getXtalFreq method
Implementation
@override
int getXtalFreq(Pointer<DeviceHandle> dev, Pointer<Uint32> rtlFreq,
Pointer<Uint32> tunerFreq) =>
(_getXtalFreq ??=
_library.lookupFunction<NativeGetXtalFreq, DartGetXtalFreq>(
'rtlsdr_get_xtal_freq'))(dev, rtlFreq, tunerFreq);