question about scanning in ble_app_hrs_rscs_relay

Question

Is there any reason I could not modify this demo to use IRK values and allow whitelist scanning based on stored IRK values? I'm wondering why the demo seems to have an option to use a whitelist, but never changes m_scan_mode to turn it on? Also, it is only set up to use addresses in the whitelist and not IRK values. Why would it not also use IRK values that might be stored? 
 Thanks

Anders Strand · Accepted Answer

Hi. 
 If you change m_scan_mode to BLE_WHITELIST_SCAN, it will use whitelist and stored IRK values if the whitelist contains any entries. The whitelist will be populated if we have bonded with a device.