说明：  Android 串口编程原理和实现方式(附源码) 串口编程需要了解的基本知识点：对于串口编程，我们只需对串口进行一系列的设置，然后打开串口，这些操作我们可以参考串口调试助手的源码进行学习。
(Android serial programming principles and implementation (with source) Serial Programming basic knowledge you need to know: For serial programming, we need to set up a series of serial port, and then open the serial port, we can refer to these operations serial debugging aids source for learning.)