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程序运行截图如下：

虚拟串口设置如下：

源码如下：

SerialDemo.pro

QT += core serialportQT -= guiCONFIG += c++11TARGET = SerialDemoCONFIG += consoleCONFIG -= app_bundleTEMPLATE = appSOURCES += main.cpp# The following define makes your compiler emit warnings if you use# any feature of Qt which as been marked deprecated (the exact warnings# depend on your compiler). Please consult the documentation of the# deprecated API in order to know how to port your code away from it.DEFINES += QT_DEPRECATED_WARNINGS# You can also make your code fail to compile if you use deprecated APIs.# In order to do so, uncomment the following line.# You can also select to disable deprecated APIs only up to a certain version of Qt.#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

main.cpp

#include 
   
    #include 
    
     #include 
     
      int main(int argc, char *argv[]){    QCoreApplication a(argc, argv);     QSerialPort serial;     serial.setPortName("com4");     if(!serial.open(QIODevice::ReadWrite)){         qDebug() << "open failed";         return -1;     }     serial.write(QString("1234567abcdefg").toStdString().c_str());     if (serial.waitForBytesWritten()) {         if (serial.waitForReadyRead()) {             QByteArray responseData = serial.readAll();             while (serial.waitForReadyRead(10))                 responseData += serial.readAll();             QString response(responseData);             qDebug() << response;         }     }    return a.exec();}
     
    
   

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