STM32F4-Environmental-Monitoring/filter_8h_source.html

#ifndef INC_FILTER_H_

#define INC_FILTER_H_


#include "stdint.h"


#define MAX_WINDOW_SIZE 20


typedef struct {

    float   window[MAX_WINDOW_SIZE];

    uint8_t count;

} Filter_Handle_t;


float filter_sensor_value(Filter_Handle_t *p_filt, float raw_sensor_value,

                           uint8_t window_size);


float calculate_median(float *array, uint8_t array_size);


void bubble_sort(float *array, uint8_t array_size);


#endif /* INC_FILTER_H_ */

MAX_WINDOW_SIZE
#define MAX_WINDOW_SIZE
Maximum number of samples the filter window can hold.
Definition filter.h:25

bubble_sort
void bubble_sort(float *array, uint8_t array_size)
Sorts a float array in ascending order using bubble sort.
Definition filter.c:37

calculate_median
float calculate_median(float *array, uint8_t array_size)
Computes the median of a pre-sorted float array.
Definition filter.c:54

filter_sensor_value
float filter_sensor_value(Filter_Handle_t *p_filt, float raw_sensor_value, uint8_t window_size)
Applies a sliding-window median filter to a single raw sample.
Definition filter.c:11

Filter_Handle_t
Internal state of one sliding-window median filter instance.
Definition filter.h:30

Filter_Handle_t::count
uint8_t count
Definition filter.h:32

Filter_Handle_t::window
float window[MAX_WINDOW_SIZE]
Definition filter.h:31