system.py 文件源码

def set_digital_logic_family_power_up_state(
            self, device_name, logic_family):
        """
        Sets the digital logic family to use when the device powers up.

        Args:
            device_name (str): Specifies the name as configured in MAX
                of the device to which this operation applies.
            logic_family (nidaqmx.constants.LogicFamily): Specifies the
                logic family set to the device to when it powers up. A
                logic family corresponds to voltage thresholds that are
                compatible with a group of voltage standards. Refer to
                device documentation for information on the logic high
                and logic low voltages for these logic families.
        """
        cfunc = lib_importer.windll.DAQmxSetDigitalLogicFamilyPowerUpState
        if cfunc.argtypes is None:
            with cfunc.arglock:
                if cfunc.argtypes is None:
                    cfunc.argtypes = [
                        ctypes_byte_str, ctypes.c_int]

        error_code = cfunc(
            device_name, logic_family.value)
        check_for_error(error_code)