[S110][nrf51822] Device Manager getting bonded devices

[paulus]

How can I read list of bonded devices from flash with using Device Manager ?

[Petter Myhre]

You can use dm_whitelist_create() to get a list of addresses and IRKs to currently bonded devices.

[paulus]

Unfortunatelly it does not work. I have 3 bonded devices but this function returns 0 for fields pp_addrs and pp_irks. This is my code located in function device_manager_evt_handler

    if (p_event->event_id ==  DM_EVT_DEVICE_CONTEXT_LOADED)
    {
	   ble_gap_addr_t    *pp_addrs[DEVICE_MANAGER_MAX_BONDS]; 
      ble_gap_irk_t       *pp_irks[DEVICE_MANAGER_MAX_BONDS];

   ble_gap_whitelist_t  whitelist;
   memset(&whitelist, 0, sizeof(whitelist));
   whitelist.pp_addrs = pp_addrs;
   whitelist.pp_irks = pp_irks;

   err_code = dm_whitelist_create(&m_app_handle, &whitelist);
    }

Also I was trying to do this by using dm_peer_addr_get

for (int i=0; i< DEVICE_MANAGER_MAX_BONDS; i++)
{
	dm_handle_t dHandle;
	dHandle.appl_id = 1;
	dHandle.device_id = i;
	dHandle.connection_id = 0;
	
	ble_gap_addr_t gapAddr;
	err_code = dm_peer_addr_get(&dHandle,  &gapAddr);
	
}

And I've found the issue inside dm_peer_addr_get For all bonded devices I have id_bitmap = 0xFE, ADDR_ENTRY = 0x02 and in result below block is never beeing executed.

    if ((m_peer_table[p_handle->device_id].id_bitmap & ADDR_ENTRY) == 0)
    {
        DM_TRC("[DM]:[DI 0x%02X]: Address get for bonded device.\r\n",
               p_handle->device_id);

        (*p_addr) = m_peer_table[p_handle->device_id].peer_id.id_addr_info;
        err_code  = NRF_SUCCESS;
    }

I can make a list of devices by making changes in device_manager_peripheral.c file. But I don't want to touch SDK files. My goal is to count bonded devices. Because I want to make something like circular bonding. For example during bonding 5th device I want to delete the oldest one.

[wlgrd]

I know this is done in the reference designs for desktop and remote, so it should be doable without messing with the SDK internals. What SDK version do you use?

[paulus]

I'm using SDK 10 (nRF51_SDK_10.0.0_dc26b5e)

[Petter Myhre]

dm_peer_addr_get() is normally used when you want to do get one address to do directed advertising, not with whitelisting, and will only return device address, not IRK. What kind of devices have bonded to? I suspect you have bonded to devices with private resolvable addresses, so the device addresses are not relevant, but the IRKs are. I'm not sure why you get 0 IRKs. Could you use the debugger to see what is happening inside dm_whitelist_create()? And for deletion of the oldest bond please have a look at this.