nrf51 lpcomp doesn't work

Question

Hi,
this is how I initialize and enable LPCOMP 
 nrf_drv_lpcomp_config_t lpcompconfig = {
 {NRF_LPCOMP_REF_SUPPLY_SEVEN_EIGHT, NRF_LPCOMP_DETECT_CROSS},
 APP_IRQ_PRIORITY_LOW,
 NRF_LPCOMP_INPUT_7};
 nrf_drv_lpcomp_init(&lpcompconfig, &lpcomphandler);
 nrf_drv_lpcomp_enable();
 
 However, my 
 void lpcomphandler(nrf_lpcomp_event_t event);
 
 is never called when I manually toggle P0.06 pin of nrf51 from GND to VCC, or from VCC to GND. 
 No matter whether I initialize and enable LPCOMP before or after softdevice initialization. 
 I use SDK9.0.0. 
 Can you please help?

gaminn · Accepted Answer

I used custom low level LPCOMP driver (not the one included in SDK):

void LPCOMP_init(void)
{	
	NRF_LPCOMP->INTENSET = LPCOMP_INTENSET_UP_Msk;
	NVIC_EnableIRQ(LPCOMP_IRQn);	

	NRF_LPCOMP->REFSEL |= (LPCOMP_REFSEL_REFSEL_SupplySevenEighthsPrescaling << LPCOMP_REFSEL_REFSEL_Pos);
	NRF_LPCOMP->PSEL |= (LPCOMP_PSEL_PSEL_AnalogInput7 << LPCOMP_PSEL_PSEL_Pos);

	NRF_LPCOMP->ENABLE = LPCOMP_ENABLE_ENABLE_Enabled;	
   NRF_LPCOMP->TASKS_START = 1;
}

Now LPCOMP works for me. I have no clue why it doesn't work with SDK driver.