<?xml version="1.0" encoding="UTF-8" ?>
<?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>CORTEX M4 - RESET Pin (Problem)</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/28050/cortex-m4---reset-pin-problem</link><description> 
My Controller is MK10N512VLQ 

 
when i have done programing and code Restarts 

 
The RESET pin goes like 40us high and 10us low and it is toggling
continuoslly. This is observed in number of Microcontrollers. 
 </description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: CORTEX M4 - RESET Pin (Problem)</title><link>https://community.arm.com/thread/143074?ContentTypeID=1</link><pubDate>Thu, 05 Jan 2012 00:58:55 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:14a0afd6-7c58-464e-9b66-3e06640f8b6c</guid><dc:creator>Tamiryan Michael</dc:creator><description>&lt;p&gt;&lt;p&gt;
Broken external oscillator...? Did you try starting up using the
internal one?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: CORTEX M4 - RESET Pin (Problem)</title><link>https://community.arm.com/thread/140142?ContentTypeID=1</link><pubDate>Wed, 04 Jan 2012 23:42:33 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:0783427b-0f30-46d1-8251-e08a5b3dfabd</guid><dc:creator>dinesh V</dc:creator><description>&lt;p&gt;&lt;p&gt;
I have gone Through the manual,but i didnt find information
regarding it thats why i have asked.&lt;br /&gt;
it says it is because of Hardware error kernel creating this
event.&lt;br /&gt;
but i did not find the source of error&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: CORTEX M4 - RESET Pin (Problem)</title><link>https://community.arm.com/thread/136681?ContentTypeID=1</link><pubDate>Wed, 04 Jan 2012 22:08:33 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:5d423fba-450c-49e3-b4fb-074d89daca9d</guid><dc:creator>Tamiryan Michael</dc:creator><description>&lt;p&gt;&lt;p&gt;
&lt;i&gt;Reset source: Core Lockup Event Reset&lt;/i&gt;&lt;/p&gt;

&lt;p&gt;
&lt;i&gt;Can anybody Tell me why this EVENT Occured&lt;/i&gt;&lt;/p&gt;

&lt;p&gt;
Dude, why not look in the chip&amp;#39;s user manual?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: CORTEX M4 - RESET Pin (Problem)</title><link>https://community.arm.com/thread/127303?ContentTypeID=1</link><pubDate>Wed, 04 Jan 2012 22:02:54 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:99f18aa6-f9b5-4d7a-b307-3abde908cb3a</guid><dc:creator>dinesh V</dc:creator><description>&lt;p&gt;&lt;p&gt;
Now i Know that RESET Source is&lt;/p&gt;

&lt;p&gt;
Reset source: Core Lockup Event Reset&lt;/p&gt;

&lt;p&gt;
Can anybody Tell me why this EVENT Occured&lt;/p&gt;

&lt;p&gt;
Thanks for your support&lt;br /&gt;
Dinesh Vaghela&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: CORTEX M4 - RESET Pin (Problem)</title><link>https://community.arm.com/thread/119586?ContentTypeID=1</link><pubDate>Wed, 04 Jan 2012 01:16:17 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:2509d7e1-e3e3-4cf8-b73b-b3d688397204</guid><dc:creator>ImPer Westermark</dc:creator><description>&lt;p&gt;&lt;p&gt;
By the way - you have enough stable supply voltage so you don&amp;#39;t
suffer any brownout auto-reset directly the processor starts to
run?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: CORTEX M4 - RESET Pin (Problem)</title><link>https://community.arm.com/thread/105629?ContentTypeID=1</link><pubDate>Wed, 04 Jan 2012 00:16:23 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:50fbcd9e-d60b-4bf3-ac7b-7841ed89d997</guid><dc:creator>dinesh V</dc:creator><description>&lt;p&gt;&lt;p&gt;
This is the Waveform on RESET pin after POR&lt;/p&gt;

&lt;p&gt;

.|&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;|..|&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;|..|&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;|..|&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;|..|&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;&amp;quot;|..&lt;br /&gt;

Ton=40us, Toff=10us&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: CORTEX M4 - RESET Pin (Problem)</title><link>https://community.arm.com/thread/79882?ContentTypeID=1</link><pubDate>Tue, 03 Jan 2012 23:58:02 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:53424c07-2042-4ab2-b2f2-6e261c64f519</guid><dc:creator>dinesh V</dc:creator><description>&lt;p&gt;&lt;p&gt;
Code execution has not reached upto void main().&lt;br /&gt;
and i also tried to debug it but it is not possible.&lt;br /&gt;
u can see that&lt;br /&gt;
the RESET pin Low Time is only 10 microseconds.&lt;br /&gt;
and RESET pin High Time is only 40 microseconds.&lt;br /&gt;
So,it is doing reset i think in bootloader code.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: CORTEX M4 - RESET Pin (Problem)</title><link>https://community.arm.com/thread/60233?ContentTypeID=1</link><pubDate>Tue, 03 Jan 2012 22:15:14 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:f52dafd4-7d1e-408d-9b7a-e046040409eb</guid><dc:creator>Robert &amp;#160;</dc:creator><description>&lt;p&gt;&lt;p&gt;
Have you disabled the watchdog (or do you service it)?&lt;/p&gt;

&lt;p&gt;
Watchdog overflow can be the reason for this behavior since it can
also assert external RESET pin.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>