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Chapter 10 Easy I/O for DAQ Library
© National Instruments Corporation 10-21 LabWindows/CVI Standard Libraries
AOGenerateWaveforms
short
error
=
AOGenerateWaveforms
(short
device
, char
channelString
[],
double
updatesPerSecond
,
int
updatesPerChannel
, int
iterations
,
double
waveforms
[],
unsigned long *
taskID
);
Purpose
This function generates a timed waveform of voltage data on the analog output channels
specified in the
channelString
.
Parameters
Input
device
short integer Assigned by configuration utility.
channelString
string The analog output channels to which the
voltages are applied.
updatesPerSecond
double The number of updates that are performed per
second. Any particular channel is updated at
this rate.
updatesPerChannel
integer The number of D/A conversions that compose
a waveform for a particular channel.
iterations
integer The number of waveform iterations that are
performed before the operation is complete; 0
= continuous.
Output
waveforms
double array The voltages to be applied to the channels
specified in the
channelString.
taskID
unsigned
long integer
Returns an identifier for the waveform
generation. If you pass 0 as the
iterations
parameter you need to pass the
taskID
to
AOClearWaveforms to clear the waveform
generation.
Return Value
error
short integer Refer to error codes in Table 10-5.
Parameter Discussion
channelString
is the analog output channels to which the voltages are applied. Refer to the
Channel String for Analog Output Functions subsection of the Easy I/O for DAQ Library
Function Overview section of this chapter for the syntax of this string.