system.py 文件源码

def set_analog_power_up_states_with_output_type(
            self, power_up_states):
        """
        Updates power up states for analog physical channels.

        Args:
            power_up_states (List[nidaqmx.types.AOPowerUpState]):
                Contains the physical channels and power up states to
                set. Each element of the list contains a physical channel
                and the power up state to set for that physical channel.

                - physical_channel (str): Specifies the physical channel to
                  modify.
                - power_up_state (float): Specifies the power up state
                  to set for the physical channel specified with the
                  **physical_channel** input.
                - channel_type (:class:`nidaqmx.constants.AOPowerUpOutputBehavior`):
                  Specifies the output type for the physical channel
                  specified with the **physical_channel** input.
        """
        physical_channel = flatten_channel_string(
            [p.physical_channel for p in power_up_states])
        state = numpy.float64(
            [p.power_up_state for p in power_up_states])
        channel_type = numpy.int32(
            [p.channel_type.value for p in power_up_states])

        cfunc = lib_importer.cdll.DAQmxSetAnalogPowerUpStatesWithOutputType
        if cfunc.argtypes is None:
            with cfunc.arglock:
                if cfunc.argtypes is None:
                    cfunc.argtypes = [
                        ctypes_byte_str,
                        wrapped_ndpointer(dtype=numpy.float64,
                                          flags=('C','W')),
                        wrapped_ndpointer(dtype=numpy.int32,
                                          flags=('C','W'))]

        error_code = cfunc(
            physical_channel, state, channel_type, len(power_up_states))
        check_for_error(error_code)