QT_micro_climate_config/widget.cpp

#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    // 启动时刷新串口
    QStringList serialNamePort;
    foreach(const QSerialPortInfo &info, QSerialPortInfo::availablePorts())
    {
        serialNamePort << info.portName() + "|" + info.description();
    }
    ui -> SerialPort_comboBox -> clear();
    ui -> SerialPort_comboBox -> addItems(serialNamePort);

    Serial_port = new QSerialPort(this);
}

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

void Widget::closeEvent(QCloseEvent *event)
{
//    退出提醒弹窗
    QMessageBox *Close_msgBox = new QMessageBox(QMessageBox::Question, "提示", "是否退出", QMessageBox::Yes | QMessageBox::No, this, Qt::WindowStaysOnTopHint);
    Close_msgBox -> setDefaultButton(QMessageBox::No);
    Close_msgBox -> button(QMessageBox::No) -> setText(u8"不退出");
    Close_msgBox -> button(QMessageBox::Yes) -> setText(u8"退出");
    int val = Close_msgBox -> exec();
    if(val == QMessageBox::No)
    {
        event -> ignore();
    }
    if(val == QMessageBox::Yes)
    {
        event -> accept();
    }
}

//串口刷新
void Widget::on_SerialPort_refresh_pushButton_clicked()
{
    QStringList serialNamePort;
    foreach(const QSerialPortInfo &info, QSerialPortInfo::availablePorts())
    {
        serialNamePort << info.portName() + "|" + info.description();
    }
    ui -> SerialPort_comboBox -> clear();
    ui -> SerialPort_comboBox -> addItems(serialNamePort);
}

//打开关闭按钮状态
//1将打开按钮
//0将关闭按钮
int8_t open_button_status = 1;
void Widget::on_Open_Serial_pushButton_clicked()
{
    if(open_button_status == 1)
    {
        QSerialPort::BaudRate Baudrate = QSerialPort::Baud9600;
        QSerialPort::DataBits Databits = QSerialPort::Data8;
        QSerialPort::Parity Parity = QSerialPort::NoParity;
        QSerialPort::StopBits Stopbits = QSerialPort::OneStop;

        QComboBox *SerialPortbox = ui -> SerialPort_comboBox;
        QComboBox *Baudbox = ui -> BaudRate_comboBox;
        QComboBox *Databitsbox = ui -> DataBits_comboBox;
        QComboBox *Checkbitsbox = ui -> CheckBits_comboBox;
        QComboBox *Stopbitsbox = ui -> StopBits_comboBox;

        //波特率
        if(Baudbox -> currentText() == "4800"){
            Baudrate = QSerialPort::Baud4800;
        }
        else if(Baudbox -> currentText() == "9600"){
            Baudrate = QSerialPort::Baud9600;
        }
        else if(Baudbox -> currentText() == "19200"){
            Baudrate = QSerialPort::Baud19200;
        }
        else if(Baudbox -> currentText() == "38400"){
            Baudrate = QSerialPort::Baud38400;
        }
        else if(Baudbox -> currentText() == "57600"){
            Baudrate = QSerialPort::Baud57600;
        }
        else if(Baudbox -> currentText() == "115200"){
            Baudrate = QSerialPort::Baud115200;
        }
        else {
            QMessageBox::warning(this, "错误", "波特率未设置");
            return;
        }

        //数据位
        if(Databitsbox -> currentText() == "6"){
            Databits = QSerialPort::Data6;
        }
        else if(Databitsbox -> currentText() == "7"){
            Databits = QSerialPort::Data7;
        }
        else if(Databitsbox -> currentText() == "8"){
            Databits = QSerialPort::Data8;
        }
        else {
            QMessageBox::warning(this, "错误", "数据位未设置");
            return;
        }

        //校验位
        if(Checkbitsbox -> currentText() == "无"){
            Parity = QSerialPort::NoParity;
        }
        else if(Checkbitsbox -> currentText() == "奇"){
            Parity = QSerialPort::OddParity;
        }
        else if(Checkbitsbox -> currentText() == "偶"){
            Parity = QSerialPort::EvenParity;
        }
        else {
            QMessageBox::warning(this, "错误", "校验位未设置");
            return;
        }

       //停止位
        if(Stopbitsbox -> currentText() == "1"){
            Stopbits = QSerialPort::OneStop;
        }
        else if(Stopbitsbox -> currentText() == "1.5"){
            Stopbits = QSerialPort::OneAndHalfStop;
        }
        else if(Stopbitsbox -> currentText() == "2"){
            Stopbits = QSerialPort::TwoStop;
        }
        else {
            QMessageBox::warning(this, "错误", "停止位未设置");
            return;
        }

        //设置参数
        Serial_port -> setPort((const QSerialPortInfo)(SerialPortbox -> currentText().section('|', 0, 0)));
        Serial_port -> setBaudRate(Baudrate);
        Serial_port -> setDataBits(Databits);
        Serial_port -> setParity(Parity);
        Serial_port -> setStopBits(Stopbits);
        Serial_port -> setReadBufferSize(4096);
        if(Serial_port -> open(QIODevice::ReadWrite) == true){
            //        打开后将按钮变为关闭按钮，绿色指示标志
            ui -> Open_Serial_pushButton -> setText("关闭串口");
            ui -> serial_status_label -> setStyleSheet("QLabel { background-color :rgb(0, 144, 0); border-radius: 10px;}");
            //打开串口后禁止配置
            ui -> SerialPort_comboBox -> setEnabled(false);
            ui -> BaudRate_comboBox -> setEnabled(false);
            ui -> DataBits_comboBox -> setEnabled(false);
            ui -> CheckBits_comboBox -> setEnabled(false);
            ui -> StopBits_comboBox -> setEnabled(false);
            ui -> SerialPort_refresh_pushButton -> setEnabled(false);
            ui -> BaudRate_label -> setEnabled(false);
            ui -> DataBits_label -> setEnabled(false);
            ui -> CheckBits_label -> setEnabled(false);
            ui -> StopBits_label -> setEnabled(false);
        }
        else{
            QMessageBox::critical(this, "提示", "串口打开失败");
            return;
        }
    }
    else {
        //将按钮变为打开按钮，红色指示标志
        ui -> Open_Serial_pushButton ->setText("打开串口");
        ui -> serial_status_label ->setStyleSheet("QLabel { background-color :rgb(184, 0, 0); border-radius: 10px;}");
        Serial_port -> close();
        //关闭串口后允许配置
        ui -> SerialPort_comboBox -> setEnabled(true);
        ui -> BaudRate_comboBox -> setEnabled(true);
        ui -> DataBits_comboBox -> setEnabled(true);
        ui -> CheckBits_comboBox -> setEnabled(true);
        ui -> StopBits_comboBox -> setEnabled(true);
        ui -> SerialPort_refresh_pushButton -> setEnabled(true);
        ui -> BaudRate_label -> setEnabled(true);
        ui -> DataBits_label -> setEnabled(true);
        ui -> CheckBits_label -> setEnabled(true);
        ui -> StopBits_label -> setEnabled(true);
    }
    open_button_status = !open_button_status;
}