jni封装串口通讯例子源码，在jni层封装rs232,在android用java调用实现控制 串口发送和接收数据(JNI package serial communication example source code, in the JNI layer package RS232, in android with Java call to achieve control serial port to send and receive data)

java调用串口功能使用工具类,操作串口开关(Java calls the serial port function to use the tool class)