00> <info> app_timer: RTC: initialized.
00> 
00> <debug> nrf_ble_lesc: Initialized nrf_crypto.
00> 
00> <debug> nrf_ble_lesc: Initialized nrf_ble_lesc.
00> 
00> <debug> nrf_ble_lesc: Generating ECC key pair
00> 
00> <info> app: Heart Rate Sensor example started.
00> 
00> <info> app: Fast advertising.
00> 
00> <debug> nrf_ble_gatt: Requesting to update ATT MTU to 247 bytes on connection 0x0.
00> 
00> <debug> nrf_ble_gatt: Updating data length to 251 on connection 0x0.
00> 
00> <info> app: ble evt:16.
00> 
00> <info> app: Connected.
00> 
00> <debug> nrf_ble_gatt: ATT MTU updated to 247 bytes on connection 0x0 (response).
00> 
00> <info> app: GATT ATT MTU on connection 0x0 changed to 247.
00> 
00> <info> app: ble evt:58.
00> 
00> <debug> nrf_ble_gatt: Data length updated to 251 on connection 0x0.
00> 
00> <debug> nrf_ble_gatt: max_rx_octets: 27
00> 
00> <debug> nrf_ble_gatt: max_tx_octets: 251
00> 
00> <debug> nrf_ble_gatt: max_rx_time: 328
00> 
00> <debug> nrf_ble_gatt: max_tx_time: 2120
00> 
00> <info> app: ble evt:36.
00> 
00> <info> app: ble evt:18.
00> 
00> <info> app: ble evt:18.
00> 
00> <info> peer_manager_handler: Event PM_EVT_CONN_SEC_START
00> 
00> <info> peer_manager_handler: Event PM_EVT_CONN_SEC_PARAMS_REQ
00> 
00> <info> app: ble evt:19.
00> 
00> <debug> app: BLE_GAP_EVT_SEC_PARAMS_REQUEST
00> 
00> <debug> nrf_ble_lesc: BLE_GAP_EVT_LESC_DHKEY_REQUEST
00> 
00> <info> app: ble evt:24.
00> 
00> <info> app: BLE_GAP_EVT_LESC_DHKEY_REQUEST
00> 
00> <info> nrf_ble_lesc: Calling sd_ble_gap_lesc_dhkey_reply on conn_handle: 0
00> 
00> <info> app: ble evt:21.
00> 
00> <info> app: ble evt:18.
00> 
00> <info> peer_manager_handler: Event PM_EVT_CONN_SEC_FAILED
00> 
00> <info> peer_manager_handler: Connection security failed: role: Peripheral, conn_handle: 0x0, procedure: Bonding, error: 1
00> 
00> <info> app: ble evt:25.
00> 
00> <info> app: BLE_GAP_EVT_AUTH_STATUS: status=0x1 bond=0x0 lv4: 0 kdist_own:0x0 kdist_peer:0x0
00> 
00> <info> app: Fast advertising.
00> 
00> <info> app: ble evt:17.
00> 
00> <info> app: Disconnected, reason 19.
00>