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| author | Etienne Le Grand <etn@google.com> | 2014-05-29 19:35:48 -0700 |
|---|---|---|
| committer | Etienne Le Grand <etn@google.com> | 2014-05-29 19:35:48 -0700 |
| commit | 426f14df08abeeaa5addbf746d0ce8e81fbba31a (patch) | |
| tree | 9641ac9d492d6f3830d2ffa92e316f85dc48b5ce /include/hardware/sensors.h | |
| parent | 53017efa7b29990c8e9934a0cea27d62d454d055 (diff) | |
| download | hardware_libhardware-426f14df08abeeaa5addbf746d0ce8e81fbba31a.zip hardware_libhardware-426f14df08abeeaa5addbf746d0ce8e81fbba31a.tar.gz hardware_libhardware-426f14df08abeeaa5addbf746d0ce8e81fbba31a.tar.bz2 | |
Rewording of tilt sensor
Change-Id: I7bb0e63c3e1e6850359d7e690bfeea9e8c8fbcbf
Diffstat (limited to 'include/hardware/sensors.h')
| -rw-r--r-- | include/hardware/sensors.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/hardware/sensors.h b/include/hardware/sensors.h index caf0ea0..91aa111 100644 --- a/include/hardware/sensors.h +++ b/include/hardware/sensors.h @@ -522,11 +522,11 @@ enum { * A sensor of this type generates an event each time a tilt event is detected. A tilt event * should be generated if the direction of the 2-seconds window average gravity changed by at least * 35 degrees since the activation or the last trigger of the sensor. - * initial_estimated_gravity = average of accelerometer measurements over the first + * reference_estimated_gravity = average of accelerometer measurements over the first * 1 second after activation or the estimated gravity at the last * trigger. * current_estimated_gravity = average of accelerometer measurements over the last 2 seconds. - * trigger when angle (initial_estimated_gravity, current_estimated_gravity) > 35 degrees + * trigger when angle (reference_estimated_gravity, current_estimated_gravity) > 35 degrees * * Large accelerations without a change in phone orientation should not trigger a tilt event. * For example, a sharp turn or strong acceleration while driving a car should not trigger a tilt |