device.py 文件源码

def ai_min_rate(self):
        """
        float: Indicates the minimum rate for an analog input task on
            this device. NI-DAQmx returns a warning or error if you
            attempt to sample at a slower rate.
        """
        val = ctypes.c_double()

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

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

        return val.value