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org.symbian.tools.wrttools.doc.WebDeveloper/html/GUID-FEB5D463-F6A1-44D9-9456-D95DE4BAED77.html
author Eugene Ostroukhov <eugeneo@symbian.org>
Thu, 06 May 2010 16:09:48 -0700
changeset 324 4dfb69657b1d
parent 229 716254ccbcc0
permissions -rw-r--r--
PhoneGap content assist proposals


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<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/><meta name="copyright" content="(C) Copyright 2009"/><meta name="DC.rights.owner" content="(C) Copyright 2009"/><meta name="DC.Type" content="mobileconcept"/><meta name="DC.Title" content="Sensor channel information"/><meta name="DC.Relation" scheme="URI" content="GUID-46FAFCDA-BCF3-41CB-B154-C17BBF7CD755"/><meta name="DC.Relation" scheme="URI" content="GUID-C2731B38-6294-419C-B7E2-AFB918F508D4"/><meta name="DC.Relation" scheme="URI" content="GUID-7C69DDA4-16F1-4A8F-BDB2-4CB0015B4E81"/><meta name="DC.Relation" scheme="URI" content="GUID-65AAF569-D347-462B-B59A-9D7CA184AB9C"/><meta name="DC.Relation" scheme="URI" content="GUID-B77C2006-879F-4AC6-B7BF-04B25B563A29"/><meta name="DC.Format" content="XHTML"/><meta name="DC.Identifier" content="GUID-FEB5D463-F6A1-44D9-9456-D95DE4BAED77"/><title>Sensor
channel information </title><script type="text/javascript">
      function initPage() {}
    </script><link href="../PRODUCT_PLUGIN/book.css" rel="stylesheet" type="text/css"/><link href="css/s60/style.css" rel="stylesheet" type="text/css" media="all"/></head><body onload="initPage();"><div class="body"><div class="contentLeft prTxt"><h1 class="pageHeading" id="GUID-FEB5D463-F6A1-44D9-9456-D95DE4BAED77">Sensor
channel information</h1><div>
<p>The Sensor Service API uses objects to represent sensor channels. One
object contains the information for one sensor channel (see the following
table). The Sensor Service API methods use these sensor channel objects as
follows:</p>
<ul>
<li><p><a href="GUID-46DB749E-A388-46B2-BB13-A274385CA97C.html#GUID-46DB749E-A388-46B2-BB13-A274385CA97C"><code>FindSensorChannel</code></a></p>

<p>The <code>ReturnValue</code> property of the result object is
an <span>iterator</span> containing
the requested sensor channel information. Each item (object) in the <span>iterator</span> corresponds
to one sensor channel matching the <a href="GUID-A4538B4D-0D90-43F8-B1FA-72F616937760.html#GUID-A4538B4D-0D90-43F8-B1FA-72F616937760">search
criteria</a> specified for the <code>FindSensorChannel</code> call.</p>

</li>
<li><p><a href="GUID-B4897257-F7BC-4C32-9C6C-A577FDAC5D09.html#GUID-B4897257-F7BC-4C32-9C6C-A577FDAC5D09"><code>RegisterForNotification</code></a></p>

<p>The <code>criteria.ChannelInfoMap</code> property used
for input is a sensor channel object. It specifies the channel from which
the <code>RegisterForNotification</code> call registers to receive
data.</p>

</li>
<li><p><a href="GUID-C2731B38-6294-419C-B7E2-AFB918F508D4.html#GUID-C2731B38-6294-419C-B7E2-AFB918F508D4"><code>GetChannelProperty</code></a></p>

<p>The <code>criteria.ChannelInfoMap</code> property used
for input is a sensor channel object. It specifies the channel of the property
about which the <code>GetChannelProperty</code> call retrieves information.</p>

</li>
</ul>
<div class="tablenoborder"><a name="GUID-80590C17-FB93-41B5-9A88-EFA9B29B6253"><!----></a><table cellpadding="4" cellspacing="0" summary="" id="GUID-80590C17-FB93-41B5-9A88-EFA9B29B6253" frame="border" border="1" rules="all"><caption><strong>Table: </strong>Sensor channel
object properties</caption>

