<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns:MadCap="http://www.madcapsoftware.com/Schemas/MadCap.xsd" MadCap:lastBlockDepth="6" MadCap:lastHeight="94" MadCap:lastWidth="853" MadCap:disableMasterStylesheet="true" MadCap:tocPath="" MadCap:InPreviewMode="false" MadCap:PreloadImages="false" MadCap:RuntimeFileType="Topic" MadCap:TargetType="WebHelp" lang="en-us" xml:lang="en-us" MadCap:PathToHelpSystem="../../../" MadCap:HelpSystemFileName="Default.xml" MadCap:SearchType="Stem">
<head><title>COMPARE Example</title>
<link href="../../SkinSupport/MadCap.css" rel="stylesheet" />
<link href="../../Resources/Stylesheets/BSE_Help.css" rel="stylesheet" />
<script src="../../SkinSupport/MadCapAll.js" type="text/javascript">
</script>
</head>
<body>
<h1>COMPARE Example</h1>
<div class="ImagePlusCaption">
<div class="Col2">
<p>
<img src="../../graphics/pgm_icon2px.gif" border="0" alt="BS2px icon" title="BS2px icon" />
</p>
</div>
<p style="text-align: right;">Sytnax: <a href="../Commands/COMPARE.htm" target="" title="" alt="" class="MCXref_0" xrefformat="{paratext}">COMPARE</a></p>
<p> </p>
</div>
<p class="clear"> </p>
<p class="PlainText"> </p><pre class="BScode" xml:space="preserve">' COMPARE.BPX
' This example demonstrates the use of the COMPARE command.
' Connect two variable voltage sources (0 to 5 volts) on I/O pins
' P1 and P2 (or a button on each pin connected to ground). Run the
' program and watch the Debug Terminal display as you adjust the
' variable voltage or press the buttons.
' {$STAMP BS2px}
' {$PBASIC 2.5}
#IF $STAMP <> BS2PX #THEN
#ERROR "This program requires a BS2px."
#ENDIF
result VAR Bit
Setup:
' P0 = output, all others = input
CONFIGPIN DIRECTION, %0000000000000001
' Enable pull-ups on P1 and P2
CONFIGPIN PULLUP, %0000000000000110
DEBUG CLS,
"BS2px Comparator Demonstration", CR,
"==============================", CR,
CR,
"Input Voltage: P1 > P2", CR,
"Output State: P0 = 0"
Main:
DO ' Display P1/P2 comparison
COMPARE 1, result
IF (result = 0) THEN
DEBUG CRSRXY, 18, 3, ">"
ELSE
DEBUG CRSRXY, 18, 3, "<"
ENDIF
DEBUG CRSRXY, 19, 4, BIN1 result
LOOP</pre>
<div class="Col2">
<div class="MasterFoot">
<p MadCap:conditions="BSEconditions.BSEWebHelp (Primary)-INCLUDE"><a href="../../HomeTopics/HomePage.htm">Go to Welcome page</a>
</p>
</div>
</div>
<div class="Col2">
<div class="MasterFoot">
<p style="text-align: right;"><span class="ContactInfoProjectName">BASIC Stamp Help</span> <![CDATA[ ]]><span class="ContactInfoVersion#">Version 2.5.4</span> <![CDATA[ ]]></p>
<p style="text-align: right;">Copyright © <span class="ContactInfoCompanyName">Parallax Inc.</span></p>
<p style="text-align: right;"><span class="SystemShortDate">8/8/2012</span>
</p>
</div>
</div>
<script type="text/javascript">/* <![CDATA[ */
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-285614-1']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
/* ]]> */</script>
<script type="text/javascript" src="../../SkinSupport/MadCapBodyEnd.js">
</script>
</body>
</html>