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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_CLOCKWORK_SENSOR_INTERFACE_H
#define ANDROID_CLOCKWORK_SENSOR_INTERFACE_H
#include <hardware/sensors.h>
__BEGIN_DECLS
/*
* SENSOR_TYPE_WRIST_TILT
* trigger-mode: special
* wake-up sensor: yes
*
* A sensor of this type triggers an event each time a tilt of the device
* is detected.
*
* Upon detecting a tilt event, a single event is returned containing the
* value of the 3 accelerometer axes when the tilt event was detected.
*
* All values are in SI units (m/s^2) and measure the acceleration of the
* device minus the force of gravity.
*
* x: Acceleration on the x-axis
* y: Acceleration on the y-axis
* z: Acceleration on the z-axis
*
* Note that the readings from the accelerometer include the acceleration
* due to gravity (which is opposite to the direction of the gravity vector).
*
* See "SENSOR_TYPE_ACCELEROMETER" for more detail on returned accelerometer
* data.
*
* setDelay() has no impact on this sensor type
*
* IMPORTANT NOTE: this sensor type is very different from other types
* in that it must work when the screen is off without the need of
* holding a partial wake-lock and MUST allow the SoC to go into suspend.
* When a tilt event is detected, the sensor must awaken the SoC and
* the event be reported.
*
* When the sensor is not activated, it must also be deactivated in the
* hardware: it must not wake up the SoC anymore, even in case of
* a tilt event.
*/
#define SENSOR_TYPE_WRIST_TILT (SENSOR_TYPE_DEVICE_PRIVATE_BASE)
#define SENSOR_STRING_TYPE_WRIST_TILT "com.google.android_wear.wrist.tilt"
__END_DECLS
#endif /* ANDROID_CLOCKWORK_SENSOR_INTERFACE_H */
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