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<div class="title">MISRA-C:2004 Compliance Exceptions </div> </div>
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<div class="textblock"><p>CMSIS-CORE uses the common coding rules for CMSIS components that are documented under <a href="../../General/html/index.html"><b>Introduction</b></a>.</p>
<p>CMSIS-CORE violates the following MISRA-C:2004 rules:</p>
<ul>
<li>Required Rule 8.5, object/function definition in header file.<br/>
Violated since function definitions in header files are used for function inlining'.</li>
</ul>
<ul>
<li>Advisory Rule 12.4, Side effects on right hand side of logical operator.<br/>
Violated because volatile is used for core register definitions.</li>
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<li>Advisory Rule 14.7, Return statement before end of function.<br/>
Violated to simplify code logic.</li>
</ul>
<ul>
<li>Required Rule 18.4, declaration of union type or object of union type: '{...}'.<br/>
Violated since unions are used for effective representation of core registers.</li>
</ul>
<ul>
<li>Advisory Rule 19.4, Disallowed definition for macro.<br/>
Violated since macros are used for assembler keywords.</li>
</ul>
<ul>
<li>Advisory Rule 19.7, Function-like macro defined.<br/>
Violated since function-like macros are used to generate more efficient code.</li>
</ul>
<ul>
<li>Advisory Rule 19.16, all preprocessing directives must be valid.<br/>
Violated to set default settings for macros.</li>
</ul>
<p><device>.h files generated by <b>SVDConv.exe</b> violate the following MISRA-C:2004 rules:</p>
<ul>
<li>Advisory Rule 20.2, Re-use of C90 identifier pattern.<br/>
Violated since CMSIS macros begin with '__'. Since CMSIS is developed and verified with various compilers this approach is acceptable and avoids conflicts with user symbols.</li>
</ul>
<ul>
<li>Advisory Rule 19.1, Declaration before #include.<br/>
Violated since Interrupt Number Definition Type (IRQn_Type) must be defined before including the core header file. </li>
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