Sensor +channel information

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:

FindSensorChannel
+ +
The ReturnValue property of the result object is +an iterator containing +the requested sensor channel information. Each item (object) in the iterator corresponds +to one sensor channel matching the search +criteria specified for the FindSensorChannel call.
+ +
RegisterForNotification
+ +
The criteria.ChannelInfoMap property used +for input is a sensor channel object. It specifies the channel from which +the RegisterForNotification call registers to receive +data.
+ +
GetChannelProperty
+ +
The criteria.ChannelInfoMap property used +for input is a sensor channel object. It specifies the channel of the property +about which the GetChannelProperty call retrieves information.
+ +

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**Table:** Sensor channel +object properties
+ Property +	+ Description +	+ Type +	+ Value +
+ `ChannelId` +	+ Specifies the inique identifier of the channel. +	+ number +
+ `ContextType` +	+ Specifies the context in which the channel is available. +	+ number +	+ Possible values: + + `0` - Not defined + `1` - Ambient sensor, for example to measure +pressure + `2` - Provides information on the device + + `3` - Measures user-initiated stimulus + + +
+ `Quantity` +	+ Specifies the quantity being sensed. +	+ number +	+ Possible values: + + `0` - Not defined + `10` - Acceleration + `11` - Tapping + `12` - Orientation + `13` - Rotation + `14` - Magnetic + `15` - Tilt + +
+ `ChannelType` +	+ Specifies the type of the channel. This is the unique identifier of +the Sensor Subsystem (SSY) that provides data for this channel. + 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. `ChannelType` thus +identifies a particular SSY representing the channel. +	+ number +
+ `Location` +	+ Specifies the location of the sensor related to the channel. +	+ string +
+ `VendorId` +	+ Specifies the vendor ID of the sensor related to the channel. +	+ string +
+ `DataItemSize` +	+ Specifies the data item size delivered in the channel. +	+ number +
+ `ChannelDataTypeId` +	+ Specifies the unique data type identifier for the data being sensed. +	+ number +