7 Nokia Corporation - initial contribution. |
7 Nokia Corporation - initial contribution. |
8 Contributors: |
8 Contributors: |
9 --> |
9 --> |
10 <!DOCTYPE concept |
10 <!DOCTYPE concept |
11 PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"> |
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 interrupt |
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 priorities.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody> |
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 used to |
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 implement adjustable interrupt priorities. </p> |
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 |
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 ID</xref> to identify the interrupt source, and a <xref href="GUID-7A2A43EC-6125-3BFE-834B-23C37F7B40D5.dita"><apiname>TInt</apiname></xref> value |
17 the priority value is hardware and implementation dependent and is |
18 specifying the priority value. The meaning of the priority value is hardware |
18 defined by the port. </p> |
19 and implementation dependent and is defined by the port. </p> |
|
20 <p>At its simplest, the function could be used to decide whether interrupts |
19 <p>At its simplest, the function could be used to decide whether interrupts |
21 generate an IRQ or FIQ at the ARM. For hardware such as OMAP that supports |
20 generate an IRQ or FIQ at the ARM. For hardware that supports interrupt |
22 interrupt priority in hardware, priorities can be modified through this function. |
21 priority in hardware, priorities can be modified through this function. |
23 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 |
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> |
24 just return <xref href="GUID-F89DA3F0-2A48-3F9B-8F08-29350E92D0E4.dita"><apiname>KErrNotSupported</apiname></xref>. </p> |
|
25 </conbody></concept> |
23 </conbody></concept> |