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UI doesnt refresh correctly

Scheduled Pinned Locked Moved Unsolved General and Desktop
qt5serial portuser interface
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  • D deleted286

    @mrjj I did it like that. But i dont know why in some data, progress bar doesnt refresh.

    mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by
    #8

    @suslucoder

    well if dont move the bar, the most logical conclusion is that it gets the same value as before.

    So put in
    qDebug() << "-->"<< dizi[1] << dizi[2]<< dizi[3]<< dizi[4]<< dizi[5]<< dizi[6];
    in on_joystick (in top)
    and see when it dont move what data, if it still has the same value as before.

    D 1 Reply Last reply
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    • mrjjM mrjj

      @suslucoder

      well if dont move the bar, the most logical conclusion is that it gets the same value as before.

      So put in
      qDebug() << "-->"<< dizi[1] << dizi[2]<< dizi[3]<< dizi[4]<< dizi[5]<< dizi[6];
      in on_joystick (in top)
      and see when it dont move what data, if it still has the same value as before.

      D Offline
      D Offline
      deleted286
      wrote on last edited by
      #9

      @mrjj said in UI doesnt refresh correctly:

      qDebug() << "-->"<< dizi[1] << dizi[2]<< dizi[3]<< dizi[4]<< dizi[5]<< dizi[6];

      I've checked, coming datas are true. Is there anything about threads? I have serial port and i have a gui. There may be something different about it

      mrjjM 1 Reply Last reply
      0
      • D deleted286

        @mrjj said in UI doesnt refresh correctly:

        qDebug() << "-->"<< dizi[1] << dizi[2]<< dizi[3]<< dizi[4]<< dizi[5]<< dizi[6];

        I've checked, coming datas are true. Is there anything about threads? I have serial port and i have a gui. There may be something different about it

        mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by
        #10

        @suslucoder
        Hi
        Only if you added threads yourself. else it cant be the issue.

        So that data is right in top of on_joystick ?
        that you are very sure about ?

        Since we dont clear dizi between readyRead
        it will have old values.

        So waht excactly do you see ?
        first it work, then it stops. or it never works ?

        D 1 Reply Last reply
        0
        • mrjjM mrjj

          @suslucoder
          Hi
          Only if you added threads yourself. else it cant be the issue.

          So that data is right in top of on_joystick ?
          that you are very sure about ?

          Since we dont clear dizi between readyRead
          it will have old values.

          So waht excactly do you see ?
          first it work, then it stops. or it never works ?

          D Offline
          D Offline
          deleted286
          wrote on last edited by
          #11
          This post is deleted!
          mrjjM 1 Reply Last reply
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          • D deleted286

            This post is deleted!

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by
            #12

            @suslucoder
            Well it cant really be stuck as such.
            It means its current value is 15.

            You dont have any loops or anything that would prevent it from redrawing ?

            I think you will have to use the debugger and set breakpoint on the

            ui->progressBarXXXX

            and then see when you set data what it is.

            Its very unlikely the Widget simply don't redraw as that normally makes them white/odd if
            you have strangulated the event loop.

            D 1 Reply Last reply
            1
            • mrjjM mrjj

              @suslucoder
              Well it cant really be stuck as such.
              It means its current value is 15.

              You dont have any loops or anything that would prevent it from redrawing ?

              I think you will have to use the debugger and set breakpoint on the

              ui->progressBarXXXX

              and then see when you set data what it is.

              Its very unlikely the Widget simply don't redraw as that normally makes them white/odd if
              you have strangulated the event loop.

              D Offline
              D Offline
              deleted286
              wrote on last edited by
              #13

              @mrjj I didnt understand what you mean. Am i doing something wrong?

              mrjjM 1 Reply Last reply
              0
              • D deleted286

                @mrjj I didnt understand what you mean. Am i doing something wrong?

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by mrjj
                #14

                @suslucoder
                Hi
                Nope code looks fine but you seem think the widget would suddenly stop to draw and
                they rarely do and if they do, then it's very clear as it then looked messed up.

