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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>4X20 LCD Display Problem</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/33318/4x20-lcd-display-problem</link><description> 
Hi, i am working on 4X20 LCD ....i wrote code for that this code
is working but when trying to reset my board ...LCD displays
Different characters and the position of character also changed
so,PLz guide me why this problem happen... 

 
LCD shows Like</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: 4X20 LCD Display Problem</title><link>https://community.arm.com/thread/108648?ContentTypeID=1</link><pubDate>Thu, 28 Jan 2016 02:41:44 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:53e5a734-b8f2-4a69-bc62-48d8e4054c8a</guid><dc:creator>edPer Westermark</dc:creator><description>&lt;p&gt;&lt;p&gt;
So - have you bought a display that you also have a
datasheet/manual for? The documentation should tell you what
available commands there are.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: 4X20 LCD Display Problem</title><link>https://community.arm.com/thread/83020?ContentTypeID=1</link><pubDate>Thu, 28 Jan 2016 02:38:39 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:92e9c2e2-411c-43ca-9ae1-7736cc60cc09</guid><dc:creator>kishore reddy</dc:creator><description>&lt;p&gt;&lt;p&gt;
Thanks for your reply, 0x38--&amp;gt;is used to select 2 lines but i
am using 4 line LCD then how to select 4 lines&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: 4X20 LCD Display Problem</title><link>https://community.arm.com/thread/69488?ContentTypeID=1</link><pubDate>Wed, 27 Jan 2016 23:16:52 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:dc605064-3d4d-41e4-8ec1-af23048abcd7</guid><dc:creator>edPer Westermark</dc:creator><description>&lt;p&gt;&lt;p&gt;
&amp;quot;i tried lot of times but i didnt find solution....&amp;quot;&lt;/p&gt;

&lt;p&gt;
You tried what?&lt;/p&gt;

&lt;p&gt;
Remember that you aren&amp;#39;t in control of the processor pins during a
reset - so how are the pins handled in terms of pull-up/pull-down?
Have you made sure that the signalling really will stay idle during a
reset?&lt;/p&gt;

&lt;p&gt;
It&amp;#39;s important to always consider what happens with the processor
pins during a reset when selecting how to connect external hardware.
If you connect a relay, you don&amp;#39;t want to get an obligatory short
click in the relay on every reset. If connecting some communications
device, you want to avoid random data to be sent.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>