Deniz Dosluoglu / Mbed 2 deprecated RD117_MBED_mod

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Dependencies:   ToScreen mbed

Fork of RD117_MBED by Maxim Integrated

main.cpp@5:27d600e46926, 2018-04-10 (annotated)

Committer:
denizdosluoglu
Date:
Tue Apr 10 03:36:39 2018 +0000
Revision:
5:27d600e46926
Parent:
4:5273ab1085ab
Child:
6:519bdb0ec306
Changed algorithm

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MaximGordon 0:346a7fa07998 1 /** \file main.cpp ******************************************************
MaximGordon 0:346a7fa07998 2 *
MaximGordon 0:346a7fa07998 3 * Project: MAXREFDES117#
MaximGordon 0:346a7fa07998 4 * Filename: main.cpp
MaximGordon 0:346a7fa07998 5 * Description: This module contains the Main application for the MAXREFDES117 example program.
MaximGordon 0:346a7fa07998 6 *
MaximGordon 0:346a7fa07998 7 *
MaximGordon 0:346a7fa07998 8 * --------------------------------------------------------------------
MaximGordon 0:346a7fa07998 9 *
MaximGordon 0:346a7fa07998 10 * This code follows the following naming conventions:
MaximGordon 0:346a7fa07998 11 *
MaximGordon 4:5273ab1085ab 12 * char ch_pmod_value
MaximGordon 4:5273ab1085ab 13 * char (array) s_pmod_s_string[16]
MaximGordon 4:5273ab1085ab 14 * float f_pmod_value
MaximGordon 4:5273ab1085ab 15 * int32_t n_pmod_value
MaximGordon 4:5273ab1085ab 16 * int32_t (array) an_pmod_value[16]
MaximGordon 4:5273ab1085ab 17 * int16_t w_pmod_value
MaximGordon 4:5273ab1085ab 18 * int16_t (array) aw_pmod_value[16]
MaximGordon 4:5273ab1085ab 19 * uint16_t uw_pmod_value
MaximGordon 4:5273ab1085ab 20 * uint16_t (array) auw_pmod_value[16]
MaximGordon 4:5273ab1085ab 21 * uint8_t uch_pmod_value
MaximGordon 4:5273ab1085ab 22 * uint8_t (array) auch_pmod_buffer[16]
MaximGordon 4:5273ab1085ab 23 * uint32_t un_pmod_value
MaximGordon 4:5273ab1085ab 24 * int32_t * pn_pmod_value
MaximGordon 0:346a7fa07998 25 *
MaximGordon 0:346a7fa07998 26 * ------------------------------------------------------------------------- */
MaximGordon 0:346a7fa07998 27 /*******************************************************************************
MaximGordon 4:5273ab1085ab 28 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
MaximGordon 0:346a7fa07998 29 *
MaximGordon 0:346a7fa07998 30 * Permission is hereby granted, free of charge, to any person obtaining a
MaximGordon 0:346a7fa07998 31 * copy of this software and associated documentation files (the "Software"),
MaximGordon 0:346a7fa07998 32 * to deal in the Software without restriction, including without limitation
MaximGordon 0:346a7fa07998 33 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
MaximGordon 0:346a7fa07998 34 * and/or sell copies of the Software, and to permit persons to whom the
MaximGordon 0:346a7fa07998 35 * Software is furnished to do so, subject to the following conditions:
MaximGordon 0:346a7fa07998 36 *
MaximGordon 0:346a7fa07998 37 * The above copyright notice and this permission notice shall be included
MaximGordon 0:346a7fa07998 38 * in all copies or substantial portions of the Software.
MaximGordon 0:346a7fa07998 39 *
MaximGordon 0:346a7fa07998 40 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
MaximGordon 0:346a7fa07998 41 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MaximGordon 0:346a7fa07998 42 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
MaximGordon 0:346a7fa07998 43 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
MaximGordon 0:346a7fa07998 44 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
MaximGordon 0:346a7fa07998 45 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
MaximGordon 0:346a7fa07998 46 * OTHER DEALINGS IN THE SOFTWARE.
MaximGordon 0:346a7fa07998 47 *
MaximGordon 0:346a7fa07998 48 * Except as contained in this notice, the name of Maxim Integrated
