<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>How to do nrf52840 system on low power mode without softdevice?</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/26225/how-to-do-nrf52840-system-on-low-power-mode-without-softdevice</link><description>Hi,
I&amp;#39;m using nrf52840 with openThread. I like set the MCU in system on low power mode. RTC1 is used as application timer for wake up and start transmission periodicly. For now, I run ot as SED and that works fine. 
 What is needed to realize low power</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Thu, 26 Oct 2017 12:33:26 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/26225/how-to-do-nrf52840-system-on-low-power-mode-without-softdevice" /><item><title>RE: How to do nrf52840 system on low power mode without softdevice?</title><link>https://devzone.nordicsemi.com/thread/103268?ContentTypeID=1</link><pubDate>Thu, 26 Oct 2017 12:33:26 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:f5c81e55-fd11-4e15-8e62-adf772807207</guid><dc:creator>bjorn-spockeli</dc:creator><description>&lt;p&gt;Happy to help :) Let me know if you run in to any issues.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: How to do nrf52840 system on low power mode without softdevice?</title><link>https://devzone.nordicsemi.com/thread/103267?ContentTypeID=1</link><pubDate>Thu, 26 Oct 2017 12:27:55 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:dbd0d447-1f98-476d-944c-f399578da8fd</guid><dc:creator>Dimitri</dc:creator><description>&lt;p&gt;Thanks so fare, I had not time to test it out yet. I will test it ASAP, after my holidays. If no co worker did test it until then.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: How to do nrf52840 system on low power mode without softdevice?</title><link>https://devzone.nordicsemi.com/thread/103266?ContentTypeID=1</link><pubDate>Wed, 25 Oct 2017 08:49:25 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:e1b8b257-ac29-4463-8229-05d81181fd55</guid><dc:creator>bjorn-spockeli</dc:creator><description>&lt;p&gt;Hi Dimitri,&lt;/p&gt;
&lt;p&gt;I believe you simply have to call the following instructions&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;// Wait for an event.
__WFE();
// Clear the internal event register.
__SEV();
__WFE();
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;in order to put the nRF52840 in System ON: Low Power when you&amp;#39;re not using the S140 SoftDevice.&lt;/p&gt;
&lt;p&gt;Best regards&lt;/p&gt;
&lt;p&gt;Bjørn&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>