Open serial port when clicked the button

[deleted286]

Why my app crashed when i clicked the push button?
I want to open a port when i clicked the button. Program is crash every time.

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QtSerialPort/QSerialPort>
#include <QDebug>
#include <QSerialPortInfo>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    
    
}
MainWindow::~MainWindow()
{
    delete ui;
    serial->close();
}

void MainWindow::on_ports_activated(const QString &arg1)
{
ui->ports->clear();
const auto infos = QSerialPortInfo::availablePorts();
for(const QSerialPortInfo &info : infos )
{
    QString s = info.portName();
    ui->ports->addItem(s);
}
if (!ui->ports->count())
            ui->ports->addItem(tr("no com"));

}

void MainWindow::on_pushButton_clicked()
{
    serial->setPortName("/dev/ttyS1");
    serial->setBaudRate(QSerialPort::Baud115200);
    serial->setDataBits(QSerialPort::Data8);
    serial->setParity(QSerialPort::NoParity);
    serial->setStopBits(QSerialPort::OneStop);
    serial->setFlowControl(QSerialPort::NoFlowControl);
    if (serial->open(QIODevice::ReadWrite)) {
          qDebug()<<"Serial Port Open ";
          serial->clear();
    }
    else
    {
          qDebug()<<"Serial  Port Not Open !!!!";
    }
}

[Christian Ehrlicher]

C++ basics - where do you initialize your member serial ?

[deleted286]

@Christian-Ehrlicher Oh yes i forgot it. I initialize it now. Thank you

[Christian Ehrlicher]

@suslucoder Then mark the topic as solved.