MaximGordon 0:346a7fa07998 49 * Products, Inc. shall not be used except as stated in the Maxim Integrated
MaximGordon 0:346a7fa07998 50 * Products, Inc. Branding Policy.
MaximGordon 0:346a7fa07998 51 *
MaximGordon 0:346a7fa07998 52 * The mere transfer of this software does not imply any licenses
MaximGordon 0:346a7fa07998 53 * of trade secrets, proprietary technology, copyrights, patents,
MaximGordon 0:346a7fa07998 54 * trademarks, maskwork rights, or any other form of intellectual
MaximGordon 0:346a7fa07998 55 * property whatsoever. Maxim Integrated Products, Inc. retains all
MaximGordon 0:346a7fa07998 56 * ownership rights.
MaximGordon 0:346a7fa07998 57 *******************************************************************************
MaximGordon 0:346a7fa07998 58 */
MaximGordon 0:346a7fa07998 59 /*!\mainpage Main Page
MaximGordon 0:346a7fa07998 60 *
MaximGordon 0:346a7fa07998 61 * \section intro_sec Introduction
MaximGordon 0:346a7fa07998 62 *
MaximGordon 0:346a7fa07998 63 * This is the code documentation for the MAXREFDES117# subsystem reference design.
MaximGordon 4:5273ab1085ab 64 *
MaximGordon 4:5273ab1085ab 65 * The Files page contains the File List page and the Globals page.
MaximGordon 4:5273ab1085ab 66 *
MaximGordon 4:5273ab1085ab 67 * The Globals page contains the Functions, Variables, and Macros sub-pages.
MaximGordon 0:346a7fa07998 68 *
MaximGordon 0:346a7fa07998 69 * \image html MAXREFDES117_Block_Diagram.png "MAXREFDES117# System Block Diagram"
MaximGordon 4:5273ab1085ab 70 *
MaximGordon 0:346a7fa07998 71 * \image html MAXREFDES117_firmware_Flowchart.png "MAXREFDES117# Firmware Flowchart"
MaximGordon 0:346a7fa07998 72 *
MaximGordon 0:346a7fa07998 73 */
MaximGordon 0:346a7fa07998 74 #include "mbed.h"
denizdosluoglu 5:27d600e46926 75 //#include "algorithm.h"
denizdosluoglu 5:27d600e46926 76 #include "algorithm_by_RF.h"
MaximGordon 0:346a7fa07998 77 #include "MAX30102.h"
denizdosluoglu 5:27d600e46926 78 #include "C12832.h"
MaximGordon 0:346a7fa07998 79 #define MAX_BRIGHTNESS 255
denizdosluoglu 5:27d600e46926 80 /*
denizdosluoglu 5:27d600e46926 81 #ifndef PLATFORM_H_
denizdosluoglu 5:27d600e46926 82 #define PLATFORM_H_
denizdosluoglu 5:27d600e46926 83 //disable application functions
denizdosluoglu 5:27d600e46926 84 #define PL_BOARD_IS_FRDM 1
denizdosluoglu 5:27d600e46926 85 #define PL_HAS_LOW_POWER 1
denizdosluoglu 5:27d600e46926 86 #define PL_HAS_SHELL 0
denizdosluoglu 5:27d600e46926 87 #define PL_HAS_LED 1
denizdosluoglu 5:27d600e46926 88 #define PL_HAS_RTOS 0
denizdosluoglu 5:27d600e46926 89
denizdosluoglu 5:27d600e46926 90 #endif PLATFORM_H_ */
MaximGordon 0:346a7fa07998 91
MaximGordon 3:7c0fb55eb3ff 92 uint32_t aun_ir_buffer[500]; //IR LED sensor data
denizdosluoglu 5:27d600e46926 93 //int32_t n_ir_buffer_length; //data length
denizdosluoglu 5:27d600e46926 94 float n_ir_buffer_length; //data length
MaximGordon 3:7c0fb55eb3ff 95 uint32_t aun_red_buffer[500]; //Red LED sensor data
denizdosluoglu 5:27d600e46926 96 //int32_t n_sp02; //SPO2 value
denizdosluoglu 5:27d600e46926 97 float n_sp02;//SPO2 value
MaximGordon 0:346a7fa07998 98 int8_t ch_spo2_valid; //indicator to show if the SP02 calculation is valid
MaximGordon 0:346a7fa07998 99 int32_t n_heart_rate; //heart rate value
MaximGordon 0:346a7fa07998 100 int8_t ch_hr_valid; //indicator to show if the heart rate calculation is valid
MaximGordon 0:346a7fa07998 101 uint8_t uch_dummy;
denizdosluoglu 5:27d600e46926 102 Timer t;
MaximGordon 0:346a7fa07998 103
MaximGordon 0:346a7fa07998 104 Serial pc(USBTX, USBRX); //initializes the serial port
MaximGordon 0:346a7fa07998 105 #ifdef TARGET_KL25Z
MaximGordon 0:346a7fa07998 106 PwmOut led(PTB18); //initializes the pwm output that connects to the on board LED
denizdosluoglu 5:27d600e46926 107 DigitalIn INT(PTD0); //pin PTD0 connects to the interrupt output pin of the MAX30102
