<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->

<!-- This component and the accompanying materials are made available under the terms of the License 

"Eclipse Public License v1.0" which accompanies this distribution, 

and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->

<!-- Initial Contributors:

    Nokia Corporation - initial contribution.

Contributors: 

-->

<!DOCTYPE task

  PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">

<task id="GUID-0CA7F22E-59D7-4D65-9D6C-735E4E0F0454" xml:lang="en"><title>Setting

Channel Properties</title><shortdesc>The channel properties can be configured using the <codeph>CSensrvChannel::SetProperty()</codeph> function.</shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody>

<prereq id="GUID-578E2FA5-5265-4AF7-88EC-9BA5C143DDF7">       <p>Before setting

channel properties, you must <xref href="GUID-4B709839-8EEF-4AD2-9868-9AF0176B1E5B.dita#GUID-4B709839-8EEF-4AD2-9868-9AF0176B1E5B/GUID-FBBD3A8B-F240-4DC0-B516-3A51FDD86A88">open

the sensor channel</xref>.</p>     </prereq>

<steps id="GUID-4DD07DEC-6017-4237-BE46-1D69E5FBD744-GENID-1-10-1-9-1-1-6-1-4-1-4-1-7-1-3-2">

<step id="GUID-9A69E5AD-E938-4092-A8C2-CB65C37C8962-GENID-1-10-1-9-1-1-6-1-4-1-4-1-7-1-3-2-1"><cmd>Create a <parmname>TSensrvProperty</parmname> property

object for setting the <parmname>KSensrvPropIdDataRate</parmname> property

using the <parmname>TSensrvProperty(const TSensrvPropertyId,const TInt,const

TInt)</parmname> constructor.</cmd>

<stepxmp><codeblock xml:space="preserve">...

TInt val=2;

TSensrvProperty sensrvProperty(KSensrvPropIdDataRate,KSensrvItemIndexNone,val);

...</codeblock></stepxmp>

</step>

<step id="GUID-3AC7711D-8CBB-427A-BEA1-800539AC1377"><cmd>Set the <parmname>KSensrvPropIdDataRate</parmname> property

value by passing the property object that you created to <xref href="GUID-22DC917F-D833-3531-AB2D-A6E2D52EF844.dita#GUID-22DC917F-D833-3531-AB2D-A6E2D52EF844/GUID-B69100DD-522F-3B5A-AC65-DE1950A673F0"><apiname>CSensrvChannel::SetProperty()</apiname></xref>.</cmd>

<stepxmp><codeblock xml:space="preserve">...

CSensrvChannel* channel;

...

TInt ret;

ret=channel->SetProperty(sensrvProperty);

...</codeblock></stepxmp>

</step>

</steps>

<example><p>The following example explains how to set the x-axis of accelerometer

channel status from activated to deactivated. </p><p>The axis active property <parmname>KSensrvPropIdAxisActive</parmname> is

first retrieved using the <xref href="GUID-22DC917F-D833-3531-AB2D-A6E2D52EF844.dita#GUID-22DC917F-D833-3531-AB2D-A6E2D52EF844/GUID-1E9D960B-23C4-30DF-A184-7E978AC9AC1B"><apiname>CSensrvChannel::GetPropertyL()</apiname></xref> function.

If the axis is active, the new <b>deactivated</b> value is set in the retrieved

property object. Then the channel is updated with this updated property object

by using the <xref href="GUID-22DC917F-D833-3531-AB2D-A6E2D52EF844.dita#GUID-22DC917F-D833-3531-AB2D-A6E2D52EF844/GUID-B69100DD-522F-3B5A-AC65-DE1950A673F0"><apiname>CSensrvChannel::SetProperty()</apiname></xref> function.</p><codeblock xml:space="preserve">TSensrvProperty property;

    TInt err( KErrNone );

    TInt axisActive( 0 );

    iSensorChannel->GetPropertyL( KSensrvPropIdAxisActive,

                                  TSensrvAccelerometerAxisData::Index::iAxisX,

                                  property );

    property.GetValue( axisActive );

    if( 1 == axisActive )

        {

        property.SetValue( 0 ); // A value other than 1 means that sensor axis is deactivated.

        err = iSensorChannel->SetProperty( property );

        if( KErrNone == err )

            {

            //Accelerometer x-axis was successfully deactivated

            }

       }

    else

        {

        //Accelerometer x-axis is already inactive

        }</codeblock></example>

<postreq id="GUID-5155648B-6A69-4BF4-A5C2-83A8611F2B22"><p>End the session

with the sensor channel using the <xref href="GUID-22DC917F-D833-3531-AB2D-A6E2D52EF844.dita#GUID-22DC917F-D833-3531-AB2D-A6E2D52EF844/GUID-0B8F50A6-2CA1-316A-82AB-AA026005E810"><apiname>CSensrvChannel::CloseChannel()</apiname></xref> function.</p></postreq>