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Serial Data "reading" disorder

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arduinoseriesbuffer
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  • F ftsm

    @mrjj Thank you.
    I used differents letters as separator because i wanted to reconize each data. Indeed I can just use one separator but it means that I have to gather all the data in the good order.
    ".append" seams like a good way but my problem is that I can't know the size of my expected bytes. Each potentiometer can send 1 to 4 digits. I assume there are already solutions for that, but I don't know what ...

    mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by
    #6

    @ftsm
    Ah ok, yes if they can come out of order then same separator is not a option.

    -Each potentiometer can send 1 to 4 digits
    so maybe there comes 1 byte or maybe 4 ?

    F 1 Reply Last reply
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    • mrjjM mrjj

      @ftsm
      Ah ok, yes if they can come out of order then same separator is not a option.

      -Each potentiometer can send 1 to 4 digits
      so maybe there comes 1 byte or maybe 4 ?

      F Offline
      F Offline
      ftsm
      wrote on last edited by
      #7

      @mrjj Indeed. And so if I try ".append" I will have a huge disorder in datas ...
      I'm still trying to figure out a way to get everything in order but nothing work fine yet

      mrjjM 1 Reply Last reply
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      • F ftsm

        @mrjj Indeed. And so if I try ".append" I will have a huge disorder in datas ...
        I'm still trying to figure out a way to get everything in order but nothing work fine yet

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

        @ftsm
        but how does the potentiometer send its data ?
        you have no control over the format?

        F 1 Reply Last reply
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        • mrjjM mrjj

          @ftsm
          but how does the potentiometer send its data ?
          you have no control over the format?

          F Offline
          F Offline
          ftsm
          wrote on last edited by
          #9

          @mrjj The potentiometer send its data via Arduino. I can write how I want to send it. First I tried with "," to separate, but I could'nt reconize wich data was what. So I tried with a specific letter before and after each potentiometer value. In this case it is really hard for me to extract the potentiometer value from the line (from serial) because I only know the "split" technic

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #10

            Mix both techniques: an ID to know what kind of data you have and the "special" char to know where to split.

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

            F 1 Reply Last reply
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            • SGaistS SGaist

              Mix both techniques: an ID to know what kind of data you have and the "special" char to know where to split.

              F Offline
              F Offline
              ftsm
              wrote on last edited by
              #11

              @SGaist Yes I think that is my best move, that's what I'm currently trying to do.
              But I have a last problem: how can I try the existence of a string from QstringList ? For example I need to know if after spliting "buffer_split[1]" exist ?

              mrjjM 1 Reply Last reply
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              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #12

                You can use a while loop and take the first element at each iteration so no need for a particular check.

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

                F 1 Reply Last reply
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                • F ftsm

                  @SGaist Yes I think that is my best move, that's what I'm currently trying to do.
                  But I have a last problem: how can I try the existence of a string from QstringList ? For example I need to know if after spliting "buffer_split[1]" exist ?

                  mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by
                  #13

                  @ftsm
                  also QstringList has a size() that tells the number of elements. (strings)
                  That also gives hints to valid index.

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                  • SGaistS SGaist

                    You can use a while loop and take the first element at each iteration so no need for a particular check.

                    F Offline
                    F Offline
                    ftsm
                    wrote on last edited by
                    #14

                    @SGaist @mrjj Thank you for that, I managed to split correctly and find the right data.
                    But I am still able to do that only on debug mode, when I try to run the program it's like i'm going too fast and my "->ReadAll()" don't gather enought data. (I saw that with some qDebug()).
                    So I go back to my first problem, if I use a while loop with "append" I will mix the data.
                    Can't I use "waitForReadyRead()" ?

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                    • F Offline
                      F Offline
                      ftsm
                      wrote on last edited by
                      #15

                      OH MY GOD that was the solution since the begining !! It's 1:30am and it's perfectly working !!

                      THank you guys I love you so much !!

                      YAAaaaaaayyy my first beautiful program on Qt and it rules !! THANK YOU

                      mrjjM 1 Reply Last reply
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                      • F ftsm

                        OH MY GOD that was the solution since the begining !! It's 1:30am and it's perfectly working !!

                        THank you guys I love you so much !!

                        YAAaaaaaayyy my first beautiful program on Qt and it rules !! THANK YOU

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

                        @ftsm
                        Congratulations with the baby ;)

                        1 Reply Last reply
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