https://devzone.nordicsemi.com/f/nordic-q-a/19982/manufacturing-specific-dataThe program is hanged when I use below code to set Manufacturing specific data (I am using SDK12.0.0 S130) Please comments. uint16_t DataSize = 14; uint8_t MfgSpecData[15]=&quot;0x112233445566&quot;; ble_advdata_t advdata; ble_advdata_t scanrsp; en-USTelligent Community 13Fri, 24 Feb 2017 10:02:58 GMThttps://devzone.nordicsemi.com/thread/77756?ContentTypeID=1Fri, 24 Feb 2017 10:02:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4aef1bb3-96d0-4146-9d35-beee5f803ce6J&#248;rgen Holmefjord<p><strong>Congratulations on posting question number 20,000!</strong></p> <p><img src="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/20k_5F00_cases.png" alt="image description" /></p> <p>I agree with @jim, you have to make sure you do not exeed the limit on 31 bytes in the advertising packet. <a href="https://devzone.nordicsemi.com/question/60125/my-device-is-freezing-and-restarting/">Here</a> is a guide on how to debug your code to check the error code returns from the softdevice function calls.</p> <p>Best regards,</p> <p>Jørgen</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/77757?ContentTypeID=1Fri, 24 Feb 2017 09:56:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:74641e21-51d2-4255-82df-302017c728d7Jimmie Johansson<p>The advertising packet has a size limit:</p> <pre><code>#define BLE_GAP_ADV_MAX_SIZE 31 </code></pre> <p>If you are adding a couple of services, a name and the manufacturer data, you&#39;re likely to run out of space. Depending on the version of the SDK the function ble_advdata_set() will probably be run at some time. Use the debugger to step through it and you may find the problem.</p><div style="clear:both;"></div>