https://devzone.nordicsemi.com/f/nordic-q-a/124916/about-ncs-radio-irqWhile debugging the NCS 54L15 ESB module, I observed some anomalies when measuring the radio interrupt signal. For example, after the RADIO READY event is generated, it should immediately trigger the RADIO IRQ handler. However, I measured a delay of approximatelyen-USTelligent Community 13Mon, 13 Oct 2025 12:42:01 GMThttps://devzone.nordicsemi.com/thread/551275?ContentTypeID=1Mon, 13 Oct 2025 12:42:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cc2a1883-1cf7-4343-bcce-bf13774a277aSigurd<p>Hi!</p> <p>Try using constant latency mode, and see if that helps. Add CONFIG_NRFX_POWER=y to prj.conf and enable constant latency using nrfx_power_constlat_mode_request()</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/551186?ContentTypeID=1Sat, 11 Oct 2025 11:20:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:faada7dc-d7c3-46d2-a0b8-60c4dffd669fLiny<p><span>It seems like the issue is related to the system entering sleep mode. After waking up from sleep, there is some delay when entering an interrupt. I fixed it by adding a&nbsp;</span><code class="hyc-common-markdown__code__inline">while(1)</code><span>loop at the end of the main function. Now I&#39;d like to know: can I flexibly control when the system is allowed to enter sleep mode and when it isn&#39;t? For example, if I&#39;m executing a task with high real-time requirements&mdash;starting from time A until receiving a specific message at time B&mdash;I don&#39;t want the system to enter sleep mode during this period to maintain wake-up flexibility. How should I achieve this?</span></p> <div class="host-lopnbnfpjmgpbppclhclehhgafnifija" style="position:relative;"></div> <div id="gtx-trans" style="left:-55px;position:absolute;top:22.3333px;"> <div class="gtx-trans-icon"></div> </div><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/551184?ContentTypeID=1Sat, 11 Oct 2025 10:13:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2d506da9-da4a-4ae1-84c3-d20668dbdfefLiny<p><span>The image&nbsp; I&#39;ll put it in the comments.<br /><img style="max-height:240px;max-width:320px;" alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/_5F00_20251011175809_5F00_4_5F00_331.png" /><br /></span></p> <div class="host-lopnbnfpjmgpbppclhclehhgafnifija" style="position:relative;"></div> <div class="host-lopnbnfpjmgpbppclhclehhgafnifija" style="position:relative;"></div> <div class="host-lopnbnfpjmgpbppclhclehhgafnifija" style="position:relative;"></div><div style="clear:both;"></div>