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Symbian3/PDK/Source/GUID-159BDA2E-123C-52DF-9F8B-E058379EBFB8.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Fri, 22 Jan 2010 18:26:19 +0000
changeset 1 25a17d01db0c
child 3 46218c8b8afa
permissions -rw-r--r--
Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License
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"Eclipse Public License v1.0" which accompanies this distribution,
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors:
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-->
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="GUID-159BDA2E-123C-52DF-9F8B-E058379EBFB8" xml:lang="en"><title>Interrupt::SetPriority()</title><shortdesc>The interrupt architecture supports the concept of adjustable interrupt
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priorities.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>The <xref href="GUID-E7A7083C-97B9-39B9-A147-4A6E314EE3A3.dita#GUID-E7A7083C-97B9-39B9-A147-4A6E314EE3A3/GUID-FA4CFED7-D694-399C-8F84-FA9FE3C3A171"><apiname>Interrupt::SetPriority()</apiname></xref> function can be used to
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implement adjustable interrupt priorities. </p>
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<p>The function takes the <xref href="GUID-76A30EC4-4B99-5471-9E80-F853C91485BC.dita#GUID-76A30EC4-4B99-5471-9E80-F853C91485BC/GUID-8E58F4C9-0290-55E0-A4FD-B6C2361BE205">Interrupt
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ID</xref> to identify the interrupt source, and a <xref href="GUID-7A2A43EC-6125-3BFE-834B-23C37F7B40D5.dita"><apiname>TInt</apiname></xref> value
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specifying the priority value. The meaning of the priority value is hardware
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and implementation dependent and is defined by the port. </p>
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<p>At its simplest, the function could be used to decide whether interrupts
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generate an IRQ or FIQ at the ARM. For hardware such as OMAP that supports
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interrupt priority in hardware, priorities can be modified through this function.
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If priority adjustment is not supported, or will not be implemented, <xref href="GUID-E7A7083C-97B9-39B9-A147-4A6E314EE3A3.dita#GUID-E7A7083C-97B9-39B9-A147-4A6E314EE3A3/GUID-FA4CFED7-D694-399C-8F84-FA9FE3C3A171"><apiname>Interrupt::SetPriority()</apiname></xref> should
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just return <xref href="GUID-F89DA3F0-2A48-3F9B-8F08-29350E92D0E4.dita"><apiname>KErrNotSupported</apiname></xref>. </p>
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</conbody></concept>
FCL/sftools/depl/docscontent