Digilent WaveForms Instrukcja Użytkownika Pobierz pdf (Strona 30)

WaveForms™ SDK Reference Manual

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FDwfAnalogInTriggerConditionInfo(HDWF hdwf, int *pfstrigcond)

Parameters:

- hdwf – Interface handle.

- pfstrigcond – Variable to receive the supported trigger conditions.

The function above returns the supported trigger type options for the 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

TRIGCOND constants in dwf.h. These trigger condition options are:

 trigcondRisingPositive (This is the default setting):

o For edge and transition trigger on rising edge.

o For pulse trigger on positive pulse.

 trigcondFallingNegative:

o For edge and transition trigger on falling edge.

o For pulse trigger on negative pulse.

FDwfAnalogInTriggerConditionSet(HDWF hdwf, TRIGCOND trigcond)

Parameters:

- hdwf – Interface handle.

- trigcond – Trigger condition to set.

The function above is used to set the trigger condition for the instrument.

FDwfAnalogInTriggerConditionGet(HDWF hdwf, TRIGCOND *ptrigcond)

Parameters:

- hdwf – Interface handle.

- ptrigcond – Variable to receive the current trigger condition.

The function above is used to set the trigger condition for the instrument.

FDwfAnalogInTriggerLevelInfo(

HDWF hdwf, double *pvoltsMin, double *pvoltsMax, int *pnSteps)

Parameters:

- hdwf – Interface handle.

- pvoltsMin – Variable to receive the minimum voltage level.

- pvoltsMax – Variable to receive the maximum voltage level.

- pnSteps – Variable to receive the number of voltage level steps.

The function above is used to retrieve the range of valid trigger voltage levels for the AnalogIn instrument in Volts.

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Digilent WaveForms Instrukcja Użytkownika Strona 30