Classes and interfaces

ChannelInfo

The implementation defines the following data properties for sensor channels:

**Table:** Channel data properties
Sensor	Accuracy	Data type	Unit	Channel names
Accelerometer (raw values)	0.1	TYPE_INT	raw	axis_x axis_y axis_z
Accelerometer (SI values)	0.1	TYPE_DOUBLE	m/s^2	axis_x axis_y axis_z
Battery charge level	0	TYPE_INT	%	battery_charge
Charger state	0	TYPE_INT	boolean	charger_state
Double tap	0	TYPE_INT	int	double_tap
Network field intensity	0	TYPE_INT	%	network_field_intensity
Orientation	0	TYPE_INT	unit	orientation

The implementation defines the following measurement ranges for sensor channels:

Note:

The values are specific to sensor device driver.

**Table:** Channel measurement ranges
Sensor	Channels	Largest value	Smallest value	Resolution
Accelerometer (raw values)	axis_x axis_y axis_z	127	-128	1
Accelerometer (SI values)	axis_x axis_y axis_z	19.6133	-19.6133	0.15322890625
Battery charge level	battery_charge	100	0	1
Charger state	charger_state	1	0	1
Network field intensity	network_field_intensity	100	0	1
Orientation	orientation	6	0	1

The double tap sensor supports only the following 3 return values:

**Table:** Double tap sensor return values
SENSOR_SAPI_TAP_LEFT_RIGHT	3
SENSOR_SAPI_TAP_TOP_BOTTOM	12
SENSOR_SAPI_TAP_FRONT_BACK	48

For more information about double tap sensor and receiving values from it, see How to receive input from the double tap sensor in the context of a game with Java ME.

For more information about the supported sensor channels, see Appendix E of the Mobile Sensor API specification.

SensorConnection

The implementation supports the following parameters for Connector.open for opening a SensorConnection :

**Table:** SensorConnection parameters
Function	<quantity>	<contextType>	<model>	<location>
Accelerometer (raw values)	acceleration	user	Nokia2	NoLoc
Accelerometer (SI values)	acceleration	user	Nokia	NoLoc
Battery charge level	battery_charge	device	Nokia	device
Charger state	charger_state	device	Nokia	device
Double tap	double_tap	device	Nokia	device
Network field intensity	network_field_intensity	device	Nokia	device
Orientation	orientation	device	Nokia	device

For a description of the terms, see section Finding and identifying sensors.

You can also retrieve the above values during runtime by calling SensorManager.findSensors(null, null) .

SensorInfo

The implementation defines the following sensor properties:

**Table:** SensorInfo properties
Property	Type	Value
PROP_LOCATION	string	See <location> in table SensorConnection parameters in Series 40.
PROP_MAX_RATE	string	Maximum sampling rate (in Hz) supported by the sensor on the device. Note: The orientation and double tap sensors do not support this property as neither uses a sampling rate.
PROP_VENDOR	string	Nokia
PROP_VERSION	string	Supported API version on the device, for example 1.2.

Sensors are always available, push MIDlets are not supported, and the maximum buffer size is 256. This results in the following return values for SensorInfo methods:

**Table:** SensorInfo query methods
Method	Type	Value
getMaxBufferSize	int	256
isAvailable	boolean	true
isAvailabilityPushSupported	boolean	false
isConditionPushSupported	boolean	false