I use the terminal version and in "main.cpp" I create another MainWindow variable w1. In "MainWindow.cpp" I was able in method MainWindow::ReadData() to modify so I can test what is the COM (the code is included below).

My problem is that when I do "serial->write(data);" it sends the data on the same COM that the bytes received. I want to send data received in the other one: if I get data on COM3 I want to send them on COM4 and vice-versa.

Have someone an idea ?

Thanks

void MainWindow::readData()
{
QByteArray data = serial->readAll();
console->putData(data);
if (serial->portName()=="COM3")
serial->write(data);
}