QT add qserialport class to realize serial port operation

• Preface

I've been studying recently Qt, I want to be a serial assistant . But when adding two header files related to the serial port （QSerialPort、QSerialPortInfo） The file doesn't exist all the time , Know that there are two files related to the local serial port , I also read many online tutorials , But I just can't get it right , For a long time . This is a post , Prevent the majority of beginners from having the same confusion in the future . This tutorial is suitable for Qt All versions , Installing other classes can also be used as a reference

• Environmental Science

System ：win10

Qt edition ：5.14.0

• Installation steps

One 、 Download related files

First, you need to download relevant files on the official website , However, due to the slow download of the official website , Therefore, it is recommended to use domestic image source . Here I use the mirror image of Tsinghua University https://mirrors.tuna.tsinghua.edu.cn/, Search for qt, open official_release（ Some official codes , Tools ）

next open qt Folder , Here you can choose the version , Install on your own computer qt Just select the version of

Select the version and then open submodules Folder , Slide down , Find the serial port related files, as shown in the figure below , download

Two 、 install

Unzip and open the project , Open the project configuration page

It opens at build The steps of the make Column details , stay Make arguments（make Parameters ） Fill in the install, The choice here is release The way ,debug The same way of operation

Then compile the whole project , In this way, these two classes are installed on the computer , It can be used for other projects

• 3、 ... and 、 The last step

Open the serial port project , Contains these two header files

#include <QSerialPort>        // Provides the function of accessing the serial port 
#include <QSerialPortInfo>    // Provide the information of the serial port in the system 

At this time, an error will still be reported that the file cannot be found , This is normal , Still need to be in .pro Add a line of code to the file

QT       +=serialport

At this point, you can normally use the classes and methods related to the serial port