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    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-159BDA2E-123C-52DF-9F8B-E058379EBFB8" xml:lang="en"><title>Interrupt::SetPriority()</title><shortdesc>The interrupt architecture supports the concept of adjustable

    13 interrupt priorities.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 <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

    15 used to implement adjustable interrupt priorities. </p>

    16 <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 ID</xref> to identify the interrupt source, and a <xref href="GUID-7A2A43EC-6125-3BFE-834B-23C37F7B40D5.dita"><apiname>TInt</apiname></xref> value specifying the priority value. The meaning of

    17 the priority value is hardware and implementation dependent and is

    18 defined by the port. </p>

    19 <p>At its simplest, the function could be used to decide whether interrupts

    20 generate an IRQ or FIQ at the ARM. For hardware that supports interrupt

    21 priority in hardware, priorities can be modified through this function.

    22 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 just return <xref href="GUID-F89DA3F0-2A48-3F9B-8F08-29350E92D0E4.dita"><apiname>KErrNotSupported</apiname></xref>. </p>

    23 </conbody></concept>