timer

[wala]

Hi,

I was wondering: I have a timer. Inside the timer callback I have a function that should be running once the timer is ON. but I notice that this function is beeing executed 5 times before exit. any explaination?

[RobertoBozzolo]

Are you filtering events inside the callback? You should execute the code only for EVENT_TIMER_TICK event, otherwise the callback could be executed for other events like EVENT_DISCARD and so on.

[wala]

Here is what I have:  

int CVICALLBACK timer3 (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
 switch (event)
 {
  case EVENT_TIMER_TICK:
   
   enablingTest();
   
   break;
 }
 return 0;
}

enablingTest() function is just a function executing without any delay or sleep inside.

Some variable in this functions will be used by other. Which seems to create a delay of about 4 sec as this function is executing about 4 times before exit.

also to mention, in my application I have 2 other timers but they running other functions independant to this.

[RobertoBozzolo]

Which is the timer interval? And how long takes the function to execute?

Could you print some debug informations to help discriminating how it is working? Something like that:

int CVICALLBACK timer3 (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
 double tini;

 switch (event)
 {
  case EVENT_TIMER_TICK:
   tini = Timer ();
   enablingTest();
   DebugPrintf ("%s Inside the switch. Time taken: %.2f\n", TimeStr (), Timer () - tini);
   break;
 }
 DebugPrintf (%s Out of the switch. Event %d\n" TimeStr (), event);
 return 0;
}