Qt5 QSerialPort write data

Question

How I can write data in serial port, with delay between send's messages? This is my code:

void MainWindow::on_pushButton_Done_clicked()
{
    if(sport->isOpen()){
        sport->clear();
        QString cmd = Phase+Mode;

        //Write Stop
        sport->write("stop!", 5);

        //Write Mode
        sport->write(cmd.toStdString().c_str(), cmd.toStdString().length());

        //Write Speed
        sport->write(Speed.toStdString().c_str(), Speed.toStdString().length());

        //Write Direction
        sport->write(Direction.toStdString().c_str(), Direction.toStdString().length());

        //Run
        sport->write("start!", 6);

    }
}

My device receives an error message when I call this function.

Thank you.

Answer 1

2 options:

• use waitForBytesWritten to ensure the bytes are written and then a short sleep

  however this will block the thread and will block the gui

• the other is using a QTimer to trigger another slot a few times and a field that will indicate what needs to be sent