1 /* 2 $License: 3 Copyright (C) 2011-2012 InvenSense Corporation, All Rights Reserved. 4 See included License.txt for License information. 5 $ 6 */ 7 #ifndef INV_SHAKE_H__ 8 #define INV_SHAKE_H__ 9 10 #include "mltypes.h" 11 12 13 #ifdef __cplusplus 14 extern "C" { 15 #endif 16 17 /* ------------ */ 18 /* - Defines. - */ 19 /* ------------ */ 20 21 #define STATE_ZERO 0 22 #define STATE_INIT_1 1 23 #define STATE_INIT_2 2 24 #define STATE_DETECT 3 25 26 struct t_shake_config_params { 27 long shake_time_min_ms; 28 long shake_time_max_ms; 29 long shake_time_min; 30 long shake_time_max; 31 unsigned char shake_time_set; 32 long shake_time_saved; 33 float shake_deriv_thr; 34 int zero_cross_thr; 35 float accel_delta_min; 36 float accel_delta_max; 37 unsigned char interp_enable; 38 }; 39 40 struct t_shake_state_params { 41 unsigned char state; 42 float accel_peak_high; 43 float accel_peak_low; 44 float accel_range; 45 int num_zero_cross; 46 short curr_shake_time; 47 int deriv_major_change; 48 int deriv_major_sign; 49 float accel_buffer[200]; 50 float delta_buffer[200]; 51 }; 52 53 struct t_shake_data_params { 54 float accel_prev; 55 float accel_curr; 56 float delta_prev; 57 float delta_curr; 58 float delta_prev_buffer; 59 }; 60 61 struct t_shake_results { 62 //unsigned char shake_int; 63 int shake_number; 64 }; 65 66 struct t_shake_cb { 67 void (*shake_callback)(struct t_shake_results *shake_results); 68 }; 69 70 71 /* --------------------- */ 72 /* - Function p-types. - */ 73 /* --------------------- */ 74 inv_error_t inv_enable_shake(void); 75 inv_error_t inv_disable_shake(void); 76 inv_error_t inv_init_shake(void); 77 inv_error_t inv_start_shake(void); 78 int inv_set_shake_cb(void (*callback)(struct t_shake_results *shake_results)); 79 void inv_config_shake_time_params(long sample_time_ms); 80 void inv_set_shake_accel_delta_min(float accel_g); 81 void inv_set_shake_accel_delta_max(float accel_g); 82 void inv_set_shake_zero_cross_thresh(int num_zero_cross); 83 void inv_set_shake_deriv_thresh(float shake_deriv_thresh); 84 void inv_set_shake_time_min_ms(long time_ms); 85 void inv_set_shake_time_max_ms(long time_ms); 86 void inv_enable_shake_data_interpolation(unsigned char en); 87 88 89 90 #ifdef __cplusplus 91 } 92 #endif 93 94 #endif // INV_SHAKE__
