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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>Measure time of impulse!</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/37883/measure-time-of-impulse</link><description> 
I need help with 89s52 programing! 

 
I need to measure time interval of impulse, who can be sort couple
ns and at least 500ms! 

 
How I can do that using Timers? 

 
Using keil! 
 </description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: Measure time of impulse!</title><link>https://community.arm.com/thread/100763?ContentTypeID=1</link><pubDate>Tue, 17 Jun 2008 08:44:04 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:714e88c6-bf8f-4d62-b753-c705655febc7</guid><dc:creator>ImPer Westermark</dc:creator><description>&lt;p&gt;&lt;p&gt;
From the number of requests for distributed problem solving I see,
my feeling is that the schools have improved a lot on distributed
programming since my days.&lt;/p&gt;

&lt;p&gt;
In a couple of years, this development model will be really big
with the companies. Every company hires a couple of guys who ask for
solutions on the net, and a couple of minutes, hours, days, weeks
later the solutions magically appears from the community.&lt;/p&gt;

&lt;p&gt;
The only part I haven&amp;#39;t fully grasped is exactly who &amp;quot;the
community&amp;quot; is.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Measure time of impulse!</title><link>https://community.arm.com/thread/89109?ContentTypeID=1</link><pubDate>Tue, 17 Jun 2008 07:01:37 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:167d362b-3b49-411e-b570-039f7e8baf8c</guid><dc:creator>Cpt. Vince</dc:creator><description>&lt;p&gt;&lt;p&gt;
I suspect that it is a class project, and the teacher wants the
student to implement the task and come back with an error report on
how it cannot be more accurate than +/- XYZ seconds, but with some
extra [credit] coding, the range of the measurement can span from
small to large. &lt;i&gt;&amp;quot;Good job, your diploma is in the mail... You&amp;#39;ll
be working with a Mr. Muland by the end of the week.&amp;quot;&lt;/i&gt;&lt;/p&gt;

&lt;p&gt;
I doubt it is really an engineer out there solving a real-world
problem and expecting this forum to send him the schematics to a
front-end capture circuit accurate to a those few nanoseconds, and
then write the 8051 code to extract that information.&lt;/p&gt;

&lt;p&gt;
--Cpt. Vince Foster&lt;br /&gt;
2nd Cannon Place&lt;br /&gt;
Fort Marcy Park, VA&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Measure time of impulse!</title><link>https://community.arm.com/thread/51861?ContentTypeID=1</link><pubDate>Tue, 17 Jun 2008 06:39:18 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:31a8d8be-7c76-4746-b6ab-a9e7539c5896</guid><dc:creator>erik  malund</dc:creator><description>&lt;p&gt;&lt;p&gt;
&lt;i&gt;who[sic] can be sort[sic] couple ns&lt;/i&gt;&lt;/p&gt;

&lt;p&gt;
How, in your wildest imagination, do you figure that you can
measure a pulse that is shorter than the clock cycle of the processor
you propose?&lt;/p&gt;

&lt;p&gt;
Erik&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Measure time of impulse!</title><link>https://community.arm.com/thread/50053?ContentTypeID=1</link><pubDate>Tue, 17 Jun 2008 06:03:38 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:db66a6ec-18e3-47df-bc8d-8faa81c3bbfb</guid><dc:creator>Cpt. Vince</dc:creator><description>&lt;p&gt;&lt;p&gt;
Read page 8 of this file...&lt;br /&gt;
&lt;a href="http://www.atmel.com/dyn/resources/prod_documents/doc1919.pdf"&gt;www.atmel.com/.../doc1919.pdf&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;
Then figure it out for yourself.&lt;/p&gt;

&lt;p&gt;
--Cpt. Vince Foster&lt;br /&gt;
2nd Cannon Place&lt;br /&gt;
Fort Marcy Park, VA&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>