1COMEDI_DO_INSN(3)              Comedi reference              COMEDI_DO_INSN(3)
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NAME

6       comedi_do_insn - perform instruction
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SYNOPSIS

9       #include <comedilib.h>
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11       int comedi_do_insn(comedi_t * device, comedi_insn * instruction);
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DESCRIPTION

14       The function comedi_do_insn performs a single instruction.
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RETURN VALUE

17       If successful, returns a non-negative number. For the case of INSN_READ
18       or INSN_WRITE instructions, comedi_do_insn returns the number of
19       samples read or written, which may be less than the number requested.
20       If there is an error, -1 is returned.
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AUTHORS

23       David Schleef <ds@schleef.org>
24           Author.
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26       Frank Mori Hess <fmhess@users.sourceforge.net>
27           Author.
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29       Herman Bruyninckx <Herman.Bruyninckx@mech.kuleuven.ac.be>
30           Author.
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32       Bernd Porr <tech@linux-usb-daq.co.uk>
33           Author.
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35       Ian Abbott <abbotti@mev.co.uk>
36           Author.
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38       Éric Piel <piel@delmic.com>
39           Author.
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42       Copyright © 1998-2003 David Schleef
43       Copyright © 2001-2003, 2005, 2008 Frank Mori Hess
44       Copyright © 2002-2003 Herman Bruyninckx
45       Copyright © 2012 Bernd Porr
46       Copyright © 2012 Ian Abbott
47       Copyright © 2012, 2015 Éric Piel
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49       This document is part of Comedilib. In the context of this document,
50       the term "source code" as defined by the license is interpreted as the
51       XML source.
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53       This library is free software; you can redistribute it and/or modify it
54       under the terms of the GNU Lesser General Public License as published
55       by the Free Software Foundation, version 2.1 of the License.
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57       This library is distributed in the hope that it will be useful, but
58       WITHOUT ANY WARRANTY; without even the implied warranty of
59       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
60       General Public License for more details.
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62       You should have received a copy of the GNU Lesser General Public
63       License along with this library; if not, write to the Free Software
64       Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
65       USA.
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70Comedi                            05/11/2017                 COMEDI_DO_INSN(3)
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