AK8975_FS/libsensors/sensors.h

/*
 * Copyright (C) 2008 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_SENSORS_H
#define ANDROID_SENSORS_H

#include <stdint.h>
#include <errno.h>
#include <sys/cdefs.h>
#include <sys/types.h>

#include <linux/input.h>

#include <hardware/hardware.h>
#include <hardware/sensors.h>

__BEGIN_DECLS

/*****************************************************************************/

#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))

#define ID_A  (0)
#define ID_M  (1)
#define ID_O  (2)

/*****************************************************************************/

/*
 * The SENSORS Module
 */

/*****************************************************************************/

/* For ADXL346 */
#define EVENT_TYPE_ACCEL_X          ABS_X
#define EVENT_TYPE_ACCEL_Y          ABS_Y
#define EVENT_TYPE_ACCEL_Z          ABS_Z
#define EVENT_TYPE_ACCEL_STATUS     ABS_THROTTLE

/* For AK8975 */
#define EVENT_TYPE_MAGV_X           ABS_RX
#define EVENT_TYPE_MAGV_Y           ABS_RY
#define EVENT_TYPE_MAGV_Z           ABS_RZ
#define EVENT_TYPE_MAGV_STATUS      ABS_RUDDER

/* Fro AKM Algorithm */
#define EVENT_TYPE_YAW              ABS_HAT0X
#define EVENT_TYPE_PITCH            ABS_HAT0Y
#define EVENT_TYPE_ROLL             ABS_HAT1X
#define EVENT_TYPE_ORIENT_STATUS    ABS_HAT1Y


/* conversion of acceleration data to SI units (m/s^2) */
/* 720 LSB = 1G */
#define LSG                         (256.0f)
#define AKSC_LSG					(720.0f)
#define CONVERT_A                   (GRAVITY_EARTH / LSG)

/* conversion of magnetic data to uT units */
#define CONVERT_M                   (0.06f)

/* conversion of orientation data to degree units */
#define CONVERT_O                   (0.015625f)

#define SENSOR_STATE_MASK           (0x7FFF)

/*****************************************************************************/

__END_DECLS

#endif  // ANDROID_SENSORS_H