Disable BLE failed

[nghia]

Hi,

I am using nrf52832 with softdevice s132. The peripheral device is nrf52832 and central device is a mobile app. I want to disable BLE in nrf52832 and I am using this:

    uint32_t disable_ble(void)
    {
        if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
        {
            err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
            if (err_code != NRF_SUCCESS)
            {
                return err_code;
            }
        }
        err_code = sd_ble_gap_adv_stop(m_advertising.adv_handle);
        return err_code;
    }

I see that when I call this function without connection between my app and device, I worked. But when there is a connection, after device nrf52832 disconnect from app and disable adv, my app try to reconnect immediately, and the app can reconnect. I think that sd_ble_gap_adv_stop() take softdevice a couple of time and if central app request connect in this time, sd_ble_gap_adv_stop() will fail. Have anyone face this issue and is there any workaround for it?

Thanks alot!

[Amanda Hsieh]

Hi, 

my app try to reconnect immediately, and the app can reconnect.

Did you enable auto-connect function on the mobile app as this post?  If so, you could disable the function. 

-Amanda H.

[nghia]

Thanks for your respond, it's a good solution for this. I found another workaround: There are 2 case happen when we disable BLE, when connecting and when non-connecting. In case of connecting. I disconnect and in on_adv_evt(), case BLE_ADV_EVT_FAST (I am using fast adv), I call sd_ble_gap_adv_stop(). In case of non-connecting, it means ble is advertising, I just have to call sd_ble_gap_adv_stop() in disable_ble().

bool run_adv = true;

uint32_t disable_ble(void)
{
    uint32_t err_code;
    if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
    {
        err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
        if (err_code != NRF_SUCCESS)
        {
            return err_code;
        }
        run_adv = false;
    }
    else
    {
        err_code = sd_ble_gap_adv_stop(m_advertising.adv_handle);
    }
    return err_code;
}

static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
    uint32_t err_code;
    switch (ble_adv_evt)
    {
        case BLE_ADV_EVT_FAST:
            if (run_adv == false)
            {
                sd_ble_gap_adv_stop(m_advertising.adv_handle);
            }
            break;
        case BLE_ADV_EVT_IDLE:
            sleep_mode_enter();
            break;
        default:
            break;
    }
}