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Create a simple RS232 interface

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  • Q Offline
    Q Offline
    qt52
    wrote on 14 Nov 2012, 09:23 last edited by
    #9

    I found the build setting on left corner, is it something wrong with my build setting? I did tried 4 difference setting but result still the same.

    4.7.0 Debug
    4.7.0 Release
    Qt 4.7.3 for Desktop - MinGW 4.4 (Qt SDK) Debug
    Qt 4.7.3 for Desktop - MinGW 4.4 (Qt SDK) Release

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    • J Offline
      J Offline
      jalomic
      wrote on 14 Nov 2012, 09:28 last edited by
      #10

      Delete LIBS += -L“C:/Qt/qextserialport-1.2win-alpha/build/” -llibqextserialportd.a
      and post here output.

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      • Q Offline
        Q Offline
        qt52
        wrote on 14 Nov 2012, 09:36 last edited by
        #11

        http://imageshack.us/photo/my-images/203/buildn.jpg/
        ok, Can you see the image? I think a bit too small for you.

        !http://i.imgur.com/0av0q.jpg(Build1)!

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        • J Offline
          J Offline
          jalomic
          wrote on 14 Nov 2012, 10:06 last edited by
          #12

          strange behavior

          Recreate project

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          • Q Offline
            Q Offline
            qt52
            wrote on 14 Nov 2012, 10:09 last edited by
            #13

            Should i put the build folder ( .a and .dll) inside the project folder?

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            • Q Offline
              Q Offline
              qt52
              wrote on 14 Nov 2012, 10:20 last edited by
              #14

              When i unzip the file and double click the portcomsender.pro project file it prompt out this dialog.

              !http://i.imgur.com/H1iY5.jpg(Build2)!

              Is it this the issue?

              How can i use his .cpp and .h file to create my own project environmental?

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              • S Offline
                S Offline
                sierdzio
                Moderators
                wrote on 14 Nov 2012, 10:39 last edited by
                #15

                You should not use old .user files. Delete this file before opening a copied project.

                (Z(:^

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                • S Offline
                  S Offline
                  sierdzio
                  Moderators
                  wrote on 14 Nov 2012, 10:40 last edited by
                  #16

                  You can also consider testing the official Qt Playground project: "QtSerialPort":https://qt.gitorious.org/qtplayground/qtserialport.

                  (Z(:^

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                  • Q Offline
                    Q Offline
                    qt52
                    wrote on 14 Nov 2012, 11:29 last edited by
                    #17

                    Hello Sierdzio,

                    Thanks for your advice. Ya, in the folder i found this portcomsender.pro.user file. After deleted and open the project file again the dialog never prompt out anymore.

                    After this will ask for Target setup. I configured:
                    Desktop - Tick
                    Create Build Configurations: For Each Qt Version One Debug And One Release
                    Use Shadow Building - Tick
                    Click Finish

                    http://i.imgur.com/fUYLq.jpg
                    I try compile and there are few error prompt out. The image shows the error message.

                    emmm...The program look not so complicated but when compile that time is not that easy.

                    Is it possible to help me to create a sample project so that i can have a reference and easy for me to check where's the error?
                    This sample tutorial i get it from http://www.instructables.com/id/Control-your-arduino-from-your-PC-with-the-Qt-Gui/step3/Lets-program/

                    Thank you very much, I will test QtSerialPort later. It's quite interested to have working sample to test. This sample code is not a tutorial i guess it should be least explanation, hopefully i can understand the coding. I have C programming knowledge but lack C++ and this the first time i try windows programming. :)

                    Let me have a try first ya...Any question i will come back again..

                    Best Regards,
                    Qt52

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                    0
                    • S Offline
                      S Offline
                      sierdzio
                      Moderators
                      wrote on 14 Nov 2012, 11:35 last edited by
                      #18

                      You have got some missing includes - this is still all about LIBS and INCLUDEPATH in .pro file. I know it's hard to get right the first time you try. Maybe if you are new to this all, it would be better to try something using Qt classes only? You can take a look at example of including custom libs in my "QEasyShell":https://github.com/sierdzio/qeasyshell/blob/master/examples/basic/basic.pro project, but I'm using .pri so I'm not sure it will make it easier for you... although it might. Just be sure to read the global.pri in addition to the one I've linked.

                      (Z(:^

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                      • H Offline
                        H Offline
                        harshit_smart
                        wrote on 3 Jun 2014, 10:05 last edited by
                        #19

                        Hey bro ..m a newbie trying exactly the same program from instructables..
                        In the desktop prompt as mentioned in step 2 for controlling arduino using qt gui... i am getting the following error..please help if you have fixed the isse you were facing..thnx

