NRF51-ble-peripheral-bond-handling example

[GEO]

When i setup DEVICE_MANAGER_MAX_BONDS in 2 and trying to connect third device the nRF 51422 (10028) is freezing and all LED's light up. Why the algorithm in "device_manager_evt_handler" does't work?

[Vidar Berg]

I meant to say the values passed to the app_error_handler: uint32_t error_code, uint32_t line_num and const uint8_t * p_file_name.

Just right click on the variables and add to watch while debugging like shown in the screenshot below.

UPDATE 24.07.2015 #1

I have not been able to recreate the problem on my end. Please try with the application that I compiled here where max bonds is set to '2' and see if it still asserts: nrf51422_xxac_s110.hex

You can use nrfgo studio to program it. First, make sure to do a full erase first to clear any existing bonds, then program s110 v.8.0.0 and then the attached application.

UPDATE 24.07.2015 #2

Ok, was able to recreate the issue now. I have been using iOS devices when testing the code here which use private resolvable addresses as opposed to static ones with older versions of Android.

Please try to replace 'table_index.mr_cnt_val++;' at line ~679 in main.c with the following lines:

    if(table_index.mr_index != p_handle->device_id)
    {
        //Increment counter variable for last bond for the new device
        table_index.mr_cnt_val++;
    }

UPDATE 25.07.2015

Uploaded fix to nRF51-ble-peripheral-bond-handling on Github which should work for more than two bonds as well.

The other error you got is actually an event result from the DM telling the application that pairing failed with 0x00000081 (BLE_GAP_SEC_STATUS_PASSKEY_ENTRY_FAILED). In other words, it seems like iOS may require MITM protection if you do bonding in settings->Bluetooth rather than doing it in the nRFtoolbox app.To avoid this you can use nRFtoolbox instead. Just make sure to clear the existing bond Bluetooth settings reboot the phone first to stop it from reconnecting outside the app.

[GEO]

m_error_code == 0x00008010; m_line_num == 0x0000004E; m_p_file_name == 0x00018D94 "...\app_bond.c".

[Vidar Berg]

Thanks for the update. The error you are seeing originates from app_bond.c at line 78 and indicates that an invalid address is supplied to dm_application_context_set(). That is , p_handle->device_id does not exist in the bond table.

Are you doing anything different in you app compared to the one posted on Github? Is the app_bond_update_context(); for instance called on DM_EVT_DEVICE_CONTEXT_STORED event?

[GEO]

I am reinstalled SDK, download NRF51-ble-peripheral-bond-handling example and copying to the ble_peripheral examples folder, then opened project in arm5_no_packs (Keil 5.15), set DEVICE_MANAGER_MAX_BONDS == 2 (was 8) in device_manager_cnfg.h start debug mode and connect device -> called the device_manager_evt_handler() with DM_EVT_DEVICE_CONTEXT_STORED event... In normal operation mode (without debug) the application freeze when i connect third device

[GEO]

Thanks Vidar, i attach the code to line 679 and it work good.