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<h2>
<a name="1207243"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">interrupt_unlock</font>
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<p>
<a name="1207244"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Unlock all interrupts</font>
</p>
<h3>
<a name="1207245"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Synopsis</font>
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<a name="1207246"> </a><font size=2 face=Courier><strong>#include <interrup.h><br></strong></font>
<a name="1271145"> </a><font size=2 face=Courier><strong>void interrupt_unlock( void );<br></strong></font>
<h3>
<a name="1207247"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Arguments</font>
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<a name="1207248"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">None</font>
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<a name="1207250"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Results</font>
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<p>
<a name="1207251"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">None</font>
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<h3>
<a name="1207252"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Errors</font>
</h3>
<p>
<a name="1207253"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">None</font>
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<h3>
<a name="1207254"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Description</font>
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<p>
<a name="1207255"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This function re-enables all interrupts to the CPU. Any interrupts which have been prevented from executing start immediately.</font>
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<p>
<a name="1207256"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This function should always be called as a pair with <font size=2 face=Courier><strong>interrupt_lock()</strong></font>, so that it can be used to create a critical region in which the task cannot be preempted by another task or interrupt. As calls to <font size=2 face=Courier><strong>interrupt_lock()</strong></font> can be nested, the lock is not released until an equal number of calls to <font size=2 face=Courier><strong>interrupt_unlock()</strong></font> have been made.</font>
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<h3>
<a name="1207257"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Applies to</font>
</h3>
<p>
<a name="1207258"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">ILC-None, ILC-1, ILC-2, ILC-3</font>
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<h3>
<a name="1207259"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Callable from</font>
</h3>
<p>
<a name="1207260"> </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="1207261"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">See also</font>
</h3>
<p>
<a name="1207262"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><a href="libs46.htm#1206908"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>interrupt_lock</i></font></a>, <a href="libs123.htm#1209326"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>task_lock</i></font></a></font>
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<font size=1 face="Verdana, Arial, Helvetica, sans-serif"> © 2001, 2002, 2003 STMicroelectronics. All Rights Reserved.<br>
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