Grove_Barometer_HP20x/KalmanFilter.h

/*
 * File name  : kalmanFilter.h
 * Description:  
 * Author     : Oliver Wang from Seeed studio
 * Version    : V0.1
 * Create Time: 2014/04
 * Change Log :
*/

#ifndef _KALMANFILTER_H
#define _KALMANFILTER_H
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/***        Include files                                                 ***/
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#include <Arduino.h>
#include <inttypes.h>
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/***        Local variables                                               ***/
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/***        Class Definitions                                             ***/
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class KalmanFilter
{
    public:
	  KalmanFilter();	 
	  float Filter(float);
	private:
	/* variables */
	float X_pre, X_post, P_pre, P_post, K_cur; 
	float Gaussian_Noise_Cov(void);
	
};
extern KalmanFilter kalmanFilter;
#endif