Digilent WaveForms User Manual

Page 25

WaveForms™ SDK Reference Manual

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Page 25 of 85

FDwfAnalogInTriggerSourceInfo(HDWF hdwf,

int

*pfstrigsrc)

Parameters:
-

hdwf – Interface handle.

pfstrigsrc – Variable to receive the supported trigger sources.

The function above returns the supported trigger source options for the AnalogIn instrument. They are returned
(by reference) as a bit field. This bit field can be parsed using the IsBitSet Macro. Individual bits are defined using
the TRIGSRC constants in dwf.h. For more detail regarding these constants, see the description of
FDwfDeviceTriggerInfo.

FDwfAnalogInTriggerSourceSet(HDWF hdwf, TRIGSRC trigsrc)

Parameters:
-

hdwf – Interface handle.

trigsrc – Trigger source to set.

The function above is used to configure the AnalogIn acquisition trigger source.

FDwfAnalogInTriggerSourceGet(HDWF hdwf, TRIGSRC *ptrigsrc)

Parameters:
-

hdwf – Interface handle.

ptrigsrc – Variable to receive the current trigger source.

The function above returns the configured trigger source. The trigger source can be “none” or an internal
instrument or external trigger. To use the trigger on AnalogIn channels (edge, pulse, etc.), use
trigsrcDetectorAnalogIn.

FDwfAnalogInTriggerPositionInfo(HDWF hdwf,

double

*psecMin,

double

*psecMax)

Parameters:
-

hdwf – Interface handle.

psecMin – Variable to receive the minimum trigger position.

psecMax – Variable to receive the maximum trigger position.

The function above returns the minimum and maximum values of the trigger position in seconds. The horizontal
trigger position is used for Single acquisition mode and it is relative to the buffer middle point.

FDwfAnalogInTriggerPositionSet(HDWF hdwf,

double

secPosition)

Parameters:
-

hdwf – Interface handle.

secPosition – Trigger position to set.

The function above is used to configure the horizontal trigger position in seconds.