Serial flow with multiples data (Arduino) [SOLVED]

cherault

Hi all,

I just finished a Qt program which read a serial flow from an Arduino.
This program works well when I print just only one data from Arduino.
But how Qt can read multiple data sent within the serial flow of the same Arduino ?

I give you my Qt code just in case, which print only one data:

@
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QSerialPort>

using namespace std;

QSerialPort *serial;

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
serial=new QSerialPort(this);
serial->setPortName("/dev/ttyACM0");
serial->setBaudRate(QSerialPort::Baud9600);
serial->setDataBits(QSerialPort::Data8);
serial->setParity(QSerialPort::NoParity);
serial->setStopBits(QSerialPort::OneStop);
serial->setFlowControl(QSerialPort::NoFlowControl);
serial->open(QIODevice::ReadOnly);//mettre un bouton d'activation du port

connect(serial, SIGNAL(readyRead()),this,SLOT(serialReceived()));

}

MainWindow::~MainWindow()
{
delete ui;
serial->close();
}

void MainWindow::serialReceived()
{
QByteArray valeur;
valeur = serial->readAll();
float nb = valeur.toFloat();
ui->lcdNumber->display(nb);
}
@

Thanks for your help, time and support.

Regards,

kuzulis

I do not understand, what do you want?

Please, read similar issue (as I understand): http://qt-project.org/forums/viewthread/52407/

cherault

Hi,

Thanks for the link but I have not this kind of problem.

My problem is:

1- Arduino is coded to send three data over serial port. (Works)
2- Qt received the flow of the serial port (Works)
3- Qt show me just only one value over three (Doesn't work)

So my question is:

Does it exist a way to show these 3 values on Qt in C++ (Linux) ?
The three values are plot on the serial terminal of the arduino like this:

data1 data2 data3

Actually, Qt show only data1.

Thanks for your help

kuzulis

bq. Does it exist a way to show these 3 values on Qt in C++ (Linux) ?

yes. just check your input stream, llike:

@
void MainWindow::serialReceived()
{
qDebug() << serial->bytesAvailable();
}
@

for data1 .. data3 size. and then to parse your input stream correctly.

cherault

Thanks so much fore your help Kuzulis.

Regards,