Filter.h

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#ifndef _FILTER_h
#define _FILTER_h
 
#if defined(ARDUINO) && ARDUINO >= 100
    #include "Arduino.h"
#else
    #include "WProgram.h"
#endif
 
#define MAX_ORDER 20
#define MIN_ORDER 2
 
typedef enum {
    MEDIAN_FILTER, 
    AVERAGE_FILTER 
} FilterType_t;
 
class FilterClass
{
 protected:
     FilterType_t _filterType; 
     uint8_t _order; 
     float* _rawValues; 
     float* _orderedValues; 
     float* _weightValues; 
     uint _index = 0;
 
     float aveFilter(float value);
    
     int divide(float * array, int start, int end);
     
     void quicksort(float * array, int start, int end);
 
     float medianFilter(float value);
 
 public:
     FilterClass(FilterType_t type, uint8_t order);
 
     float addWeigth (float coeff);
 
     float addValue(float value);
 
     void clear ();
 
     ~FilterClass();
};
 
#endif