NAME

       comedi_dio_config - change input/output properties of channel

SYNOPSIS

       #include <comedilib.h>

       int comedi_dio_config(comedi_t * device, unsigned int subdevice, unsigned int channel,
                             unsigned int direction);

DESCRIPTION

       The function comedi_dio_config configures individual channels in a digital I/O subdevice
       to be either input or output, depending on the value of direction. Valid directions are
       COMEDI_INPUT or COMEDI_OUTPUT.

       Depending on the characteristics of the hardware device, multiple channels might be
       grouped together in hardware when configuring the input/output direction. In this case, a
       single call to comedi_dio_config for any channel in the group will affect the entire
       group.

RETURN VALUE

       If successful, 0 is returned, otherwise -1.

AUTHORS

       David Schleef <ds@schleef.org>
           Author.

       Frank Mori Hess <fmhess@users.sourceforge.net>
           Author.

       Herman Bruyninckx <Herman.Bruyninckx@mech.kuleuven.ac.be>
           Author.

       Bernd Porr <tech@linux-usb-daq.co.uk>
           Author.

       Ian Abbott <abbotti@mev.co.uk>
           Author.

       Éric Piel <piel@delmic.com>
           Author.

COPYRIGHT

       Copyright © 1998-2003 David Schleef
       Copyright © 2001-2003, 2005, 2008 Frank Mori Hess
       Copyright © 2002-2003 Herman Bruyninckx
       Copyright © 2012 Bernd Porr
       Copyright © 2012 Ian Abbott
       Copyright © 2012 Éric Piel

       This document is part of Comedilib. In the context of this document, the term "source
       code" as defined by the license is interpreted as the XML source.

       This library is free software; you can redistribute it and/or modify it under the terms of
       the GNU Lesser General Public License as published by the Free Software Foundation,
       version 2.1 of the License.

       This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
       without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
       See the GNU Lesser General Public License for more details.

       You should have received a copy of the GNU Lesser General Public License along with this
       library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
       Boston, MA 02111-1307 USA.