| COMEDI_GET_CMD_GENER(3) | Comedi reference | COMEDI_GET_CMD_GENER(3) |
comedi_get_cmd_generic_timed - streaming input/output capabilities
#include <comedilib.h>
int comedi_get_cmd_generic_timed(comedi_t * device, unsigned int subdevice, comedi_cmd * command, unsigned int chanlist_len, unsigned int scan_period_ns);
The command capabilities of the subdevice indicated by the parameters device and subdevice are probed, and the results placed in the command structure pointed to by the parameter command. The command structure pointed to by command is modified to be a valid command that can be used as a parameter to comedi_command (after the command has additionally been assigned a valid chanlist array). The command measures scans consisting of chanlist_len channels at a scan rate that corresponds to a period of scan_period_ns nanoseconds. The rate is adjusted to a rate that the device can handle.
On success, 0 is returned. On failure, -1 is returned.
David Schleef <ds@schleef.org>
Frank Mori Hess <fmhess@users.sourceforge.net>
Herman Bruyninckx <Herman.Bruyninckx@mech.kuleuven.ac.be>
Bernd Porr <tech@linux-usb-daq.co.uk>
Ian Abbott <abbotti@mev.co.uk>
Éric Piel <piel@delmic.com>
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.
| 12/12/2020 | Comedi |