How to detect binding information lost?

Question

Hi all, 
 
 I'm using nrf51822 and ble_app_multirole_lesc example on SDK 12.3. 
 When I connect with "nrf connect" Android application for the first time, the bind is established and the communication is secure. 
 After that, I deleted the bond information from the mobile phone and I tried to reconnect again, nRF accepts the connection and calls "PM_EVT_PEER_DATA_UPDATE_SUCCEEDED" event. 
 1-How can this happen? 
 2-Is there an event called (nRF side) to detect that the mobile has lost the binding information? 
 
 Best regards.

Edvin · Accepted Answer

So do you have allow_repairing = true? 
 
 1: no 
 2: yes. The ble_app_gls example does this. It starts a timer in the connected event. In the timeout handler (sec_req_timeout_handler) it will ask to pair with the central. Check out this example. 
 pm_conn_secure(conn_handle, force_repairing); 
 force repairing is a bool value which will force re-pairing if true. 
 
 Best regards, 
 Edvin

How to detect binding information lost?

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