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Ble advertising and timer conflict

Hi

I would like to ask you for advice on how to solve my problem with Ble and the timer I have nRf52840 and I am trying to add a timer to examples\ble_peripheral\ble_app_uart timer works properly unless advertising_start(); and then the timer conflict with Ble begins. Does anyone have a solution to this problem ? I am adding part of the timer code and also photos where to see my problem.

#define GPIO_24       NRF_GPIO_PIN_MAP(0,24)

void timer_init(void)
{
    NRF_TIMER2->TASKS_STOP = 1;

    NRF_TIMER2->SHORTS    = (TIMER_SHORTS_COMPARE0_CLEAR_Enabled << TIMER_SHORTS_COMPARE0_CLEAR_Pos);
    NRF_TIMER2->MODE      = TIMER_MODE_MODE_Timer;
    NRF_TIMER2->BITMODE   = (TIMER_BITMODE_BITMODE_24Bit << TIMER_BITMODE_BITMODE_Pos);
    NRF_TIMER2->PRESCALER = 1;  
    NRF_TIMER2->INTENSET  = (TIMER_INTENSET_COMPARE0_Set << TIMER_INTENSET_COMPARE0_Pos);

    NRF_TIMER2->CC[0]       = 100;

    NRF_TIMER2->TASKS_START = 1;
	NVIC_EnableIRQ(TIMER2_IRQn);
} 

void TIMER2_IRQHandler(void)
{
    if (NRF_TIMER2->EVENTS_COMPARE[0])
    {
       nrf_gpio_pin_toggle(GPIO_24);
	   NRF_TIMER2->EVENTS_COMPARE[0] = 0;
    }
}

not start advertising