APP_ERROR_CHECK() and ZigBee stack

[Michal]

Hello everyone,

I have a question regarding logging errors on debug console (UART or RTT) while using ZigBee stack:

My problem is that I can't get any debug print when APP_ERROR_CHECK() occurs. Application just hangs in zb_nrf52840_abort() without printing any useful info.
Normally, in application without ZigBee stack, I can define my custom app_error_fault_handler() or just get info from weak function in app_error_weak.c. But it's impossible with ZigBee stack since it declares its own app_error_fault_handler() inside libzboss.a
I have found this question (https://devzone.nordicsemi.com/f/nordic-q-a/47312/custom-application-error-handler-zigbee) where Nordic's Engineer wrote that  app_error_fault_handler() inside libzboss.a should print the same info as handler from app_error_weak.c but I can't see any print.

So, the question is: How get debug print on APP_ERROR_CHECK() with ZigBee stack?

Test environment:

  nRF5SDKforThreadandZigbeev310c7c4730/examples/multiprotocol/ble_zigbee/ble_zigbee_dynamic_light_switch_nus/pca10056 example compiled with GCC and added APP_ERROR_CHECK(1); just under first print:

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/**@brief Function for application main entry.

*/

int main(void)

{

zb_ret_t zb_err_code;

/* Initialize loging system and GPIOs. */

log_init();

timer_init();

leds_buttons_init();

/* Bluetooth initialization. */

ble_stack_init();

/* NUS Commander initialization. */

nus_init(NULL);

/* Add commands to NUS */

add_nus_commands();

/* Initialize Zigbee stack. */

zigbee_init();

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

/**@brief Function for application main entry.
 */
int main(void)
{
    zb_ret_t   zb_err_code;

    /* Initialize loging system and GPIOs. */
    log_init();
    timer_init();
    leds_buttons_init();

    /* Bluetooth initialization. */
    ble_stack_init();
    /* NUS Commander initialization. */
    nus_init(NULL);
    
    /* Add commands to NUS */
    add_nus_commands();

    /* Initialize Zigbee stack. */
    zigbee_init();

#ifdef ARDUINO_JOYSTICK_SHIELD_V1A
    /* Initialize the Joystick routines. */
    joystick_init(joystick_cb);
#endif

    /* Start execution. */
    NRF_LOG_INFO("BLE Zigbee dynamic light switch example started.");
    APP_ERROR_CHECK(1); // Test debug print
    
    /** Start Zigbee Stack. */
    zb_err_code = zboss_start();
    ZB_ERROR_CHECK(zb_err_code);

    while(1)
    {
        zboss_main_loop_iteration();
        UNUSED_RETURN_VALUE(NRF_LOG_PROCESS());
    }
}

Best regards,

Michal