https://devzone.nordicsemi.com/f/nordic-q-a/25922/try-to-set-mac-in-to-nrf51-sdk9void set_addr (void) { static ble_gap_addr_t m_central_addr; m_central_addr.addr_type = BLE_GAP_ADDR_TYPE_RANDOM_PRIVATE_NON_RESOLVABLE; m_central_addr.addr[0] = 0x7a; m_central_addr.addr[1] = 0x38; m_central_addr.addr[2] = 0x28; m_central_addren-USTelligent Community 13Fri, 13 Oct 2017 12:19:43 GMThttps://devzone.nordicsemi.com/thread/102101?ContentTypeID=1Fri, 13 Oct 2017 12:19:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d31d0b5c-9acd-41ad-982b-16be969b7ccdMikhail<p>Yes, now work. Thanks</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/102100?ContentTypeID=1Fri, 13 Oct 2017 11:43:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:21f8e59c-c770-42d3-b59d-3f7928da1d79Sigurd<p>Use <code>BLE_GAP_ADDR_TYPE_RANDOM_STATIC</code>,</p> <pre><code>m_central_addr.addr_type = BLE_GAP_ADDR_TYPE_RANDOM_STATIC; </code></pre><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/102099?ContentTypeID=1Fri, 13 Oct 2017 11:42:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ad48235f-cffc-4fb1-8a5c-c2211836e9a3Mikhail<p>if I need set mac like above? What shoul I do instead? addr_type doesn&#39;t matter. I just need set mac addr</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/102098?ContentTypeID=1Fri, 13 Oct 2017 11:37:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c83cc47f-1d25-4ab4-ab27-4bb7f114b6f3Sigurd<p>Hi,</p> <p>As shown in the figure in <a href="https://devzone.nordicsemi.com/question/110308/i-want-to-change-the-ble-address/?answer=110344#post-id-110344">this post</a>, for Random Private non-resolvable addresses, the 2 MSB must be set to <code>00</code>, and not 11.</p><div style="clear:both;"></div>