Commit Graph

3 Commits

Author SHA1 Message Date
Mathias Agopian
984826cc15 9-axis sensor fusion with Kalman filter
Add support for 9-axis gravity and linear-acceleration sensors
virtual orientation sensor using 9-axis fusion

Change-Id: I6717539373fce781c10e97b6fa59f68a831a592f
2012-06-27 17:07:54 -07:00
Mathias Agopian
50b66767f6 fix [3237242] sensormanager sensor active count gets out of sync
whether a physical sensor needed to be active or not was managed by
a simpe reference counter; unfortunatelly nothing prevented it to
get out of sync if a sensor was disabled more than once.

sensorservice already maintainted a list of all the "clients"
connected to a physical sensor; we now use that list to determine if
a sensor should be enabled. This can never be "out-of-sync" since
this is the only data structure linking a sensor to a user of that
sensor.

also removed the isEnabled() method, which was never used and
implemented wrongly (since it didn't take into account that a sensor
could be disabled for a client but not of another).

Change-Id: I789affb877728ca957e99f7ba749def37c4db1c7
2012-06-27 17:07:54 -07:00
Mathias Agopian
f001c92436 Add support for virtual sensors.
Rework sensorservice to allow "virtual sensors", that is
sensors that report a synthetized value based on real sensors.

the main change to sensorservice is around managing which real
sensor need to be activated and which rate to use.

The logic for all this has been moved into SensorDevice, which
essentially wraps the sensor HAL but adds two features to it:
- it keeps track of which sensors need to be activated
- it keeps track of what rate needs to be used

For this purpose an "identity" is associated with each real sensor
activation, so we can track them.

On start-up we check for gravity, linear-acceleration and
rotation-vector sensors, if they're not present in the HAL, we
synthetize them in sensor-service.

Change-Id: I841db2c1b37ef127ed571efa21732ecc5adf1800
2012-06-27 17:07:54 -07:00