From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "Kurt Häusler" <Kurt@fub-group.de>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Accessing serial port from kernel module
Date: 23 Jul 2003 15:25:43 +0100 [thread overview]
Message-ID: <1058970342.5520.74.camel@dhcp22.swansea.linux.org.uk> (raw)
In-Reply-To: <8FB92279C69C2944B325B4BD227401790156B8@nt-server.danziger.local>
On Mer, 2003-07-23 at 15:15, Kurt Häusler wrote:
> What is the preferred way in Linux for my module to open the serial port device such as /dev/ttyS1.
Make your driver a line discipline is the normal approach in this case
(ok to be fair putting it all in user space is the normal case). Take a
look at slip.c to see how slip sits above terminal interfaces.
The user space only approach is to use pty/tty pairs as things like
xterm do. This gives you a "terminal/serial" device the other end of
which is your user space program which can do the conversions it wants
then talk to a real serial port
next prev parent reply other threads:[~2003-07-23 14:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-23 14:15 Kurt Häusler
2003-07-23 14:25 ` Alan Cox [this message]
2003-07-24 8:26 ` Nick Craig-Wood
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