Joseph Downing / Mbed OS BLEHeartRateMon Featured

Bluetooth Heart Rate Monitor using Maxim MAX32630FTHR & MAXREFDES117

Fork of mbed-os-example-ble-HeartRate by mbed-os-examples

algorithm/algorithm.h@49:5be03f287022, 2017-12-11 (annotated)

Committer:
Brakkion
Date:
Mon Dec 11 16:22:50 2017 +0000
Revision:
49:5be03f287022
Parent:
47:8ae30057edc0 
Created using MAX32630FTHR & MAXREFDES117

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Brakkion 47:8ae30057edc0 1 /** \file algorithm.h ******************************************************
Brakkion 47:8ae30057edc0 2 *
Brakkion 47:8ae30057edc0 3 * Project: MAXREFDES117#
Brakkion 47:8ae30057edc0 4 * Filename: algorithm.c
Brakkion 47:8ae30057edc0 5 * Description: This module is the heart rate/SpO2 calculation algorithm header file
Brakkion 47:8ae30057edc0 6 *
Brakkion 47:8ae30057edc0 7 * Revision History:
Brakkion 47:8ae30057edc0 8 *\n 1-18-2016 Rev 01.00 SK Initial release.
Brakkion 47:8ae30057edc0 9 *\n
Brakkion 47:8ae30057edc0 10 *
Brakkion 47:8ae30057edc0 11 * --------------------------------------------------------------------
Brakkion 47:8ae30057edc0 12 *
Brakkion 47:8ae30057edc0 13 * This code follows the following naming conventions:
Brakkion 47:8ae30057edc0 14 *
Brakkion 47:8ae30057edc0 15 *\n char ch_pmod_value
Brakkion 47:8ae30057edc0 16 *\n char (array) s_pmod_s_string[16]
Brakkion 47:8ae30057edc0 17 *\n float f_pmod_value
Brakkion 47:8ae30057edc0 18 *\n int32_t n_pmod_value
Brakkion 47:8ae30057edc0 19 *\n int32_t (array) an_pmod_value[16]
Brakkion 47:8ae30057edc0 20 *\n int16_t w_pmod_value
Brakkion 47:8ae30057edc0 21 *\n int16_t (array) aw_pmod_value[16]
Brakkion 47:8ae30057edc0 22 *\n uint16_t uw_pmod_value
Brakkion 47:8ae30057edc0 23 *\n uint16_t (array) auw_pmod_value[16]
Brakkion 47:8ae30057edc0 24 *\n uint8_t uch_pmod_value
Brakkion 47:8ae30057edc0 25 *\n uint8_t (array) auch_pmod_buffer[16]
Brakkion 47:8ae30057edc0 26 *\n uint32_t un_pmod_value
Brakkion 47:8ae30057edc0 27 *\n int32_t * pn_pmod_value
Brakkion 47:8ae30057edc0 28 *
Brakkion 47:8ae30057edc0 29 * ------------------------------------------------------------------------- */
Brakkion 47:8ae30057edc0 30 /*******************************************************************************
Brakkion 47:8ae30057edc0 31 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
Brakkion 47:8ae30057edc0 32 *
Brakkion 47:8ae30057edc0 33 * Permission is hereby granted, free of charge, to any person obtaining a
Brakkion 47:8ae30057edc0 34 * copy of this software and associated documentation files (the "Software"),
Brakkion 47:8ae30057edc0 35 * to deal in the Software without restriction, including without limitation
Brakkion 47:8ae30057edc0 36 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
Brakkion 47:8ae30057edc0 37 * and/or sell copies of the Software, and to permit persons to whom the
Brakkion 47:8ae30057edc0 38 * Software is furnished to do so, subject to the following conditions:
Brakkion 47:8ae30057edc0 39 *
Brakkion 47:8ae30057edc0 40 * The above copyright notice and this permission notice shall be included
Brakkion 47:8ae30057edc0 41 * in all copies or substantial portions of the Software.
Brakkion 47:8ae30057edc0 42 *
Brakkion 47:8ae30057edc0 43 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
Brakkion 47:8ae30057edc0 44 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
Brakkion 47:8ae30057edc0 45 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
Brakkion 47:8ae30057edc0 46 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
Brakkion 47:8ae30057edc0 47 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
Brakkion 47:8ae30057edc0 48 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
Brakkion 47:8ae30057edc0 49 * OTHER DEALINGS IN THE SOFTWARE.
