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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>SPI Clock issue of SPI with LPC2378</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/29832/spi-clock-issue-of-spi-with-lpc2378</link><description> 
 Dear Sir, 
On Simulation a proper SPI clock is generated but in actual noisy
clock is observed on CRO 
1)Clock signal should be in square wave form? So if so for what
reason noisy clock is seen on CRO. 
I am sending 0x55 data on MOSI and it is also</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: SPI Clock issue of SPI with LPC2378</title><link>https://community.arm.com/thread/92919?ContentTypeID=1</link><pubDate>Fri, 07 Dec 2012 04:05:08 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:6c695c15-cc89-4534-a54a-0a8f9c4702d6</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;&lt;p&gt;
So you need to investigate &lt;b&gt;why&lt;/b&gt; your clock is noisy...&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI Clock issue of SPI with LPC2378</title><link>https://community.arm.com/thread/67914?ContentTypeID=1</link><pubDate>Fri, 07 Dec 2012 04:02:38 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:c162ce78-9015-4c0f-a25d-25ae93824ee6</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;&lt;p&gt;
On what basis do you think that?&lt;/p&gt;

&lt;p&gt;
What tests have you conducted to investigate your hypothesis?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: SPI Clock issue of SPI with LPC2378</title><link>https://community.arm.com/thread/67917?ContentTypeID=1</link><pubDate>Fri, 07 Dec 2012 02:40:30 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:e700b912-bb5f-4872-8c4a-7975483cf6d9</guid><dc:creator>ImPer Westermark</dc:creator><description>&lt;p&gt;&lt;p&gt;
The LPC2378 do not generate any noisy clock signal unless you have
some errors on the outside of the processor. Or the pin isn&amp;#39;t
actually configured as CLK so what you see is something else.&lt;/p&gt;

&lt;p&gt;
You write &amp;quot;Buffer1&amp;quot; - note that even if you write all of your post
in bold, we readers will still not be able to know what &amp;quot;Buffer1&amp;quot;
is.&lt;/p&gt;

&lt;p&gt;
Besides the bold text, you haven&amp;#39;t given much information. Are all
signals correctly configured? Are they correctly connected? Do the
memory chip receive any slave select signal, so the MISO line gets
properly driven? Have you selected the correct phase and polarity for
the clock signal? Are both processor and memory using same supply
voltage? Are you sending the correct commands to the memory chip?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>