What do LEDs 0 and 1 indicate in the ble_proximity sample app?

Question

Here are some constants from main.c for the other LEDs, but what do LEDs 0 and 1 indicate? 0 seems to be on when advertising. 1 when connected? What about pairing/bonding state? 
 #define ALERT_LEVEL_MILD_LED_PIN_NO NRF6310_LED_2 / < Is on when we are in Mild Alert state. */
#define ALERT_LEVEL_HIGH_LED_PIN_NO NRF6310_LED_3 / < Is on when we are in High Alert state. */
#define ADV_INTERVAL_SLOW_LED_PIN_NO NRF6310_LED_4 / < Is on when we are doing slow advertising. */
#define PEER_SRV_DISC_LED_PIN_NO NRF6310_LED_5 / < Is on when the Immediate Alert Service has been discovered at the peer. */
#define ADV_WHITELIST_LED_PIN_NO NRF6310_LED_6 /**< Is on when we are doing advertising with whitelist. */

Audun · Accepted Answer

Hi Eliot, 
 as you say, LED 0 is set when advertising, and LED 1 is set when connected. There is no LED activity that indicates pairing state. 
 If you want main.c to handle bond-related events, you should implement the evt_handler provided in ble_bondmngr_init() . See bond_manager_init in main.c.
For example: 
 
static void bond_manager_event_handler(ble_bondmngr_evt_t * p_evt)
{
 switch (p_evt->evt_type)
 {
 case BLE_BONDMNGR_EVT_NEW_BOND:
 break;
 
 case BLE_BONDMNGR_EVT_CONN_TO_BONDED_MASTER:
 break;
 
 case BLE_BONDMNGR_EVT_ENCRYPTED:
 break;
 
 case BLE_BONDMNGR_EVT_AUTH_STATUS_UPDATED:
 break;
 
 case BLE_BONDMNGR_EVT_BOND_FLASH_FULL:
 break;
 
 default:
 // Unexpected event
 APP_ERROR_CHECK_BOOL(false);
 break;
 }
}


/**@brief Function for the Bond Manager initialization.
 */
static void bond_manager_init(void)
{
 uint32_t err_code;
 ble_bondmngr_init_t bond_init_data;
 bool bonds_delete;

 // Clear all bonded masters if the Bonds Delete button is pushed
 err_code = app_button_is_pushed(BONDMNGR_DELETE_BUTTON_PIN_NO, &bonds_delete);
 APP_ERROR_CHECK(err_code);
 
 // Initialize the Bond Manager
 bond_init_data.flash_page_num_bond = FLASH_PAGE_BOND;
 bond_init_data.flash_page_num_sys_attr = FLASH_PAGE_SYS_ATTR;
 bond_init_data.evt_handler = bond_manager_event_handler; // This wasnt here originally
 bond_init_data.error_handler = bond_manager_error_handler;
 bond_init_data.bonds_delete = bonds_delete;
 
 err_code = ble_bondmngr_init(&bond_init_data);
 APP_ERROR_CHECK(err_code);
}