To be in Non-scannable non-connectable mode

RE: To be in Non-scannable non-connectable mode

Simonr — Wed, 27 May 2020 06:29:28 GMT

Glad you got it working! Depending on what tool you're using to flash your device, you should make sure you erase the flash on your chip before flashing. To make sure the device isn't in debug mode after you've flashed the device, you should power cycle it to make sure you exit from debug mode.

I don't see any flaws with the way your advertising is set up, so if it's working as intended now, I think you're good.

Best regards,

Simon

RE: To be in Non-scannable non-connectable mode

Beldramma — Tue, 26 May 2020 15:05:12 GMT

Oh, I am so stupid, It works actually. I think it was a bug with my hardware, after debug mode. But if you have some advices, to clean my code, i am open.

RE: To be in Non-scannable non-connectable mode

Beldramma — Tue, 26 May 2020 14:11:09 GMT

I would like to advertise data in non connectable and non scannable mode, and to update it when I receive new data from UART bus.

[quote userid="75734" url="~/f/nordic-q-a/61574/to-be-in-non-scannable-non-connectable-mode/251604"]What are you using the "Copy advertising data" function for exactly?[/quote]

If you are talking about the Copy advertising data, there is first the initialization of my handle if it is not made, then I put 31 in len, because it is an imput parameter of the encode function, to specify the maximum size, and finally I will encode my advertising data.

[quote userid="75734" url="~/f/nordic-q-a/61574/to-be-in-non-scannable-non-connectable-mode/251604"]Have you checked (by debugging) that the FAST and SLOW if-loops you are using are executed as expected in your init function?[/quote]

Yeah, it works well.

RE: To be in Non-scannable non-connectable mode

Simonr — Tue, 26 May 2020 07:10:53 GMT

Can you explain what exactly you'd like to achieve so that I know what assistance you need? Also, please explain the following in your advertising_init() function:

Have you checked (by debugging) that the FAST and SLOW if-loops you are using are executed as expected in your init function?
What are you using the "Copy advertising data" function for exactly?

Best regards,

Simon

RE: To be in Non-scannable non-connectable mode

Beldramma — Mon, 25 May 2020 12:17:09 GMT

[quote userid="75734" url="~/f/nordic-q-a/61574/to-be-in-non-scannable-non-connectable-mode/251465"]I see that you have commented out the advdata.flags. You need advertising flags as part of your advertisement according to the Bluetooth Spec.[/quote]

I have uncommented it, no changes.

[quote userid="75734" url="~/f/nordic-q-a/61574/to-be-in-non-scannable-non-connectable-mode/251465"]If you just need NONCONNECTABLE_NONSCANNABLE advertising, I suggest basing your application on the beacon example, instead of trying to modify one of the others to do that. [/quote]

I did that, i have copied the code from the Beacon example, the advertising_init, but I had errors on the encode et sd_configure. I need others pieces of code, so I cannot take all the code from this example.

RE: To be in Non-scannable non-connectable mode

Simonr — Mon, 25 May 2020 11:45:30 GMT

I see that you have commented out the advdata.flags. You need advertising flags as part of your advertisement according to the Bluetooth Spec.

If you just need NONCONNECTABLE_NONSCANNABLE advertising, I suggest basing your application on the beacon example, instead of trying to modify one of the others to do that.

Best regards,

Simon

RE: To be in Non-scannable non-connectable mode

Beldramma — Mon, 25 May 2020 09:14:42 GMT

Ok I have checked this example. I have done my advertising_init function like that :

static void advertising_init(void)
{
    uint32_t      err_code;
    ble_advdata_t advdata;
    uint8_t       flags = BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED;

    ble_advdata_manuf_data_t manuf_specific_data;
    memset(m_beacon_info, 0, sizeof(m_beacon_info));
    manuf_specific_data.company_identifier = APP_COMPANY_IDENTIFIER;
    manuf_specific_data.data.p_data = (uint8_t*) m_beacon_info;
    manuf_specific_data.data.size   = APP_BEACON_INFO_LENGTH;

