1COMEDI_GET_BUFFER_WR(3) Comedi reference COMEDI_GET_BUFFER_WR(3)
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6 comedi_get_buffer_write_count - streaming buffer write count
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9 #include <comedilib.h>
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11 int comedi_get_buffer_write_count(comedi_t * device,
12 unsigned int subdevice,
13 unsigned int * write_count);
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16 The function comedi_get_buffer_write_count is used on a subdevice that
17 has a Comedi command in progress to get the number of bytes that have
18 been written to the buffer, modulo UINT_MAX + 1. The value is stored in
19 *write_count.
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22 On success, 0 is returned. On failure, -1 is returned.
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25 David Schleef <ds@schleef.org>
26 Author.
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28 Frank Mori Hess <fmhess@users.sourceforge.net>
29 Author.
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31 Herman Bruyninckx <Herman.Bruyninckx@mech.kuleuven.ac.be>
32 Author.
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34 Bernd Porr <tech@linux-usb-daq.co.uk>
35 Author.
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37 Ian Abbott <abbotti@mev.co.uk>
38 Author.
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40 Éric Piel <piel@delmic.com>
41 Author.
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44 Copyright © 1998-2003 David Schleef
45 Copyright © 2001-2003, 2005, 2008 Frank Mori Hess
46 Copyright © 2002-2003 Herman Bruyninckx
47 Copyright © 2012 Bernd Porr
48 Copyright © 2012 Ian Abbott
49 Copyright © 2012, 2015 Éric Piel
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51 This document is part of Comedilib. In the context of this document,
52 the term "source code" as defined by the license is interpreted as the
53 XML source.
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55 This library is free software; you can redistribute it and/or modify it
56 under the terms of the GNU Lesser General Public License as published
57 by the Free Software Foundation, version 2.1 of the License.
58
59 This library is distributed in the hope that it will be useful, but
60 WITHOUT ANY WARRANTY; without even the implied warranty of
61 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
62 General Public License for more details.
63
64 You should have received a copy of the GNU Lesser General Public
65 License along with this library; if not, write to the Free Software
66 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
67 USA.
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72Comedi 05/11/2017 COMEDI_GET_BUFFER_WR(3)