Maxim Integrated / Mbed 2 deprecated RD117_MBED

MBED firmware for MAXREFDES117 Heart Rate / SpO2 sensor. Tested on KL25Z, K64F, and MAX32600MBED#

Dependencies:   mbed

algorithm/algorithm.h@4:5273ab1085ab, 2016-05-19 (annotated)

Committer:
MaximGordon
Date:
Thu May 19 22:04:06 2016 +0000
Revision:
4:5273ab1085ab
Parent:
3:7c0fb55eb3ff 
improved coding style

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MaximGordon 0:346a7fa07998 1 /** \file algorithm.h ******************************************************
MaximGordon 0:346a7fa07998 2 *
MaximGordon 0:346a7fa07998 3 * Project: MAXREFDES117#
MaximGordon 0:346a7fa07998 4 * Filename: algorithm.c
MaximGordon 0:346a7fa07998 5 * Description: This module is the heart rate/SpO2 calculation algorithm header file
MaximGordon 0:346a7fa07998 6 *
MaximGordon 0:346a7fa07998 7 * Revision History:
MaximGordon 0:346a7fa07998 8 *\n 1-18-2016 Rev 01.00 SK Initial release.
MaximGordon 0:346a7fa07998 9 *\n
MaximGordon 0:346a7fa07998 10 *
MaximGordon 0:346a7fa07998 11 * --------------------------------------------------------------------
MaximGordon 0:346a7fa07998 12 *
MaximGordon 0:346a7fa07998 13 * This code follows the following naming conventions:
MaximGordon 0:346a7fa07998 14 *
MaximGordon 0:346a7fa07998 15 *\n char ch_pmod_value
MaximGordon 0:346a7fa07998 16 *\n char (array) s_pmod_s_string[16]
MaximGordon 0:346a7fa07998 17 *\n float f_pmod_value
MaximGordon 0:346a7fa07998 18 *\n int32_t n_pmod_value
MaximGordon 0:346a7fa07998 19 *\n int32_t (array) an_pmod_value[16]
MaximGordon 0:346a7fa07998 20 *\n int16_t w_pmod_value
MaximGordon 0:346a7fa07998 21 *\n int16_t (array) aw_pmod_value[16]
MaximGordon 0:346a7fa07998 22 *\n uint16_t uw_pmod_value
MaximGordon 0:346a7fa07998 23 *\n uint16_t (array) auw_pmod_value[16]
MaximGordon 0:346a7fa07998 24 *\n uint8_t uch_pmod_value
MaximGordon 0:346a7fa07998 25 *\n uint8_t (array) auch_pmod_buffer[16]
MaximGordon 0:346a7fa07998 26 *\n uint32_t un_pmod_value
MaximGordon 0:346a7fa07998 27 *\n int32_t * pn_pmod_value
MaximGordon 0:346a7fa07998 28 *
MaximGordon 0:346a7fa07998 29 * ------------------------------------------------------------------------- */
MaximGordon 0:346a7fa07998 30 /*******************************************************************************
MaximGordon 0:346a7fa07998 31 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
MaximGordon 0:346a7fa07998 32 *
MaximGordon 0:346a7fa07998 33 * Permission is hereby granted, free of charge, to any person obtaining a
MaximGordon 0:346a7fa07998 34 * copy of this software and associated documentation files (the "Software"),
MaximGordon 0:346a7fa07998 35 * to deal in the Software without restriction, including without limitation
MaximGordon 0:346a7fa07998 36 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
MaximGordon 0:346a7fa07998 37 * and/or sell copies of the Software, and to permit persons to whom the
MaximGordon 0:346a7fa07998 38 * Software is furnished to do so, subject to the following conditions:
MaximGordon 0:346a7fa07998 39 *
MaximGordon 0:346a7fa07998 40 * The above copyright notice and this permission notice shall be included
MaximGordon 0:346a7fa07998 41 * in all copies or substantial portions of the Software.
MaximGordon 0:346a7fa07998 42 *
MaximGordon 0:346a7fa07998 43 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
MaximGordon 0:346a7fa07998 44 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MaximGordon 0:346a7fa07998 45 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
MaximGordon 0:346a7fa07998 46 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
MaximGordon 0:346a7fa07998 47 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
MaximGordon 0:346a7fa07998 48 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
MaximGordon 0:346a7fa07998 49 * OTHER DEALINGS IN THE SOFTWARE.