    // Build and set advertising data.
    memset(&advdata, 0, sizeof(advdata));

    advdata.name_type             = BLE_ADVDATA_FULL_NAME;
    //advdata.flags                 = flags;
    advdata.include_appearance    = false;
    advdata.p_manuf_specific_data = &manuf_specific_data;
    advdata.uuids_complete.uuid_cnt = 0;   // in order to save bytes, we do not advertise UUID's
    advdata.uuids_complete.p_uuids  = m_adv_uuids;

    // Initialize advertising parameters (used when starting advertising).
    memset(&m_advertising.adv_params, 0, sizeof(m_advertising.adv_params));

    //FAST
    #if BEACON_MODE && !BEACON_MODE_TEST
       m_advertising.adv_modes_config.ble_adv_fast_enabled  = false;
    #else
       m_advertising.adv_modes_config.ble_adv_fast_enabled  = true;
    #endif
       m_advertising.adv_modes_config.ble_adv_fast_interval = NON_CONNECTABLE_ADV_INTERVAL;
       m_advertising.adv_modes_config.ble_adv_fast_timeout  = APP_ADV_DURATION;

	//SLOW
	#if BEACON_MODE && !BEACON_MODE_TEST
       m_advertising.adv_modes_config.ble_adv_slow_enabled = true;
	#else
       init.config.ble_adv_slow_enabled = false;
	#endif
		m_advertising.adv_modes_config.ble_adv_slow_interval = NON_CONNECTABLE_ADV_INTERVAL;
		m_advertising.adv_modes_config.ble_adv_slow_timeout  = APP_ADV_DURATION;

    m_advertising.adv_mode_current               = BLE_ADV_MODE_IDLE;
    m_advertising.conn_cfg_tag                   = BLE_CONN_CFG_TAG_DEFAULT;
    m_advertising.evt_handler                    = on_adv_evt;
    m_advertising.current_slave_link_conn_handle = BLE_CONN_HANDLE_INVALID;
    m_advertising.adv_params.properties.type = BLE_GAP_ADV_TYPE_NONCONNECTABLE_NONSCANNABLE_UNDIRECTED;
    m_advertising.adv_params.p_peer_addr     = NULL;    // Undirected advertisement.
    m_advertising.adv_params.filter_policy   = BLE_GAP_ADV_FP_ANY;
    m_advertising.adv_params.interval        = NON_CONNECTABLE_ADV_INTERVAL;
    m_advertising.adv_params.duration        = 0;       // Never time out.

    // Copy advertising data.
    if (!m_advertising.initialized)
    {
        m_advertising.adv_handle = BLE_GAP_ADV_SET_HANDLE_NOT_SET;
    }
    m_advertising.adv_data.adv_data.p_data = m_advertising.enc_advdata;

    m_advertising.adv_data.adv_data.len = BLE_GAP_ADV_SET_DATA_SIZE_MAX;
    err_code = ble_advdata_encode(&advdata, m_advertising.enc_advdata, &m_advertising.adv_data.adv_data.len);
    APP_ERROR_CHECK(err_code);

    //scan data to NULL
    m_advertising.adv_data.scan_rsp_data.p_data = NULL;
    m_advertising.adv_data.scan_rsp_data.len    = 0;

    err_code = sd_ble_gap_adv_set_configure(&m_advertising.adv_handle, &m_advertising.adv_data, &m_advertising.adv_params);
    APP_ERROR_CHECK(err_code);

    m_advertising.initialized = true;
}

I have no errors with the two functions, encode, and sd configure, but I cannot see my device.

Can you check my code and tell me if it is correct ?

RE: To be in Non-scannable non-connectable mode

Simonr — Wed, 20 May 2020 12:03:15 GMT

Please check out the ble_app_beacon example in the SDK, which implements the nonconnectable_nonscannable advertisement correctly. The beacon will not respond to scan requests/advertising requests.

Best regards,

Simon