PyQT 4.7 does not have inherited class from QIODevice that allows to talk with serial port directly (e.g. QSerialDevice). So I thought that it would be easier for me to use QProcess class and implement the actual reading/writing to serial port from a different process that will interface with my main QT application using QProcess interface.

Now the problem is that amount of bytes sent and received is not the same when I am using the code below. **So my question is how to correctly read binary data from a serial port and then forward everything to the stdout?**

This is an excerpt from my main QT program that creates QProcess:

```
        self.micromouse_socket = QProcess()
        self.micromouse_socket.start("/home/ansis/Source/Perforce-pele/Pele/tools/console/comtalker.py", "")
        self.micromouse_socket.started.connect(self.on_micromouse_socket_started)
        self.label_8.setText("Starting COM...")

```

And this is the Process that will talk with Serial port (comtalker.py; non blocking part is not yet finished):

```
#!/usr/bin/python
import serial
import sys

if __name__ == "__main__":

    ser = serial.Serial(0)

    while 1 :
        x = ser.read(1)
        sys.stdout.write(x)
        sys.stdout.flush()

```

P.S. It could be that problem is somewhere else and not in PySerial. On the other computer I am writing to ttyS0 with this command "./binary\_data\_generator > /dev/ttyS0". The same code seemed to work fine when I was sending only ASCII characters (text+numbers)