USB虚拟串口通信实现

Implementation of Virtual Serial Port Communication Based on USB

以一种高度集成的USB总线转接芯片CH341为核心,设计并实现了基于USB接口的PC机与下位机的虚拟串口通信。上位机在Windows环境下利用MSComm控件实现与下位机通信,介绍了USB转虚拟串口的实现方法,并基于该虚拟串口编写了智能家居控制应用软件。实验测试表明,采用虚拟串口实现上位机与单片机通信,具有结构简单、速度快和易于软件开发等特点,能满足于各种串口通信场合。

The communication between computer and microcomputer based on USB interface through virtual serial port is designed and implemented by taking a highly integrated USB bus adapter chip CH341 as kernel. The data transmission between host computer and lower microcomputer is achieved through MSComm control in the Windows environment. The design and implementation of USB to virtual port are illustrated in detail, and the system control software based on the virtual port is developed. Experiments show that the virtual serial port communication can meet various requirements of serial communication with simple structure, high speed, and easy software development.