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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>not able to re-enter in hareware interrupt.</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/37989/not-able-to-re-enter-in-hareware-interrupt</link><description> 
Hi all, 

 
I am using lpc2138 working with EXT3 interrupt. hardware interrupt
works fine for first time when I reset the board. But thereafter it
does not detect any interrupt on EXT3. Plz suggest any
re-initialization I have to do to detect hardware</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: not able to re-enter in hareware interrupt.</title><link>https://community.arm.com/thread/114223?ContentTypeID=1</link><pubDate>Fri, 05 Sep 2008 02:28:13 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:7e5fd05e-b852-4f38-a845-a2494bf16e2a</guid><dc:creator>vikram gaikwad</dc:creator><description>&lt;p&gt;&lt;p&gt;
I am using edge trigger.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: not able to re-enter in hareware interrupt.</title><link>https://community.arm.com/thread/101039?ContentTypeID=1</link><pubDate>Fri, 05 Sep 2008 02:13:56 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:0e144ec5-7beb-48ee-8565-935056e86f0d</guid><dc:creator>ImPer Westermark</dc:creator><description>&lt;p&gt;&lt;p&gt;
Do you have edge-trigged or level-trigged interrupts?&lt;/p&gt;

&lt;p&gt;
If level-trigged, then it will not be possible to reset the
interrupt until the interrupt signal is back to idle.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: not able to re-enter in hareware interrupt.</title><link>https://community.arm.com/thread/76642?ContentTypeID=1</link><pubDate>Fri, 05 Sep 2008 01:51:28 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:9d9ba354-af5f-4cd8-95de-4dc30ec3cc3d</guid><dc:creator>vikram gaikwad</dc:creator><description>&lt;p&gt;&lt;p&gt;
Thanks for showing interest.&lt;/p&gt;

&lt;p&gt;
I am doing this in my ISR&lt;/p&gt;

&lt;p&gt;
EXTINT = 0x08; //clear EINT3 flag&lt;br /&gt;
VICVectAddr = 0; /* Update VIC priorities */&lt;/p&gt;

&lt;p&gt;
Then also 2nd time onwords it is not working.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: not able to re-enter in hareware interrupt.</title><link>https://community.arm.com/thread/52362?ContentTypeID=1</link><pubDate>Fri, 05 Sep 2008 01:14:52 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:b4eee673-cb7e-42f6-9806-07cb321d37c8</guid><dc:creator>ImPer Westermark</dc:creator><description>&lt;p&gt;&lt;p&gt;
Are you acknowledging the ext3 interrupt and the vic? You need
these two assigns to get any more interrupts from the same
source.&lt;/p&gt;

&lt;p&gt;
Searching for EINT3 in the user manual should give you all
information needed to reset the EINT3 interrupt source.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>