Getting device address in ble_app_hrs central

[zamek]

Hi All, I am a beginner in nrf52. I need to get the client device address in ble_app_hrs_central, because I have more than one devices connected. There is a hrs_c_evt_handler in the main.c which is called when a client sent a new heart rate value. I can found the conn_handle which may identify the connection. I need to get the device address assigned this connection. How can I get it?

thx Zamek

[endnode]

You get peer address at BLE_GAP_EVT_CONNECTED event (see ble_gap_evt_connected_t structure).

[zamek]

Yes, I found it, but unfortunately, when a heart rate coming, I don't know which device sent it. I have more than one device, so I have to find the address of the current heart device, at a BLE_HRS_C_EVT_HRM_NOTIFICATION event. At that time I have only conn_handle.

[endnode]

You need to back up peer address for each connection handle, then any event happens it is linked to one specific connection handle so you know which peer it was.

[zamek]

Ok, good idea, but when BLE_GAP_EVT_CONNECTED event happened, there is ble_gap_evt_t structure which has a union named params and I can use ble_gap_evt_connected structure. It has a ble_gap_addr_t which contains the peer address and a ble_gap_conn_params which contains min_conn_interval, max_conn_interval, slave_latency and conn_sup_timeout only. Seems to be there is no connect handle at this phase:( Unfortunately I have no idea how can I make a link between peer address and connection handle.

[endnode]

Like m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle; ? It's basically in every SDK example, just read them.