Hello. The project that I'm working requires both central and peripheral role support, working simultaneously. There are times where, while advertising in the peripheral, I want to use the whitelist and device identities list (I use the peer manager to for this). In my central role, I am at times scanning and establishing connections, but I don't ever need or want to use the whitelist or device identity list.
In my testing, I am getting errors when I follow the below sequence of events:
1. Start scanning via call to sd_ble_gap_scan_start. Note that I'm not using the whitelist and not using directed advertisements.
2. While in the middle of scanning I'd like to advertise with the whitelist enabled. Before I start advertising, I call pm_whitelist_set to specify the peers that I would like to whitelist with. This call succeeds.
3. Next, I call pm_device_identities_list_set to provide the same peer ID. This call returns the error BLE_ERROR_GAP_DEVICE_IDENTITIES_IN_USE.
From within the peer manager I can see that the error is coming from the call to sd_ble_gap_device_identities_set. In the description for sd_ble_gap_device_identities_set, there is a comment that "The device identity list cannot be set if a BLE role is using the list." I don't understand why I'm getting this error. Since my scanning has both the use_whitelist and adv_dir_report fields set to 0, the device identity list should not already be in use.
It's strange because my call to pm_whitelist_set (which results in a call to sd_ble_gap_whitelist_set) succeeds, and sd_ble_gap_whitelist_set has a similar note about not working while in use.
I did a quick test to stop scanning (via a call to sd_ble_gap_scan_stop) immediately before calling pm_device_identities_list_set, and I no longer get the error. I imagine that to get around this issue I could do this in my application, and then immediately restart scanning after the call to pm_device_identities_list_set; however this is not a very desirable solution and adds a lot of complexity to my application.
Any idea why I might be getting this error?
Thanks!
