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Create a simple RS232 interface

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  • J Offline
    J Offline
    jalomic
    wrote on last edited by
    #10

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

    1 Reply Last reply
    0
    • Q Offline
      Q Offline
      qt52
      wrote on 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)!

      1 Reply Last reply
      0
      • J Offline
        J Offline
        jalomic
        wrote on last edited by
        #12

        strange behavior

        Recreate project

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        0
        • Q Offline
          Q Offline
          qt52
          wrote on last edited by
          #13

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

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          0
          • Q Offline
            Q Offline
            qt52
            wrote on 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?

            1 Reply Last reply
            0
            • sierdzioS Offline
              sierdzioS Offline
              sierdzio
              Moderators
              wrote on last edited by
              #15

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

              (Z(:^

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              0
              • sierdzioS Offline
                sierdzioS Offline
                sierdzio
                Moderators
                wrote on 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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                0
                • Q Offline
                  Q Offline
                  qt52
                  wrote on 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

                  1 Reply Last reply
                  0
                  • sierdzioS Offline
                    sierdzioS Offline
                    sierdzio
                    Moderators
                    wrote on 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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                    0
                    • H Offline
                      H Offline
                      harshit_smart
                      wrote on 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]

                      1 Reply Last reply
                      0
                      • K Offline
                        K Offline
                        kuzulis
                        Qt Champions 2020
                        wrote on 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.

                        1 Reply Last reply
                        0
                        • H Offline
                          H Offline
                          harshit_smart
                          wrote on 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]

                          1 Reply Last reply
                          0
                          • K Offline
                            K Offline
                            kuzulis
                            Qt Champions 2020
                            wrote on 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.

                            1 Reply Last reply
                            0
                            • H Offline
                              H Offline
                              harshit_smart
                              wrote on 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/

                              1 Reply Last reply
                              0

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