TrainCamp_lipengpeng_Modbus/widget.cpp

#include "widget.h"
#include "ui_widget.h"
#include <QSerialPortInfo>
#include <QDebug>
#include <QSerialPort>
#include <QByteArray>

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    serialPort = new QSerialPort(this);

    connect(serialPort,&QSerialPort::readyRead,this,&Widget::on_SerialData_ReadyToRead);

    ui->comboBox_baudRate->setCurrentIndex(3);
    ui->comboBox_dataBit->setCurrentIndex(3);
    ui->comboBox_xiaoyan->setCurrentIndex(2);

    QList<QSerialPortInfo> serialList = QSerialPortInfo::availablePorts();
    for(QSerialPortInfo serialInfo : serialList)
    {
        ui->comboBox_serialNum->addItem(serialInfo.portName());
    }
}

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

void Widget::on_btnConnect_clicked()
{
    if (ui->btnConnect->text() == "连接")
    {
    //配置串口号
        serialPort->setPortName(ui->comboBox_serialNum->currentText());
    //配置波特率
        serialPort->setBaudRate(ui->comboBox_baudRate->currentText().toInt());
    //配置数据位
        serialPort->setDataBits(QSerialPort::DataBits(ui->comboBox_dataBit->currentText().toInt()));
    //配置校验位
        switch (ui->comboBox_xiaoyan->currentIndex())
        {
        case 0:
            serialPort->setParity(QSerialPort::NoParity);
            break;
        case 1:
            serialPort->setParity(QSerialPort::OddParity);
            break;
        case 2:
            serialPort->setParity(QSerialPort::EvenParity);
        }
    //配置停止位
        serialPort->setStopBits(QSerialPort::StopBits(ui->comboBox_stopBit->currentText().toInt()));
    //打开串口
        if (serialPort->open(QIODevice::ReadWrite))
        {
            qDebug() << "Serial open success";
            ui->btnConnect->setText("断开");
        }
        else
        {
            qDebug() << "error";
        }
    }
    else
    {
        serialPort->close();
        ui->btnConnect->setText("连接");
    }

}

void Widget::on_pushWrite_clicked()
{
    const char *sendData = ui->lineEdit->text().toStdString().c_str();
    serialPort->write(sendData);
    qDebug() << "SenOk" <<sendData;
}

void Widget::on_SerialData_ReadyToRead()
{
    QByteArray revMessage = serialPort->readAll();
    QString hexData = revMessage.toHex().toUpper();
    qDebug() << hexData;
    ui->textEdit->append(hexData);

}