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Unable to read from QSerialPort using MSVC compiler

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qserialportmingwmsvcread serial
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  • T Turi

    @jsulm
    I have already tried all this and all seem work fine, without any error. But my application still does not read from the serial only if I use the MSVC compiler.

    J.HilkJ Offline
    J.HilkJ Offline
    J.Hilk
    Moderators
    wrote on last edited by
    #13

    @Turi what versions are we actually talking here ?

    Qt(from the kit), msvc, windows etc.

    and can you show more of your actually class that does the serial communication?


    Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


    Q: What's that?
    A: It's blue light.
    Q: What does it do?
    A: It turns blue.

    T 1 Reply Last reply
    0
    • jsulmJ jsulm

      @Turi Did you verify that the other side sends something?

      T Offline
      T Offline
      Turi
      wrote on last edited by
      #14

      @jsulm
      Yes, the other side reveives and sends messages.

      1 Reply Last reply
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      • J.HilkJ J.Hilk

        @Turi what versions are we actually talking here ?

        Qt(from the kit), msvc, windows etc.

        and can you show more of your actually class that does the serial communication?

        T Offline
        T Offline
        Turi
        wrote on last edited by
        #15

        @J-Hilk
        I'm using:

        • Qt Creator 4.9.0
        • Based on Qt 5.12.2 (MSVC 2017, 32 bit)
        • Windows 10 Enterprise

        Unfortunately I can't show more of my actually class due to the fact that is reserved code.

        jsulmJ 1 Reply Last reply
        0
        • T Turi

          @J-Hilk
          I'm using:

          • Qt Creator 4.9.0
          • Based on Qt 5.12.2 (MSVC 2017, 32 bit)
          • Windows 10 Enterprise

          Unfortunately I can't show more of my actually class due to the fact that is reserved code.

          jsulmJ Offline
          jsulmJ Offline
          jsulm
          Lifetime Qt Champion
          wrote on last edited by
          #16

          @Turi said in Unable to read from QSerialPort using MSVC compiler:

          Based on Qt 5.12.2 (MSVC 2017, 32 bit)

          This is the Qt version which was used to build QtCreator.
          What Qt version do you use?

          https://forum.qt.io/topic/113070/qt-code-of-conduct

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          • T Offline
            T Offline
            Turi
            wrote on last edited by
            #17

            Qt 5.12.3
            MinGW 7.3.0 32-bit
            MSVC 2017 32-bit

            jsulmJ 1 Reply Last reply
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            • T Turi

              Qt 5.12.3
              MinGW 7.3.0 32-bit
              MSVC 2017 32-bit

              jsulmJ Offline
              jsulmJ Offline
              jsulm
              Lifetime Qt Champion
              wrote on last edited by
              #18

              @Turi Can you try with 5.15.2?

              https://forum.qt.io/topic/113070/qt-code-of-conduct

              T 1 Reply Last reply
              0
              • jsulmJ jsulm

                @Turi Can you try with 5.15.2?

                T Offline
                T Offline
                Turi
                wrote on last edited by
                #19

                @jsulm
                Can you pass me a link where I can download this version?

                jsulmJ 1 Reply Last reply
                0
                • T Offline
                  T Offline
                  Turi
                  wrote on last edited by
                  #20

                  I tried with Qt 5.12.2 but not work.

                  jsulmJ 1 Reply Last reply
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                  • T Turi

                    @jsulm
                    Can you pass me a link where I can download this version?

                    jsulmJ Offline
                    jsulmJ Offline
                    jsulm
                    Lifetime Qt Champion
                    wrote on last edited by
                    #21

                    @Turi said in Unable to read from QSerialPort using MSVC compiler:

                    Can you pass me a link where I can download this version?

                    Use the Qt Maintenance Tool to add that Qt version to your installation.

                    https://forum.qt.io/topic/113070/qt-code-of-conduct

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                    • T Turi

                      I tried with Qt 5.12.2 but not work.

                      jsulmJ Offline
                      jsulmJ Offline
                      jsulm
                      Lifetime Qt Champion
                      wrote on last edited by
                      #22

                      @Turi said in Unable to read from QSerialPort using MSVC compiler:

                      I tried with Qt 5.12.2 but not work.

                      I seggested 5.15.2, not 5.12.2

                      https://forum.qt.io/topic/113070/qt-code-of-conduct

                      T 1 Reply Last reply
                      0
                      • jsulmJ jsulm

                        @Turi said in Unable to read from QSerialPort using MSVC compiler:

                        I tried with Qt 5.12.2 but not work.

                        I seggested 5.15.2, not 5.12.2

                        T Offline
                        T Offline
                        Turi
                        wrote on last edited by
                        #23

                        @jsulm Sorry, my bad. With Qt 5.15.2 my application works fine. Thank you.
                        So, is this a bug of older versions?

                        1 Reply Last reply
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                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #24

                          There was a bug with QSerialPort on Windows but IIRC it has been also fixed for the 5.12 series if you really need it. But you have to update to the latest release of that series.

                          Interested in AI ? www.idiap.ch
                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                          • Christian EhrlicherC Offline
                            Christian EhrlicherC Offline
                            Christian Ehrlicher
                            Lifetime Qt Champion
                            wrote on last edited by
                            #25

                            Here the bug report for this issue: https://bugreports.qt.io/browse/QTBUG-78086

                            Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                            Visit the Qt Academy at https://academy.qt.io/catalog

                            1 Reply Last reply
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