non-connectable advertising while connected on SDK15.3

[kreis]

Hello,

I'm using SDK15.3 and trying to do a non-connectable advertising while connected. 

For that I set my adv package as non-connectable, however, when I run the function sd_ble_gap_adv_start I always receive the error 0x3004.

        case BLE_GAP_EVT_CONNECTED:
            NRF_LOG_INFO("Connected");
            bsp_board_led_on(CONNECTED_LED);
            bsp_board_led_off(ADVERTISING_LED);
            m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
            err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
            APP_ERROR_CHECK(err_code);
            advertising_update();
            advertising_start();
            break;

Based on my research on the forum I know it's possible to do non-connectable advertising while connected, at least in older versions of the SDK. I had a hard time to implement the advertising update in this SDK but now it's working fine, the error occurs simply by calling the function advertising_start while I'm connected.

Does anyone know how to solve this problem?

Thank you very much.

[awneil]

https://devzone.nordicsemi.com/f/nordic-q-a/49872/advertise-connected-when-connected/198912#198912

[kreis]

Hi awneil!

Thank you very much for your prompt help.

I spent some time trying to make it work but it didn't. Actually this is the approach I was trying to before.

As far as I understood the SDK15 returns an error when I call the function sd_ble_gap_adv_set_configure, which is necessary to change the advertising to non-connectable, inside the BLE_GAP_EVT_CONNECTED it returns the error code 7.

I've gone through this same problem when trying to update the contents of the advertising package, but in that case, I found a workaround in the forum where there was no need to call the function sd_ble_gap_adv_set_configure. For the current problem it does not work.

Thank you.

[awneil]

kreis said:

it returns the error code 7.

Have you looked up what that code means?

kreis said:

I found a workaround in the forum

Link?

[kreis]

This is the workaround, but it works to update only the manufacture data:

https://devzone.nordicsemi.com/f/nordic-q-a/33606/updating-advertising-data-manuf-spec-data-in-sdk15/144853#144853

[kreis]

As for the error code 7 it means NRF_ERROR_INVALID_PARAM though the only modification I made in the example advertising_init function was to change the BLE_GAP_ADV_TYPE_CONNECTABLE_SCANNABLE_UNDIRECTED to BLE_GAP_ADV_TYPE_NONCONNECTABLE_NONSCANNABLE_UNDIRECTED as suggested. I also tried increasing the advertising period to 200ms but the error persists.