nRF51 Relay example - bonding problem

[Crllo]

Hi,

I've encountered a problem during development of an application based on ble_app_hrs_rscs_relay.

Everything works fine (I mean concurrent central and peripheral roles) except for the fact that when I try to perform bonding operation the connection is immediately lost.

This happens for both my modified application and the code provided with SDK 9.0 I base on. I've tried with other (peripheral) examples compiling it with S130 support and bonding is performed without any problems.

Has anyone encountered such problem and could help with solving it?

[Susheel Nuguru]

can you please give me exact setup details to replicate the problem. Like which board did you use, Which SD version exactly did you use on collector and sensor boards as mentioned here?

[Crllo]

Hi everyone,

I've found solution so I share it in order to spare you some time in case you've encountered the problem too ;)

The relay example just doesn't support pairing and thus bonding isn't supported either (correct me if I'm wrong about that dependency). It is explicitly said in line 612 of the main.c file. In case of pairing request it is simply declined (sd_ble_gap_sec_params_reply(m_conn_handle_peripheral, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL)).

I've modified the code accordingly to other examples which support pairing and bonding. I can't share the code but in case anyone needs help with that feel free to contact me.

[Crllo]

Hi Aryan, I've been using provided examples without any modifications. The reason behind my problem is described below. Thanks for your interest!

[Susheel Nuguru]

not all example have considered pairing and bonding, but it is just the matter of implementing the event. Pairing is the needed phase for bonding to happen, so if no pairing, then no bonding. So your dependency assumption is correct.

[Richard von Lehe]

It might be worth noting that the relay example doesn't support a pairing request with the relay peripheral. However, the relay is acting as a central with respect to the rscs and hrs peripherals and does attempt to pair/bond with those if I'm not mistaken.