#ifndef _HALL_SENSOR_H__
#define _HALL_SENSOR_H__
#include "os/os_type.h"
#include "bsp/bsp.h"

#define NEGATIVE          (int8_t)-1
#define POSITIVE          (int8_t)1

#define PHASE_0_DEGREE (0)
#define PHASE_60_DEGREE (60)
#define PHASE_120_DEGREE (120)
#define PHASE_180_DEGREE (180)
#define PHASE_240_DEGREE (240)
#define PHASE_300_DEGREE (300)
#define PHASE_360_DEGREE (360)

#define STATE_0 (uint8_t)0
#define STATE_1 (uint8_t)1
#define STATE_2 (uint8_t)2
#define STATE_3 (uint8_t)3
#define STATE_4 (uint8_t)4
#define STATE_5 (uint8_t)5
#define STATE_6 (uint8_t)6
#define STATE_7 (uint8_t)7

#define THETA_NONE        (float)0xFFFF
#define SAMPLE_MAX_COUNT 3

typedef struct {
	u32   ticks[SAMPLE_MAX_COUNT];
	float angles[SAMPLE_MAX_COUNT];
	u32   ticks_sum;
	float angles_sum;
	u32   index;
	bool  full;
}hall_sample_t;

typedef struct {
	float estimate_el_angle; //60度区间内的估计电角度
	s32   estimate_delta_angle;
	float estimate_el_speed;
	u32   estimate_time_ticks;	
	s32   measured_el_angle; //hall测量到的电角度
	float immediately_el_speed; //当前的即时速度,主要用来判断电机转动是否达到稳定
	float el_speed; 		//当前的平均效果的电角速度, 单位：rad/s
	float next_delta_angle;
	float rpm;        		//当前的电速度, 单位：RPM
	bool  trns_detect;     //速度变化超过阈值
	u8    hall_stat;
	u32   hall_ticks;
	s8    direction;
	s32   phase_offset;
	bool  is_override_angle;
	float override_el_angle;
	hall_sample_t samples;
	u32  sensor_error;
	u16  angle_table[8];
}hall_sensor_t;

void hall_sensor_init(void);
void hall_sensor_clear(void);
float hall_sensor_get_theta(void); //return degree
float hall_sensor_get_speed(void); //return rpm
float hall_sensor_avg_speed(void);
int hall_sensor_calibrate(float voltage);
void hall_sensor_set_theta(bool override, float theta);
int hall_offset_increase(int inc);
u16 *hall_get_table(void);

#endif /* _HALL_SENSOR_H__ */