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<?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>Saadc + FreeRTOS tickless idle -&amp;gt; xTimer not waking up</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/13643/saadc-freertos-tickless-idle---xtimer-not-waking-up</link><description>Hi,
I have a strange problem with FreeRTOS xTimers not waking up, that I so far have tracked down to be related to PPI driven SAADC combined with FreeRTOS Tickless Idle. 
 The problem occurs if the sampling period of the adc is faster than any periodic</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Thu, 15 Dec 2016 13:53:37 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/13643/saadc-freertos-tickless-idle---xtimer-not-waking-up" /><item><title>RE: Saadc + FreeRTOS tickless idle -&gt; xTimer not waking up</title><link>https://devzone.nordicsemi.com/thread/52124?ContentTypeID=1</link><pubDate>Thu, 15 Dec 2016 13:53:37 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:92b0a05d-477d-49ca-9dbf-b7387962ad13</guid><dc:creator>Erik</dc:creator><description>&lt;p&gt;I have upgraded to SDK12.0.1 and SD3.0.0 and I don&amp;#39;t have any problems with Tickless idle, timers or SAADC anymore.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Saadc + FreeRTOS tickless idle -&gt; xTimer not waking up</title><link>https://devzone.nordicsemi.com/thread/52123?ContentTypeID=1</link><pubDate>Fri, 20 May 2016 13:29:40 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:b28b09a3-5831-4500-94e5-9076658b61fe</guid><dc:creator>Erik</dc:creator><description>&lt;p&gt;Yes I stil have the problem, but have had to work on other pressing matters :/ Unfortunately I can&amp;#39;t share all of my code here as it is a project for a custommer. I will test this first though:
&lt;a href="https://devzone.nordicsemi.com/question/80413/freertos-tick-issue-can-lead-to-lockups-sdk11/"&gt;devzone.nordicsemi.com/.../&lt;/a&gt;
Then I can send parts of the code to you if I still got the problem and share the solution here later :)&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Saadc + FreeRTOS tickless idle -&gt; xTimer not waking up</title><link>https://devzone.nordicsemi.com/thread/52122?ContentTypeID=1</link><pubDate>Tue, 10 May 2016 06:38:43 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:6f343418-6a70-4073-8dcb-9dfe76bc10fc</guid><dc:creator>Susheel Nuguru</dc:creator><description>&lt;p&gt;Hi, do you still have this problem, can you share your project with me?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>