subsystem ever John Bradford
2003-07-30 17:44 ` Pavel Machek
2003-07-30 18:50 ` Marc Giger
2003-07-30 19:05 ` Herbert Pötzl
2003-07-30 22:22 ` Brian McGroarty
2003-07-30 18:56 ` Herbert Pötzl
2003-07-30 19:02 ` Pavel Machek
2003-07-30 19:06 ` Marc Giger
2003-07-30 19:16 ` Herbert Pötzl [this message]
2003-07-31 8:31 ` jw schultz
-- strict thread matches above, loose matches on Subject: below --
2003-07-30 18:50 John Bradford
2003-07-30 15:50 John Bradford
2003-07-30 12:27 "Andrey Borzenkov"
2003-07-29 20:38 John Bradford
2003-07-29 20:37 ` Andries Brouwer
2003-07-29 21:34 ` Philip Graham Willoughby
2003-07-29 20:40 ` Randolph Bentson
2003-07-29 21:15 ` Ryan Flowers
2003-07-29 20:43 ` Eli Carter
2003-07-30 6:09 ` Tomas Szepe
2003-07-30 6:37 ` Helge Deller
2003-07-29 19:15 John Bradford
2003-07-29 19:51 ` Tim Hockin
2003-07-29 20:09 ` Joel Jaeggli
2003-07-29 21:20 ` Kent Borg
2003-07-29 21:44 ` Philip Graham Willoughby
2003-07-30 21:44 ` Mike Jagdis
2003-07-30 12:15 ` Pavel Machek
2003-07-29 15:17 Philip Graham Willoughby
2003-07-29 18:00 ` Pavel Machek
2003-07-30 11:45 ` Jamey Hicks
2003-07-30 12:27 ` Pavel Machek
2003-07-30 6:36 ` CaT
2003-07-30 13:00 ` Andries Brouwer
2003-07-30 13:20 ` CaT
2003-07-30 23:28 ` Greg KH
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