device/generic_sensor/generic_sensor_consts.h

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef DEVICE_GENERIC_SENSOR_GENERIC_SENSOR_CONSTS_H_
#define DEVICE_GENERIC_SENSOR_GENERIC_SENSOR_CONSTS_H_

#define _USE_MATH_DEFINES
#include <math.h>

namespace device {

// Required for conversion from G/s^2 to m/s^2
constexpr double kMeanGravity = 9.80665;

// Required for conversion from deg to rad
constexpr double kRadiansInDegrees = M_PI / 180.0;

// Required for conversion from Gauss to uT.
constexpr double kMicroteslaInGauss = 100.0;

// Required for conversion from Milligauss to Microtesla.
constexpr double kMicroteslaInMilligauss = 0.1;

// Default rate for returning value of the ambient light sensor.
constexpr int kDefaultAmbientLightFrequencyHz = 5;

// Default rate for returning value of the accelerometer sensor.
constexpr int kDefaultAccelerometerFrequencyHz = 10;

// Default rate for returning value of the gyroscope sensor.
constexpr int kDefaultGyroscopeFrequencyHz = 10;

// Default rate for returning value of the magnetometer sensor.
constexpr int kDefaultMagnetometerFrequencyHz = 10;

}  // namespace device

#endif  // DEVICE_GENERIC_SENSOR_GENERIC_SENSOR_CONSTS_H_