watchdog.py 文件源码

 复制代码def timeout(self):
        """
        float: Specifies in seconds the amount of time until the
            watchdog timer expires. A value of -1 means the internal
            timer never expires. Set this input to -1 if you use an
            Expiration Trigger to expire the watchdog task.
        """
        val = ctypes.c_double()

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

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

        return val.value