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NI-DAQmx C Reference Help

Edition Date: January 2019

Part Number: 370471AM-01

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Data Type: int32
Description: Specifies how an NI-DAQmx Read function waits for samples to become available.

Valid values

DAQmx_Val_WaitForInterrupt 12523 Check for available samples when the system receives an interrupt service request. This mode is the most CPU efficient, but results in lower possible sampling rates.
DAQmx_Val_Poll 12524 Repeatedly check for available samples as fast as possible. This mode allows for the highest sampling rates at the expense of CPU efficiency.
DAQmx_Val_Yield 12525 Repeatedly check for available samples, but yield control to other threads after each check. This mode offers a balance between sampling rate and CPU efficiency.
DAQmx_Val_Sleep 12547 Check for available samples once per the amount of time specified in Sleep Time.

You can get/set/reset this property using:





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