Android
The barometer sensor measures the ambient air pressure. Barometer can be leveraged to detect and predict short team changes in weather, for example drops in pressure indicate rain, while raises indicate good weather ahead.
Public functions
- Barometer.getFrequency( Context context ): returns sampling rate in Hz.
Settings
- Aware_Preferences.STATUS_BAROMETER: true or false to activate or deactivate sensor.
- Aware_Preferences.FREQUENCY_BAROMETER: non-deterministic frequency in microseconds (dependent of the hardware sensor capabilities and resources), e.g., 200000 (normal), 60000 (UI), 20000 (game), 0 (fastest).
- Barometer.ACTION_AWARE_BAROMETER: new data recorded in provider.
- Barometer.EXTRA_DATA: the recorded data, as ContentValues.
- Barometer.ACTION_AWARE_BAROMETER_LABEL: assign label to the recorded data.
- Barometer.EXTRA_LABEL: the desired label.
Barometer Sensor
Contains the hardware sensor capabilities in the mobile device.
Barometer_Sensor.CONTENT_URI
content://com.aware.provider.barometer/sensor_barometer
| Table field | Field type | Description |
|---|---|---|
| _id | INTEGER | primary key, auto incremented |
| timestamp | REAL | unixtime milliseconds since 1970 |
| device_id | TEXT | AWARE device UUID |
| double_sensor_maximum_range | REAL | Maximum sensor value possible |
| double_sensor_minimum_delay | REAL | Minimum sampling delay in microseconds |
| sensor_name | TEXT | Sensor’s name |
| double_sensor_power_ma | REAL | Sensor’s power drain in mA |
| double_sensor_resolution | REAL | Sensor’s resolution in sensor’s units |
| sensor_type | TEXT | Sensor’s type |
| sensor_vendor | TEXT | Sensor’s manufacturer |
| sensor_version | TEXT | Sensor’s version number |
Barometer Data
Contains the raw sensor data.
Barometer_Data.CONTENT_URI
content://com.aware.provider.barometer/barometer
| Table field | Field type | Description |
|---|---|---|
| _id | INTEGER | primary key, auto incremented |
| timestamp | REAL | unixtime milliseconds since 1970 |
| device_id | TEXT | AWARE device UUID |
| double_values_0 | REAL | the ambient air pressure in mbar/hPa units (depends on hardware) |
| accuracy | INTEGER | Sensor’s accuracy level (see SensorManager) |
| label | TEXT | Customizable label. Useful for data calibration or traceability |
iOS
The barometer sensor measures the ambient air pressure same as Android. Barometer can be leveraged to detect and predict short-term changes in weather, for example, drops in pressure indicate rain, while raises indicate good weather ahead.
CMAltimeter Class in CoreMotion Framework provides the air-pressure data on iOS.
- Barometer.ACTION_AWARE_BAROMETER: new data recorded in provider.
- Barometer.EXTRA_DATA: the recorded data, as ContentValues.
Barometer Data
| Table field | Field type | Description |
|---|---|---|
| _id | INTEGER | primary key, auto incremented |
| timestamp | REAL | unixtime milliseconds since 1970 |
| device_id | TEXT | AWARE device UUID |
| double_values_0 | REAL | the ambient air pressure in mbar/hPa units (depends on hardware) |
| accuracy | INTEGER | This column is not supported on iOS |
| label | TEXT | Customizable label. Useful for data calibration or traceability |