128 lines
6.1 KiB
HTML
128 lines
6.1 KiB
HTML
<?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>PULSIN 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>PULSIN 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_icon1.gif" border="0" alt="BS1 icon" title="BS1 icon" />
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<img src="../../graphics/pgm_icon2.gif" border="0" alt="BS2 icon" title="BS2 icon" />
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<img src="../../graphics/pgm_icon2e.gif" border="0" alt="BS2e icon" title="BS2e icon" />
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<img src="../../graphics/pgm_icon2sx.gif" border="0" alt="BS2sx icon" title="BS2sx icon" />
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<img src="../../graphics/pgm_icon2p.gif" border="0" alt="BS2p icon" title="BS2p icon" />
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<img src="../../graphics/pgm_icon2pe.gif" border="0" alt="BS2pe icon" title="BS2pe icon" />
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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/PULSIN.htm" target="" title="" alt="" class="MCXref_0" xrefformat="{paratext}">PULSIN</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>
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<p class="PlainText" style="text-align: center;">
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<img src="../../graphics/pulsin_sch.gif" />
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</p><pre class="BScode" xml:space="preserve">' PULSIN.BS1
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' This program uses PULSIN to measure a pulse generated by discharging a
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' 0.1 uF capacitor through a 1K resistor. Pressing the switch generates
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' the pulse, which should ideally be approximately 120 us (12 PULSIN units
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' of 10 us) long. Variations in component values may produce results that
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' are up to 10 units off from this value. For more information on calculating
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' resistor-capacitor timing, see the RCTIME command.
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' {$STAMP BS1}
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' {$PBASIC 1.0}
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SYMBOL Pulse = 7 ' pulse input pin
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SYMBOL time = W1 ' pulse width (10 uS units)
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Main:
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PULSIN Pulse, 1, time ' measure positive pulse
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IF time = 0 THEN Main ' if 0, try again
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DEBUG CLS, time ' else display result
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GOTO Main
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END
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</pre>
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<p class="PlainText"> </p>
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<p>NOTE: The example below is written for the BS2 and will run on any of the BS2-family modules. Modify the $STAMP directive (as required) before downloading to the BS2e, BS2sx, BS2p, BS2pe, or BS2px.</p><pre class="BScode" xml:space="preserve">' PULSIN.BS2
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' This program uses PULSIN to measure a pulse generated by discharging a
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' 0.1 uF capacitor through a 1K resistor. Pressing the switch generates
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' the pulse, which should ideally be approximately 120 us (60 PULSIN units
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' of 2 us) long (for BS2 and BS2e). Variations in component values may
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' produce results that are up to 10 units off from this value. For more
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' information on calculating resistor-capacitor timing, see the RCTIME
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' command.
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' {$STAMP BS2}
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' {$PBASIC 2.5}
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Pulse PIN 7 ' pulse input pin
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#SELECT $STAMP
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#CASE BS2, BS2E, BS2PE
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Scale CON $200 ' 2.0 us per unit
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#CASE BS2SX
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Scale CON $0CD ' 0.8 us per unit
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#CASE BS2P
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Scale CON $0C0 ' 0.75 us per unit
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#CASE BS2PX
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Scale CON $0CF ' 0.81 us per unit
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#ENDSELECT
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time VAR Word
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Main:
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PULSIN Pulse, 1, time ' measure positive pulse
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IF (time > 0) THEN ' if not 0
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DEBUG HOME,
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DEC time, " units ", CLREOL ' display raw input
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time = time */ Scale ' adjust for Stamp
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DEBUG CR,
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DEC time, " us " ' display microseconds
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ELSE
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DEBUG CLS, "Out of Range" ' else error message
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ENDIF
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PAUSE 200
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GOTO Main
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END</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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