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<a name="1205069"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">10.11 Clearing pending interrupts</font>
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<a name="1205070"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The following functions can be used to prevent a raised interrupt signal from causing an interrupt event to occur:</font>
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<a name="1205073"> </a><font size=2 face=Courier><strong>#include "interrupt.h"<br>int<font face="Verdana, Arial, Helvetica, sans-serif"><b> </b></font>interrupt_clear (int <font size=2 face=Courier><strong><em>level</em></strong></font>);<br>int interrupt_clear_number (int <font size=2 face=Courier><strong><em>Number</em></strong></font>);<br></strong></font>
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<a name="1205074"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The first function clears the specified pending interrupt level and should be used when peripherals are attached directly to the interrupt controller. The second function clears the specified interrupt number and is for use when an interrupt level controller is present. If the specified number is the only pending interrupt number attached to the interrupt level then the pending interrupt level is also cleared.</font>
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<a name="1205075"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">On ILC-1, only interrupts asserted in software by <font size=2 face=Courier><strong>interrupt_raise_number</strong></font> can be cleared in this way.</font>
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