I want to use qtcreator and qserialdevice to allow my Beaglebone (branch 3.2 Angstrom) communicate with devices. I am developing on Ubuntu 13.10.

I downloaded the qserial device and it built OK using the cross compiler. I then compiled the examples and they work on the Beaglebone. Now I want to use the qserialdevice within the QtCreator GUI but I'm having trouble compiling. The error is "error: cannot find -lqserialdeviced". I created a new directory under qserialdevice/examples and copied the files from writer directory before modifying them.

I know it should be simple but I'm stuck and need help.

Regards,
James

Heres my .pro file:-
Qt Code: 
  1. #-------------------------------------------------
  2. #
  3. # Project created by QtCreator 2013-06-21T16:11:25
  4. #
  5. #-------------------------------------------------
  6.  
  7. QT       += core gui
  8.  
  9. greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
  10.  
  11. TARGET = writerw1
  12. TEMPLATE = app
  13.  
  14.  
  15. SOURCES += main.cpp\
  16.         mainwindow.cpp
  17.  
  18. HEADERS  += mainwindow.h
  19.  
  20. FORMS    += mainwindow.ui
  21.  
  22. OBJECTS_DIR = obj
  23. MOC_DIR = moc
  24. INCLUDEPATH += ../../src/qserialdevice
  25.  
  26.  
  27. CONFIG(debug, debug|release) {
  28.     QMAKE_LIBDIR += ../../src/build/debug
  29.     LIBS += -lqserialdeviced
  30.     DESTDIR = debug
  31.     TARGET = writerw1d
  32. } else {
  33.     QMAKE_LIBDIR += ../../src/build/release
  34.     LIBS += -lqserialdevice
  35.     DESTDIR = release
  36.     TARGET = writerw1
  37. }
To copy to clipboard, switch view to plain text mode 

