Creating cfg file using mbed system

RDA5981_SDK目录结构，有需要的下载哦，呵呵，不用谢！(RDA5981_SDK directory structure, you need to download oh, you are welcome!)

RDA5981_mbed TCP应用程序开发基础，有需要的下载哦，呵呵，不用谢！(RDA5981_mbed TCP application development foundation, there is a need to download oh, no thanks!)

Arm Mbed DAPLink is an open-source software project that enables programming and debugging application software on running on Arm Cortex CPUs. Commonly referred to as interface firmware, DAPLink runs on a secondary MCU that is attached to the SWD or