https://devzone.nordicsemi.com/f/nordic-q-a/74908/sprintf---not-displaying-leading-zero-of-mac-address-sdk15-2-seggerJust need a little help on something that is probably very simple. I am sure I will be embarrassed at how simple this is. I get the nr52 device MAC address and append 4 digits of it to the end of our device name to make the device name (kind of) uniqueen-USTelligent Community 13Sat, 08 May 2021 18:55:57 GMThttps://devzone.nordicsemi.com/thread/308829?ContentTypeID=1Sat, 08 May 2021 18:55:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:367824fd-8e91-41ca-9a92-742e8ef8b38cBryan H<p>Only needed to add 02 in front of the&nbsp;<span>Unsigned hexadecimal integer (%X&nbsp; - needs to be %02X)</span></p> <p><span>new line of code looks like this now:</span></p> <p><span><pre class="ui-code" data-mode="text">sprintf(&amp;device_name[name_size], &quot;%02X%02X&quot;, addr.addr[BLE_GAP_ADDR_LEN - 5], addr.addr[BLE_GAP_ADDR_LEN - 6]);</pre></span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/308828?ContentTypeID=1Sat, 08 May 2021 17:23:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b2d40009-3da6-467b-933d-76e603001baeBryan H<p>FYI:</p> <p>The above code is from:&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/16389/unique-ble-device-name">devzone.nordicsemi.com/.../unique-ble-device-name</a></p><div style="clear:both;"></div>