Date: Wed, 23 Jul 2008 00:52:36 +0200 (CEST)
From: Jan Engelhardt <jengelh@medozas.de>
To: Kevin Holland <khollan@daktronics.com>
cc: linux-kernel@vger.kernel.org
Subject: Re: map keyboard to stdin
In-Reply-To: <1216760127.6242.18.camel@kevin-laptop>
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References: <1216760127.6242.18.camel@kevin-laptop>
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On Tuesday 2008-07-22 22:55, Kevin Holland wrote:

>Hi all,
>I have an embedded Linux board that uses 2.6.21, the console is output
>the serial port.  How can I set it up so a USB keyboard will be accepted
>as input as well as anything received from the serial port and it will
>be echoed to the output of the serial port as well.  Basically I want to
>issue commands either through a terminal program to the embedded board
>or a USB keyboard that is connected to the board, but I still want to
>see what was typed on the keyboard out the serial terminal. I have
>enabled USB HID support in the Kernel as well.

Try booting with  console=tty0 console=ttyS0
I am not sure whether this will accept input from both (that's for you 
to test), though it definitely outputs to both.
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