https://test-devzone.nordicsemi.com/f/nordic-q-a/88772/how-shall-i-define-service-data-in-ble-scan-response-dataThis is the implemenatation spec for GATT server database (reader) firmware i am working on. I have implemented advertisement packet using nRF Connect SDK latest. Not sure how to declare 8-byte Service Data ? I have the 8-byte value with me. Thisen-USTelligent Community 13 Non-ProductionThu, 09 Jun 2022 17:15:38 GMThttps://test-devzone.nordicsemi.com/thread/371728?ContentTypeID=1Thu, 09 Jun 2022 17:15:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9ee7d951-7c50-4a80-b016-a86ccc1e1ef6user116076<p>Ok, i got it to work by trying various syntax</p> <div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </span><span>const</span><span> </span><span>struct</span><span> </span><span>bt_data</span><span>&nbsp;service</span><span>_sd</span><span>[]</span><span> = </span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </span><span>BT_DATA_BYTES</span><span>(</span><span>BT_DATA_SVC_DATA128</span><span>, </span><span>BT_UUID_SERVICE_VAL</span><span>, </span><span>reader_serial_number</span><span>[</span><span>0</span><span>],</span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span><span>reader_serial_number</span><span>[</span><span>1</span><span>],</span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span><span>reader_serial_number</span><span>[</span><span>2</span><span>],</span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span><span>reader_serial_number</span><span>[</span><span>3</span><span>],</span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span><span>reader_serial_number</span><span>[</span><span>4</span><span>],</span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span><span>reader_serial_number</span><span>[</span><span>5</span><span>],</span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span><span>reader_serial_number</span><span>[</span><span>6</span><span>],</span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span><span>reader_serial_number</span><span>[</span><span>7</span><span>]),</span></div> <br /> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; };</span></div> <div><span>The field &#39;service data&#39; has two propoerties to fill in : UUID and Data. UUID is same as Primary Service</span></div> </div><div style="clear:both;"></div>https://test-devzone.nordicsemi.com/thread/371725?ContentTypeID=1Thu, 09 Jun 2022 16:49:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d7bbe6ed-d572-4da3-bd39-e6a71e8c58ccuser116076<p>In scan response Data.</p> <p>Your response has a syntax error.&nbsp;</p><div style="clear:both;"></div>https://test-devzone.nordicsemi.com/thread/371540?ContentTypeID=1Thu, 09 Jun 2022 06:28:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8140c85c-32a7-4398-831d-2cd39803d875user6207<p>Are you configuring this in the ad data or scan response data?&nbsp;</p> <p>Looking at other samples the could be something like this</p> <div> <div><span>&nbsp;uint8_t</span><span>&nbsp;</span><span>reader_serial_number</span><span>[</span><span>8</span><span>] = some value</span><span>;</span></div> <div><span></span></div> </div> <div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span><span>const</span><span>&nbsp;</span><span>struct</span><span>&nbsp;</span><span>bt_data</span><span>&nbsp;service</span><span>_sd</span><span>[]</span><span>&nbsp;=</span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</span></div> <div><span></span><span><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<strong>&nbsp; &nbsp; &nbsp;&nbsp;BT_DATA_BYTES(</strong></span></span><span>BT_DATA_SVC_DATA16</span><span>,&nbsp;</span><span>8</span><span>,&nbsp;</span><span>reader_serial_number);</span></div> <div><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; };</span></div> </div><div style="clear:both;"></div>