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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
//------------------------------------------------------------------------------
/// \unit
///
/// This file contains apis and definitions for tilt sensing.
///
//------------------------------------------------------------------------------
#ifndef DV_ACCELEROMETER_H
#define DV_ACCELEROMETER_H
#include "dfm_entry.h"
#define ACC_SHIFT 0 //!< Accelerometer filtering value
#define ACC_ZERO (0x7FF >> ACC_SHIFT) //!< Accelerometer 0 value 0x1000/2
#define ACC_1G (0x223 >> ACC_SHIFT) //!< Accelerometer 1G value 2.09/3.3 * 0x1000 delta 1g
#define ACC_ZERO_X ACC_ZERO
#define ACC_ZERO_Y ACC_ZERO
#define ACC_ZERO_Z ACC_ZERO
#define ACC_AMPLITUDE_UPPER (ACC_1G*ACC_1G*1.01)
#define ACC_AMPLITUDE_LOWER (ACC_1G*ACC_1G*0.99)
#define DV_Accelerometer_Unchanged 0 //!< default unchanged direction
#define DV_Accelerometer_normal_up 1 //!< normal up
#define DV_Accelerometer_up 2 //!< up
#define DV_Accelerometer_down 3 //!< down
#define DV_Accelerometer_left 4 //!< left
#define DV_Accelerometer_right 5 //!< right
#define DV_Accelerometer_up_right 6 //!< up and right
#define DV_Accelerometer_up_left 7 //!< up and left
#define DV_Accelerometer_down_left 8 //!< down and left
#define DV_Accelerometer_down_right 9 //!< down and right
#define DIR_UNCHANGED 0
#define DIR_HORIZIONTAL_UP 1
#define DIR_HORIZIONTAL_DOWN 2
#define DIR_VERTICAL_UP 3
#define DIR_VERTICAL_DOWN 4
typedef struct {
int x;
int y;
int z;
} xyz_t;
typedef struct {
xyz_t m; //!< immediate acceleration
xyz_t k; //!< calibration basis
xyz_t ak; //!< acceleration difference
} acc_t;
extern int gDir;
extern TInputEntry gAccEntry ;
extern unsigned int gLcdRefreshFlag;
extern int DV_ACCELEROMETER_Init(void);
extern void DV_Accelerometer_Turn();
extern int DV_Check_AccStatus();
extern void DV_ACCELEROMETER_Measure(void);
#endif
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