Secure UART Pairing for Central and Peripheral Examples

[Aashay]

Hey guys, I am using 2 nRF52832 boards with a PCA10040. I program my boards with the BLE UART central and peripheral examples. I was wondering if it is possible to, and if so how to, make the pairing process secure between the 2 boards. As of now, after I program the examples, the boards just connect automatically and both LED1's turn on. I was wondering if we could make the pairing process start after pressing BUTTON1 on the boards. And then when they successfully pair, the LED1's turn on. Any help is great. If you know how to do it or have done something similar, please share in detail or even share your code if you're willing. Thanks!!

[Sigurd]

Hi,

Aashay said:

I was wondering if it is possible to, and if so how to, make the pairing process secure between the 2 boards.

You will need to add the peer manager to the NUS examples in order to support pairing/bonding. You should take a look at another example on how it is done, for example ble_app_hrs.

[Aashay]

so how would i integrate that into my main.c for my uart example

[Sigurd]

Start by adding the relevant peer manger code to your main.c, with ble_app_hrs as reference. Remember to remove handling of the BLE_GAP_EVT_SEC_PARAMS_REQUEST and the BLE_GATTS_EVT_SYS_ATTR_MISSING event in the on_ble_evt() callback as these shall be handled internally by the peer manager. 

[Aashay]

I don't have much experience in this. I don't know how to add relevant peer manager code or even what code is relevant.