Modbus串口 未完成

111205

#ifndef MAINWINDOW_H

#define MAINWINDOW_H

#include <QMainWindow>

#include <QModbusRtuSerialMaster>

#include <QSerialPort>

namespace Ui {

class MainWindow;

}

class MainWindow : public QMainWindow

{

    Q_OBJECT

public:

    explicit MainWindow(QWidget *parent = 0);

    ~MainWindow();

private slots:

    void on_pushButton_clicked();

    void replyFinished();

    void on_pushButton_2_clicked();

private:

    Ui::MainWindow *ui;

    QModbusRtuSerialMaster *rtuMaster;

};

#endif // MAINWINDOW_H

#include "mainwindow.h"

#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :

    QMainWindow(parent),

    ui(new Ui::MainWindow)

{

    ui->setupUi(this);

    rtuMaster=new QModbusRtuSerialMaster(this);

    rtuMaster->setConnectionParameter(QModbusDevice::SerialPortNameParameter,"COM3");

    rtuMaster->setConnectionParameter(QModbusDevice::SerialBaudRateParameter,9600);

    rtuMaster->setConnectionParameter(QModbusDevice::SerialParityParameter,QSerialPort::EvenParity);

    rtuMaster->setConnectionParameter(QModbusDevice::SerialDataBitsParameter,QSerialPort::Data8);

    rtuMaster->setConnectionParameter(QModbusDevice::SerialStopBitsParameter,QSerialPort::OneStop);

}

MainWindow::~MainWindow()

{

    delete ui;

}

void MainWindow::on_pushButton_clicked()

{

    QModbusDataUnit unit(QModbusDataUnit::HoldingRegisters,ui->lineEdit_2->text().toInt(),2);

    QModbusReply *reply=rtuMaster->sendReadRequest(unit,1);

    if(reply&&!reply->isFinished())

    {

        connect(reply,QModbusReply::finished,this,MainWindow::replyFinished);

    }

}

void MainWindow::on_pushButton_2_clicked()

{

    if(rtuMaster->state()!=QModbusRtuSerialMaster::ConnectedState)

    {

        rtuMaster->connectDevice();

    }

    QVector<quint16> data;

    data<<5<<24;

    QModbusDataUnit uint(QModbusDataUnit::HoldingRegisters,ui->lineEdit_2->text().toInt(),data);

    rtuMaster->sendWriteRequest(uint,1);

}

void MainWindow::replyFinished()

{

    QModbusReply *reply=qobject_cast<QModbusReply *>(sender());

    if(reply)

    {

        QModbusDataUnit uint=reply->result();

        reply->deleteLater();

        ui->lineEdit->setText(QString::number(uint.value(0)));

    }

}