HardFault when calling any sd_ function from radio notification event handler

[drk_tg]

Hi,

I'm using S132 v2.0.0 and nrf52832. I've got a problem when I'm trying to call any softdevice function from radio notification event handler.

#define RADIO_NOTIFICATION_IRQ_PRIORITY      3
#define RADIO_NOTIFICATION_DISTANCE 	     NRF_RADIO_NOTIFICATION_DISTANCE_NONE

void radio_notification_init(void)
{
    err_code=ble_radio_notification_init(RADIO_NOTIFICATION_IRQ_PRIORITY,RADIO_NOTIFICATION_DISTANCE,radio_notification_evt_handler);
    APP_ERROR_CHECK(err_code);
    
    err_code = sd_radio_notification_cfg_set(NRF_RADIO_NOTIFICATION_TYPE_INT_ON_INACTIVE, RADIO_NOTIFICATION_DISTANCE);
    APP_ERROR_CHECK(err_code);
}

void radio_notification_evt_handler(bool radio_evt)
{
    m_addl_adv_manuf_data[INC_TEST_INDEX]++;

    uint32_t err_code = sd_ble_gap_adv_data_set(m_addl_adv_manuf_data, sizeof(m_addl_adv_manuf_data), NULL, 0);
    APP_ERROR_CHECK(err_code);
}

What can cause this behavior?

[RK]

#define RADIO_NOTIFICATION_IRQ_PRIORITY      3

That causes it, this is discussed multiple times a week, a search whould have given you this answer.

That's higher than the SVC call priority so you will hardfault calling SVC from that IRQ level and all the sd_* functions are implemented as service calls.

[drk_tg]

I thought that value 3 corresponds to APP_IRQ_PRIORITY_LOW however nRF52 have more priority levels and in my case value should be set to 6. Thanks for help.