NRF Timer doesn't start

Question

Hi,

In my application I need an interrupt every 8us that I use as basetime, so I add a nrf timer to my code in the following way:

in the prj.conf

CONFIG_NRFX_TIMER1=y
CONFIG_NRFX_TIMER2=y

In the application:

#include <nrfx_timer.h>
#include <irq.h>

static const nrfx_timer_t mIrTimer = NRFX_TIMER_INSTANCE(2);
static volatile uint64_t mIrTimerCounter = 0;

static void irTimerHandler (nrf_timer_event_t event_type, void *p_context) 
{
    mIrTimerCounter += 8;
}

static bool startIrTimer (void) 
{
    nrfx_err_t errCode;

    nrfx_timer_config_t tmrConfig = NRFX_TIMER_DEFAULT_CONFIG;
    tmrConfig.frequency           = NRF_TIMER_FREQ_125kHz;
    tmrConfig.mode                = NRF_TIMER_MODE_TIMER;
    tmrConfig.bit_width           = NRF_TIMER_BIT_WIDTH_32;
    //tmrConfig.interrupt_priority  = NRFX_TIMER_DEFAULT_CONFIG_IRQ_PRIORITY;

    errCode = nrfx_timer_init(&mIrTimer,&tmrConfig,irTimerHandler);
    if (errCode != NRFX_SUCCESS) 
    {
		return false;
	}

    // Interrupt every 10us
    //nrfx_timer_extended_compare(&mIrTimer,NRF_TIMER_CC_CHANNEL1,10,NRF_TIMER_SHORT_COMPARE1_CLEAR_MASK, true);

	IRQ_CONNECT(TIMER2_IRQn,2,nrfx_timer_2_irq_handler, NULL,0);

    nrfx_timer_clear(&mIrTimer);
    nrfx_timer_enable(&mIrTimer);

    return true;
}

I call the function startIrTimer() and the function return without any error, but the callback is never called. Where is it the problem?

Best

Marco