comedi_set_read_subdevice - set streaming input subdevice

DavidSchleef <ds@schleef.org>
           Author.

       FrankMoriHess <fmhess@users.sourceforge.net>
           Author.

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

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

       IanAbbott <abbotti@mev.co.uk>
           Author.

       ÉricPiel <piel@delmic.com>
           Author.

       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, 2015 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.

Comedi                                             03/04/2025                            COMEDI_SET_READ_SUBD(3)

       The function comedi_set_read_subdevice sets subdevice as the current “read” subdevice if the subdevice
       supports streaming input commands.

       No action is performed if subdevice is already the current “read” subdevice.

       Changes are local to the openfiledescription for this device and have no effect on other open file
       descriptions for the underlying device node.

       comedi_set_read_subdevice - set streaming input subdevice

       On success, 0 is returned. On failure, -1 is returned.

       Works for Linux "in-tree" Comedi since kernel version 3.19.

#include<comedilib.h>intcomedi_set_read_subdevice(comedi_t*device,unsignedintsubdevice);