From: Jan-Benedict Glaw <jbglaw@lug-owl.de>
To: linux-kernel@vger.kernel.org
Cc: Nico Schottelius <nico-kernel@schottelius.org>
Subject: Re: Parallel Port: Settings PINs on?
Date: Wed, 1 Jun 2005 12:12:22 +0200 [thread overview]
Message-ID: <20050601101222.GO2417@lug-owl.de> (raw)
In-Reply-To: <20050601100150.GB27717@schottelius.org>
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On Wed, 2005-06-01 12:01:50 +0200, Nico Schottelius <nico-kernel@schottelius.org> wrote:
> Is it possible to select (in userspace) which pins
> should be enabled or do I have to write a kernel driver
> for that?
There's already a driver available for exactly this purpose: ppdev.
At http://lug-owl.de/~jbglaw/software/steckdose/steckdose.c is a program
I wrote for controlling a shift register (serial in, parallel out) with
relays attached (to switch on/off computers or to reset them). This
should help you for a start. (Basically, open/claim the port and set the
bits of the DATA port via an ioctl())
MfG, JBG
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prev parent reply other threads:[~2005-06-01 10:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-01 10:01 Nico Schottelius
2005-06-01 10:10 ` DervishD
2005-06-01 10:13 ` Jan-Benedict Glaw
2005-06-01 10:12 ` Jan-Benedict Glaw [this message]
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