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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>Serial echo&amp;#39;ed back</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/13865/serial-echo-ed-back</link><description> Using the Dallas 80C320 with Keil evaluation software. I am seeing the data sent to the Uc echoed back to the sender. I am not intentionally echoing the data. I can&amp;#39;t find any mention of this in the data sheets or the Keil website. Anyone have any ideas</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: Serial echo'ed back</title><link>https://community.arm.com/thread/53478?ContentTypeID=1</link><pubDate>Mon, 08 Jan 2001 09:18:06 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:65f291d7-3912-47e2-95fd-aaca879a794f</guid><dc:creator>Keil Support</dc:creator><description>&lt;p&gt;Oops,&lt;br /&gt;
&lt;br /&gt;
I shoulda remembered this.  In this case, the echo is done by the Keil getchar routine.  Note that this is documented in the C51 User&amp;#39;s Guide.  The following knowledgebase article discusses this as well as a workaround.&lt;br /&gt;
&lt;br /&gt;
&lt;a href="http://www.keil.com/support/docs/1791.htm"&gt;http://www.keil.com/support/docs/1791.htm&lt;/a&gt;&lt;br /&gt;
&lt;br /&gt;
&lt;b&gt;Jon&lt;/b&gt;&lt;br /&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Serial echo'ed back</title><link>https://community.arm.com/thread/53482?ContentTypeID=1</link><pubDate>Mon, 08 Jan 2001 05:24:48 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:051dad14-c843-4ee4-89a6-2512a28639b5</guid><dc:creator>Graham Cole</dc:creator><description>&lt;p&gt;It can be very easy to build in an accidental hardware echo. Crosstalk from the transmit line to the receive line is the usual culprit.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Serial echo'ed back</title><link>https://community.arm.com/thread/37194?ContentTypeID=1</link><pubDate>Thu, 04 Jan 2001 11:16:09 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:088a8ad7-c8b3-4b50-b03a-c84b7de9234d</guid><dc:creator>Keil Support</dc:creator><description>&lt;p&gt;Have you checked the following:&lt;br /&gt;
&lt;br /&gt;
* Local Echo is turned on in your terminal program.&lt;br /&gt;
* You&amp;#39;re accidentally writing received characters to SBUF.&lt;br /&gt;
* You have a hardware ECHO somehow built-in to your target board.  (I don&amp;#39;t have a great idea of how you&amp;#39;ld accidentally do this:-)&lt;br /&gt;
&lt;br /&gt;
&lt;b&gt;Jon&lt;/b&gt;&lt;br /&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>