The following is the mainwindow.cpp code

Qt Code: 
  1. The following is the mainwindow.cpp code
  2.  
  3. #include "mainwindow.h"
  4. #include "ui_mainwindow.h"
  5.  
  6. #include <QtCore/QCoreApplication>
  7. #include <QtCore/QDebug>
  8. #include <abstractserial.h>
  9. #include <iostream>
  10.  
  11.  
  12. MainWindow::MainWindow(QWidget *parent) :
  13.     QMainWindow(parent),
  14.     ui(new Ui::MainWindow)
  15. {
  16.     ui->setupUi(this);
  17.  
  18.     /* Writer
  19.     *
  20.     * This application is part of the examples on the use of the library QSerialDevice.
  21.     *
  22.     * writer - a test console application to write data to the port
  23.     *
  24.     * Copyright (C) 2009  Denis Shienkov
  25.     *
  26.     * Contact Denis Shienkov:
  27.     *          e-mail: <scapig2@yandex.ru>
  28.     *             ICQ: 321789831
  29.     */
  30.  
  31.      using namespace std;
  32.  
  33.     AbstractSerial *port = new AbstractSerial();
  34.  
  35.  
  36.         /* 1. First - create an instance of an object.
  37.         */
  38.  
  39.  
  40.         char dn[50]; //device name
  41.         cout << "Please enter serial device name, specific by OS, \n example: in Windows -> COMn, in GNU/Linux -> /dev/ttyXYZn: ";
  42.         cin >> dn;
  43.  
  44.         /* 2. Second - set the device name.
  45.         */
  46.         port->setDeviceName(dn);
  47.  
  48.         /* 3. Third - open the device.
  49.  
  50.             Here, the port is opened with the flag "Unbuffered".
  51.             In this case (transfer data) can not use this flag.
  52.         */
  53.         if (port->open(AbstractSerial::WriteOnly | AbstractSerial::Unbuffered)) {
  54.  
  55.             qDebug() << "Serial device " << port->deviceName() << " open in " << port->openMode();
  56.  
  57.             //Here, the default current parameters (for example)
  58.             qDebug() << "= Default parameters =";
  59.             qDebug() << "Device name            : " << port->deviceName();
  60.             qDebug() << "Baud rate              : " << port->baudRate();
  61.             qDebug() << "Data bits              : " << port->dataBits();
  62.             qDebug() << "Parity                 : " << port->parity();
  63.             qDebug() << "Stop bits              : " << port->stopBits();
  64.             qDebug() << "Flow                   : " << port->flowControl();
  65.  
  66.             /* 4. Fourth - now you can set the parameters. (after successfully opened port)
  67.             */
  68.  
  69.             //Here example set baud rate 115200 bit/sec (baud)
  70.             if (!port->setBaudRate(AbstractSerial::BaudRate115200)) {
  71.                 qDebug() << "Set baud rate " <<  AbstractSerial::BaudRate115200 << " error.";
  72.                 goto label;
  73.             };
  74.  
  75.             if (!port->setDataBits(AbstractSerial::DataBits8)) {
  76.                 qDebug() << "Set data bits " <<  AbstractSerial::DataBits8 << " error.";
  77.                 goto label;
  78.             }
  79.  
  80.             if (!port->setParity(AbstractSerial::ParityNone)) {
  81.                 qDebug() << "Set parity " <<  AbstractSerial::ParityNone << " error.";
  82.                 goto label;
  83.             }
  84.  
  85.             if (!port->setStopBits(AbstractSerial::StopBits1)) {
  86.                 qDebug() << "Set stop bits " <<  AbstractSerial::StopBits1 << " error.";
  87.                 goto label;
  88.             }
  89.  
  90.             if (!port->setFlowControl(AbstractSerial::FlowControlOff)) {
  91.                 qDebug() << "Set flow " <<  AbstractSerial::FlowControlOff << " error.";
  92.                 goto label;
  93.             }
  94.  
  95.             /*
  96.                 ...
  97.                 here you can set other parameters.
  98.                 ...
  99.             */
  100.  
  101.             /*
  102.             Important Note:
  103.  
  104.             1. For All OS:
  105.             If you use buffered mode (ie, at the opening did not put the flag AbstractSerial::Unbuffered),
  106.             there is no need to set timeouts reading (Ie they are to remain the default = 0)/
  107.             Any value other than 0 will only slow down data acquisition.
  108.  
  109.             2. For Windows:
  110.             If you are using unbuffered mode, the timeouts have the effect of reading!
  111.             Necessary for the total timeout to set the value of reading At least 1 ms,
  112.             or (at 0) will not be read.
  113.  
  114.             PS: I have not figured out yet what the reason.
  115.  
  116.             3. For *.nix:
  117.             If you are using unbuffered mode, the timeouts have the effect of reading!
  118.             Necessary for the total timeout to set the value of reading At least 100 ms,
  119.             as if the value is 0 read will return immediately,
  120.             so you can not read the requested number of bytes (ie, reading function can return fewer bytes).
  121.  
  122.             In any case, experiment with options for treatment with buffered/unbuffered,
  123.             as well as the timeout values from 0 to N and find the differences. :)
  124.            */
  125.  
  126.  
  127.             //Here, the new set parameters (for example)
  128.             qDebug() << "= New parameters =";
  129.             qDebug() << "Device name            : " << port->deviceName();
  130.             qDebug() << "Baud rate              : " << port->baudRate();
  131.             qDebug() << "Data bits              : " << port->dataBits();
  132.             qDebug() << "Parity                 : " << port->parity();
  133.             qDebug() << "Stop bits              : " << port->stopBits();
  134.             qDebug() << "Flow                   : " << port->flowControl();
  135.  
  136.             QByteArray ba; //data to send
  137.             qint64 bw = 0; //bytes really writed
  138.  
  139.             /* 5. Fifth - you can now read / write device, or further modify its settings, etc.
  140.             */
  141.             while (1) {
  142.                 bw = 0;
  143.                 cout << "Please enter count bytes for wtitten : ";
  144.                 cin >> bw;
  145.  
  146.                 qDebug() << "Starting writting " << bw << " bytes in time : " << QTime::currentTime();
  147.  
  148.                 ba.clear();
  149.                 ba.resize(bw);
  150.  
  151.                 while (bw--) //filling data array
  152.                     ba[(int)bw] = bw;
  153.  
  154.                 bw = port->write(ba);
  155.                 qDebug() << "Writed is : " << bw << " bytes";
  156.             }
  157.         }
  158.         else {
  159.             qDebug() << "Error opened serial device " << port->deviceName();
  160.         }
  161.  
  162.         label:
  163.  
  164.         port->close();
  165.         qDebug() << "Serial device " << port->deviceName() << " is closed";
  166.         delete port;
  167.         port = 0;
  168.  
  169.     }
  170.  
  171. MainWindow::~MainWindow()
  172. {
  173.     delete ui;
  174.  
  175.  
  176. }
To copy to clipboard, switch view to plain text mode