Pair Device with Legacy Connection OOB preshared key, using Android NRF connect

[Beldramma]

Hi,

I am working on NRF52832-based board, with SDK 15.2.

My BLE device is protected with Legacy Connection OOB preshared key.

I would like to use Android NRF Connect app to pair with my device, filling my OOB key.

I can be in pairing mode and fill my key in NRF Connect Desktop, but not with NRF Connect app.

I don't find any button to do that. There is only a button to bond, so I have added the bonding mode in my application, but I haven't succeeded to bond also.

DO you know how I can pair with my security parameters ? If I can do it only through bonding mode, can you help me resolve my problem ?

I have already checked these others subjects, but they haven't succeeded too :

https://devzone.nordicsemi.com/f/nordic-q-a/47932/oob-works-with-mcp-but-fails-with-nrf-connect

https://devzone.nordicsemi.com/f/nordic-q-a/60196/how-to-enter-oob-key-in-nrf-connect-app

https://devzone.nordicsemi.com/f/nordic-q-a/43338/android-pairing-without-bonding---nrf-connect/172332#172332

Thanks

[Simonr]

Hi Antoine

Yes, try to connect to your device without using nRFConnect. If you go into the settings on the phone, you should have a "Bluetooth menu" where you can scan for, connect, and pair to Bluetooth devices. 

The three dots next to the DEBUG tab in the nRFConnect app for Android should have a "share" or "copy to clipboard" button function depending on the nRFConnect version.

If you have an extra nRF51 or nRF52 Development Kit/Dongle you can use the nRF Sniffer for BLE to take a sniffer trace of the connection.

Best regards,

Simon