I want make device execute command , when I press the radio-button in QT

segtteee

I am in serial communication with the device. if i enter the command, device execute and send data to me. I can see that in data_show . but i want if i press the radio-button, device execute command. It's original command is "mon 1" and "mon 0" . How can i do that? (command is command window ui )

below is my code.

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    mSerialport = new QSerialPort (this);

      connect(ui->pushButton_send,&QPushButton::clicked,[=](){
       sendMsg(ui->command->toPlainText());
    });
}


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


void MainWindow::on_pushButton_connect_clicked()
{
    mSerialport->setPortName(ui->comboBox_port->currentText());

    if (ui->comboBox_baudrate->currentText() == "9600 bps")
        mSerialport->setBaudRate(QSerialPort::Baud9600);
    else if (ui->comboBox_baudrate->currentText() == "19200 bps")
        mSerialport->setBaudRate(QSerialPort::Baud19200);
    else if (ui->comboBox_baudrate->currentText() == "38400 bps")
        mSerialport->setBaudRate(QSerialPort::Baud38400);
    else if (ui->comboBox_baudrate->currentText() == "57600 bps")
        mSerialport->setBaudRate(QSerialPort::Baud57600);
    else if (ui->comboBox_baudrate->currentText() == "115200 bps")
        mSerialport->setBaudRate(QSerialPort::Baud115200);

    mSerialport->setDataBits(QSerialPort::Data8);
    mSerialport->setStopBits(QSerialPort::OneStop);

    if (mSerialport->open(QIODevice::ReadWrite))
    {
        QMessageBox::information(this,tr("connect"),"Serial communication start");
    }
    else
    {
        QMessageBox::critical(this,tr("error"),mSerialport->errorString());
    }
}

void MainWindow::on_pushButton_disconnect_clicked()
{
    QMessageBox::information(this,tr("disconnect"),"Serial communication end");
    mSerialport->close();
}


void MainWindow::sendMsg(const QString &msg)
{
    QString str = msg;
    str.append("\n");
    this->mSerialport->write(str.toLatin1());
    ui->datalog->insertPlainText(QDateTime::currentDateTime().
          toString("yyyy-MM-dd hh:mm:ss") + " [send] " + msg + "\n");


}

void MainWindow::recvMsg()
{
    QByteArray msg = this->mSerialport->readAll();
    ui->datalog->insertPlainText(QDateTime::currentDateTime().
          toString("yyyy-MM-dd hh:mm:ss") + " [recieve] " + msg.toHex().
          data() + "\n");
}

void MainWindow::read_device_data()
{
    QByteArray device_data(mSerialport->readAll());
    ui->data_show->setText(device_data);
}

dheerendra

Y r u opening duplicate question for the same topic ?. U have already posted one question exactly same topic. I have asked you the question.

Now in this piece of code where is the radio button ? I don't see any radio button at all in the code. Is it part of UI code ? If yes, you can add the code piece like this.

connect(ui->radioButton,&QRadioButton::clicked,={
CallMe();
});

segtteee

@dheerendra
sorry... Callme is what mean?

dheerendra

callme() is function name.

segtteee

@dheerendra

ui->setupUi(this);
   mSerialport = new QSerialPort (this);
   connect(ui->pushButton_send,&QPushButton::clicked,[=](){
       sendMsg(ui->command->toPlainText())
   });
   connect(ui->radioButton_on,&QRadioButton::clicked,[=](){
       monitor_mode_on();
  });


void MainWindow::monitor_mode_on()
{
    "     "
}


//I have write this, but between " " I do not know what code to write.  is this 'mSerialport->"mon 1"' ?  (mon 1 is command)

mrjj

Hi
I assume you want to have
mSerialport->write("XXX");
To write the command to the device.

segtteee

@mrjj
thank you for reply.

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    mSerialport = new QSerialPort (this);
    connect(ui->pushButton_send,&QPushButton::clicked,[=](){
        sendMsg(ui->command->toPlainText());

    });
    connect(ui->radioButton_on,&QRadioButton::clicked,[=](){
        monitor_mode_on();
    });

    connect(ui->radioButton_off,&QRadioButton::clicked,[=](){
        monitor_mode_off();
    });
}

Is this the right structure for the rules? Add two connectors below and it will not run . (Two sentences inclusing radio-button)

mrjj

Well on button you call sendMsg and for the
radioButton_on you call monitor_mode_on() which will send a command and
same does radioButton_off
Which seem pretty ok if monitor_mode_on/off sends
command to device to enable/disable something.

segtteee

@mrjj
I think mSerialport->write("XXX"); is wrong.
my device couldn't recognize command.

mrjj

@segtteee
Hi
In what way wrong?
the XXX was just example
you need
mSerialport->write("mon 1");
or what ever real command is. :)

segtteee

@mrjj
I wrote mSerialport-> write ("mon 1"); but device doesn't work.
So is not the code wrong?

mrjj

@segtteee
Nope, should send the string if port is open etc.
The write function returns how many bytes written.

so you can do
qDebug() << "written->" << mSerialport->write("mon 1");
(#include <QDebug>)

Can you see on device if it gets the string?

segtteee

@mrjj
i wrote qDebug() << "written->" << mSerialport->write("mon 1");
and i can see 'written-> 5' in application output window.
What does this mean?
The equipment does not carry out orders ("mon 1" or "mon 0") .

mrjj

@segtteee
It means that it wrote 5 chars to the serial port.
so it seems it does send it :)

The equipment does not carry out orders ("mon 1" or "mon 0") .
And you are sure that is the syntax for the command?
And board are ready to accept commands etc?
Who wrote the code on the board?

segtteee

@mrjj
By writing behind "\ N" I had solved the problem . Thank you!!

mrjj

@segtteee
ahh, it was expecting a line. not just the text.
super :)