linux qt串口测试

#include <QCoreApplication>
#include <QSerialPort>
#include <QDebug>

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

    QSerialPort serial;
    serial.setPortName("/dev/ttyUSB0");
    serial.setBaudRate(QSerialPort::Baud9600);
    serial.setDataBits(QSerialPort::Data8);
    serial.setParity(QSerialPort::NoParity);
    serial.setStopBits(QSerialPort::OneStop);
    serial.setFlowControl(QSerialPort::NoFlowControl);

    if (serial.open(QIODevice::ReadWrite)) {
        qDebug() << "Serial port opened successfully";

        connect(&serial, &QSerialPort::readyRead, [&]() {
            QByteArray data = serial.readAll();
            qDebug() << "Received data:" << data;
        });

        QByteArray data = "Hello, Serial Port!";
        qint64 bytesWritten = serial.write(data);
        if (bytesWritten == -1) {
            qDebug() << "Failed to write data:" << serial.errorString();
        } else {
            qDebug() << "Bytes written:" << bytesWritten;
        }
    } else {
        qDebug() << "Failed to open serial port:" << serial.errorString();
    }

    return a.exec();
}