This article analyzes three methods of realizing serial communication program automation, including software polling, communication event and multithread in details.
详细分析了实现串行通讯程序自动化的三种方法:软件查询、通讯事件和多线程。
This can be useful when polling a serial port for data, as your program can determine the number of bytes in the input buffer before attempting a read.
在查询串口是否有数据到来的时候这一段是很有用的,可以让程序在准备读取之前用来确定输入缓冲区里面的可读字节数。
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