                        C:\Qt\qextserialport-1.2win-alpha>C:\Qt\Qt5.3.0\Tools\mingw482_32\bin\mingw32-ma
                        ke.exe
                        C:/Qt/Qt5.3.0/Tools/mingw482_32/bin/mingw32-make -f Makefile.Release
                        mingw32-make[1]: Entering directory 'C:/Qt/qextserialport-1.2win-alpha'
                        g++ -c -pipe -fno-keep-inline-dllexport -O2 -Wall -Wextra -frtti -fexceptions -m
                        threads -DUNICODE -D_TTY_WIN_ -DQT_NO_DEBUG -DQT_CORE_LIB -I. -I'../Qt5.3.0/5.3/
                        mingw482_32/include' -I'../Qt5.3.0/5.3/mingw482_32/include/QtCore' -I'build/moc'
                        -I'../Qt5.3.0/5.3/mingw482_32/mkspecs/win32-g++' -o build/obj/win_qextserialpor
                        t.o win_qextserialport.cpp
                        win_qextserialport.cpp: In member function 'virtual bool Win_QextSerialPort::ope
                        n(QIODevice::OpenMode)':
                        win_qextserialport.cpp:187:37: error: 'class QString' has no member named 'toAsc
                        ii'
                        Win_Handle=CreateFileA(port.toAscii(), GENERIC_READ|GENERIC_WRITE,
                        ^
                        win_qextserialport.cpp: At global scope:
                        win_qextserialport.cpp:431:6: warning: unused parameter 'c' [-Wunused-parameter]

                        void Win_QextSerialPort::ungetChar(char c) {
                        ^
                        win_qextserialport.cpp:948:6: warning: unused parameter 'msecs' [-Wunused-parame
                        ter]
                        bool Win_QextSerialPort::waitForReadyRead(int msecs)
                        ^
                        win_qextserialport.cpp: In member function 'void Win_QextSerialPort::monitorComm
                        Event()':
                        win_qextserialport.cpp:988:6: warning: suggest explicit braces to avoid ambiguou
                        s 'else' [-Wparentheses]
                        if (eventMask & EV_DSR)
                        ^
                        Makefile.Release:538: recipe for target 'build/obj/win_qextserialport.o' failed
                        mingw32-make[1]: *** [build/obj/win_qextserialport.o] Error 1
                        mingw32-make[1]: Leaving directory 'C:/Qt/qextserialport-1.2win-alpha'
                        Makefile:34: recipe for target 'release' failed
                        mingw32-make: *** [release] Error 2

                        C:\Qt\qextserialport-1.2win-alpha>

                        thanks

                        Harshit arora

                        urgent reply needed...

                        [quote author="qt52" date="1352892591"]Hello Sierdzio,

                        Thanks for your advice. Ya, in the folder i found this portcomsender.pro.user file. After deleted and open the project file again the dialog never prompt out anymore.

                        After this will ask for Target setup. I configured:
                        Desktop - Tick
                        Create Build Configurations: For Each Qt Version One Debug And One Release
                        Use Shadow Building - Tick
                        Click Finish

                        http://i.imgur.com/fUYLq.jpg
                        I try compile and there are few error prompt out. The image shows the error message.

                        emmm...The program look not so complicated but when compile that time is not that easy.

                        Is it possible to help me to create a sample project so that i can have a reference and easy for me to check where's the error?
                        This sample tutorial i get it from http://www.instructables.com/id/Control-your-arduino-from-your-PC-with-the-Qt-Gui/step3/Lets-program/

                        Thank you very much, I will test QtSerialPort later. It's quite interested to have working sample to test. This sample code is not a tutorial i guess it should be least explanation, hopefully i can understand the coding. I have C programming knowledge but lack C++ and this the first time i try windows programming. :)

                        Let me have a try first ya...Any question i will come back again..

                        Best Regards,
                        Qt52

                        [/quote]

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                        0
                        • K Offline
                          K Offline
                          kuzulis
                          Qt Champions 2020
                          wrote on 3 Jun 2014, 11:45 last edited by
                          #20

                          2 harshit_smart,

                          instead of QextSerialPort you can use the QtSerialPort in your Qt5.3. The QtSerialPort is an part of an official Qt add-on package. To install it (using an official Qt installer) is enough to expand an "Addons" checkbox and to select "SerialPort" component.

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                          0
                          • H Offline
                            H Offline
                            harshit_smart
                            wrote on 3 Jun 2014, 12:18 last edited by
                            #21

                            Thanks for awaited reply ...Ill surely try that right now...but will the program work thats given in the 3rd step of instructable for connecting arduino to qt gui???

                            [quote author="kuzulis" date="1401795947"]2 harshit_smart,

                            instead of QextSerialPort you can use the QtSerialPort in your Qt5.3. The QtSerialPort is an part of an official Qt add-on package. To install it (using an official Qt installer) is enough to expand an "Addons" checkbox and to select "SerialPort" component. [/quote]

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                            0
                            • K Offline
                              K Offline
                              kuzulis
                              Qt Champions 2020
                              wrote on 3 Jun 2014, 12:55 last edited by
                              #22

                              The QtSerialPort has an built-in Terminal example (and others examples). So, you can try it.

                              PS: I don't know about protocol between Arduino and PC.

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                              0
                              • H Offline
                                H Offline
                                harshit_smart
                                wrote on 4 Jun 2014, 11:56 last edited by
                                #23

                                Hi Kuzulis,
                                The Qt port terminal example i have already tried, that works fine....
                                What i am trying to do is this instructable and cant really get it through....ghosh.....i never thought it would be too difficult....

                                http://www.instructables.com/id/Control-your-arduino-from-your-PC-with-the-Qt-Gui/step3/Lets-program/

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