https://devzone.nordicsemi.com/f/nordic-q-a/27416/about-schedularAfter reading a few related questions and the official tutorial, I have a guess, hoping to confirm: If I do not need to add extra events into schedular for management purposes, only the default event (such as ble_evt_handler&#39;s event in main.c) is requireden-USTelligent Community 13Tue, 21 Nov 2017 11:52:40 GMThttps://devzone.nordicsemi.com/thread/108284?ContentTypeID=1Tue, 21 Nov 2017 11:52:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e255fa7b-6d77-4800-870b-bafdf7108ae2Stayhungry<p>Thanks,Martin</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/108283?ContentTypeID=1Tue, 21 Nov 2017 11:37:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d1c1456a-137a-489d-9197-4e0a017687f0MartinBL<p>Yes, that is correct. <code>EVENT_SIZE</code> is the maximum size of event data to be passed through the scheduler. So if you never schedule events with event data, setting <code>EVENT_SIZE</code> to 0 is fine.</p> <p>I guess the <a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf52832.ps.v1.1%2Fabout.html&amp;cp=2_1_0_1&amp;anchor=concept_ebh_qjg_bt">documentation</a> would have been a little clearer if it had said</p> <pre><code> [in] EVENT_SIZE Maximum size of **event data** to be passed through the scheduler. </code></pre> <p>instead of</p> <pre><code>[in] EVENT_SIZE Maximum size of events to be passed through the scheduler. </code></pre><div style="clear:both;"></div>