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/******************************************************************************
*
* Copyright (C) 2012 Asahi Kasei Microdevices Corporation, Japan
*
* 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 AKMD_INC_AK8975DRIVER_H
#define AKMD_INC_AK8975DRIVER_H
#include <linux/akm8975.h> /* Device driver */
#include <stdint.h> /* int8_t, int16_t etc. */
/*** Constant definition ******************************************************/
#define AKD_TRUE 1 /*!< Represents true */
#define AKD_FALSE 0 /*!< Represents false */
#define AKD_SUCCESS 1 /*!< Represents success.*/
#define AKD_FAIL 0 /*!< Represents fail. */
#define AKD_ERROR -1 /*!< Represents error. */
/*! 0:Don't Output data, 1:Output data */
#define AKD_DBG_DATA 0
/*! Typical interval in ns */
#define AK8975_MEASUREMENT_TIME_NS ((AK8975_MEASUREMENT_TIME_US) * 1000)
/*! 720 LSG = 1G = 9.8 m/s2 */
#define LSG 720
/*** Type declaration *********************************************************/
typedef unsigned char BYTE;
/*!
Open device driver.
This function opens device driver of acceleration sensor.
@return If this function succeeds, the return value is #AKD_SUCCESS. Otherwise
the return value is #AKD_FAIL.
*/
typedef int16_t(*ACCFNC_INITDEVICE)(void);
/*!
Close device driver.
This function closes device drivers of acceleration sensor.
*/
typedef void(*ACCFNC_DEINITDEVICE)(void);
/*!
Acquire acceleration data from acceleration sensor and convert it to Android
coordinate system.
@return If this function succeeds, the return value is #AKD_SUCCESS. Otherwise
the return value is #AKD_FAIL.
@param[out] data A acceleration data array. The coordinate system of the
acquired data follows the definition of Android. Unit is SmartCompass.
*/
typedef int16_t(*ACCFNC_GETACCDATA)(short data[3]);
/*** Global variables *********************************************************/
/*** Prototype of Function ***************************************************/
int16_t AKD_InitDevice(void);
void AKD_DeinitDevice(void);
int16_t AKD_TxData(
const BYTE address,
const BYTE* data,
const uint16_t numberOfBytesToWrite);
int16_t AKD_RxData(
const BYTE address,
BYTE* data,
const uint16_t numberOfBytesToRead);
int16_t AKD_GetMagneticData(BYTE data[SENSOR_DATA_SIZE]);
void AKD_SetYPR(const int buf[YPR_DATA_SIZE]);
int AKD_GetOpenStatus(int* status);
int AKD_GetCloseStatus(int* status);
int16_t AKD_SetMode(const BYTE mode);
int16_t AKD_GetDelay(int64_t delay[AKM_NUM_SENSORS]);
int16_t AKD_GetLayout(int16_t* layout);
int16_t AKD_GetAccelerationData(int16_t data[3]);
#endif /* AKMD_INC_AK8975DRIVER_H */
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