enable whitelist in advertising SoftDevice S130

[code_hard]

Hello, I got problem in enabling whitelist on starting advertising.

My working enviroment is PCA10028 V1.1.0 2015'18, SoftDevice S130 2.0.1, SDK 12.2.0 MCP works on Android 6.0.1, Nexus 7(2013).

I refere project from ble_app_hids_keyboard and refactor ble_adverting module.

The working flow describes on below:

1. Start indirect connectable Advertising without whitelist in advertisment data #1.
2. Android MCP connects and bonds successful.
3. Disconnect and update whitelist from peer manager.
4. Set advertisment data #2 and start indirect conntable advertising with updated whitelist by calling sd_ble_gap_adv_start(), it occurs error. The returned error code is 0x3201.

If I disable whitelist and do the same working flow, it works fine. The only different is in setting advertising parameter.

p_adv_params->type      = BLE_GAP_ADV_TYPE_ADV_IND;         // connectable undirected
p_adv_params->fp        = BLE_GAP_ADV_FP_FILTER_CONNREQ;    // enable whitelist
//p_adv_params->fp      = BLE_GAP_ADV_FP_ANY;               // disable whitlist
p_adv_params->interval  = NO_REQ_ADV_INTREVAL;
p_adv_params->timeout   = NO_REQ_ADV_TIMEOUT;

// enable whielist
ble_adv_fetch_whitelist(); // fetch current whitelist from peer mamanger
#if (NRF_SD_BLE_API_VERSION == 2)
    p_adv_params->p_whitelist = &m_whitelist;
#endif

// disable white list
//p_adv_params->p_whitelist = NULL;

// set advertising data
ret = ble_advdata_set(&m_advdata, &m_rspdata);

// ....some code in here

ret = sd_ble_gap_adv_start(&adv_params); // stop in this place

I stop in sd_ble_gap_adv_start() and watch the ble_gap_adv_params_t, value is on below:

type:			BLE_GAP_ADV_TYPE_ADV_IND
p_peer_addr:	NULL
fp:				BLE_GAP_ADV_FP_FILTER_CONNREQ (0x02)
p_whitelist:	->pp_addrs[0]->addr_type:	BLE_GAP_ADDR_TYPE_PUBLIC
				->pp_addrs[0]->addr:		"0xB4 0xAD 0x60 0x0B 0x22 0xAC"
				->addr_count:	1
				->pp_irks[0]->irk:			"0x1C 0x1B 0xBE 0x3E 0x1F 0x2F 0x2B 0x19 0x1F 0x07 0x72 0xC0 0xBE 0xEE 0x85 0xAE"
				->irk_count:	1
interval:		1600
timeout:		30
channel_mask:	.ch_37_off:		0
				.ch_38_off:		0
				.ch_39_off:		0

could anyone tell me what is the problem?

[Hung Bui]

Hi,

Error code 0x3201 means BLE_ERROR_GAP_DISCOVERABLE_WITH_WHITELIST: Use of Whitelist not permitted with discoverable advertising.

You need to advertise in other modes, not the BLE_GAP_ADV_FLAG_LE_LIMITED_DISC_MODE or BLE_GAP_ADV_FLAG_LE_GENERAL_DISC_MODE

[code_hard]

Thank you Hung Bui, it works now.

I appreciated your help, this problem troubled me several days.

Another question, I study the online document about sd_ble_gap_adv_start() in online document. How do I decode the error code 0x3201 in this case?

[Hung Bui]

If you have a look at the description of the function, here. You can find the list of error return codes. You click on the error you can find the hex value of each error code. Basically the 0x3000 is the NRF_ERROR_STK_BASE_NUM And the 0x0200 is the NRF_GAP_ERR_BASE.

You can also quickly find them in the source code (.h) also.