qt在linux打开串口写数据

#include "mainwindow.h"

#include "ui_mainwindow.h"

#include "qdebug.h"

MainWindow::MainWindow(QWidget *parent)

    : QMainWindow(parent), ui(new Ui::MainWindow)

{

    ui->setupUi(this);

    PortSettings myComSetting = {BAUD115200,DATA_8,PAR_NONE,STOP_1,FLOW_OFF,500};

    myCom = new QextSerialPort("/dev/ttyS0",myComSetting);

    bool re = myCom ->open(QIODevice::ReadWrite);

    qDebug()< 
  
    writeMyCom();
 
  
}
 
  
void MainWindow::writeMyCom()
 
  
{
 
  
    QByteArray temp = myCom->readAll();
 
  
    qDebug() << myCom->write("hello word\n");
 
  
    ui->textBrowser->insertPlainText(temp);
 
  
 
  
}
 
  
MainWindow::~MainWindow()
 
  
{
 
  
    delete ui;
 
  
}