Sensor
The Sensor
interface of the Sensor APIs is the base class for all the other sensor interfaces. This interface cannot be used directly. Instead it provides properties, event handlers, and methods accessed by interfaces that inherit from it.
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When initially created, the Sensor
object is idle, meaning it does not take measures. Once the start()
method is called, it prepares itself to read data and, once ready, the activate
event is sent and the sensor becomes activated. It then sends a reading
event each time new data is available.
In case of an error, the error
event is sent, reading stops, and the Sensor
object becomes idle again. The start()
method needs to be called again before it can read further data.
Interfaces based on Sensor
Below is a list of interfaces based on the Sensor
interface.
Instance properties
Sensor.activated
Read only-
Returns a boolean value indicating whether the sensor is active.
Sensor.hasReading
Read only-
Returns a boolean value indicating whether the sensor has a reading.
Sensor.timestamp
Read only-
Returns the timestamp of the latest sensor reading.
Instance methods
Sensor.start()
-
Activates one of the sensors based on
Sensor
. Sensor.stop()
-
Deactivates one of the sensors based on
Sensor
.
Events
Specifications
Specification |
---|
Generic Sensor API # the-sensor-interface |
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