Issue in implementing whitelist

Question

Hi, 
 I am working on nrf52832 , SDK15 and softdevice S132. I am modifying the ble_app_hrs example code in SDK 
 I was trying to implement a whitelist with the address of my ANdroid phone so that peripheral will connect only to this phone .

I have hard coded the MAC address , but it is not connecting. And If i disable whitelist it is connecting. 
 
 My doubt is , which address(of the phone) should we put?(I am attaching an image)

Or is there any restriction to the adddress type of the address in the phone?(due to which the disconnect happens) 
 And in which order should the array to be filled? 
 I have done as follows(the address is shown in the image) 
 
 
peer_addr.addr[0] = 0xbc;
peer_addr.addr[1] = 0x41;
peer_addr.addr[2] = 0x01;
peer_addr.addr[3] = 0x31;
peer_addr.addr[4] = 0x8f;
peer_addr.addr[5] = 0x48; 
 Is this the correct way to fill the array? 
 Thanking you. 
 Here are my code snippets 
 1) In advertising_init() added the following 
 
 init.advdata.flags= BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED;

init.config.ble_adv_whitelist_enabled = true; 
 2) Added the following in on_adv_evt() 
 
 
ble_gap_addr_t peer_addr; //peer device address
ble_gap_addr_t const * p_peer_addr;
ble_gap_addr_t const * const * pp_peer_addr;

..............................

.............................

case BLE_ADV_EVT_WHITELIST_REQUEST:
memset(&peer_addr, 0x00, sizeof(peer_addr));


peer_addr.addr[0] = 0xbc;
peer_addr.addr[1] = 0x41;
peer_addr.addr[2] = 0x01;
peer_addr.addr[3] = 0x31;
peer_addr.addr[4] = 0x8f;
peer_addr.addr[5] = 0x48

//peer_addr pointers. Double pointers for the win! :S
p_peer_addr = &peer_addr;
pp_peer_addr = &p_peer_addr;

// Set white list
err_code = sd_ble_gap_whitelist_set(pp_peer_addr, 0x01);
if (err_code == NRF_SUCCESS)
NRF_LOG_INFO("Successfully set whitelist!
");

// White list reply
err_code = ble_advertising_whitelist_reply(&m_advertising,p_peer_addr, 1, NULL, (uint32_t) NULL);
if (err_code == NRF_SUCCESS)
NRF_LOG_INFO( "Whitelist replied
");

APP_ERROR_CHECK(err_code);

break; 
 Please let me know are the above changes sufficient to make the whitelist work? 
 Am I missing something? 
 Anything to do with filter policies?

with regards, 
 Geetha

AndreasF · Accepted Answer

Hi Geetha. 
 First problem here is that you have used the Wi-FI MAC address. You need to use your Bluetooth address. Note also that most smart phones change Bluetooth address roughly every 15 minute. I made the following change to your code and ran it successfully: 
 1) In advertising_init() : 
 static void advertising_init(void)
{
 ret_code_t err_code;
 ble_advertising_init_t init;

 memset(&init, 0, sizeof(init));

 init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
 init.advdata.include_appearance = true;
 //init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE; // Comment this line out if you havn't done it already
 init.advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
 init.advdata.uuids_complete.p_uuids = m_adv_uuids;

 init.config.ble_adv_fast_enabled = true;
 init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
 init.config.ble_adv_fast_timeout = APP_ADV_DURATION;


 init.advdata.flags = BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED; // These two lines are correct
 init.config.ble_adv_whitelist_enabled = true; //

 
 init.evt_handler = on_adv_evt;

 err_code = ble_advertising_init(&m_advertising, &init);
 APP_ERROR_CHECK(err_code);

 ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
} 
 
 2) In on_adv_evt(): 
 ble_gap_addr_t peer_addr; //peer device address
	ble_gap_addr_t const * p_peer_addr;
	// ble_gap_addr_t const * const * pp_peer_addr; --> This was not needed

	----------------------------------------
	........................................
	----------------------------------------

	case BLE_ADV_EVT_WHITELIST_REQUEST:
	memset(&peer_addr, 0x00, sizeof(peer_addr));


	//peer_addr.addr[0] = 0xbc; | Reverse the order you placed these:
	//peer_addr.addr[1] = 0x41; |
	//peer_addr.addr[2] = 0x01; | Also note that you used wrong address,
	//peer_addr.addr[3] = 0x31; | as I said in my reply
	//peer_addr.addr[4] = 0x8f; | 
	//peer_addr.addr[5] = 0x48; | Insert the address like this:

	peer_addr.addr[5] = 0xbc;
 peer_addr.addr[4] = 0x41;
 peer_addr.addr[3] = 0x01;
 peer_addr.addr[2] = 0x31;
 peer_addr.addr[1] = 0x8f;
 peer_addr.addr[0] = 0x48;

 peer_addr.addr_type = BLE_GAP_ADDR_TYPE_RANDOM_STATIC; // Add the address type

	//peer_addr pointers. Double pointers for the win! :S
	p_peer_addr = &peer_addr;
	//pp_peer_addr = &p_peer_addr; --> Remove this line

	// Set white list
	err_code = sd_ble_gap_whitelist_set(&p_peer_addr, 0x01); //swap pp_peer_addr with &p_peer_addr, like this
	if (err_code == NRF_SUCCESS)
	{
 NRF_LOG_INFO("Successfully set whitelist!
");
	}

	APP_ERROR_CHECK(err_code); //Added an error check, always useful to have.

	// White list reply
	err_code = ble_advertising_whitelist_reply(&m_advertising,p_peer_addr, 1, NULL, (uint32_t) NULL);
	if (err_code == NRF_SUCCESS)
	{
 NRF_LOG_INFO( "Whitelist replied
");
	}
	APP_ERROR_CHECK(err_code);

	break;
 
 As you can see in the code you had not set the address type for the peer_addr pointer. 
 I ran this successfully with the use of nRF Connect, where you easy can see your Bluetooth Address, example in the picture below: 
 
 The address I added to my whitelist was: 
 peer_addr.addr[5] = 0xE3;
 peer_addr.addr[4] = 0x30;
 peer_addr.addr[3] = 0x15;
 peer_addr.addr[2] = 0x8D;
 peer_addr.addr[1] = 0xDA;
 peer_addr.addr[0] = 0x72; 
 As you can se, this is the address i read below nRF5x (E3:30:15:8D:DA:72) 
 Hope this helps. 
 - Andreas