NAME¶comedi_data_write - write single sample to channel
int comedi_data_write(comedi_t * device, unsigned int subdevice, unsigned int channel, unsigned int range, unsigned int aref, lsampl_t data);
DESCRIPTION¶Writes a single sample on the channel that is specified by the Comedi device device, the subdevice subdevice, and the channel channel. If appropriate, the device is configured to use range specification range and analog reference type aref. Analog reference types that are not supported by the device are silently ignored.
The function comedi_data_write writes the data value specified by the parameter data to the specified channel.
RETURN VALUE¶On success, comedi_data_write returns 1 (the number of samples written). If there is an error, -1 is returned.
AUTHORS¶David Schleef <firstname.lastname@example.org>
Frank Mori Hess <email@example.com>
Herman Bruyninckx <Herman.Bruyninckx@mech.kuleuven.ac.be>
Bernd Porr <firstname.lastname@example.org>
Ian Abbott <email@example.com>
Éric Piel <firstname.lastname@example.org>
COPYRIGHT¶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.