https://devzone.nordicsemi.com/f/nordic-q-a/32655/is-race-condition-possible-when-stopping-advertisingIs race condition possible when stopping advertising? I need to disable BLE for some time to perform critical tasks. I need to stop advertising and be disconnected. Let&#39;s consider simple code snippet that runs with the lowest priority: Is it possibleen-USTelligent Community 13Tue, 24 Apr 2018 08:24:06 GMThttps://devzone.nordicsemi.com/thread/129492?ContentTypeID=1Tue, 24 Apr 2018 08:24:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:234331e6-5f33-414b-a844-b9b1174b370eMartinBL<p>How about calling&nbsp;sd_ble_gap_adv_stop() no matter what, and then call&nbsp;sd_ble_gap_disconnect() right after? Both sd_ble_gap_adv_stop() and sd_ble_gap_disconnect() just return NRF_ERROR_INVALID_STATE if the advertiser is not running or if the device is not in a connection. That should ensure that your device is not advertising and if a race condition occurred and a peer device connected while the function was executing, it will get disconnected immediately.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/129234?ContentTypeID=1Sun, 22 Apr 2018 13:49:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2024d2b7-29e2-4944-90e6-b70196a8e3a5Al Bundy<p>S110, SDK v.8</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/127556?ContentTypeID=1Tue, 10 Apr 2018 08:33:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b6ccbb5a-d8ec-4d90-b8b6-50976333c3adMartinBL<p>Hi,&nbsp;</p> <p>Sorry for the slow response.</p> <p>What Softdevice are you using?</p><div style="clear:both;"></div>