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// Copyright (C) 2013 Stefan Mahr <dac922@gmx.de>
// Copyright (C) 2012 Andrius Sutas <andrius.sutas@gmail.com>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, see <http://www.gnu.org/licenses/>.
#include <octave/oct.h>
#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif
#ifdef BUILD_GPIB
#include <errno.h>
#include "gpib_class.h"
static bool type_loaded = false;
#endif
DEFUN_DLD (__gpib_spoll__, args, nargout,
"-*- texinfo -*-\n\
@deftypefn {Loadable Function} {@var{sb} = } __gpib_spoll__ (@var{gpib})\n \
\n\
serial poll gpib interface.\n \
\n\
@var{gpib} - instance of @var{octave_gpib} class.@*\
\n\
Upon successful completion, gpib_spoll() shall return the status byte @var{sb}.\n \
@end deftypefn")
{
#ifndef BUILD_GPIB
error("gpib: Your system doesn't support the GPIB interface");
return octave_value();
#else
if (!type_loaded)
{
octave_gpib::register_type();
type_loaded = true;
}
if (args.length() != 1 || args(0).type_id() != octave_gpib::static_type_id())
{
print_usage();
return octave_value(-1);
}
octave_gpib* gpib = NULL;
int retval;
const octave_base_value& rep = args(0).get_rep();
gpib = &((octave_gpib &)rep);
char rqs;
retval = gpib->spoll(&rqs);
if (retval == -1)
return octave_value();
return octave_value(rqs);
#endif
}