<?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>communication problem</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/23328/communication-problem</link><description> 
Hi all, 

 
I am working on led display project, 
i am using AT89S53(8051) for programming(keil C) . from last three
days i 
am facing serious problem with communication. I want to communicate
PC to LED 
there is another IC on board provided me, that</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: communication problem</title><link>https://community.arm.com/thread/100618?ContentTypeID=1</link><pubDate>Wed, 07 May 2008 05:35:21 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:14d51090-d2e3-4c4a-9144-29bfe949721a</guid><dc:creator>erik  malund</dc:creator><description>&lt;p&gt;&lt;p&gt;
he is connecting 485 to a PC COM port THAT is the problem.&lt;/p&gt;

&lt;p&gt;
Erik&lt;/p&gt;

&lt;p&gt;
PS once he either get a B&amp;amp;B converter or get a 232 interface
on his board we can discuss the code, which might and might not be
OK.&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: communication problem</title><link>https://community.arm.com/thread/100616?ContentTypeID=1</link><pubDate>Wed, 07 May 2008 01:16:28 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:6e65932d-4cd2-45bb-9ac1-75db4e912110</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;&lt;p&gt;
Please read the instructions on how to post source code:&lt;br /&gt;
&lt;a href="http://www.danlhenry.com/caps/keil_code.png"&gt;www.danlhenry.com/.../keil_code.png&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;
Note that there is no such thing as an &lt;b&gt;&amp;lt;endpre&amp;gt;&lt;/b&gt;
tag!&lt;/p&gt;

&lt;p&gt;
Don&amp;#39;t manually re-type the code into the post - use only
copy-and-paste;&lt;/p&gt;

&lt;p&gt;
Note that TABs don&amp;#39;t work (well) - use spaces instead,&lt;/p&gt;

&lt;p&gt;
and don&amp;#39;t forget to check it in the &amp;#39;&lt;b&gt;Preview&lt;/b&gt;&amp;#39;...&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: communication problem</title><link>https://community.arm.com/thread/76266?ContentTypeID=1</link><pubDate>Wed, 07 May 2008 01:13:02 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:13d21e4f-101c-4285-8635-b274bca37806</guid><dc:creator>tien ngok</dc:creator><description>&lt;p&gt;&lt;p&gt;
Hi you need help...&lt;/p&gt;

&lt;p&gt;
You can use this code in your code.&lt;/p&gt;

&lt;p&gt;
I now making a rutine to draw images,text,geometrical object to
LCD but i dont know what is faster??????&lt;/p&gt;

&lt;pre&gt;
  TMOD = 0x21;
  //Use Timer 2 generate Baud Rate , T2CON  Registers.
  //equation:  Baud Rate=Oscillator Frequency/[32*(65536-RCAP2H,RCAP2L)]
  CP_RL2=0;//Reload
  C_T2 = 0;//Timer
  EXEN2= 0;
  TCLK = 1;
  RCLK = 1;
  EXF2 = 0;
  RCAP2L  =0xFD;//Baud Rate=115.200 ( RCAP2H,RCAP2L=0xFFFD)
  RCAP2H  =0xFF;
  TR2  = 1;//Start timer2.

&amp;lt;endpre&amp;gt;


&lt;/pre&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: communication problem</title><link>https://community.arm.com/thread/49848?ContentTypeID=1</link><pubDate>Wed, 07 May 2008 01:04:57 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:3d390bf3-dcfe-4372-aa46-13c2761aedf9</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;&lt;p&gt;
You do realise that the MAX1487 is an RS-&lt;b&gt;485&lt;/b&gt;/RS-&lt;b&gt;422&lt;/b&gt;
Transceiver, don&amp;#39;t you?&lt;/p&gt;

&lt;p&gt;
&lt;a href="http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1111"&gt;www.maxim-ic.com/.../1111&lt;/a&gt;&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>