ANCS example is not allowing connection to a different iPhone after disconnect

[Andrew]

While attempting to test multiple iPhone models on the ANCS example, I'm finding that even after I forget the nRF DK from the iPhone's Bluetooth menu, I have to reset the board with button 2 held to erase bonds before I'm able to connect to a different iPhone. Without doing this, the iPhone's connection appears to be refused immediately by the board without sending any bluetooth event notices or system event notices.

So while I am fairly sure this behavior is because of the device manager module, I'm trying to figure out how to handle this from an application standpoint.

Is there a setting in device_manager_cnfg.h that can be changed to handle more phones?

Is there something I can call in the DM module after a disconnect that will allow another phone to connect after the first one disconnects?

Is there a reason no event is sent out when the connection is refused?

[Andrew]

I'll answer this myself:

In advertising_init()

set

options.ble_adv_whitelist_enabled = BLE_ADV_WHITELIST_ENABLED;

to

options.ble_adv_whitelist_enabled = BLE_ADV_WHITELIST_DISABLED;

[Hung Bui]

Hi Andrew,

There is a chance that the iPhone changed the IRK when you erased the bond information with the board so that whitelist won't be able to recognize the phone again. You can check this by using a sniffer to check if the phone changed the address or not.

To disable whitelist when advertising, you can long press button 2 as described here.