nrf_sdh: State request: 0x00000000 nrf_sdh: Notify observer 0x00036434 => ready nrf_sdh: State change: 0x00000000 nrf_sdh: State change: 0x00000001 nrf_sdh_ble: RAM starts at 0x200029A0 app: Heart Rate collector example started. app: Starting scan. nrf_sdh_ble: BLE event: 0x1D. app: UUID match send connect_request. nrf_sdh_ble: BLE event: 0x10. ble_gatt: Requesting to update ATT MTU to 247 bytes on connection 0x0. ble_gatt: Requesting to update data length to 251 on connection 0x0. app: Connected to a previously bonded device. app: Connected. ble_db_disc: Starting discovery of service with UUID 0x180D on connection handle 0x0. nrf_sdh_ble: BLE event: 0x3A. ble_gatt: ATT MTU updated to 232 bytes on connection 0x0 (response). app: GATT ATT MTU on connection 0x0 changed to 232. ble_db_disc: Starting discovery of service with UUID 0x180D on connection handle 0x0. nrf_sdh_ble: BLE event: 0x24. ble_gatt: Data length updated to 236 on connection 0x0. ble_gatt: max_rx_octets: 236 ble_gatt: max_tx_octets: 236 ble_gatt: max_rx_time: 2120 ble_gatt: max_tx_time: 2120 app: Data length for connection 0x0 updated to 236. nrf_sdh_ble: BLE event: 0x30. ble_db_disc: Found service UUID 0x180D. nrf_sdh_ble: BLE event: 0x23. ble_gatt: Peer on connection 0x0 requested a data length of 236 bytes. ble_gatt: Updating data length to 236 bytes on connection 0x0. nrf_sdh_ble: BLE event: 0x24. ble_gatt: Data length updated to 236 on connection 0x0. ble_gatt: max_rx_octets: 236 ble_gatt: max_tx_octets: 236 ble_gatt: max_rx_time: 2120 ble_gatt: max_tx_time: 2000 app: Data length for connection 0x0 updated to 236. nrf_sdh_ble: BLE event: 0x32. nrf_sdh_ble: BLE event: 0x32. nrf_sdh_ble: BLE event: 0x33. ble_db_disc: Discovery of service with UUID 0x180D completed with success on connection handle 0x0. ble_db_disc: Starting discovery of service with UUID 0x180F on connection handle 0x0. nrf_sdh_ble: BLE event: 0x30. ble_db_disc: Found service UUID 0x180F. nrf_sdh_ble: BLE event: 0x32. nrf_sdh_ble: BLE event: 0x32. nrf_sdh_ble: BLE event: 0x33. ble_db_disc: Discovery of service with UUID 0x180F completed with success on connection handle 0x0. ble_hrs_c: Heart Rate Service discovered at peer. app: Heart rate service discovered. ble_hrs_c: Configuring CCCD. CCCD Handle = 38, Connection Handle = 0 ble_bas_c: Battery Service discovery failure at peer. ble_bas_c: Battery Service discovered at peer. app: Battery Service discovered. Reading battery level. ble_bas_c: SD Read/Write API returns error. This message sending will be attempted again.. app: Enabling Battery Level Notification. ble_bas_c: Configuring CCCD. CCCD Handle = 42, Connection Handle = 0 ble_bas_c: SD Read/Write API returns error. This message sending will be attempted again.. nrf_sdh_ble: BLE event: 0x38. ble_bas_c: SD Read/Write API returns Success.. nrf_sdh_ble: BLE event: 0x1A. app: Connection secured: role: 2, conn_handle: 0x0, procedure: 0. nrf_sdh_ble: BLE event: 0x39. ble_hrs_c: Received HVX on link 0x25, hrm_handle 0x25 app: Heart Rate = 0. nrf_sdh_ble: BLE event: 0x36. app: Battery Level Read as 60 %. ble_bas_c: SD Read/Write API returns Success.. nrf_sdh_ble: BLE event: 0x1A. app: Connection secured: role: 2, conn_handle: 0x0, procedure: 0. nrf_sdh_ble: BLE event: 0x38. nrf_sdh_ble: BLE event: 0x39. ble_hrs_c: Received HVX on link 0x25, hrm_handle 0x25 app: Heart Rate = 0. nrf_sdh_ble: BLE event: 0x39. ble_hrs_c: Received HVX on link 0x25, hrm_handle 0x25 app: Heart Rate = 92. nrf_sdh_ble: BLE event: 0x39. ble_hrs_c: Received HVX on link 