QT串口助手

 

 

 

//mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QPushButton>
#include <QDebug>

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

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

void MainWindow::system_init(){
    //port config Open button
    global_port.setParity(QSerialPort::NoParity);
    global_port.setDataBits(QSerialPort::Data8);
    global_port.setStopBits(QSerialPort::OneStop);

    //connect
    connect(ui->btn_open,&QPushButton::clicked,[=](){
        emit btn_open_port();
    });

    //send data
    connect(ui->btn_send,&QPushButton::clicked,[=](){
        emit btn_send_data();
    });


    //connect receive
    connect(&global_port,&QSerialPort::readyRead,this,&MainWindow::receive_data);
}

void MainWindow::btn_open_port(){
qDebug()<<"emit signal!";
/*--------------------portname---------*/
qDebug()<<ui->cmb_port_name->currentIndex();//0

switch (ui->cmb_port_name->currentIndex()) {
case 0:
    //设置为com0
{
    global_port.setPortName("COM1");
    break;
 }
case 1:
    //设置为com0
{
    global_port.setPortName("COM2");
    break;
 }
case 2:
    //设置为com0
{
    global_port.setPortName("COM3");
    break;
 }
case 3:
    //设置为com0
{
    global_port.setPortName("COM4");
    break;
 }
case 4:
    //设置为com0
{
    global_port.setPortName("COM5");
    break;
 }
case 5:
    //设置为com0
{
    global_port.setPortName("COM6");
    break;
 }
case 6:
    //设置为com0
{
    global_port.setPortName("COM7");
    break;
 }
case 7:
    //设置为com0
{
    global_port.setPortName("COM8");
    break;
 }
default:
    break;
}

/*-------------baud rate----------------*/
switch(ui->cmb_rate->currentIndex()){
case 0:
{
    global_port.setBaudRate(QSerialPort::Baud115200);
    break;
 }
case 1:
{
    global_port.setBaudRate(QSerialPort::Baud57600);
    break;
 }
case 2:
{
    global_port.setBaudRate(QSerialPort::Baud38400);
    break;
 }
case 3:
{
    global_port.setBaudRate(QSerialPort::Baud19200);
    break;
 }
case 4:
{
    global_port.setBaudRate(QSerialPort::Baud9600);
    break;
 }
case 5:
{
    global_port.setBaudRate(QSerialPort::Baud4800);
    break;
 }
case 6:
{
    global_port.setBaudRate(QSerialPort::Baud2400);
    break;
 }
case 7:
{
    global_port.setBaudRate(QSerialPort::Baud1200);
    break;
 }
default:
{
    global_port.setBaudRate(QSerialPort::Baud1200);
    break;
 }

}

//open port
global_port.open(QIODevice::ReadWrite);
ui->label->setText("Connected!");

//test
//global_port.write("1");
qDebug()<<"emit signal Done!";
}


void MainWindow::btn_send_data(){
    QString a = ui->sendEdit->text();
//    QString *b;
//    b =&a;
//    const char *data
    QByteArray array =  a.toUtf8();
//    QByteArray array1 =  *b->toLatin1();
    global_port.write(array);



}

void MainWindow::receive_data(){

QByteArray arr = global_port.readAll();
qDebug()<<arr;
ui->plainTextEdit->insertPlainText(QString(arr));

}

void MainWindow::on_cmb_close_clicked()
{
    global_port.close();
    ui->label->setText("Disconnected!");
    qDebug()<<"close!";
}