Brakkion 47:8ae30057edc0 50 *
Brakkion 47:8ae30057edc0 51 * Except as contained in this notice, the name of Maxim Integrated
Brakkion 47:8ae30057edc0 52 * Products, Inc. shall not be used except as stated in the Maxim Integrated
Brakkion 47:8ae30057edc0 53 * Products, Inc. Branding Policy.
Brakkion 47:8ae30057edc0 54 *
Brakkion 47:8ae30057edc0 55 * The mere transfer of this software does not imply any licenses
Brakkion 47:8ae30057edc0 56 * of trade secrets, proprietary technology, copyrights, patents,
Brakkion 47:8ae30057edc0 57 * trademarks, maskwork rights, or any other form of intellectual
Brakkion 47:8ae30057edc0 58 * property whatsoever. Maxim Integrated Products, Inc. retains all
Brakkion 47:8ae30057edc0 59 * ownership rights.
Brakkion 47:8ae30057edc0 60 *******************************************************************************
Brakkion 47:8ae30057edc0 61 */
Brakkion 47:8ae30057edc0 62 #ifndef ALGORITHM_H_
Brakkion 47:8ae30057edc0 63 #define ALGORITHM_H_
Brakkion 47:8ae30057edc0 64
Brakkion 47:8ae30057edc0 65 #include "mbed.h"
Brakkion 47:8ae30057edc0 66
Brakkion 47:8ae30057edc0 67 #define true 1
Brakkion 47:8ae30057edc0 68 #define false 0
Brakkion 47:8ae30057edc0 69 #define FS 100
Brakkion 47:8ae30057edc0 70 #define BUFFER_SIZE (FS* 5)
Brakkion 47:8ae30057edc0 71 #define HR_FIFO_SIZE 7
Brakkion 47:8ae30057edc0 72 #define MA4_SIZE 4 // DO NOT CHANGE
Brakkion 47:8ae30057edc0 73 #define HAMMING_SIZE 5// DO NOT CHANGE
Brakkion 47:8ae30057edc0 74 #define min(x,y) ((x) < (y) ? (x) : (y))
Brakkion 47:8ae30057edc0 75
Brakkion 47:8ae30057edc0 76 const uint16_t auw_hamm[31]={ 41, 276, 512, 276, 41 }; //Hamm= long16(512* hamming(5)');
Brakkion 47:8ae30057edc0 77 //SPO2table is computed as -45.060*ratioAverage* ratioAverage + 30.354 *ratioAverage + 94.845 ;
Brakkion 47:8ae30057edc0 78 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,
Brakkion 47:8ae30057edc0 79 99, 99, 99, 99, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100,
Brakkion 47:8ae30057edc0 80 100, 100, 100, 100, 99, 99, 99, 99, 99, 99, 99, 99, 98, 98, 98, 98, 98, 98, 97, 97,
Brakkion 47:8ae30057edc0 81 97, 97, 96, 96, 96, 96, 95, 95, 95, 94, 94, 94, 93, 93, 93, 92, 92, 92, 91, 91,
Brakkion 47:8ae30057edc0 82 90, 90, 89, 89, 89, 88, 88, 87, 87, 86, 86, 85, 85, 84, 84, 83, 82, 82, 81, 81,
Brakkion 47:8ae30057edc0 83 80, 80, 79, 78, 78, 77, 76, 76, 75, 74, 74, 73, 72, 72, 71, 70, 69, 69, 68, 67,
Brakkion 47:8ae30057edc0 84 66, 66, 65, 64, 63, 62, 62, 61, 60, 59, 58, 57, 56, 56, 55, 54, 53, 52, 51, 50,
Brakkion 47:8ae30057edc0 85 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 31, 30, 29,
Brakkion 47:8ae30057edc0 86 28, 27, 26, 25, 23, 22, 21, 20, 19, 17, 16, 15, 14, 12, 11, 10, 9, 7, 6, 5,
Brakkion 47:8ae30057edc0 87 3, 2, 1 } ;
Brakkion 47:8ae30057edc0 88 static int32_t an_dx[ BUFFER_SIZE-MA4_SIZE]; // delta
Brakkion 47:8ae30057edc0 89 static int32_t an_x[ BUFFER_SIZE]; //ir
Brakkion 47:8ae30057edc0 90 static int32_t an_y[ BUFFER_SIZE]; //red
Brakkion 47:8ae30057edc0 91
Brakkion 47:8ae30057edc0 92
Brakkion 47:8ae30057edc0 93 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);
Brakkion 47:8ae30057edc0 94 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 );
Brakkion 47:8ae30057edc0 95 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 );
Brakkion 47:8ae30057edc0 96 void maxim_remove_close_peaks( int32_t *pn_locs, int32_t *pn_npks, int32_t *pn_x, int32_t n_min_distance );
Brakkion 47:8ae30057edc0 97 void maxim_sort_ascend( int32_t *pn_x, int32_t n_size );
Brakkion 47:8ae30057edc0 98 void maxim_sort_indices_descend( int32_t *pn_x, int32_t *pn_indx, int32_t n_size);
Brakkion 47:8ae30057edc0 99
Brakkion 47:8ae30057edc0 100 #endif /* ALGORITHM_H_ */