nRF52840 bonded devices

[Dani]

Good morning,

I have my BLE application developed on the nRF52840 and S140.

My application is perfectly working and I'm able to bond (pin required) any Android smartphone.

At this point I have two questions:

1.- Is there any limit regarding the number of smartphones I can bond to a device? If yes, how can I manage this?

2.- When doing same operation with an Apple device, Smartphone is never asking for a pin code. Why? Is there any different setting for this?

Dani.

[Kenneth]

Dani said:

I suppose you mean to call pm_peer_count() in while() loop (main). And in what regards call to pm_peer_ranks_get and pm_peer_delete: which is the best place to implement them? In the same while loop or inside a certain event in pm_evt_handler? And, it is necessary to call pm_peer_rang_highest() when the event PM_EVT_BONDED_PEER_CONNECTED is given?

I would suggest to only call pm_peer_count() in the beginning of main() and on disconnect event. If pm_peer_count() > N, then call pm_peer_ranks_get() to get the 'p_lowest_ranked_peer' and delete it by calling pm_peer_delete(lowest_ranked_peer). There is no need to call pm_peer_rang_highest() from the application, it will already be handled by peer manager if you have enabled PM_PEER_RANKS_ENABLED in sdk_config.h and running pm_handler_flash_clean().

[Dani]

OK. Thank you. I'll implement it...

And what about my last comment:: IoS connection and PM_EVT_CONN_SEC_FAILED? Debugging I've seen that reported error (p_evt.params.conn_sec_failed.error) is 0x0088

[Dani]

Do you have any other suggestion regarding IoS fucntionality? 

I've followed gls example, and everything seems to match but I continue having the same problem when being requested for the passkey: impossible to connect!!

Dani

[Kenneth]

Are you able to make an on-air sniffer log using nrf sniffer?
https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Sniffer-for-Bluetooth-LE
https://infocenter.nordicsemi.com/topic/ug_sniffer_ble/UG/sniffer_ble/intro.html 

Best regards,
Kenneth

[Dani]

Hi Kenneth,

I've sniffer already working, but what information do you need to be catched?

As I'm using a 8-digit passkey, I have entered this passkey into Wireshark passkey field. This is right?

I'm deeping a bit more into this application, but meanwhile, if you can detail the information that is useful for you, it will be great!!!

All the best,

Dani.