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QTimer make traitement out of for loop ?

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #12

    That's one way of implementing it.

    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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    • I Offline
      I Offline
      imene
      wrote on last edited by imene
      #13

      @SGaist is there a way more easy than that ? with another type of timer ?
      can i use this signal void QTimer::timeout()?

      M 1 Reply Last reply
      0
      • I imene

        @SGaist is there a way more easy than that ? with another type of timer ?
        can i use this signal void QTimer::timeout()?

        M Offline
        M Offline
        mpergand
        wrote on last edited by mpergand
        #14

        @imene
        For your long delay, you can use lambda as well,
        Although I don't see any real benefit with it.

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        • I Offline
          I Offline
          imene
          wrote on last edited by
          #15

          @mpergand
          What do you mean with lamba ?

          jsulmJ 1 Reply Last reply
          0
          • I imene

            @mpergand
            What do you mean with lamba ?

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

            @imene C++ lambda functions: https://en.cppreference.com/w/cpp/language/lambda

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

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            • I Offline
              I Offline
              imene
              wrote on last edited by
              #17

              QTimer::singleShot :This static function calls a slot after a given time interval; in my case i want the code to make the traitement inside QTimer::singleShot before it pass to make the next if condition .

              Christian EhrlicherC 1 Reply Last reply
              0
              • I imene

                QTimer::singleShot :This static function calls a slot after a given time interval; in my case i want the code to make the traitement inside QTimer::singleShot before it pass to make the next if condition .

                Christian EhrlicherC Offline
                Christian EhrlicherC Offline
                Christian Ehrlicher
                Lifetime Qt Champion
                wrote on last edited by
                #18

                @imene said in QTimer make traitement out of for loop ?:

                to make the traitement inside QTimer::singleShot before it pass to make the next if condition .

                Let the QTimer::singleShot() fire and check for your codition inside the slot.

                Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
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                • I Offline
                  I Offline
                  imene
                  wrote on last edited by
                  #19

                  @Christian-Ehrlicher how ?

                  Christian EhrlicherC 1 Reply Last reply
                  0
                  • I imene

                    @Christian-Ehrlicher how ?

                    Christian EhrlicherC Offline
                    Christian EhrlicherC Offline
                    Christian Ehrlicher
                    Lifetime Qt Champion
                    wrote on last edited by Christian Ehrlicher
                    #20

                    @imene said in QTimer make traitement out of for loop ?:

                    how ?

                    if (yourCoditionIsMet) {
                      doSomethingYouWant()
                    }
                    

                    maybe?

                    Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
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                    • I Offline
                      I Offline
                      imene
                      wrote on last edited by
                      #21

                      @Christian-Ehrlicher
                      my condition is to wait for QTimer::singleShot() to be executed

                      Christian EhrlicherC 1 Reply Last reply
                      0
                      • I imene

                        @Christian-Ehrlicher
                        my condition is to wait for QTimer::singleShot() to be executed

                        Christian EhrlicherC Offline
                        Christian EhrlicherC Offline
                        Christian Ehrlicher
                        Lifetime Qt Champion
                        wrote on last edited by
                        #22

                        @imene said in QTimer make traitement out of for loop ?:

                        my condition is to wait for QTimer::singleShot() to be executed

                        Why?
                        If you want to stop a timer, use a QTimer object and stop it if you want.

                        Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
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                        • I Offline
                          I Offline
                          imene
                          wrote on last edited by
                          #23

                          This timer

                          connect(m_speedTimer, &QTimer::timeout, this, &MainWindow::on_Send_Row_Button_clicked);
                          
                          
                           if( trameRecu[0]==trameTest[0]){
                                          qDebug() <<"Test FF good!"; //model dialogue informing
                                          mModel->item(b, 4)->setText("FF");//ack
                                         
                          
                                          m_speedTimer->start(8000);
                          
                          
                                                 QTimer::singleShot(7000, [=](){
                                              qDebug()<<"Timer on do something after 7000 msec...";
                          
                          
                                          if((Send_Frame_Get_ACK_Function(SetPayloadRPM))=="FF")
                          
                                          { qDebug()  << "Send_Frame_Get_ACK_Function Pass" ;
                          
                                              QString MySpeed=0;
                          
                                            MySpeed = Send_Frame_Get_Speed_Function(NSetPayload); //SetPayloadMem="F504"
                                            qDebug()  << " MySpeed" <<MySpeed;
                          
                                            double MSpeed = MySpeed.toFloat();
                                              qDebug()  << " MSpeed" <<MSpeed;
                                            bool result = ((MSpeed >= 40) && (MSpeed <= 60));
                                                    qDebug() << "((MSpeed >= 40) && (MSpeed <= 60))" << result;
                                                    result = ((MSpeed >= 90) && (MSpeed <= 110)  );
                                                    qDebug() << "((MSpeed >= 90) && (MSpeed <= 110))" << result;
                                                    result = ((MSpeed >= 490) && (MSpeed <= 520)  );
                                                    qDebug() << "((MSpeed >= 490) && (MSpeed <= 520))" << result;
                          
