reference_trigger.py 文件源码

def dig_pattern_trig_when(self):
        """
        :class:`nidaqmx.constants.DigitalPatternCondition`: Specifies
            whether the Reference Trigger occurs when the physical
            channels specified with **dig_pattern_src** match or differ
            from the digital pattern specified with
            **dig_pattern_pattern**.
        """
        val = ctypes.c_int()

        cfunc = lib_importer.windll.DAQmxGetDigPatternRefTrigTrigWhen
        if cfunc.argtypes is None:
            with cfunc.arglock:
                if cfunc.argtypes is None:
                    cfunc.argtypes = [
                        lib_importer.task_handle, ctypes.POINTER(ctypes.c_int)]

        error_code = cfunc(
            self._handle, ctypes.byref(val))
        check_for_error(error_code)

        return DigitalPatternCondition(val.value)