0x25, hrm_handle 0x25 app: Heart Rate = 92. nrf_sdh_ble: BLE event: 0x39. ble_hrs_c: Received HVX on link 0x25, hrm_handle 0x25 app: Heart Rate = 92. nrf_sdh_ble: BLE event: 0x39. ble_hrs_c: Received HVX on link 0x25, hrm_handle 0x25 app: Heart Rate = 0. nrf_sdh_ble: BLE event: 0x11. app: Disconnected, reason 0x13. app: Starting scan. nrf_sdh_ble: BLE event: 0x1D. app: UUID match send connect_request. nrf_sdh_ble: BLE event: 0x10. ble_gatt: Requesting to update ATT MTU to 247 bytes on connection 0x0. ble_gatt: Requesting to update data length to 251 on connection 0x0. app: Connected to a previously bonded device. app: Connected. ble_db_disc: Starting discovery of service with UUID 0x180D on connection handle 0x0. nrf_sdh_ble: BLE event: 0x3A. ble_gatt: ATT MTU updated to 232 bytes on connection 0x0 (response). app: GATT ATT MTU on connection 0x0 changed to 232. ble_db_disc: Starting discovery of service with UUID 0x180D on connection handle 0x0. nrf_sdh_ble: BLE event: 0x24. ble_gatt: Data length updated to 236 on connection 0x0. ble_gatt: max_rx_octets: 236 ble_gatt: max_tx_octets: 236 ble_gatt: max_rx_time: 2120 ble_gatt: max_tx_time: 2120 app: Data length for connection 0x0 updated to 236. nrf_sdh_ble: BLE event: 0x23. ble_gatt: Peer on connection 0x0 requested a data length of 236 bytes. ble_gatt: Updating data length to 236 bytes on connection 0x0. nrf_sdh_ble: BLE event: 0x24. ble_gatt: Data length updated to 236 on connection 0x0. ble_gatt: max_rx_octets: 236 ble_gatt: max_tx_octets: 236 ble_gatt: max_rx_time: 2120 ble_gatt: max_tx_time: 2000 app: Data length for connection 0x0 updated to 236. nrf_sdh_ble: BLE event: 0x30. ble_db_disc: Found service UUID 0x180D. nrf_sdh_ble: BLE event: 0x32. nrf_sdh_ble: BLE event: 0x32. nrf_sdh_ble: BLE event: 0x33. ble_db_disc: Discovery of service with UUID 0x180D completed with success on connection handle 0x0. ble_db_disc: Starting discovery of service with UUID 0x180F on connection handle 0x0. nrf_sdh_ble: BLE event: 0x30. ble_db_disc: Found service UUID 0x180F. nrf_sdh_ble: BLE event: 0x32. nrf_sdh_ble: BLE event: 0x32. nrf_sdh_ble: BLE event: 0x33. ble_db_disc: Discovery of service with UUID 0x180F completed with success on connection handle 0x0. ble_hrs_c: Heart Rate Service discovered at peer. app: Heart rate service discovered. ble_hrs_c: Configuring CCCD. CCCD Handle = 38, Connection Handle = 0 ble_bas_c: Battery Service discovery failure at peer. ble_bas_c: Battery Service discovered at peer. app: Battery Service discovered. Reading battery level. ble_bas_c: SD Read/Write API returns error. This message sending will be attempted again.. app: Enabling Battery Level Notification. ble_bas_c: Configuring CCCD. CCCD Handle = 42, Connection Handle = 0 ble_bas_c: SD Read/Write API returns error. This message sending will be attempted again.. nrf_sdh_ble: BLE event: 0x38. ble_bas_c: SD Read/Write API returns Success.. nrf_sdh_ble: BLE event: 0x1A. nrf_sdh_ble: BLE event: 0x39. ble_hrs_c: Received HVX on link 0x25, hrm_handle 0x25 app: Heart Rate = 0. nrf_sdh_ble: BLE event: 0x36. app: Battery Level Read as 60 %. ble_bas_c: SD Read/Write API returns Success.. nrf_sdh_ble: BLE event: 0x1A. nrf_sdh_ble: BLE event: 0x38. nrf_sdh_ble: BLE event: 0x39. ble_hrs_c: Received HVX on link 0x25, hrm_handle 0x25 app: Heart Rate = 0. nrf_sdh_ble: BLE event: 0x39. ble_hrs_c: Received HVX on link 0x25, hrm_handle 0x25 app: Heart Rate = 0. nrf_sdh_ble: BLE event: 0x39. ble_hrs_c: Received HVX on link 0x25, hrm_handle 0x25 app: Heart Rate = 0.