Cant re-start advertising after disconnect

[riceman0]

Hello, in my application (adapted from ble_app_uart peripheral example of SDK 16.0) I am starting advertising using 

err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);

and then letting it connect and disconnect, and then after the disconnection event I try to run that line of code again (I'd like to start advertising again, ready to connect again) and the call fails.

Tracing into it, apparently the code excerpt from ble_advertising_start in ble_advertising.c, the first call to sd_ble_gap_adv_set_configure is failing with a return code of 8, or NRF_ERROR_INVALID_STATE.  What do I need to do to start advertising again after a disconnection?

Thanks.

    if (p_advertising->adv_mode_current != BLE_ADV_MODE_IDLE)
    {

        ret = sd_ble_gap_adv_set_configure(&p_advertising->adv_handle, p_advertising->p_adv_data, &p_advertising->adv_params);
        if (ret != NRF_SUCCESS)
        {
            UART_SendString("[as!1]");
            return ret;
        }
        ret = sd_ble_gap_adv_start(p_advertising->adv_handle, p_advertising->conn_cfg_tag);

        if (ret != NRF_SUCCESS)
        {
            UART_SendString("[as!2]");
            
            return ret;
        }
    }

[Sigurd]

The advertising module will by default re-start the advertising for you in ble_advertising.c function on_disconnected(). If you then try start it yourself with sd_ble_gap_adv_start(), the function sd_ble_gap_adv_start() will return NRF_ERROR_INVALID_STATE because advertising is already on-going!

[riceman0]

got it, thanks!