ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Karl Ylvisaker — Thu, 19 Nov 2020 13:47:14 GMT

Hello Daniel,

Thank you for your patience.

I took a look at your code, and it seems that it fails when trying to encode the uuid to be put in the scan response packet.
Upon closer inspection, this happens because you are calling advertising_init before calling services_init - in which the uuid is encoded and provided to the SoftDevice.
So thus it is encoded incorrectly, and which fails the advertising initialization.
Try changing places of the services_init and the advertising_init lines of your main function, and see if this does not resolve your issue.

Best regards,
Karl

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Kampino — Wed, 11 Nov 2020 15:15:12 GMT

Hello Karl,

sure. Please take a look at the attachments.

devzone.nordicsemi.com/.../7848.ble_5F00_app_5F00_template.zip

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Karl Ylvisaker — Wed, 11 Nov 2020 14:22:46 GMT

[quote user="Kampino"]yes, it is the same error. Again on "ble_advertising_init(&m_advertising, &init);"
I only use a custom UUID and the code from the example. Please see the snipped below[/quote]

Strange. What is your BLE_UUID_OUR_SERVICE defined as?
Could I ask you to share the entire project code with me, as a .zip file here on DevZone so I may take a look?

Best regards,
Karl

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Kampino — Tue, 10 Nov 2020 15:51:21 GMT

Hello Karl,

yes, it is the same error. Again on "ble_advertising_init(&m_advertising, &init);"
I only use a custom UUID and the code from the example. Please see the snipped below

static ble_uuid_t m_adv_uuids[] =                                               /**< Universally unique service identifiers. */
{
    {
        BLE_UUID_OUR_SERVICE, BLE_UUID_TYPE_VENDOR_BEGIN
    }
};

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.flags                   = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
    
    init.srdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
    init.srdata.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.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);
}

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Karl Ylvisaker — Tue, 10 Nov 2020 14:32:08 GMT

Hello Kampino,

[quote user="Kampino"]I have read the linked tutorial and restart my work with a new ble_template project. Steps 5 + 6 results in the same error.[/quote]

Are you getting the same NRF_ERROR_INVALID_PARAM error when you follow the tutorial? That is very strange indeed.
What is the current size of your advertising data and scan response data?

Best regards,
Karl

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Kampino — Mon, 09 Nov 2020 18:19:27 GMT

Hello Karl,

I have read the linked tutorial and restart my work with a new ble_template project. Steps 5 + 6 results in the same error.

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Kampino — Mon, 09 Nov 2020 15:32:32 GMT

Hey Karl,

thank you for the answer. I will check your link from below and give you an update tomorrow 🙂

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Karl Ylvisaker — Mon, 09 Nov 2020 14:48:49 GMT

Please see the beginner's service tutorial by my colleague for a more detailed description of the theory and implementation of scan response data.
The tutorial also demonstrates how you could setup and use scan response data in Step 6.

Hope this helps! 🙂

Best regards,
Karl

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Karl Ylvisaker — Mon, 09 Nov 2020 14:46:23 GMT

[quote user="Kampino"]Can you give me a more detailed explanation about this please?[/quote]

Are you familiar with the Scan Response in general, or are you asking how to implement it specifically?
The scan response is a secondary advertising packet - like an extension - that is sent upon receiving a SCAN_REQ, in which the central asks for a SCAN_RSP, containing additional advertising data.

Since you are using the Advertising module, you may just add scan response data exactly as you are adding advertising data right now - by setting the the srdata field of the ble_advertising_init_t structure you are already passing to your ble_advertising_init function.

So, instead of including multiple UUID's in your advertising data, you may place some of them in your scan response data instead.

Does this make things more clear, or is there something you would like me to explain in more detail?
Please let me know if anything still should be unclear.

Best regards,
Karl

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Kampino — Mon, 09 Nov 2020 14:21:15 GMT

Hello Karl,

I will check this after. What do you mean with

"Please try to move one of your UUID's to the scan response, and see if this resolves your issue."

Can you give me a more detailed explanation about this please?

Thank you.

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Karl Ylvisaker — Mon, 09 Nov 2020 14:18:58 GMT

Hello again Kampino,

What is the length of your current advertising packet? Does it still exceed 31 bytes? Keep in mind that each field required 2 bytes overhead ( 1 for type and 1 for length). Please try to move one of your UUID's to the scan response, and see if this resolves your issue.

Best regards,
Karl

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Kampino — Mon, 09 Nov 2020 14:09:40 GMT

Hello Karl,

I have changed the name to "Dev", but the error is still the same.

RE: ERROR 7 [NRF_ERROR_INVALID_PARAM] with custom service for BLE

Karl Ylvisaker — Mon, 09 Nov 2020 13:51:52 GMT

Hello,

[quote user=""]But I got the following error message when try to run the code[/quote][quote user=""]So what is wrong here?[/quote]

Looking at line 638 ( as pointed out in the error message ) we find the APP_ERROR_CHECK with the error code returned from ble_advertising_init function. Looking at the ble_advertising_init API Reference yields the following exempt:

NRF_ERROR_INVALID_PARAM If the advertising configuration in p_init is invalid.

My guess here is that you are trying to include more than the possible 31 bytes into your advertising.
To resolve this, I would recommend that you cut down on the device name - which right now is trying to configure advertising with full name, 15 + 2 = 17 bytes, just for the name - and move one or both uuid's to your scan response instead.

Please try this, and see if it resolves your issue.

Best regards,
Karl