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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef DEVICE_GENERIC_SENSOR_GENERIC_SENSOR_CONSTS_H_ | |
6 #define DEVICE_GENERIC_SENSOR_GENERIC_SENSOR_CONSTS_H_ | |
7 | |
8 #define _USE_MATH_DEFINES | |
9 #include <math.h> | |
10 | |
11 namespace device { | |
12 | |
13 // Required for conversion from G/s^2 to m/s^2 | |
14 constexpr double kMeanGravity = 9.80665; | |
15 | |
16 // Required for conversion from deg to rad | |
17 constexpr double kRadiansInDegrees = M_PI / 180.0; | |
18 | |
19 // Required for conversion from Gauss to uT. | |
20 constexpr double kMicroteslaInGauss = 100.0; | |
21 | |
22 // Required for conversion from Milligauss to Microtesla. | |
23 constexpr double kMicroteslaInMilligauss = 0.1; | |
24 | |
25 // Default rate for returning value of the ambient light sensor. | |
26 constexpr int kDefaultAmbientLightFrequencyHz = 5; | |
27 | |
28 // Default rate for returning value of the accelerometer sensor. | |
29 constexpr int kDefaultAccelerometerFrequencyHz = 10; | |
30 | |
31 // Default rate for returning value of the gyroscope sensor. | |
32 constexpr int kDefaultGyroscopeFrequencyHz = 10; | |
33 | |
34 // Default rate for returning value of the magnetometer sensor. | |
35 constexpr int kDefaultMagnetometerFrequencyHz = 10; | |
36 | |
37 } // namespace device | |
38 | |
39 #endif // DEVICE_GENERIC_SENSOR_GENERIC_SENSOR_CONSTS_H_ | |
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