使用QT做串口通信上位机

#include #include 

class MainWindow : public QMainWindow{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();private slots:void on_pbConnect_clicked();void readData();private:Ui::MainWindow *ui;QSerialPort *serial; // 私有QSerialPort成员};

MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow){ui->setupUi(this);const auto infos = QSerialPortInfo::availablePorts();for(const QSerialPortInfo &info : infos){ui->cbCom->addItem(info.portName());}serial = new QSerialPort; //实例化 serialconnect(serial, &QSerialPort::readyRead, this, &MainWindow::readData);}

void MainWindow::on_pbConnect_clicked(){if(ui->pbConnect->text()==QString("连接")){serial->setPortName(ui->cbCom->currentText());serial->setBaudRate(QSerialPort::Baud115200);serial->setDataBits(QSerialPort::Data8);serial->setStopBits(QSerialPort::OneStop);serial->setParity(QSerialPort::NoParity);if(!serial->open(QIODevice::ReadWrite)){QMessageBox::information(this,"错误提示","不能打开串口",QMessageBox::Ok);}else{ui->cbCom->setEnabled(false);ui->pbConnect->setText("关闭");}}else{serial->close();ui->cbCom->setEnabled(true);ui->pbConnect->setText("连接");}}

const auto infos = QSerialPortInfo::availablePorts();for(const QSerialPortInfo &info : infos){ui->cbCom->addItem(info.portName());}

class MainWindow : public QMainWindow{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();private slots:void on_pbConnect_clicked();void readData();private:Ui::MainWindow *ui;QSerialPort *serial;};

void MainWindow::readData(){QString data = serial->readAll();QStringList datlist = data.split(",",QString::SkipEmptyParts);ui->lineEdit->setText(data);ui->lcdNumber1->display(datlist[0]);ui->lcdNumber2->display(datlist[1]);}