qt中使用460800波特率的串口接收数据的完整代码

在Qt中，要使用460800波特率的串口接收数据，你需要包含相关的头文件，并创建一个`QSerialPort`实例来连接串口。以下是一个基本的例子，假设你已经设置了正确的串口号：

#include <QObject>
#include <QSerialPort>
#include <QSerialPortInfo>

class SerialReceiver : public QObject
{
    Q_OBJECT

public slots:
    void startReceiving();

private:
    QSerialPort serial;
    bool isReceiving;

public:
    explicit SerialReceiver(QObject *parent = nullptr)
        : QObject(parent), isReceiving(false) {
        // 获取可用的串口号
        QSerialPortInfo portInfo;
        foreach (const QSerialPortInfo &info, portInfo.availablePorts()) {
            if (info.baudRate() == QSerialPort::Baud460800 && info.isSequentialPort()) {
                serial.setPortName(info.portName());
                break;
            }
        }

        if (!serial.isValid()) {
            qWarning("Invalid or no suitable serial port found with baud rate 460800");
            return;
        }

        connect(&serial, &QSerialPort::readyRead, this, &SerialReceiver::processData);
    }

private slots:
    void processData() {
        QByteArray data = serial.readAll();
        // 在这里处理接收到的数据
        QString receivedData = QString::fromUtf8(data);
        qDebug() << "Received Data: " << receivedData;

        // 如果数据处理完成，可以停止接收
        if (isProcessingComplete()) {
            stopReceiving();
        }
    }

    void stopReceiving() {
        serial.flush();
        serial.close();
        isReceiving = false;
    }

signals:
    void receivingFinished();
};

void SerialReceiver::startReceiving() {
    if (!serial.isOpen()) {
        if (serial.open(QIODevice::ReadOnly)) {
            isReceiving = true;
            emit receivingFinished(); // 发出信号通知接收开始
        } else {
            qWarning("Failed to open the serial port");
        }
    }
}

// 使用示例
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    SerialReceiver receiver;
    receiver.startReceiving();

    // 程序其他部分...

    return app.exec();
}