https://devzone.nordicsemi.com/f/nordic-q-a/40324/migrated-from-sdk-14-0-to-15-2-and-now-ble-advertising-is-turning-off-immediately-after-turning-onHi all, I&#39;m working on an application that requires BLE. I&#39;ve recently upgraded my project from sdk 14.0 to 15.2 in order to deal with some problems that I ran into with the fstorage module, and now my BLE code isn&#39;t working. Since I went through allen-USTelligent Community 13Fri, 09 Nov 2018 15:19:57 GMThttps://devzone.nordicsemi.com/thread/156708?ContentTypeID=1Fri, 09 Nov 2018 15:19:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:47caea50-9a52-441d-881b-e4e37cb4540bMaipei<p>Hi Andreas,</p> <p>Thank you! The advertising duration was the culprit! It seems like it is scaled differently in this sdk (the number corresponds to units of 10ms instead of 1s). Thanks for the help!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/156581?ContentTypeID=1Fri, 09 Nov 2018 06:43:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e3fab9cb-d67e-43a5-9ce6-9dc3dd31f99eAndreasF<p>Hi.</p> <p>Have you checked your advertising interval and duration?</p> <p><pre class="ui-code" data-mode="text">#define APP_ADV_INTERVAL #define APP_ADV_DURATION</pre></p> <p>In <strong>main.c</strong></p> [quote user=""]It&#39;s worth noting that I have checked through my code and I know that none of the functions that I&#39;m calling are returning any errors.[/quote] <p>&nbsp;Do you end up in <strong>idle_state_handle()</strong>?</p> <p>- Andreas</p><div style="clear:both;"></div>