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<?xml-stylesheet type="text/xsl" href="https://community.arm.com/utility/feedstylesheets/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/"><channel><title>Interrupt lost?</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/13744/interrupt-lost</link><description> I want to sample a signal. Using the both external interrupts to start sampling. The timer 0 interrupt is used for the time base. If I put the reload value very high, there are only some sates more than the timer-ISR need for executing, I get false sampling</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: Interrupt lost?</title><link>https://community.arm.com/thread/37180?ContentTypeID=1</link><pubDate>Mon, 27 Nov 2000 15:07:18 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:0cf5c86e-acb4-4838-b68f-978f671bbc0e</guid><dc:creator>Keil Support</dc:creator><description>&lt;p&gt;&lt;i&gt;Can it be true, that a interrupt be lost? I don&amp;#39;t think so, but I have no other idea.&lt;/i&gt;&lt;br /&gt;
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Yes.  You can lose interrupts for any of several reasons.&lt;br /&gt;
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* The interrupt toggles the input line too fast for the CPU to see.&lt;br /&gt;
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* The interrupt service routine is to slow and one or more interrupt conditions occur while you are still servicing the first one.&lt;br /&gt;
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Can you characterize the situation where interrupts are lost a little better?&lt;br /&gt;
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&lt;b&gt;Keil Support&lt;/b&gt;&lt;br /&gt;
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