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                                                 ***/
/****************************************************************************/
#include <Arduino.h>
#include <inttypes.h>
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/***        Local variables                                               ***/
/****************************************************************************/


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/***        Class Definitions                                             ***/
/****************************************************************************/
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