适合在单片机环境下使用的TLV解包组包功能，占用资源很少（代码本身其实与运行环境无关，可直接在WINDOWS与LINUX下使用）-Suitable for use in single-chip environment group TLV unpack package features a small footprint (unrelated to the code itself and the operating environment, can be used directly in the WINDOWS and LINUX)