Example client/server using QextSerialPort

qextserial_example.cpp

#include "widget.h"
#include "ui_widget.h"
#include "qextserialport.h"
#include <QInputDialog>

namespace {
    const QString DEFAULT_PORT = "COM6";
}

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget), port(NULL)
{
    ui->setupUi(this);

    write(tr("Asking for port name"));
    QString portName =
        QInputDialog::getText(this, tr("Specify port"), tr("Serial port name:"),
                              QLineEdit::Normal, DEFAULT_PORT );

    write(tr("Opening port %1").arg(portName));
    port = new QextSerialPort(portName);
    connect(port, &QextSerialPort::readyRead, [=](){
        QByteArray data = port->readAll();
        write(tr(">> ") + data.toHex());
    });

    if(port->open(QextSerialPort::ReadWrite)) {
        write(tr("Opened!"));
    } else {
        write(tr("Failed :("));
    }

    connect(ui->send, &QPushButton::clicked, [=](){
        QByteArray data = ui->dataInput->toPlainText().toLocal8Bit();
        write("<< " + data);
        port->write(QByteArray::fromHex(data));
        port->flush();
    });
}

void Widget::write(QString text) {
    ui->console->append(text);
}

Widget::~Widget()
{
    delete ui;
}