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/*
$License:
Copyright (C) 2011-2012 InvenSense Corporation, All Rights Reserved.
See included License.txt for License information.
$
*/
#ifndef INV_SHAKE_H__
#define INV_SHAKE_H__
#include "mltypes.h"
#ifdef __cplusplus
extern "C" {
#endif
/* ------------ */
/* - Defines. - */
/* ------------ */
#define STATE_ZERO 0
#define STATE_INIT_1 1
#define STATE_INIT_2 2
#define STATE_DETECT 3
struct t_shake_config_params {
long shake_time_min_ms;
long shake_time_max_ms;
long shake_time_min;
long shake_time_max;
unsigned char shake_time_set;
long shake_time_saved;
float shake_deriv_thr;
int zero_cross_thr;
float accel_delta_min;
float accel_delta_max;
unsigned char interp_enable;
};
struct t_shake_state_params {
unsigned char state;
float accel_peak_high;
float accel_peak_low;
float accel_range;
int num_zero_cross;
short curr_shake_time;
int deriv_major_change;
int deriv_major_sign;
float accel_buffer[200];
float delta_buffer[200];
};
struct t_shake_data_params {
float accel_prev;
float accel_curr;
float delta_prev;
float delta_curr;
float delta_prev_buffer;
};
struct t_shake_results {
//unsigned char shake_int;
int shake_number;
};
struct t_shake_cb {
void (*shake_callback)(struct t_shake_results *shake_results);
};
/* --------------------- */
/* - Function p-types. - */
/* --------------------- */
inv_error_t inv_enable_shake(void);
inv_error_t inv_disable_shake(void);
inv_error_t inv_init_shake(void);
inv_error_t inv_start_shake(void);
int inv_set_shake_cb(void (*callback)(struct t_shake_results *shake_results));
void inv_config_shake_time_params(long sample_time_ms);
void inv_set_shake_accel_delta_min(float accel_g);
void inv_set_shake_accel_delta_max(float accel_g);
void inv_set_shake_zero_cross_thresh(int num_zero_cross);
void inv_set_shake_deriv_thresh(float shake_deriv_thresh);
void inv_set_shake_time_min_ms(long time_ms);
void inv_set_shake_time_max_ms(long time_ms);
void inv_enable_shake_data_interpolation(unsigned char en);
#ifdef __cplusplus
}
#endif
#endif // INV_SHAKE__
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