Update starting gravity of tilt definition
Change-Id: I9be79fe264b8a751757a2b6840b7ff928679028d
diff --git a/include/hardware/sensors.h b/include/hardware/sensors.h
index 6a3bbae..caf0ea0 100644
--- a/include/hardware/sensors.h
+++ b/include/hardware/sensors.h
@@ -521,9 +521,10 @@
*
* 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 of the sensor.
+ * 35 degrees since the activation or the last trigger of the sensor.
* initial_estimated_gravity = average of accelerometer measurements over the first
- * 1 second after activation.
+ * 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
*