https://devzone.nordicsemi.com/f/nordic-q-a/96599/nrf5340-call-bt_disable-always-return-errHi Devzone: I have create our own board based on nrf5340dk_nrf5340, all are the same , just the pin configure and some perpherail devices on bus are not the same. I configure bluetooth as follows, #bluetooth CONFIG_BT =y CONFIG_BT_PERIPHERALen-USTelligent Community 13Tue, 14 Feb 2023 02:07:01 GMThttps://devzone.nordicsemi.com/thread/409721?ContentTypeID=1Tue, 14 Feb 2023 02:07:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7227db7e-6d64-4900-9364-d2c03f4558d7mluo<p>Thank you&nbsp;<a href="https://devzone.nordicsemi.com/members/eith">Einar Thorsrud</a>&nbsp;&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/409491?ContentTypeID=1Mon, 13 Feb 2023 07:54:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:46a1c034-0217-4b38-8ea8-cdf0f07e38caEinar Thorsrud<p>Hi,</p> <p>Disabling the Bluetooth stack with <code>bt_disable()</code> is not supported. If what you want to do is just to stop any Bluetooth activity, you can achieve that by terminating any active connections and stopping scanning and advertising. If you need low-level access to the radio you may want to look at <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.2.0/nrf/samples/mpsl/timeslot/README.html">MPSL timeslots</a>. If you actually have a need for disabling the Bluetooth stack, you would need to perform a reset (see <a href="https://devzone.nordicsemi.com/f/nordic-q-a/93656/shutting-down-ble-host-stack-using-bt_disable/394730">this post</a>).</p><div style="clear:both;"></div>