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Error While writing Library for Gy521

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  • vishnumaiea
    vishnumaiea last edited by 26 Apr 2020, 10:02

    When you want to create an object of a class and it doesn't take in any parameters, then

    Gy521 goo;  //object declaration
    

    is enough. Then invoke the initialization function,

    goo.begin();  //initialization
    

    For that, you need to create an initialization function. You can copy the statements in your constructor there.

    rafitc99 1 Reply Last reply 26 Apr 2020, 10:24 Reply Quote 1
    • rafitc99
      rafitc99 @vishnumaiea last edited by 26 Apr 2020, 10:24

      @vishnumaiea Thank you. I made the changes, it worked well.
      Next, I want to return 3 variables in getAcData() function. Is there any way to do this ? Can i access AcX,AcY,AcZ globally via main code.

      vishnumaiea 1 Reply Last reply 26 Apr 2020, 10:29 Reply Quote 1
      • vishnumaiea
        vishnumaiea @rafitc99 last edited by 26 Apr 2020, 10:29

        @rafitc99 The member variables of a class can not be accessed without an accompanying object; that's the concept of a class. If you want to return three values, simply update the member variables AcX, Ac and AcZ, and access them as,

        Serial.println(goo.AcX);
        Serial.println(goo.AcY);
        Serial.println(goo.AcZ);
        
        rafitc99 1 Reply Last reply 26 Apr 2020, 11:09 Reply Quote 2
        • rafitc99
          rafitc99 @vishnumaiea last edited by 26 Apr 2020, 11:09

          @vishnumaiea

          Serial.println(goo.AcX);
          Serial.println(goo.AcY);
          Serial.println(goo.AcZ);
          

          while using above code, I'm getting '0'. not updating,

          saheen_palayi 1 Reply Last reply 1 May 2020, 13:28 Reply Quote 0
          • saheen_palayi
            saheen_palayi @rafitc99 last edited by 1 May 2020, 13:28

            @rafitc99 is it fixed ?,u found a solution?

            rafitc99 1 Reply Last reply 1 May 2020, 17:35 Reply Quote 0
            • rafitc99
              rafitc99 @saheen_palayi last edited by 1 May 2020, 17:35

              @saheen_palayi Nop, while calling goo.AcX getting zero as output. not getting updated value.

              saheen_palayi 1 Reply Last reply 2 May 2020, 16:12 Reply Quote 0
              • saheen_palayi
                saheen_palayi @rafitc99 last edited by 2 May 2020, 16:12

                @rafitc99 I dont think u can access those like that did you tried those lines after

                 goo.getAcData();
                 goo.getGyData();
                
                rafitc99 1 Reply Last reply 4 May 2020, 06:45 Reply Quote 1
                • rafitc99
                  rafitc99 @saheen_palayi last edited by 4 May 2020, 06:45

                  @saheen_palayi yeah! that was the problem. Now it's worked. Thank you @saheen_palayi and @vishnumaiea

                  salmanfaris 1 Reply Last reply 4 May 2020, 06:46 Reply Quote 1
                  • salmanfaris
                    salmanfaris @rafitc99 last edited by 4 May 2020, 06:46

                    @rafitc99 What was the solution?

                    rafitc99 1 Reply Last reply 4 May 2020, 06:50 Reply Quote 0
                    • rafitc99
                      rafitc99 @salmanfaris last edited by rafitc99 4 May 2020, 06:51 4 May 2020, 06:50

                      @salmanfaris forgot to call function getAcData() and getGyData() before goo.AcX... 😂

                      1 Reply Last reply Reply Quote 2
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                        WhatsApp Image 2024-04-12 at 10.40.06_c7d1947e.jpg WhatsApp Image 2024-04-12 at 10.40.05_897b8bb6.jpg
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