QextSerialPort, dTxfrUSB and microcontroller Arduino - read from device

muqet

Hi all,
I would like to design GUI for microcontroller Arduino in Qt Creator. So I have looked at internet and found aQtLow (https://code.google.com/p/aqtlow/)
which has its own communication library dTxfrUSB for Arduino.
I wanted to use this for my project but I don't understand how to use the dTxfrUSB in Qt GUI. I have implemented the library into code for microcontroller (Arduino) and now - how to read the data microcontroller sends to me per USB in my Qt GUI?
This is the dTxfrUSB code:
@/*
dTxfrUSB - an Arduino library for a communicating with Qt.
Copyright (C) 2011 Dee Wykoff

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "dTxfrUSB.h"

dTxfrUSB::dTxfrUSB()
{
}

void dTxfrUSB::Run()
{
/*
Incoming messages from PC
Byte Meaning
0 Hi byte of function code
1 Low byte
2 Hi byte of destination (if a write command)
3 Low byte
4 Hi byte of data (if a write command)
5 Low byte
6 Check byte
*/
uint8_t ByteArray[255];
int16_t ArrayPosition = 0;
uint8_t Check = 0x55;
if(Serial.available()>=7)
{
while(Serial.available())
{
ByteArray[ArrayPosition] = Serial.read();
ArrayPosition++;
}
for(int i = 0; i < 6; i++)
{
Check = Check ^ ByteArray[i];
}
if(Check == ByteArray[6])
{
SetFC(word(ByteArray[0],ByteArray[1]));
if(!Active)
{
Active = true;
}
PreviousActivityTime = millis();
}
}
if(millis() > (PreviousActivityTime + 60000))
{
if(Active)
{
Active = false;
}
}

//****************** Send Data ***********************
if(FC == DT_FC_REQUEST_DATA)
{
Send();
FC = DT_FC_NONE;
}

//****************** Write Coil **********************
if(FC == DT_FC_WRITE_COIL)
{
C[word(ByteArray[2],ByteArray[3])] = word(ByteArray[4],ByteArray[5]) > 0;
FC = DT_FC_NONE;
}

//****************** Write Register ******************
if(FC == DT_FC_WRITE_REGISTER)
{
R[word(ByteArray[2],ByteArray[3])] = word(ByteArray[4],ByteArray[5]);
FC = DT_FC_NONE;
}
}

void dTxfrUSB::Send()
{
/*
Outgoing message to PC
Byte Meaning
0 Hi byte of R[0]
1 Low byte
...
190 Hi byte of R[95]
191 Low byte
192 C[0-7]
203 C[88-95]
204 Check byte
*/
uint8_t ByteArray[255];
uint8_t Check = 0x55;
int16_t ArrayPosition = 0;
for(int i = 0; i < DT_N_R; i++)
{
ByteArray[ArrayPosition] = highByte(R[i]);
Check = Check ^ ByteArray[ArrayPosition];
ArrayPosition++;
ByteArray[ArrayPosition] = lowByte(R[i]);
Check = Check ^ ByteArray[ArrayPosition];
ArrayPosition++;
}
uint8_t Byte;
for(int i = 0; i < (DT_N_C/8); i++)
{
Byte = 0;
for(int j = 0; j < 8; j++)
{

  Byte |= (C[i*8+j] << j);
}
ByteArray[ArrayPosition] = Byte;
Check = Check ^ ByteArray[ArrayPosition];
ArrayPosition++;

}
ByteArray[ArrayPosition] = Check;
ArrayPosition++;
Serial.write(ByteArray, ArrayPosition);
}

void dTxfrUSB::SetFC(int fc)
{
/*
Function codes
Code Meaning
1 Gimme data
5 Write coil C
6 Write register R
*/
switch(fc)
{
case 1:
FC = DT_FC_REQUEST_DATA;
break;
case 5:
FC = DT_FC_WRITE_COIL;
break;
case 6:
FC = DT_FC_WRITE_REGISTER;
break;
default:
FC = DT_FC_NONE;
break;
}
}@

I am using QextSerialPort, so far I have:

@port = new QextSerialPort(schnittstelle);

port->open(QIODevice::ReadWrite | QIODevice::Unbuffered);
if(!port->isOpen())
{
    QMessageBox::warning(this, "port error", "Schnittstelle "+schnittstelle+" reagiert nicht.");
}

port->setBaudRate(BAUD9600);
port->setFlowControl(FLOW_OFF);
port->setParity(PAR_NONE);
port->setDataBits(DATA_8);
port->setStopBits(STOP_1);@

and now I would like to read the coming information from Arduino. In Arduino code, I have variable dT.R[ 0 ] - dT.R[ 6 ] and dT.C[ 0 ] - dT.C[ 6 ] and I would like to use them in my Qt GUI as actual values (e.g. voltage on the device, it must be actual).
The dT.Run(); function in Arduino is called every loop so the values of dT.R[i] and dT.C[i] should be sent to me in Mhz takt. Will they appear in console as well? It is a pity I have forgotten my Arduino at work so I can't experiment with it until Monday ;) Only to write the code.
How can I read the dT.R and dT.C please in Qt Creator? I will create for them widgets where they appear then.
Many thanks.