""" Interface definition for function generator devices. """

class FunctionGenerator:
    """
    This interface specifies the common API for all
    supported function generator devices.
    """
    def setOn(self, channel: int) -> None:
        """ Enable channel. """

    def setOff(self, channel: int) -> None:
        """ Disable channel. """

    def setFrequency(self, channel: int, frequency: float) -> None:
        """ Set channel output frequency. """

    def setAmplitude(self, channel: int, amplitude: float) -> None:
        """ Set channel output amplitude. """

    def setFunction(self, channel: int, function: int) -> None:
        """ Set channel output waveform. """