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<h2>
<a name="1205922"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">cache_status</font>
</h2><hr>
<p>
<a name="1205923"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Report the cache status</font>
</p>
<h3>
<a name="1205924"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Synopsis</font>
</h3>
<a name="1205925"> </a><font size=2 face=Courier><strong>#include <cache.h><br></strong></font>
<a name="1271004"> </a><font size=2 face=Courier><strong>cache_status_t cache_status( void );<br></strong></font>
<h3>
<a name="1205927"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Arguments</font>
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<p>
<a name="1205928"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">None</font>
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<h3>
<a name="1205930"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Results</font>
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<p>
<a name="1205931"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">A structure describing the status of the cache.</font>
</p>
<h3>
<a name="1205932"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Errors</font>
</h3>
<p>
<a name="1205933"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">None</font>
</p>
<h3>
<a name="1205934"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Description</font>
</h3>
<p>
<a name="1205976"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This function returns a structure describing the current status of the cache.
<br><br>
<table border="1" cellpadding="5" cellspacing="0">
<caption><b><i><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205973"> </a><font face="Helvetica">Table 45: Cache status structure</font></font></i></b></caption>
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<th><font face="Verdana, Arial, Helvetica, sans-serif" color="#003366"><a name="1205937"> </a><font face="Verdana, Arial, Helvetica, sans-serif">Field name</font></font></th>
<th><font face="Verdana, Arial, Helvetica, sans-serif" color="#003366"><a name="1205939"> </a><font face="Verdana, Arial, Helvetica, sans-serif">Meaning</font></font></th>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205941"> </a><div ><font size=2>EnableDCache</font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205943"> </a><div ><font size=2><font size=2 face=Courier><strong>1</strong></font> if the data cache is enabled, <font size=2 face=Courier><strong>0</strong></font> otherwise</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205945"> </a><div ><font size=2>EnableICache</font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205947"> </a><div ><font size=2><font size=2 face=Courier><strong>1</strong></font> if the instruction cache is enabled, <font size=2 face=Courier><strong>0</strong></font> otherwise</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205949"> </a><div ><font size=2>InvalidatingDCache</font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205951"> </a><div ><font size=2><font size=2 face=Courier><strong>1</strong></font> if the cache controller is invalidating the data cache, <font size=2 face=Courier><strong>0</strong></font> otherwise</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205953"> </a><div ><font size=2>InvalidatingICache</font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205955"> </a><div ><font size=2><font size=2 face=Courier><strong>1</strong></font> if the cache controller is invalidating the instruction cache, <font size=2 face=Courier><strong>0</strong></font> otherwise</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205957"> </a><div ><font size=2>FlushingDCache</font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205959"> </a><div ><font size=2><font size=2 face=Courier><strong>1</strong></font> if the cache controller is flushing the data cache, <font size=2 face=Courier><strong>0</strong></font> otherwise</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205961"> </a><div ><font size=2>DCacheReady</font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205963"> </a><div ><font size=2><font size=2 face=Courier><strong>1</strong></font> if the data cache is ready to perform an operation, <font size=2 face=Courier><strong>0</strong></font> otherwise</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205965"> </a><div ><font size=2>ICacheReady</font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205967"> </a><div ><font size=2><font size=2 face=Courier><strong>1</strong></font> if the instruction cache is ready to perform an operation, <font size=2 face=Courier><strong>0</strong></font> otherwise</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205969"> </a><div ><font size=2>CacheControlLock</font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1205971"> </a><div ><font size=2><font size=2 face=Courier><strong>1</strong></font> if the cache configuration is locked, <font size=2 face=Courier><strong>0</strong></font> otherwise</font></div></font></td>
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</table>
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</p>
<p>
<a name="1205977"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><em>Note: ST20 variants that use <font size=2 face=Courier><strong>cache_map_sti5500</strong></font> do not have a <span class=Signal>CacheStatus</span> register so OS20 implements it in software. In software it is not possible to implement all of the features of the <span class=Signal>CacheStatus</span> register. Therefore only <span class=Signal>EnableDCache</span>, <span class=Signal>EnableICache</span> and <span class=Signal>CacheControlLock</span> should be used on these processors.</em></font>
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<h3>
<a name="1205978"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Callable from</font>
</h3>
<p>
<a name="1205979"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">A task, interrupt service routine or a high priority process (on an ST20C2).</font>
</p>
<h3>
<a name="1205980"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Example</font>
</h3>
<a name="1205981"> </a><font size=2 face=Courier><strong>cache_status_t status = cache_status();<br>if ( status.CacheControlLock ) {<br>⌨️ 快捷键说明
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