<thead align="left">
<tr class="title "><th class="cellrowborder" valign="top" width="25%" id="d0e65982">
<p>Property</p>
</th><th class="cellrowborder" valign="top" width="25%" id="d0e65987">
<p>Description</p>
</th><th class="cellrowborder" valign="top" width="25%" id="d0e65992">
<p>Type</p>
</th><th class="cellrowborder" valign="top" width="25%" id="d0e65997">
<p>Value</p>
</th></tr>
</thead>
<tbody>
<tr class="">
<td class="cellrowborder" valign="top" width="25%" headers="d0e65982 ">
<p><code>ChannelId</code></p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65987 ">
<p>Specifies the inique identifier of the channel.</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65992 ">
<p>number</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65997 ">&nbsp;</td>
</tr>
<tr class="bg ">
<td class="cellrowborder" valign="top" width="25%" headers="d0e65982 ">
<p><code>ContextType</code></p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65987 ">
<p>Specifies the context in which the channel is available.</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65992 ">
<p>number</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65997 ">
<p>Possible values:</p>
<ul>
<li><p><code>0</code> - Not defined</p></li>
<li><p><code>1</code> - Ambient sensor, for example to measure
pressure</p></li>
<li><p><code>2</code> - Provides information on the device</p>
</li>
<li><p><code>3</code> - Measures user-initiated stimulus</p>
</li>
</ul>
</td>
</tr>
<tr class="">
<td class="cellrowborder" valign="top" width="25%" headers="d0e65982 ">
<p><code>Quantity</code></p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65987 ">
<p>Specifies the quantity being sensed.</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65992 ">
<p>number</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65997 ">
<p>Possible values:</p>
<ul>
<li><p><code>0</code> - Not defined</p></li>
<li><p><code>10</code> - Acceleration</p></li>
<li><p><code>11</code> - Tapping</p></li>
<li><p><code>12</code> - Orientation</p></li>
<li><p><code>13</code> - Rotation</p></li>
<li><p><code>14</code> - Magnetic</p></li>
<li><p><code>15</code> - Tilt</p></li>
</ul>
</td>
</tr>
<tr class="bg ">
<td class="cellrowborder" valign="top" width="25%" headers="d0e65982 ">
<p><code>ChannelType</code></p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65987 ">
<p>Specifies the type of the channel. This is the unique identifier of
the Sensor Subsystem (SSY) that provides data for this channel.</p>
<p>Each physical sensor registers to the S60 sensor framework as a Sensor
Subsystem that provides specific sensor data. If the physical sensor provides
multiple types of data, it can register a separate SSY for each type. For
example, a sensor that provides both orientation and rotation data can register
one SSY for orientation data and another for rotation data. <code>ChannelType</code> thus
identifies a particular SSY representing the channel.</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65992 ">
<p>number</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65997 ">&nbsp;</td>
</tr>
<tr class="">
<td class="cellrowborder" valign="top" width="25%" headers="d0e65982 ">
<p><code>Location</code></p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65987 ">
<p>Specifies the location of the sensor related to the channel.</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65992 ">
<p>string</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65997 ">&nbsp;</td>
</tr>
<tr class="bg ">
<td class="cellrowborder" valign="top" width="25%" headers="d0e65982 ">
<p><code>VendorId</code></p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65987 ">
<p>Specifies the vendor ID of the sensor related to the channel.</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65992 ">
<p>string</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65997 ">&nbsp;</td>
</tr>
<tr class="">
<td class="cellrowborder" valign="top" width="25%" headers="d0e65982 ">
<p><code>DataItemSize</code></p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65987 ">
<p>Specifies the data item size delivered in the channel.</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65992 ">
<p>number</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65997 ">&nbsp;</td>
</tr>
<tr class="bg ">
<td class="cellrowborder" valign="top" width="25%" headers="d0e65982 ">
<p><code>ChannelDataTypeId</code></p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65987 ">
<p>Specifies the unique data type identifier for the data being sensed.</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65992 ">
<p>number</p>
</td>
<td class="cellrowborder" valign="top" width="25%" headers="d0e65997 ">&nbsp;</td>
</tr>
</tbody>
</table></div></div></div></div><div class="footer"><hr/><div class="copy">© Nokia 2009.</div></div></body></html>
FCL/sftools/dev/eclipseenv/wrttools