注意搭建好NDK开发环境，本程序是对于某人虚拟串口程序的改进版本，改进并增加了IO处理流程，增加了一些同步处理。-Note NDK build a good development environment, this program is for someone improved version of the virtual serial port program to improve and increase the IO processes, increasing the number of

android的同事需要在设备上操作串口，我用C语言写了个串口工具。 JNI NDK-Android s colleagues need on the equipment serial port operation, and I use C language to write a serial port tool.JNI the NDK