Disabling advertising

[Cyril]

Hello everyone

I'm trying to disable advertising but it doesn't work in some cases, I don't really know why. Here is my pretty simple piece of code:

/* Disconnect and then disable advertising */ 
if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
{
    sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
}
uint32_t err_code = sd_ble_gap_adv_stop();
APP_ERROR_CHECK(err_code);

The issue I'm having is that I got the BLE_ADV_EVT_SLOW after a few seconds, when the fast advertising interval expires. I guess the timer is not stopped...

Also, I have seen sometimes that the timer is not stopped instantly when app_timer_stop is called. The handler is called one last time before being stopped.

I use SDK v11 with S132 v2.0.0 (nRF52)

[Petter Myhre]

Firstly, are you actually advertising when you call sd_ble_gap_adv_stop()? If not, I believe it will return NRF_ERROR_INVALID_STATE and APP_ERROR_CHECK() will cause a reset.

Secondly, I believe this is because when the BLE_GAP_EVT_DISCONNECTED event is sent to ble_advertising_on_ble_evt() ble_advertising_start() will be called.

This event will come when the link is actually disconnected, not when you call sd_ble_gap_disconnect().

So you can either modify the advertising library, or maybe handle it in ble_evt_dispatch().

[sam wagner]

Hi Petter,

How do we find out if the device is actually advertising or not? I am currently facing a situation where where sd_ble_gap_adv_stop() is returning NRF_ERROR_INVALID_STATE for me.

Thanks, Sam