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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>SPI0 Communication</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/37894/spi0-communication</link><description> 
While trying to communicate with an accelerometer via SPI, I
observe that my S0SDR register supplies only a FFFF as a value and
does not accept any other value. 
Can somebody help? 
 </description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: SPI0 Communication</title><link>https://community.arm.com/thread/51873?ContentTypeID=1</link><pubDate>Thu, 19 Jun 2008 13:20:55 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:121c87fb-0d7b-4b6b-89e7-ee1b31f56984</guid><dc:creator>ImPer Westermark</dc:creator><description>&lt;p&gt;&lt;p&gt;
First help yourself by supplying more information.&lt;/p&gt;

&lt;p&gt;
What processor are you using?&lt;/p&gt;

&lt;p&gt;
Have you verified that your accelerometer is correctly
connected?&lt;/p&gt;

&lt;p&gt;
Have you turned on power to the SPI device?&lt;/p&gt;

&lt;p&gt;
Have you mapped the processor pins as SPI pins?&lt;/p&gt;

&lt;p&gt;
Have you checked with an oscilloscope that the clock line sends
out a burst of pulses when you do a transfer?&lt;/p&gt;

&lt;p&gt;
Have you checked if something happens on the data line?&lt;/p&gt;

&lt;p&gt;
Are you running polled or using an interrupt?&lt;/p&gt;

&lt;p&gt;
Exactly what have you done?&lt;/p&gt;

&lt;p&gt;
Are we expected to guess what your source code looks like?&lt;/p&gt;
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