NAME

       comedi_internal_trigger - generate soft trigger

SYNOPSIS

       #include <comedilib.h>

       int comedi_internal_trigger(comedi_t * device, unsigned int subdevice,
                                   unsigned int trig_num);

DESCRIPTION

       This function sends an INSN_INTTRIG instruction to a subdevice, which causes an internal
       triggering event. This event can, for example, trigger a subdevice to start an
       asynchronous command.

       The trig_num parameter is reserved for future use, and should be set to 0. It is likely it
       will be used in the future to support multiple independent internal triggers. For example,
       an asynchronous command might be specified for a subdevice with a start_src of TRIG_INT,
       and a start_arg of 5. Then the start event would only be triggered if
       comedi_internal_trigger were called on the subdevice with a trig_num equal to the same
       value of 5.

RETURN VALUE

       0 on success, -1 on error.

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.