comedi_command man page

comedi_command — start streaming input/output

Synopsis

#include <comedilib.h>

int comedi_command(comedi_t * device, comedi_cmd * command);

Description

The function comedi_command starts a streaming input or output. The command structure pointed to by command specifies settings for the acquisition. The command must be able to pass comedi_command_test with a return value of 0, or comedi_command will fail. For input subdevices, sample values are read using the function read on the device file descriptor. For output subdevices, sample values are written using the function write.

Return Value

On success, 0 is returned. On failure, -1 is returned.

Authors

David Schleef <ds@schleef.org>

Author.

Frank Mori Hess <fmhess@users.sourceforge.net>

Author.

Herman Bruyninckx <Herman.Bruyninckx@mech.kuleuven.ac.be>

Author.

Bernd Porr <tech@linux-usb-daq.co.uk>

Author.

Ian Abbott <abbotti@mev.co.uk>

Author.

Éric Piel <piel@delmic.com>

Author.

Info

05/11/2017 Comedi reference