RS485串口通信程序，类似于【串口调试助手】，演示了如何设置RTS和清除RTS，同时，这些设置不影响RS232和RS422的使用-RS485 serial communication program, similar to [serial debugging aides], demonstrates how to set the RTS and clear the RTS at the same time, these settings do not affect the RS232 and

基于RS232/RS485通信协议的 Linux 串口通信动态链接库封装的实现。-Realization of dynamic link library for Linux serial communication