How to set a custom BLE mac address on nrf52840https://devzone.nordicsemi.com/f/nordic-q-a/123148/how-to-set-a-custom-ble-mac-address-on-nrf52840I&#39;m trying to set a public custom BLE mac address to my device but the flag CONFIG_BT_HCI_SET_PUBLIC_ADDR is not enabled. If i try to set it to true on prj.conf file the code doesn&#39;t compile anymore. im using nrf connect v.3.0.0.en-USTelligent Community 13Tue, 22 Jul 2025 11:54:22 GMTRE: How to set a custom BLE mac address on nrf52840https://devzone.nordicsemi.com/thread/543162?ContentTypeID=1Tue, 22 Jul 2025 11:54:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bbbe17c1-e573-41f6-ad96-3e1672754ee0XhemaliSheshori<p>Using bt_ctrl_set_public_addr() before the bt_enable() is working!<br />It wasn&#39;t necessary to disable and re-enable bluetooth!<br />Thank you!</p><div style="clear:both;"></div>RE: How to set a custom BLE mac address on nrf52840https://devzone.nordicsemi.com/thread/543156?ContentTypeID=1Tue, 22 Jul 2025 11:18:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1e34a483-1f89-4a68-a4d6-3df48bb05fd1Priyanka<p>Hi,</p> <p>You can see here: <a href="https://docs.nordicsemi.com/bundle/ncs-2.7.0/page/kconfig/index.html#CONFIG_BT_HCI_SET_PUBLIC_ADDR">https://docs.nordicsemi.com/bundle/ncs-2.7.0/page/kconfig/index.html#CONFIG_BT_HCI_SET_PUBLIC_ADDR</a></p> <p>that this config is not directly user assignable. Please read the above documentation for more details.</p> <p>I don&#39;t think you would need to enable it, rather, you would just need to call <a href="https://docs.nordicsemi.com/bundle/zephyr-apis-latest/page/group_bt_ctrl.html#ga541cabe76fd3cb019aae2fe01d45cbfc">bt_ctrl_set_public_addr()</a>&nbsp;before the bt_enable() in order to set the public address.</p> <p>If the address change is not reflected, then,</p> <p>Could you try to disable Bluetooth after setting the public address and re-enabling then?</p> <p>-Priyanka</p><div style="clear:both;"></div>