超级便宜的STM8S003+LT8920收发代码 分TX和RX两个工程 驱动和主函数都有 自己做项目的话可以直接移植使用(Super cheap STM8S003+ LT8920 transceiver code points, TX and RX drive and the main function has its own two engineering project can be transplanted directly to use )