                                            if ((MSpeed > 40) && (MSpeed < 60)  )
                          
                                            {mModel->item(b, 6)->setText("+50");}//result
                          
                                            else if ((MSpeed > 90) && (MSpeed < 110))
                                            {mModel->item(b, 6)->setText("+100");}//result
                          
                                            else if ((MSpeed > 140) && (MSpeed < 160))
                                            {mModel->item(b, 6)->setText("+150");}//result
                          
                                            else if ((MSpeed > 190) && (MSpeed < 210))
                                            {mModel->item(b, 6)->setText("+200");}//result
                          
                                            else if ((MSpeed > 240) && (MSpeed < 260))
                                            {mModel->item(b, 6)->setText("+100");}//result
                          
                                            else if ((MSpeed > 290) && (MSpeed < 310))
                                            {mModel->item(b, 6)->setText("+100");}//result
                          
                          
                                            else if ((MSpeed >490) && (MSpeed < 520))
                                            {mModel->item(b, 6)->setText("+500");}//result
                                            else
                                            {mModel->item(b, 6)->setText("Error");
                                            qDebug()  << " MSpeed if" <<MSpeed;}//result
                          
                          
                                          }
                          
                                          m_speedTimer->stop();
                          
                                         });//singleshot timer here
                          
                                      }
                          

                          m_speedTimer->start(8000);
                          repeat the traitement under it each 8000 but when i use m_speedTimer->stop(); it make traitement one time and stops without waiting 8000 msec!
                          I need a timer that make traitement after 8000msec.

                          Christian EhrlicherC 1 Reply Last reply
                          0
                          • I imene

                            This timer

                            connect(m_speedTimer, &QTimer::timeout, this, &MainWindow::on_Send_Row_Button_clicked);
                            
                            
                             if( trameRecu[0]==trameTest[0]){
                                            qDebug() <<"Test FF good!"; //model dialogue informing
                                            mModel->item(b, 4)->setText("FF");//ack
                                           
                            
                                            m_speedTimer->start(8000);
                            
                            
                                                   QTimer::singleShot(7000, [=](){
                                                qDebug()<<"Timer on do something after 7000 msec...";
                            
                            
                                            if((Send_Frame_Get_ACK_Function(SetPayloadRPM))=="FF")
                            
                                            { qDebug()  << "Send_Frame_Get_ACK_Function Pass" ;
                            
                                                QString MySpeed=0;
                            
                                              MySpeed = Send_Frame_Get_Speed_Function(NSetPayload); //SetPayloadMem="F504"
                                              qDebug()  << " MySpeed" <<MySpeed;
                            
                                              double MSpeed = MySpeed.toFloat();
                                                qDebug()  << " MSpeed" <<MSpeed;
                                              bool result = ((MSpeed >= 40) && (MSpeed <= 60));
                                                      qDebug() << "((MSpeed >= 40) && (MSpeed <= 60))" << result;
                                                      result = ((MSpeed >= 90) && (MSpeed <= 110)  );
                                                      qDebug() << "((MSpeed >= 90) && (MSpeed <= 110))" << result;
                                                      result = ((MSpeed >= 490) && (MSpeed <= 520)  );
                                                      qDebug() << "((MSpeed >= 490) && (MSpeed <= 520))" << result;
                            
                                              if ((MSpeed > 40) && (MSpeed < 60)  )
                            
                                              {mModel->item(b, 6)->setText("+50");}//result
                            
                                              else if ((MSpeed > 90) && (MSpeed < 110))
                                              {mModel->item(b, 6)->setText("+100");}//result
                            
                                              else if ((MSpeed > 140) && (MSpeed < 160))
                                              {mModel->item(b, 6)->setText("+150");}//result
                            
                                              else if ((MSpeed > 190) && (MSpeed < 210))
                                              {mModel->item(b, 6)->setText("+200");}//result
                            
                                              else if ((MSpeed > 240) && (MSpeed < 260))
                                              {mModel->item(b, 6)->setText("+100");}//result
                            
                                              else if ((MSpeed > 290) && (MSpeed < 310))
                                              {mModel->item(b, 6)->setText("+100");}//result
                            
                            
                                              else if ((MSpeed >490) && (MSpeed < 520))
                                              {mModel->item(b, 6)->setText("+500");}//result
                                              else
                                              {mModel->item(b, 6)->setText("Error");
                                              qDebug()  << " MSpeed if" <<MSpeed;}//result
                            
                            
                                            }
                            
                                            m_speedTimer->stop();
                            
                                           });//singleshot timer here
                            
                                        }
                            

                            m_speedTimer->start(8000);
                            repeat the traitement under it each 8000 but when i use m_speedTimer->stop(); it make traitement one time and stops without waiting 8000 msec!
                            I need a timer that make traitement after 8000msec.

