qt 串口多线程开发源码

以下是一个简单的Qt串口多线程开发的示例代码：

#include <QCoreApplication>
#include <QtSerialPort/QSerialPort>
#include <QtSerialPort/QSerialPortInfo>
#include <QThread>
#include <QDebug>

class SerialPort : public QThread
{
    Q_OBJECT

public:
    SerialPort(QString portName, QObject *parent = nullptr) :
        QThread(parent)
    {
        m_portName = portName;
        m_stop = false;
    }

    void stop()
    {
        m_stop = true;
    }

signals:
    void dataReceived(const QByteArray &data);

protected:
    void run() override
    {
        QSerialPort serialPort;
        serialPort.setPortName(m_portName);
        serialPort.setBaudRate(QSerialPort::Baud9600);
        serialPort.setDataBits(QSerialPort::Data8);
        serialPort.setParity(QSerialPort::NoParity);
        serialPort.setStopBits(QSerialPort::OneStop);
        serialPort.setFlowControl(QSerialPort::NoFlowControl);

        if (!serialPort.open(QIODevice::ReadOnly))
        {
            qDebug() << "Failed to open serial port " << m_portName;
            return;
        }

        while (!m_stop)
        {
            if (serialPort.waitForReadyRead(100))
            {
                QByteArray data = serialPort.readAll();
                emit dataReceived(data);
            }
        }

        serialPort.close();
    }

private:
    QString m_portName;
    bool m_stop;
};

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QList<QSerialPortInfo> ports = QSerialPortInfo::availablePorts();

    if (ports.isEmpty())
    {
        qDebug() << "No available serial ports found!";
        return 0;
    }

    SerialPort serialPort(ports.first().portName());
    QObject::connect(&serialPort, &SerialPort::dataReceived, [](const QByteArray &data){
        qDebug() << "Received data: " << data;
    });

    serialPort.start();

    return a.exec();
}

#include "main.moc"

该示例代码实现了一个继承自QThread的SerialPort类，该类在单独的线程中打开串口并等待接收数据，当有数据到达时，将数据通过dataReceived信号发送出去。在主函数中，我们创建了一个SerialPort对象并启动它的线程，同时将dataReceived信号连接到一个lambda函数中，用于接收和处理串口数据。