Initial commit after migrating repo and assuring the product launches
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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>SHIFTOUT Example</title>
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</head>
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<body>
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<h1>SHIFTOUT 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_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/SHIFTOUT.htm" target="" title="" alt="" class="MCXref_0" xrefformat="{paratext}">SHIFTOUT</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/74HC595_sch.gif" />
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</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 $STAMP directive (as required) before downloading to the BS2e, BS2sx, BS2p, BS2pe, or BS2px.</p><pre class="BScode" xml:space="preserve">' SHIFTOUT.BS2
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' This program uses the SHIFTOUT command to interface to the 74HC595 shift
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' register as an 8-bit output port. The '595 requires a minimum of three
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' inputs: data, clock, and latch. See the figure in the SHIFTOUT command
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' description in the manual for wiring information. SHIFTOUT automatically
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' handles the data and clock, pulsing the clock to shift data bits into the
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' '595. An extra step (pulsing the latch input) is required to move the
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' shifted bits in parallel onto the '595's output pins. Note: this code does
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' not control the output-enable or reset lines of the '595. This means that
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' before the BASIC Stamp first sends, the '595's output latches are turned
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' on and may contain random data. In critical applications, you should hold
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' output-enable high (disabled) until the BASIC Stamp can take control.
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' {$STAMP BS2}
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' {$PBASIC 2.5}
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Dpin PIN 0 ' data pin to 74HC595
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Clk PIN 1 ' shift clock to 74HC595
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Latch PIN 2 ' latch 74HC595 outputs
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counter VAR Byte
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Setup:
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LOW Latch ' initialize latch output
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' This loop moves the 8-bit value 'counter' onto the output lines of the
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' '595, pauses, then increments counter and repeats. The data is shifted
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' MSB first so that the MSB appears on pin QH and the lsb on QA. Changing
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' MSBFIRST to LSBFIRST causes the data to appear backwards on the outputs.
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Main:
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DO
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SHIFTOUT Dpin, Clk, MSBFIRST, [counter] ' send the bits
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PULSOUT Latch, 1 ' transfer to outputs
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PAUSE 100 ' Wait 0.1 seconds
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counter = counter + 1 ' increment counter
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LOOP
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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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</div>
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</div>
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