How to read value of timer in CAPL?

Question

variables
{
    mstimer T1;
    long x,y;
}

on start
{
    setTimer(T1,1); /*Timer set to 1ms*/
    x=timeNow()/100000.0; /*Getting a time stamp when i start a timer*/
}

on timer T1
{
  if(response==0)         /*Check if response is sent or a function*/ has completed successfully*/ /*CONDITION*/
  {
    cancelTimer(T1);      /*Cancel timer if response is correct*/
    y=timeNow()/100000.0; /*Getting a timestamp when i stop a timer.*/
    write("Total time taken is %d",y-x);    /*Getting the time required to complete the condition (response==0)*/
  }
  else /*Setting timer again to check the condition*/
  {
    setTimer(T1,1);
    write("Timer started again");
  }
}

the value (y-x) always shows 1ms as the timer is set to 1ms, but what if the condition has become true at 0.7ms. I wanted the exact time at which the condition became true.

I have used timeNow function to get the timestamps.

Answer 1

As many have already pointed out, I believe you are using on timer uncorrectly. From Vector knowledge base,

You can define time events in CAPL. When this event occurs, i.e. when a certain period of time elapses, the associated on timer procedure is called.

From what I see here, by performing your boolean check inside on timer, you will always read the current time elapsed at the end of the timer. If you want to exit the timer prematurely due to a certain condition happening, I would suggest a complete workaround. Have you tried setting a system variable?