Timer Apps : how to use it to just count time since the timer start

[#1]

I tried to use the Timer Apps to get the current time since the timer is started, but it doesn’t seem working;
Look at the following code :
Inside the infinite loop, the value elapsedTime receive the result of TIMER_GetTime(&TIMER_0).
It should increase at each loop right ? However, at the third loop, the value decrease, and increase again.

I configured the App with CCU8, a time interval of 1000 us, and no time interval event.
I don’t need to generate event, but I don’t know how to choose the timer resolution (From 0 to 1 count, the time taken is 1ms for example).
With a time interval of 1000 us, I have the following :
initTime = 119
timerRunning = 1
1. elapsedTime = 62730
2. elapsedTime = 2844
3. elapsedTime = 40827
4. elapsedTime = 41261
5. elapsedTime = 13538

The result should increase at each loop, or it seem random.

int main(void)
{
  DAVE_STATUS_t status;
  TIMER_STATUS_t timer_status;
  uint32_t initTime;
  uint32_t elapsedTime;

	uint32_t i,j,k = 0;
uint32_t test = 0;
uint8_t timerRunning = 0;
  status = DAVE_Init();           /* Initialization of DAVE APPs  */

  if(status != DAVE_STATUS_SUCCESS)
  {
    /* Placeholder for error handler code. The while loop below can be replaced with an user error handler. */
    XMC_DEBUG("DAVE APPs initialization failed\n");

    while(1U)
    {

    }
  }

	TIMER_Start(&TIMER_0);
	if ( TIMER_GetTimerStatus(&TIMER_0)) // TIMER_GetTimerStatus(&TIMER_0) : return true = timer is running
	{

		initTime = TIMER_GetTime(&TIMER_0);
		timerRunning = 1;
	}


  /* Placeholder for user application code. The while loop below can be replaced with user application code. */
  while(1U)
  {

	  	j = 0;
		for (i=0; i<365000; i++)
		{
		  j = i+1;
		}
		j = 0;

	  elapsedTime = TIMER_GetTime(&TIMER_0);
  }
}

Any help please ?


Nicolas