                            Christian EhrlicherC Offline
                            Christian EhrlicherC Offline
                            Christian Ehrlicher
                            Lifetime Qt Champion
                            wrote on last edited by
                            #24

                            @imene said in QTimer make traitement out of for loop ?:

                            t make traitement one time and stops without waiting 8000 msec!

                            Then remember that you want to stop your timer after the next timeout and stop it then.

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                            Visit the Qt Academy at https://academy.qt.io/catalog

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                            • I Offline
                              I Offline
                              imene
                              wrote on last edited by
                              #25

                              What does m_speedTimer->start(8000); and m_speedTimer->stop(); do exactely ?

                              Christian EhrlicherC 1 Reply Last reply
                              0
                              • I imene

                                What does m_speedTimer->start(8000); and m_speedTimer->stop(); do exactely ?

                                Christian EhrlicherC Offline
                                Christian EhrlicherC Offline
                                Christian Ehrlicher
                                Lifetime Qt Champion
                                wrote on last edited by Christian Ehrlicher
                                #26

                                @imene said in QTimer make traitement out of for loop ?:

                                What does m_speedTimer->start(8000); and m_speedTimer->stop(); do exactely ?

                                Really??

                                RTM https://doc.qt.io/qt-6/qtimer.html

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

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                                • I Offline
                                  I Offline
                                  imene
                                  wrote on last edited by imene
                                  #27

                                  I want a timer that stop reading the code for 7sec then complete and execute the function, because singleShot timer execute function after 7 sec here:

                                  QTimer::singleShot(7000, [=](){
                                                      qDebug()<<"Timer on do something after 6 second...";
                                  
                                  
                                                 // i want to set a time out condition here
                                  
                                                 });//timer ends here
                                  
                                  Christian EhrlicherC 1 Reply Last reply
                                  0
                                  • I imene

                                    I want a timer that stop reading the code for 7sec then complete and execute the function, because singleShot timer execute function after 7 sec here:

                                    QTimer::singleShot(7000, [=](){
                                                        qDebug()<<"Timer on do something after 6 second...";
                                    
                                    
                                                   // i want to set a time out condition here
                                    
                                                   });//timer ends here
                                    
                                    Christian EhrlicherC Offline
                                    Christian EhrlicherC Offline
                                    Christian Ehrlicher
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #28

                                    @imene said in QTimer make traitement out of for loop ?:

                                    qDebug()<<"Timer on do something after 6 second...";

                                    QTimer::singleShot(7000, ={

                                    Maybe you should at least add a correct comment...

                                    We already told you how to start a timer, how to stop it and how you set a (member) variable to not execute something if this variable is set to a certain value is nothing we need to discuss here - it's a task for a c++ beginners book.

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

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                                    • I Offline
                                      I Offline
                                      imene
                                      wrote on last edited by
                                      #29

                                      what i have to do ?

                                      QObject::connect(m_speedTimer,&QTimer::timeout, this, &MainWindow::sendFrame,Qt::AutoConnection);
                                      
                                      void MainWindow::sendFrame(QString IdData_R,QString PayloadData_R,int i)
                                      {
                                      
                                                  if (m_canDevice)
                                              {   m_speedTimer->start(6000);
                                              ...
                                               }
                                      
                                      }
                                      
                                      void MainWindow::on_SendAll_Button_clicked()
                                      {int a= m_ui->Table_CSV->model()->rowCount();
                                       for(int i=0;i<a; i++) //R :read , W :write
                                          { sendFrame(IdData_R, PayloadData_R,i);//});
                                           }
                                          
                                          m_speedTimer->stop();
                                          
                                       }
                                      

                                      513347e1-0444-4877-aa5d-fbcd337e5af2-image.png

                                      M 1 Reply Last reply
                                      0
                                      • I imene

                                        what i have to do ?

                                        QObject::connect(m_speedTimer,&QTimer::timeout, this, &MainWindow::sendFrame,Qt::AutoConnection);
                                        
                                        void MainWindow::sendFrame(QString IdData_R,QString PayloadData_R,int i)
                                        {
                                        
                                                    if (m_canDevice)
                                                {   m_speedTimer->start(6000);
                                                ...
                                                 }
                                        
                                        }
                                        
                                        void MainWindow::on_SendAll_Button_clicked()
                                        {int a= m_ui->Table_CSV->model()->rowCount();
                                         for(int i=0;i<a; i++) //R :read , W :write
                                            { sendFrame(IdData_R, PayloadData_R,i);//});
                                             }
                                            
                                            m_speedTimer->stop();
                                            
                                         }
                                        

                                        513347e1-0444-4877-aa5d-fbcd337e5af2-image.png

                                        M Offline
                                        M Offline
                                        mpergand
                                        wrote on last edited by
                                        #30

                                        @imene
                                        your code doesn't make sense.
                                        What do you want to do,
                                        send a frame every 6s ?

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