Hi,

I have created a Thread class:
Qt Code: 
  1. #ifndef SERIALTHREAD_H
  2. #define SERIALTHREAD_H
  3.  
  4. #include <QThread>
  5. #include <qDebug>
  6. #include "qextserialport.h"
  7. class SerialThread : public QThread
  8. {
  9.     Q_OBJECT
  10. public:
  11.     SerialThread(QString name) {
  12.         portName=name;
  13.     }
  14.  
  15.     void run();
  16.  
  17.  
  18. private:
  19.     QString portName;
  20.     QextSerialPort *port;
  21.  
  22. private slots:
  23.     void onReadyRead();
  24.  
  25. };
  26.  
  27. #endif // SERIALTHREAD_H
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Qt Code: 
  1. #include "SerialThread.h"
  2.  
  3. void SerialThread::run() {
  4.     port = new QextSerialPort(portName, QextSerialPort::EventDriven);
  5.     connect(port, SIGNAL(readyRead()), this, SLOT(onReadyRead()));
  6.     port->setBaudRate(BAUD9600);
  7.     port->setFlowControl(FLOW_OFF);
  8.     port->setParity(PAR_NONE);
  9.     port->setDataBits(DATA_8);
  10.     port->setStopBits(STOP_1);
  11.     port->open(QIODevice::ReadWrite);
  12.     exec();
  13. }
  14.  
  15. void SerialThread::onReadyRead()
  16. {
  17.     QByteArray bytes;
  18.     int a = port->bytesAvailable();
  19.     bytes.resize(a);
  20.     port->read(bytes.data(), bytes.size());
  21.     qDebug() << "bytes read:" << bytes.size();
  22.     qDebug() << "bytes:" << bytes;
  23. }
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In the MainWindow I call this Thread:
Qt Code: 
  1. MainWindow::MainWindow() {
  2.     setupUi(this);
  3.     t1 = new SerialThread("/dev/cu.usbserial-ftDIHUS6");
  4.     t1->start();
  5. }
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it seems to be a problem with the signals. When I send:
u I get:
Qt Code: 
  1. bytes read: 1 
  2. bytes: "u" 
  3. bytes read: 0 
  4. bytes: "" 
  5. bytes read: 0 
  6. bytes: "" 
  7. bytes read: 0 
  8. bytes: "" 
  9. bytes read: 0 
  10. bytes: "" 
  11. bytes read: 0 
  12. bytes: "" 
  13. bytes read: 0 
  14. bytes: "" 
  15. bytes read: 0 
  16. bytes: "" 
  17. bytes read: 0 
  18. bytes: "" 
  19. bytes read: 0 
  20. bytes: "" 
  21. bytes read: 0 
  22. bytes: ""
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Without Threads it works so what's the problem?