Qt笔记-QSerialPort的使用（串口通信简单实例）

程序运行截图如下：

虚拟串口设置如下：

源码如下：

SerialDemo.pro

QT += core serialport
QT -= gui

CONFIG += c++11

TARGET = SerialDemo
CONFIG += console
CONFIG -= app_bundle

TEMPLATE = app

SOURCES += 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 <QCoreApplication>
#include <QSerialPort>
#include <QDebug>

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();
}