1、示例看开发指南“快速上手”或者pda_example.zip
2、逻辑拆分流程:进入app初始化上电、打开串口，退出app下电、关闭串口，打开串口会获得一个GClient对象，通过此对象发送不同命令。
3、更详细api示例看example(IDEA).zip内部示例，忽略掉（上电、打开连接部分）。

1. For an example, see the development guide "Getting Started" or pda_example.zip
2. Logical splitting process: enter the app to initialize power on, open the serial port, exit the app, power off, close the serial port, open the serial port to get a GClient object, and send different commands through this object.
3. For more detailed api examples, see the internal example of example(IDEA).zip, ignore (power on, open the connection part).