New line in label with new data on serialport

Julian

Hello, I'm using Qt 5.5 and I use QSerialPort and it work fine!. The arduino send data from usb and I can just get the first line, this is because, the code is:

void MainWindow::readData()
{


    Buffer += serie->readAll();

    if(Buffer.size()==8)
    {
        n++;
         //Aca se debería llamar a la función que muestre en pantalla los datos
        this->Show();
        Buffer.clear();  //luego se limplia para los próximos datos,
        Buffer.resize(8);
    }


}

void MainWindow::Show()
{
    int hora, min, seg;
    QString cadena1, cadena2, cadena3, cadena4, cadena5, cadena6,cadena7, cadena8;
    QString cadena, separacion;

    
    separacion=": ";
    cadena1="- Persona ingresada nº: ";
    cadena2=QString::number(n);
    cadena3=" Documento: ";
    cadena4=QString::fromLocal8Bit(Buffer);

    //obtenemos la hora
    hora=tiempo->hour();
    min=tiempo->minute();
    seg=tiempo->second();

    cadena5=" Hora";

    cadena6=QString::number(hora);
    cadena7=QString::number(min);
    cadena8=QString::number(seg);

    cadena=cadena1+cadena2+cadena3+cadena4+cadena5+separacion+cadena6+separacion+cadena7+separacion+cadena8;
 
    
    ui->label_2->setText(cadena);

}

Everytime that there is a next data on the port, the method readData is call. The method Show() show the data in the label.

How Can I put another line in the label (label_2)?

Because the next time that is a data on the port readData will be call and Show too but what I want is that the new date must be show in the next line of label_2.

SGaist

Hi and welcome to devnet,

Looks like you should rather be using a class like QPlainTextEdit. Otherwise you'll have to re-read the content of your QLabel each round and append what you received.

Hope it helps

Julian

@Julian said:

Buffer.clear(); //luego se limplia para los próximos datos,
Buffer.resize(8);

O thanks. But I thinks the Buffer no clear good, or is not deleted and created good. How can I do that?

Julian

@SGaist Sorry, but. How to make a line jump on text browser?

jsulm

@Julian Add a new line:

textEdit.appendPlainText("\n");

Unsolved New line in label with new data on serialport