https://devzone.nordicsemi.com/f/nordic-q-a/75613/can-softdevice-generate-random-address-automaticallyHi, How can I make the device generate random address periodically? I searched on the forum and found people mentioned BLE_GAP_ADDR_CYCLE_MODE_AUTO when call sd_ble_gap_address_set. This seems to be there in very old SDK. Is this feature still supporteden-USTelligent Community 13Thu, 27 May 2021 07:38:27 GMThttps://devzone.nordicsemi.com/thread/311973?ContentTypeID=1Thu, 27 May 2021 07:38:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d6c54137-1dca-4506-891d-1b44bcf68cc4Amanda Hsieh<p>Hi Min-Ching,</p> <p>I would suggest to use the SDAPI to enable privacy:&nbsp;<a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s140.api.v7.2.0/group___b_l_e___g_a_p___f_u_n_c_t_i_o_n_s.html#ga2203b7709d7178bc35e7f903bd0e913f"><span>sd_ble_gap_privacy_set</span></a>() instead. See the example in this <a href="https://devzone.nordicsemi.com/f/nordic-q-a/39921/how-to-set-my-nrf-device-to-use-the-private-resolvable-address/155736#155736">post</a>.&nbsp;</p> <p>-Amanda H.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/311890?ContentTypeID=1Wed, 26 May 2021 16:09:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b8087f07-03c2-4b2f-bc03-656b325b1861Min-Ching Ho<p>Hi&nbsp;<span>Amanda,</span></p> <p><span>&nbsp; &nbsp; I&#39;m using s140 on 52840. Isn&#39;t the random static address will be set once and keep the address? I want to change my mac address periodically. Is it possible to do it?&nbsp;</span></p> <p><span></span></p> <p><span>Min-Ching Ho</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/311800?ContentTypeID=1Wed, 26 May 2021 12:47:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6d11c40c-afe9-4d2e-92e2-75c4f3e927d7Amanda Hsieh<p>Hi&nbsp;<span>Min-Ching,&nbsp;</span></p> <p><span>Which SD would you use?&nbsp;</span></p> <p><span><a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s130.api.v2.0.1/group___b_l_e___g_a_p___f_u_n_c_t_i_o_n_s.html#ga78b1e409a55beedde9902e2c35a5b5c9">sd_ble_gap_address_set</a>&nbsp;is supported by (S13x v2.x).&nbsp;</span></p> <p><span>In the latest SDK, you can set the BLE address using the function <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v7.2.0/group___b_l_e___g_a_p___f_u_n_c_t_i_o_n_s.html#gaef69dc212534adf4b78d211edce2267b">sd_ble_gap_addr_set</a><a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v4.0.2/group___b_l_e___g_a_p___f_u_n_c_t_i_o_n_s.html?cp=2_3_0_1_1_2_1_2_1#gaef69dc212534adf4b78d211edce2267b">()</a>.&nbsp;The Nordic default is the random static address, for a random static address you do not need to change it periodically. Using a random static address does not require any management by the application.</span></p> <p><span>-Amanda H.</span></p><div style="clear:both;"></div>