116 lines
6.0 KiB
HTML
116 lines
6.0 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>INPUT / OUTPUT Examples</title>
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<link href="../../SkinSupport/MadCap.css" rel="stylesheet" />
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<body>
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<h1>INPUT / OUTPUT Examples</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/INPUT.htm" target="" title="" alt="" class="MCXref_0" xrefformat="{paratext}">INPUT</a>, <a href="../Commands/OUTPUT.htm" target="" title="" alt="" class="MCXref_0" xrefformat="{paratext}">OUTPUT</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">' INPUT_OUTPUT.BS1
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' This program demonstrates how the input/output direction of a pin is
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' determined by the corresponding bit of DIRS. It also shows that the
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' state of the pin itself (as reflected by the corresponding bit of PINS)
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' is determined by the outside world when the pin is an input, and by the
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' corresponding bit of PINS when it's an output. To set up the demo,
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' connect a 10k resistor from +5V to P7 on the BASIC Stamp. The resistor
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' to +5V puts a high (1) on the pin when it's an input. The BASIC Stamp
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' can override this state by writing a low (0) to bit 7 of OUTS and
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' changing the pin to output.
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' {$STAMP BS1}
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' {$PBASIC 1.0}
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Main:
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INPUT 7 ' Make P7 an input
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DEBUG "State of P7: ", #PIN7, CR
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PIN7 = 0 ' Write 0 to output latch
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DEBUG "After 0 written to OUT7: "
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DEBUG #PIN7, CR
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OUTPUT 7 ' Make P7 an output
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DEBUG "After P7 changed to output: "
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DEBUG #PIN7
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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 $STAMP directive (as required) before downloading to the BS2e, BS2sx, BS2p, BS2pe, or BS2px.</p><pre class="BScode" xml:space="preserve">' INPUT_OUTPUT.BS2
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' This program demonstrates how the input/output direction of a pin is
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' determined by the corresponding bit of DIRS. It also shows that the
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' state of the pin itself (as reflected by the corresponding bit of PINS)
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' is determined by the outside world when the pin is an input, and by the
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' corresponding bit of PINS when it's an output. To set up the demo,
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' connect a 10k resistor from +5V to P7 on the BASIC Stamp. The resistor
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' to +5V puts a high (1) on the pin when it's an input. The BASIC Stamp
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' can override this state by writing a low (0) to bit 7 of OUTS and
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' changing the pin to output.
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' {$STAMP BS2}
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' {$PBASIC 2.5}
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Main:
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INPUT 7 ' Make P7 an input
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DEBUG "State of P7: ",
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BIN1 IN7, CR
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OUT7 = 0 ' Write 0 to output latch
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DEBUG "After 0 written to OUT7: ",
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BIN1 IN7, CR
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OUTPUT 7 ' Make P7 an output
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DEBUG "After P7 changed to output: ",
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BIN1 IN7
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END
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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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