spo2_algorithm.h

00001 #ifndef SPO2_ALGORITHM_H_
00002 #define SPO2_ALGORITHM_H_
00003 
00004 #include "mbed.h"
00005 
00006 #define FS 25    //sampling frequency
00007 #define BUFFER_SIZE (FS * 4) 
00008 #define MA4_SIZE 4 // DONOT CHANGE
00009 #define HAMMING_SIZE  5
00010 #define min(x,y) ((x) < (y) ? (x) : (y)) //Defined in Arduino.h
00011 
00012 #define true 1
00013 #define false 0
00014 //#define FS 100
00015 //#define BUFFER_SIZE  (FS* 5) 
00016 #define HR_FIFO_SIZE 7
00017 #define MA4_SIZE  4 // DO NOT CHANGE
00018 #define HAMMING_SIZE  5// DO NOT CHANGE
00019 #define min(x,y) ((x) < (y) ? (x) : (y))
00020 
00021 
00022 class spo2_algorithm{
00023 
00024 void maxim_heart_rate_and_oxygen_saturation(uint32_t *pun_ir_buffer ,  int32_t n_ir_buffer_length, uint32_t *pun_red_buffer ,   int32_t *pn_spo2, int8_t *pch_spo2_valid ,  int32_t *pn_heart_rate , int8_t  *pch_hr_valid);
00025 void maxim_find_peaks( int32_t *pn_locs, int32_t *pn_npks,  int32_t *pn_x, int32_t n_size, int32_t n_min_height, int32_t n_min_distance, int32_t n_max_num );
00026 void maxim_peaks_above_min_height( int32_t *pn_locs, int32_t *pn_npks,  int32_t *pn_x, int32_t n_size, int32_t n_min_height );
00027 void maxim_remove_close_peaks( int32_t *pn_locs, int32_t *pn_npks,   int32_t  *pn_x, int32_t n_min_distance );
00028 void maxim_sort_ascend( int32_t *pn_x, int32_t n_size );
00029 void maxim_sort_indices_descend(  int32_t  *pn_x, int32_t *pn_indx, int32_t n_size);
00030 };
00031 #endif