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- #ifndef ALGORITHM_H_
- #define ALGORITHM_H_
- #include <stdint.h>
- #define true 1
- #define false 0
- #define FS 100
- #define BUFFER_SIZE (FS* 5)
- #define HR_FIFO_SIZE 7
- #define MA4_SIZE 4
- #define HAMMING_SIZE 5
- #define min(x,y) ((x) < (y) ? (x) : (y))
- const uint16_t auw_hamm[31]={ 41, 276, 512, 276, 41 };
- const uint8_t uch_spo2_table[184]={ 95, 95, 95, 96, 96, 96, 97, 97, 97, 97, 97, 98, 98, 98, 98, 98, 99, 99, 99, 99,
- 99, 99, 99, 99, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100,
- 100, 100, 100, 100, 99, 99, 99, 99, 99, 99, 99, 99, 98, 98, 98, 98, 98, 98, 97, 97,
- 97, 97, 96, 96, 96, 96, 95, 95, 95, 94, 94, 94, 93, 93, 93, 92, 92, 92, 91, 91,
- 90, 90, 89, 89, 89, 88, 88, 87, 87, 86, 86, 85, 85, 84, 84, 83, 82, 82, 81, 81,
- 80, 80, 79, 78, 78, 77, 76, 76, 75, 74, 74, 73, 72, 72, 71, 70, 69, 69, 68, 67,
- 66, 66, 65, 64, 63, 62, 62, 61, 60, 59, 58, 57, 56, 56, 55, 54, 53, 52, 51, 50,
- 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 31, 30, 29,
- 28, 27, 26, 25, 23, 22, 21, 20, 19, 17, 16, 15, 14, 12, 11, 10, 9, 7, 6, 5,
- 3, 2, 1 } ;
- static int32_t an_dx[ BUFFER_SIZE-MA4_SIZE];
- static int32_t an_x[ BUFFER_SIZE];
- static int32_t an_y[ BUFFER_SIZE];
- 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);
- 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 );
- 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 );
- void maxim_remove_close_peaks( int32_t *pn_locs, int32_t *pn_npks, int32_t *pn_x, int32_t n_min_distance );
- void maxim_sort_ascend( int32_t *pn_x, int32_t n_size );
- void maxim_sort_indices_descend( int32_t *pn_x, int32_t *pn_indx, int32_t n_size);
- #endif
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