Digilent WaveForms - Manual (Page 61)

WaveForms™ SDK Reference Manual
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9.2 Configuration
FDwfDigitalInInternalClockInfo(HDWF hdwf,
double *phzFreq)
Parameters:
- hdwf – Interface handle.
- phzFreq – Pointer to return the internal clock frequency.
The function above is used to retrieve the internal clock frequency.
FDwfDigitalInClockSourceInfo(HDWF hdwf,
int *pfsDwfDigitalInClockSource)
Parameters:
-
hdwf – Open interface handle on a device.
- pfsDwfDigitalInClockSource – Pointer to variable to return the available clock source options.
The function above returns the supported clock sources for Digital In 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
DwfDigitalInClockSource constants in dwf.h:

DwfDigitalInClockSourceInternal: Internal clock.

DwfDigitalInClockSourceExternal: External clock source.
FDwfDigitalInClockSourceSet(HDWF hdwf, DwfDigitalInClockSource v)
Parameters:
-
hdwf – Open interface handle on a device.
- v – Clock source.
The function above is used to set the clock source of instrument.
FDwfDigitalInClockSourceGet(HDWF hdwf, DwfDigitalInClockSource *pv)
Parameters:
- hdwf – Open interface handle on a device.
- pv – Pointer to variable to return the configured value.
The function above is used to get the clock source of instrument.
FDwfDigitalInDividerInfo(HDWF hdwf,
unsigned int *pdivMax)
Parameters:
-
hdwf –Interface handle.
- pdivMax – Pointer to variable to return the available maximum divider value.
The function above returns the maximum supported clock divider value. This specifies the sample rate.