97 lines
5.0 KiB
HTML
97 lines
5.0 KiB
HTML
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<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">
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<head><title>CONFIGPIN Example</title>
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<link href="../../SkinSupport/MadCap.css" rel="stylesheet" />
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<link href="../../Resources/Stylesheets/BSE_Help.css" rel="stylesheet" />
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<script src="../../SkinSupport/MadCapAll.js" type="text/javascript">
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</script>
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</head>
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<body>
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<h1>CONFIGPIN Example</h1>
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<div class="ImagePlusCaption">
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<div class="Col2">
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<p>
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<img src="../../graphics/pgm_icon2px.gif" border="0" alt="BS2px icon" title="BS2px icon" />
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</p>
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</div>
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<p style="text-align: right;">Syntax: <a href="../Commands/CONFIGPIN.htm" target="" title="" alt="" class="MCXref_0" xrefformat="{paratext}">CONFIGPIN</a></p>
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<p> </p>
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</div>
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<p class="clear"> </p>
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<p> </p><pre class="BScode" xml:space="preserve">' CONFIGPIN.BPX
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' This example demonstrates the use of the CONFIGPIN command.
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' All I/O pins are set to inputs with various combinations of
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' Pull-Up Resistor, Logic Threshold and Schmitt-Trigger properties.
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' While running, this program will constantly display the state of all
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' input pins along with an indication of the configuration for each group
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' of pins. Try connecting different input signals to the I/O pins (such as
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' buttons, a function generator with a slowing sweeping signal (0 to 5
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' VDC)) or simply running your fingers across the I/O pins and note how
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' they react based upon their configured property.
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' {$STAMP BS2px}
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' {$PBASIC 2.5}
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#IF $STAMP <> BS2PX #THEN
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#ERROR "This program requires a BS2px."
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#ENDIF
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Setup:
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CONFIGPIN DIRECTION, %0000000000000000 ' Set all I/O pins to inputs
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CONFIGPIN PULLUP, %1111111111110000 ' Enable pull-ups on pins 4 - 15
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CONFIGPIN THRESHOLD, %0000111100000000 ' Set P8-P11 to CMOS, others TTL
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CONFIGPIN SCHMITT, %1111000000000000 ' Enable Schmitt-Triggers P12-P15
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DEBUG CLS,
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" BS2px INPUT PIN CONFIGURATION TEST", CR,
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"=========================================================", CR,
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" P15-P12: Pull-Up Resistors, TTL & Schmitt-Triggers ", CR,
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" / ", CR,
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" / P11-P8: Pull-Up Resistors & CMOS ", CR,
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" / / ", CR,
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" | / P7-P4: Pull-Up Resistors & TTL ", CR,
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" | | / ", CR,
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" | | | P3-P0: Normal ", CR,
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" | | | / ", CR,
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" | | | | ", CR,
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"---- ---- ---- ---- "
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Main:
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DO
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' Display input pin states
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DEBUG CRSRXY, 0, 12 ,
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BIN4 IND, " ", BIN4 INC, " ", BIN4 INB, " ", BIN4 INA
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LOOP
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</pre>
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<div class="Col2">
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<div class="MasterFoot">
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<p MadCap:conditions="BSEconditions.BSEWebHelp (Primary)-INCLUDE"><a href="../../HomeTopics/HomePage.htm">Go to Welcome page</a>
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</p>
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</div>
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</div>
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<div class="Col2">
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<div class="MasterFoot">
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<p style="text-align: right;"><span class="ContactInfoProjectName">BASIC Stamp Help</span> <![CDATA[ ]]><span class="ContactInfoVersion#">Version 2.5.4</span> <![CDATA[ ]]></p>
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<p style="text-align: right;">Copyright © <span class="ContactInfoCompanyName">Parallax Inc.</span></p>
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<p style="text-align: right;"><span class="SystemShortDate">8/8/2012</span>
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</p>
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</div>
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</div>
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