void main(void)
{
while(1)
{

//interrupt from timer capture compare
if(timer_comp0)
{
timer_comp0 = 0;
ADC_Start(ADC0, adcStartSingle);
//ADC_Start(ADC0, adcStartScan);
}

//interrupt from ADC
if(adc_transfer_complete)
{
adc_transfer_complete = 0;

//do something
}

//interrupt from timer overflow
if(timer_uf)
{
//do something

//EMU_EnterEM1();
//EMU_EnterEM2(false);
}

if (sysFlags&MEAS_MODE)
{

if (sysFlags&PULSE100)
{
//do somrthing
}

if (sysFlags&PULSE1000)
{
//do something
}
}


if (sysFlags&UPDATE_MAIN_COUNTER)
{
//do something
}

//interrupt from LEUART-RX
if( rx_packet_recieved)
{
//do something
}

EMU_EnterEM2(true);

} //while

/* Never going to reach this statement. */
return 0;
}

void LETIMER_Setup(void)
{
  /* Enable necessary clocks */
    CMU_ClockSelectSet(cmuClock_LETIMER0, cmuSelect_LFXO);
   CMU_ClockEnable(cmuClock_LETIMER0, true);

  LETIMER_CompareSet(LETIMER0, 0, LOAD0);


  /* Set configurations for LETIMER 0 */
  const LETIMER_Init_TypeDef letimerInit =
  {
  .enable         = true,                   /* Start counting when init completed. */
  .debugRun       = false,                  /* Counter shall not keep running during debug halt. - false */
  .rtcComp0Enable = false,                  /* Don't start counting on RTC COMP0 match. */
  .rtcComp1Enable = false,                  /* Don't start counting on RTC COMP1 match. */
  .comp0Top       = false,                  /* Load COMP0 register into CNT when counter underflows. COMP0 is used as TOP else TOP = 0xFFFF */
  .bufTop         = false,                  /* Don't load COMP1 into COMP0 when REP0 reaches 0. */
  .out0Pol        = 0,                      /* Idle value for output 0. */
  .out1Pol        = 0,                      /* Idle value for output 1. */
  .ufoa0          = letimerUFOANone,         /* PWM output on output 0 */
  .ufoa1          = letimerUFOANone,       /* Pulse output on output 1*/
  .repMode        = letimerRepeatFree       /* Count until stopped */
  };

    /* Initialize LETIMER */
    LETIMER_Init(LETIMER0, &letimerInit);

     /* Enable underflow interrupt */
    LETIMER_IntEnable(LETIMER0, LETIMER_IF_COMP0 | LETIMER_IF_UF);

    /* Enable LETIMER0 interrupt vector in NVIC*/
    NVIC_EnableIRQ(LETIMER0_IRQn);
}