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123 lines
4.7 KiB
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123 lines
4.7 KiB
HTML
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<head>
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<title>AVRDUDE: 4.3.1 Parent Part</title>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="Parent-Part"></a>
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<table class="header" cellpadding="1" cellspacing="1" border="0">
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<tr><td valign="middle" align="left">[<a href="avrdude_9.html#Configuration-File" title="Beginning of this chapter or previous chapter"> << </a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_12.html#Part-Definitions" title="Previous section in reading order"> < </a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_12.html#Part-Definitions" title="Up section"> Up </a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_14.html#Instruction-Format" title="Next section in reading order"> > </a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_16.html#Programmer-Specific-Information" title="Next chapter"> >> </a>]</td>
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<td valign="middle" align="left"> </td>
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<td valign="middle" align="left"> </td>
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<td valign="middle" align="left"> </td>
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<td valign="middle" align="left"> </td>
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<td valign="middle" align="left">[<a href="avrdude.html#Introduction" title="Cover (top) of document">Top</a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_toc.html#SEC_Contents" title="Table of contents">Contents</a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_40.html#Index" title="Index">Index</a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_abt.html#SEC_About" title="About (help)"> ? </a>]</td>
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</tr></table>
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<hr>
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<a name="Parent-Part-1"></a>
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<h3 class="subsection">4.3.1 Parent Part</h3>
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<p>Parts can also inherit parameters from previously defined parts using
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the following syntax. In this case specified integer and string values
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override parameter values from the parent part. New memory definitions
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are added to the definitions inherited from the parent. If, however, a
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new memory definition refers to an existing one of the same name for
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that part then, from v7.1, the existing memory definition is extended,
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and components overwritten with new values. Assigning <code>NULL</code>
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removes an inherited SPI instruction format, memory definition, control
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stack, eeprom or flash instruction, e.g., as in <code>memory "efuse" =
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NULL;</code>
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</p>
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<p>Example format for part inheritance:
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</p>
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<div class="smallexample">
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<pre class="smallexample"> part parent <id> # quoted string
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id = <id> ; # quoted string
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<any set of other parameters from the list above>
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;
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</pre></div>
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<hr>
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<p>
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