                So Im trying to guess at what could be wrong/go wrong.
                I think its just something with the data but you seems sure the values are newer and higher than 15 so
                I would like you to set a break point on the line where you set the progressbar value
                and then run & stop and inspect value in the dubugger to be truely sure that a value higher than 15 comes.

                other note, this line
                memcpy(dizi, data.constData(), 14);

                If less than 14 data comes, then old values are left in dizi.
                and what happens if data.constData() is less than 14 ?

                I think its something like that.

                D 1 Reply Last reply
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                • mrjjM mrjj

                  @suslucoder
                  Hi
                  Nope code looks fine but you seem think the widget would suddenly stop to draw and
                  they rarely do and if they do, then it's very clear as it then looked messed up.

                  So Im trying to guess at what could be wrong/go wrong.
                  I think its just something with the data but you seems sure the values are newer and higher than 15 so
                  I would like you to set a break point on the line where you set the progressbar value
                  and then run & stop and inspect value in the dubugger to be truely sure that a value higher than 15 comes.

                  other note, this line
                  memcpy(dizi, data.constData(), 14);

                  If less than 14 data comes, then old values are left in dizi.
                  and what happens if data.constData() is less than 14 ?

                  I think its something like that.

                  D Offline
                  D Offline
                  deleted286
                  wrote on last edited by
                  #15

                  @mrjj data.constData() cant be less than 14. I set it. Its too weird

                  mrjjM 1 Reply Last reply
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                  • D deleted286

                    @mrjj data.constData() cant be less than 14. I set it. Its too weird

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by mrjj
                    #16

                    @suslucoder
                    Hi
                    What you mean ?
                    You dont set it at all

                    QByteArray data = serial->readAll(); <<< this can read all from 1 to xxx bytes

                    s= data.size(); << this is the size of data we read
                    if (s>14)  << is is just some variable not related to data
                        s=14;
                    

                    then we copy 14 from data
                    memcpy(dizi, data.constData(), 14);

                    so it dont matter how much data we actually got. we always copy 14

                    D 1 Reply Last reply
                    2
                    • mrjjM mrjj

                      @suslucoder
                      Hi
                      What you mean ?
                      You dont set it at all

                      QByteArray data = serial->readAll(); <<< this can read all from 1 to xxx bytes

                      s= data.size(); << this is the size of data we read
                      if (s>14)  << is is just some variable not related to data
                          s=14;
                      

                      then we copy 14 from data
                      memcpy(dizi, data.constData(), 14);

                      so it dont matter how much data we actually got. we always copy 14

                      D Offline
                      D Offline
                      deleted286
                      wrote on last edited by
                      #17

                      @mrjj said in UI doesnt refresh correctly:

                      @suslucoder
                      Hi
                      What you mean ?

                      I have

                      int16_t dizi[7];
                      

                      Since I have an array which size is 7, i wrote something

                      s= data.size(); 
                      if (s>14)  
                          s=14;
                      
                      mrjjM 1 Reply Last reply
                      0
                      • D deleted286

                        @mrjj said in UI doesnt refresh correctly:

                        @suslucoder
                        Hi
                        What you mean ?

                        I have

                        int16_t dizi[7];
                        

                        Since I have an array which size is 7, i wrote something

                        s= data.size(); 
                        if (s>14)  
                            s=14;
                        
                        mrjjM Offline
                        mrjjM Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on last edited by
                        #18

                        @suslucoder

                        But what do you then do with s to make it do anything ?

                        D 1 Reply Last reply
                        0
                        • mrjjM mrjj

                          @suslucoder

                          But what do you then do with s to make it do anything ?

                          D Offline
                          D Offline
                          deleted286
                          wrote on last edited by
                          #19

                          @mrjj Im just try to convert my binary data do int with that code script

                          mrjjM 1 Reply Last reply
                          0
                          • D deleted286

                            @mrjj Im just try to convert my binary data do int with that code script

                            mrjjM Offline
                            mrjjM Offline
                            mrjj
                            Lifetime Qt Champion
                            wrote on last edited by mrjj
                            #20

                            @suslucoder

                            ok im not sure what s does.

                            Anyway, could you try

                            (in on_Serial_Read)
                            memset(dizi, 0, 14);
                            memcpy(dizi, data.constData(), data.size());

                            in place ot the line
                            memcpy(dizi, data.constData(), 14);

                            and tell if it still stops at 15 ?

                            1 Reply Last reply
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