Keil环境下编写的NRF9E5的应用软件，和Nordic公司不同的是这个工程目录里演示的是利用串口和按键来自由收发数据的完整过程。-Keil environment NRF9E5 prepared by the application software, Nordic companies and the difference is the project directory is demonstrated by the use of serial and keys to freely rece