https://devzone.nordicsemi.com/f/nordic-q-a/39887/stop-advtisingi use the sdk15.2.0, the chip is nrf52832,my device have both BLE peripheral,and BLE center in my application, I use center to connect with peripheral, i directly use the app_uar example for center and peripheral. when they finish the data exchange. ien-USTelligent Community 13Mon, 29 Oct 2018 09:11:58 GMThttps://devzone.nordicsemi.com/thread/154811?ContentTypeID=1Mon, 29 Oct 2018 09:11:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2748f0a8-cdf1-44a0-935e-9191eb9dfa71haakonsh<ol> <li>Yes, you can call&nbsp;<span>sd_ble_gap_disconnect&nbsp;from anywhere in the application, and at any time, and the softdevice will disconnect the connection of the given connection handle.</span></li> <li><span>Yes, you can call&nbsp;<a title="sd_ble_gap_adv_stop" href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v6.1.0/group___b_l_e___g_a_p___f_u_n_c_t_i_o_n_s.html?cp=2_3_1_1_0_2_1_2_5#ga732faeeb8489dcb34873d78e773957bc">sd_ble_gap_adv_stop</a>&nbsp;from anywhere in the application, and at any time.&nbsp;</span></li> </ol><div style="clear:both;"></div>