1COMEDI_COMMAND(3)              Comedi reference              COMEDI_COMMAND(3)
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NAME

6       comedi_command - start streaming input/output
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SYNOPSIS

9       #include <comedilib.h>
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11       int comedi_command(comedi_t * device, comedi_cmd * command);
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DESCRIPTION

14       The function comedi_command starts a streaming input or output. The
15       command structure pointed to by command specifies settings for the
16       acquisition. The command must be able to pass comedi_command_test with
17       a return value of 0, or comedi_command will fail. For input subdevices,
18       sample values are read using the function read on the device file
19       descriptor. For output subdevices, sample values are written using the
20       function write.
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RETURN VALUE

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

26       David Schleef <ds@schleef.org>
27           Author.
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29       Frank Mori Hess <fmhess@users.sourceforge.net>
30           Author.
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32       Herman Bruyninckx <Herman.Bruyninckx@mech.kuleuven.ac.be>
33           Author.
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35       Bernd Porr <tech@linux-usb-daq.co.uk>
36           Author.
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38       Ian Abbott <abbotti@mev.co.uk>
39           Author.
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41       Éric Piel <piel@delmic.com>
42           Author.
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45       Copyright © 1998-2003 David Schleef
46       Copyright © 2001-2003, 2005, 2008 Frank Mori Hess
47       Copyright © 2002-2003 Herman Bruyninckx
48       Copyright © 2012 Bernd Porr
49       Copyright © 2012 Ian Abbott
50       Copyright © 2012, 2015 Éric Piel
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52       This document is part of Comedilib. In the context of this document,
53       the term "source code" as defined by the license is interpreted as the
54       XML source.
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56       This library is free software; you can redistribute it and/or modify it
57       under the terms of the GNU Lesser General Public License as published
58       by the Free Software Foundation, version 2.1 of the License.
59
60       This library is distributed in the hope that it will be useful, but
61       WITHOUT ANY WARRANTY; without even the implied warranty of
62       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
63       General Public License for more details.
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65       You should have received a copy of the GNU Lesser General Public
66       License along with this library; if not, write to the Free Software
67       Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
68       USA.
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73Comedi                            05/11/2017                 COMEDI_COMMAND(3)
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