read_functions.py 文件源码

def _read_counter_scalar_u_32(task_handle, timeout):
    value = ctypes.c_uint()

    cfunc = lib_importer.windll.DAQmxReadCounterScalarU32
    if cfunc.argtypes is None:
        with cfunc.arglock:
            if cfunc.argtypes is None:
                cfunc.argtypes = [
                    lib_importer.task_handle, ctypes.c_double,
                    ctypes.POINTER(ctypes.c_uint), ctypes.POINTER(c_bool32)]

    error_code = cfunc(
        task_handle, timeout, ctypes.byref(value), None)
    check_for_error(error_code)

    return value.value