Static / programmable whitelist

[Bjarke]

Hi,

Is it possible to add a static bluetooth address to the whitelist?

I am using SDK 14.2.0, device is nrf52832 + peer manager.

BR

bjarke

[tesc]

Hi,

Whitelist can be used both by peripheral (to filter which centrals can connect) and by central (to filter what peripherals to connect to.) I assume that you need this for a peripheral.

If you use the Advertising Module then it is your responsibility to provide a whitelist on the BLE_ADV_EVT_WHITELIST_REQUEST event.

You may then choose to fetch a whitelist from peer manager using pm_whitelist_get(), as is done for instance in the HID Mouse Application example.

Or, in your case, you may make a whitelist manually using any Bluetooth addresses that you would like. The whitelist is an array of ble_gap_addr_t structures and an array of ble_gap_irk_t structures. (The IRK structure is only needed for resolvable addresses, not for static ones.)

In any case you must reply to the whitelist request event with a call to ble_advertising_whitelist_reply(), where you provide the whitelist.

Regards,
Terje

[Bjarke]

Hi,

I have tried to send a static address using the ble_advertising_whitelist_reply(), However I can't get it to work.

Setting up static addr:

ble_gap_addr_t public_device[1] = {{
    .addr_type = BLE_GAP_ADDR_TYPE_PUBLIC,
    .addr = {0x8d, 0xaa, 0xa4, 0x2d, 0x65, 0x94}, // samsung tablet
}};

ble_gap_addr_t const * whitelist_addrs = &public_device;

irk_cnt = 0;
addr_cnt = 1;

err_code = ble_advertising_whitelist_reply(&m_advertising,
    &whitelist_addrs,
    addr_cnt,
    whitelist_irks,
    irk_cnt);

err_code return is 0

However advertising never starts.

If I replace the static addr with the pm_whitelist_get(whitelist_addr, &addr_cnt, whitelist_irks,  &irk_cnt); it works.

Is there a connection between whitelist, advertising and peer manager behind the scene?

Regards

Bjarke

[Bjarke]

Hi again,

Look at similar problem 

https://devzone.nordicsemi.com/f/nordic-q-a/18463/setting-up-whitelist-in-sdk-v12-2-0

I tried to reproduce...

If I use

ble_gap_addr_t whitelist_addr = {1, BLE_GAP_ADDR_TYPE_PUBLIC, {0x8d,0xaa,0xa4,0x2d,0x65,0x94}};
const ble_gap_addr_t      *p_whitelist_addr[] = {&whitelist_addr};
err_code = sd_ble_gap_whitelist_set(p_whitelist_addr, 1);

APP_ERROR_CHECK(err_code);
err_code = ble_advertising_whitelist_reply(&m_advertising,
								p_whitelist_addr[0],
								1,
								NULL,
								0);

I do get fast advertising with whitelist, but somehow the address?(I suppose) is wrong, cause I cannot connect.

Changing p_whitelist_addr[0] to NULL does not do anything.

BR

bjarke

[Bjarke]

Hi,

I have been looking at ble_advertising.c, and can see that for Softdevice >2, the adresses are not used in the ble_advertising_whitelist_reply(...

from ble_advertising.c:

uint32_t ble_advertising_whitelist_reply(ble_advertising_t * const p_advertising,
                                         ble_gap_addr_t    const * p_gap_addrs,
                                         uint32_t               addr_cnt,
                                         ble_gap_irk_t  const * p_gap_irks,
                                         uint32_t               irk_cnt)
{
    if (!p_advertising->whitelist_reply_expected)
    {
        return NRF_ERROR_INVALID_STATE;
    }

    p_advertising->whitelist_reply_expected = false;

    #if (NRF_SD_BLE_API_VERSION <= 2)

        p_advertising->whitelist.addr_count = addr_cnt;
        p_advertising->whitelist.irk_count  = irk_cnt;

        for (uint32_t i = 0; i < addr_cnt; i++)
        {
            *p_advertising->whitelist.pp_addrs[i] = p_gap_addrs[i];
        }

        for (uint32_t i = 0; i < irk_cnt; i++)
        {
            *p_advertising->whitelist.pp_irks[i] = p_gap_irks[i];
        }

    #else

        p_advertising->whitelist_in_use = ((addr_cnt > 0) || (irk_cnt > 0));

    #endif

    return NRF_SUCCESS;
}

Any ideas?

Regards

[Bjarke]

Hi Terje,

I can't get it to work with SDK 14 and softdevice 5. It seems that whitelist depends on peer manager and the creation of a peer ID. But I cant get a static address set and whitelisted.

Regards

Bjarke