Creates channel(s) to generate digital pulses that freq and dutyCycle define and adds the channel to the task you specify with taskHandle. The pulses appear on the default output terminal of the counter unless you select a different output terminal.
Parameters
Input
Name
Type
Description
taskHandle
TaskHandle
The task to which to add the channels that this function creates.
counter
const char []
The name of the counter to use to create virtual channels. You can specify a list or range of physical channels.
nameToAssignToChannel
const char []
The name(s) to assign to the created virtual channel(s). If you do not specify a name, NI-DAQmx uses the physical channel name as the virtual channel name. If you specify your own names for nameToAssignToChannel, you must use the names when you refer to these channels in other NI-DAQmx functions.
If you create multiple virtual channels with one call to this function, you can specify a list of names separated by commas. If you provide fewer names than the number of virtual channels you create, NI-DAQmx automatically assigns names to the virtual channels.
units
int32
The units in which to specify freq.
Name
Description
DAQmx_Val_Hz
hertz
idleState
int32
The resting state of the output terminal.
Value
Description
DAQmx_Val_High
High state.
DAQmx_Val_Low
Low state.
initialDelay
float64
The amount of time in seconds to wait before generating the first pulse.
freq
float64
The frequency at which to generate pulses.
dutyCycle
float64
The width of the pulse divided by the pulse period. NI-DAQmx uses this ratio, combined with frequency, to determine pulse width and the interval between pulses.
Return Value
Name
Type
Description
status
int32
The error code returned by the function in the event of an error or warning. A value of 0 indicates success. A positive value indicates a warning. A negative value indicates an error.
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