#ifndef _PROVALCTRL_H_
#define _PROVALCTRL_H_

extern float ao_dwq;		//AO输出电流值(定位器)
extern float ao_blf1;		//AO输出电流值(比例阀)
extern float ao_blf2;		//AO输出电流值(比例阀)

typedef enum
{
	PROV_RUNNING = 0,
	PROV_ADJUSTING = 1,
	PROV_HOLDING = 2
}prov_status;

typedef enum
{
	ADJ_START = 0,
	ADJ_MOVE2MIDDLE = 1,
	ADJ_OSCILLATE = 2,
	ADJ_CALCULATE = 3,
	ADJ_END = 4,
	ADJ_WAIT = 5
}adj_steps;

typedef struct
{
	prov_status status;
	
	float current_pressure;
	float current_percent;
	float target_pressure;
	float target_percent;
	float current_input;
	float input_max;	
	float input_min;
	float bias;	
	float bias_previous;
	float bias_area;						//bias permitted [-a, a]%
	
	float Kp;										//used for pid control
	float Ti;
	float Ing;
	float Ing_sum;
	float Ing_max;
	float Ing_min;
	float Td;
	float Ts;
	float Div;
	float pidout;
	float pidout_max;
	float pidout_min;
	
	float cstep_gasin;    			// tinny step adjust
	float cstep_gasout;  
	float cstep_max;
	float cstep_min;
	unsigned char cstep_wait;
	
	void (*pvout)(float pout);	//dac out
}propotion_valve;							//propotion valve

#define OSCILL_TIMES 10
typedef struct
{
	unsigned char adj_flag;
	float relay_d;
	float relay_a[OSCILL_TIMES];
	float relay_A;
	float relay_tc[OSCILL_TIMES];
	float relay_Tc;
	float air_source;
	float middle_current;
	unsigned char oscil_times;
	
}prov_adjust;

extern propotion_valve pv_one;
extern propotion_valve pv_two;

void prov_init(void);
void prov_adj_init(void);
void prov_set(float target_p, propotion_valve *pvx);
void prov_ctrl(propotion_valve *pvx, prov_adjust *adj_pvx);
void prov_calibrate_pid(propotion_valve *pvx);
void prov_calibrate_step(propotion_valve *pvx);
void analog_ctrl(void);
float abs_bias(float bias);
void prov_adj(propotion_valve *pvx, prov_adjust *adj_pvx);

#define CSTEP_WAIT_MAX 0
#define BIAS_MAX 10












/******************************************************************************************/
#endif