Digilent WaveForms - Manual (Page 85)

WaveForms™ SDK Reference Manual
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Page 85 of 85
FDwfAnalogOutPhaseSet(
HDWF hdwf,
int idxChannel, double degreePhase)
Parameters:
- hdwf – Open interface handle on a device.
- idxChannel – Channel index.
- degreePhase – Value of Phase in degrees.
The function above is used to set the phase for the specified channel on the instrument. With channel index -1,
each enabled Analog Out channel phase will be configured to use the same, new option.
FDwfAnalogOutPhaseGet(HDWF hdwf,
int idxChannel, double *pdegreePhase)
Parameters:
-
hdwf – Open interface handle on a device.
- idxChannel – Channel index.
- pdegreePhase – Pointer to variable to receive Phase value (in degrees).
The function above is used to get the current phase for the specified channel on the instrument.
FDwfAnalogOutDataInfo(
HDWF hdwf,
int idxChannel, int *pnSamplesMin, double *pnSamplesMax)
Parameters:
- hdwf – Open interface handle on a device.
- idxChannel – Channel index.
- pnSamplesMin - Minimum number of samples available for custom data.
- pnSamplesMax – Maximum number of samples available for custom data.
The function above is used to retrieve the minimum and maximum number of samples allowed for custom data
generation.
FDwfAnalogOutDataSet(HDWF hdwf,
int idxChannel, double *rgdData, int cdData)
Parameters:
-
hdwf – Open interface handle on a device.
- idxChannel – Channel index.
- rgbData – Buffer of samples to set.
- cData – Number of samples to set in rgbData.
The function above is used to set the custom data or to prefill the buffer with play samples. The samples are
double precision floating point values (rgdData) normalized to ±1.
With the custom function option, the data samples (cdData) will be interpolated to the device buffer size. The
output value will be Offset + Sample*Amplitude, for instance:
- 0 value sample will output: Offset.
- +1 value sample will output: Offset + Amplitude.
- -1 value sample will output: Offset – Amplitude.