MaximGordon 0:346a7fa07998 50 *
MaximGordon 0:346a7fa07998 51 * Except as contained in this notice, the name of Maxim Integrated
MaximGordon 0:346a7fa07998 52 * Products, Inc. shall not be used except as stated in the Maxim Integrated
MaximGordon 0:346a7fa07998 53 * Products, Inc. Branding Policy.
MaximGordon 0:346a7fa07998 54 *
MaximGordon 0:346a7fa07998 55 * The mere transfer of this software does not imply any licenses
MaximGordon 0:346a7fa07998 56 * of trade secrets, proprietary technology, copyrights, patents,
MaximGordon 0:346a7fa07998 57 * trademarks, maskwork rights, or any other form of intellectual
MaximGordon 0:346a7fa07998 58 * property whatsoever. Maxim Integrated Products, Inc. retains all
MaximGordon 0:346a7fa07998 59 * ownership rights.
MaximGordon 0:346a7fa07998 60 *******************************************************************************
MaximGordon 0:346a7fa07998 61 */
MaximGordon 0:346a7fa07998 62 #ifndef ALGORITHM_H_
MaximGordon 0:346a7fa07998 63 #define ALGORITHM_H_
MaximGordon 0:346a7fa07998 64
MaximGordon 0:346a7fa07998 65 #include "mbed.h"
MaximGordon 0:346a7fa07998 66
MaximGordon 0:346a7fa07998 67 #define true 1
MaximGordon 0:346a7fa07998 68 #define false 0
MaximGordon 0:346a7fa07998 69 #define FS 100
MaximGordon 0:346a7fa07998 70 #define BUFFER_SIZE (FS* 5)
MaximGordon 0:346a7fa07998 71 #define HR_FIFO_SIZE 7
MaximGordon 3:7c0fb55eb3ff 72 #define MA4_SIZE 4 // DO NOT CHANGE
MaximGordon 3:7c0fb55eb3ff 73 #define HAMMING_SIZE 5// DO NOT CHANGE
MaximGordon 0:346a7fa07998 74 #define min(x,y) ((x) < (y) ? (x) : (y))
MaximGordon 0:346a7fa07998 75
MaximGordon 3:7c0fb55eb3ff 76 const uint16_t auw_hamm[31]={ 41, 276, 512, 276, 41 }; //Hamm= long16(512* hamming(5)');
MaximGordon 0:346a7fa07998 77 //SPO2table is computed as -45.060*ratioAverage* ratioAverage + 30.354 *ratioAverage + 94.845 ;
MaximGordon 0:346a7fa07998 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,
MaximGordon 0:346a7fa07998 79 99, 99, 99, 99, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100,
MaximGordon 0:346a7fa07998 80 100, 100, 100, 100, 99, 99, 99, 99, 99, 99, 99, 99, 98, 98, 98, 98, 98, 98, 97, 97,
MaximGordon 0:346a7fa07998 81 97, 97, 96, 96, 96, 96, 95, 95, 95, 94, 94, 94, 93, 93, 93, 92, 92, 92, 91, 91,
MaximGordon 0:346a7fa07998 82 90, 90, 89, 89, 89, 88, 88, 87, 87, 86, 86, 85, 85, 84, 84, 83, 82, 82, 81, 81,
MaximGordon 0:346a7fa07998 83 80, 80, 79, 78, 78, 77, 76, 76, 75, 74, 74, 73, 72, 72, 71, 70, 69, 69, 68, 67,
MaximGordon 0:346a7fa07998 84 66, 66, 65, 64, 63, 62, 62, 61, 60, 59, 58, 57, 56, 56, 55, 54, 53, 52, 51, 50,
MaximGordon 0:346a7fa07998 85 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 31, 30, 29,
MaximGordon 0:346a7fa07998 86 28, 27, 26, 25, 23, 22, 21, 20, 19, 17, 16, 15, 14, 12, 11, 10, 9, 7, 6, 5,
MaximGordon 0:346a7fa07998 87 3, 2, 1 } ;
MaximGordon 3:7c0fb55eb3ff 88 static int32_t an_dx[ BUFFER_SIZE-MA4_SIZE]; // delta
MaximGordon 3:7c0fb55eb3ff 89 static int32_t an_x[ BUFFER_SIZE]; //ir
MaximGordon 3:7c0fb55eb3ff 90 static int32_t an_y[ BUFFER_SIZE]; //red
MaximGordon 0:346a7fa07998 91
MaximGordon 0:346a7fa07998 92
MaximGordon 3:7c0fb55eb3ff 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);
MaximGordon 3:7c0fb55eb3ff 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 );
MaximGordon 3:7c0fb55eb3ff 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 );
MaximGordon 3:7c0fb55eb3ff 96 void maxim_remove_close_peaks( int32_t *pn_locs, int32_t *pn_npks, int32_t *pn_x, int32_t n_min_distance );
MaximGordon 3:7c0fb55eb3ff 97 void maxim_sort_ascend( int32_t *pn_x, int32_t n_size );
MaximGordon 3:7c0fb55eb3ff 98 void maxim_sort_indices_descend( int32_t *pn_x, int32_t *pn_indx, int32_t n_size);
MaximGordon 0:346a7fa07998 99
MaximGordon 0:346a7fa07998 100 #endif /* ALGORITHM_H_ */