MaximGordon 0:346a7fa07998 108 #endif
MaximGordon 0:346a7fa07998 109 #ifdef TARGET_K64F
MaximGordon 0:346a7fa07998 110 DigitalIn INT(PTD1); //pin PTD1 connects to the interrupt output pin of the MAX30102
MaximGordon 0:346a7fa07998 111 #endif
MaximGordon 0:346a7fa07998 112 #ifdef TARGET_MAX32600MBED
MaximGordon 0:346a7fa07998 113 PwmOut led(LED_RED); //initializes the pwm output that connects to the on board LED
MaximGordon 0:346a7fa07998 114 DigitalIn INT(P2_0); //pin P20 connects to the interrupt output pin of the MAX30102
MaximGordon 0:346a7fa07998 115 #endif
MaximGordon 0:346a7fa07998 116
denizdosluoglu 5:27d600e46926 117 //C12832 lcd(PTD2,PTD1,PTA20,PTD5, PTD4);
denizdosluoglu 5:27d600e46926 118
MaximGordon 0:346a7fa07998 119 // the setup routine runs once when you press reset:
MaximGordon 0:346a7fa07998 120 int main() {
denizdosluoglu 5:27d600e46926 121 t.start();
denizdosluoglu 5:27d600e46926 122 //lcd.cls();
denizdosluoglu 5:27d600e46926 123 // wait(100);
denizdosluoglu 5:27d600e46926 124 // lcd.printf("Hello world");
denizdosluoglu 5:27d600e46926 125 /*
denizdosluoglu 5:27d600e46926 126 wait(100);
denizdosluoglu 5:27d600e46926 127
denizdosluoglu 5:27d600e46926 128 for (int i = 20; i < 30; i++)
denizdosluoglu 5:27d600e46926 129 {
denizdosluoglu 5:27d600e46926 130 for (int j = 20; j <30; j++)
denizdosluoglu 5:27d600e46926 131 {
denizdosluoglu 5:27d600e46926 132 lcd.clearpixel(i,j);
denizdosluoglu 5:27d600e46926 133 }
denizdosluoglu 5:27d600e46926 134 }
denizdosluoglu 5:27d600e46926 135 */
denizdosluoglu 5:27d600e46926 136
MaximGordon 0:346a7fa07998 137 uint32_t un_min, un_max, un_prev_data; //variables to calculate the on-board LED brightness that reflects the heartbeats
MaximGordon 0:346a7fa07998 138 int i;
MaximGordon 0:346a7fa07998 139 int32_t n_brightness;
denizdosluoglu 5:27d600e46926 140 float f_temp, ratio, correl;
MaximGordon 0:346a7fa07998 141
MaximGordon 0:346a7fa07998 142 maxim_max30102_reset(); //resets the MAX30102
MaximGordon 0:346a7fa07998 143 // initialize serial communication at 115200 bits per second:
MaximGordon 0:346a7fa07998 144 pc.baud(115200);
MaximGordon 0:346a7fa07998 145 pc.format(8,SerialBase::None,1);
MaximGordon 0:346a7fa07998 146 wait(1);
MaximGordon 0:346a7fa07998 147
MaximGordon 0:346a7fa07998 148 //read and clear status register
MaximGordon 0:346a7fa07998 149 maxim_max30102_read_reg(0,&uch_dummy);
MaximGordon 0:346a7fa07998 150
MaximGordon 0:346a7fa07998 151 //wait until the user presses a key
MaximGordon 0:346a7fa07998 152 while(pc.readable()==0)
MaximGordon 0:346a7fa07998 153 {
MaximGordon 4:5273ab1085ab 154 pc.printf("\x1B[2J"); //clear terminal program screen
MaximGordon 0:346a7fa07998 155 pc.printf("Press any key to start conversion\n\r");
MaximGordon 0:346a7fa07998 156 wait(1);
MaximGordon 0:346a7fa07998 157 }
MaximGordon 0:346a7fa07998 158 uch_dummy=getchar();
MaximGordon 0:346a7fa07998 159
MaximGordon 0:346a7fa07998 160 maxim_max30102_init(); //initializes the MAX30102
MaximGordon 0:346a7fa07998 161
MaximGordon 0:346a7fa07998 162
MaximGordon 0:346a7fa07998 163 n_brightness=0;
MaximGordon 0:346a7fa07998 164 un_min=0x3FFFF;
MaximGordon 0:346a7fa07998 165 un_max=0;
MaximGordon 0:346a7fa07998 166
denizdosluoglu 5:27d600e46926 167 //n_ir_buffer_length=500; //buffer length of 500 stores 5 seconds of samples running at 100sps
MaximGordon 0:346a7fa07998 168
MaximGordon 0:346a7fa07998 169 //read the first 500 samples, and determine the signal range
denizdosluoglu 5:27d600e46926 170 //READ 100 SAMPLES
denizdosluoglu 5:27d600e46926 171 for(i=0;i<BUFFER_SIZE;i++)
MaximGordon 0:346a7fa07998 172 {
MaximGordon 0:346a7fa07998 173 while(INT.read()==1); //wait until the interrupt pin asserts
MaximGordon 0:346a7fa07998 174
MaximGordon 3:7c0fb55eb3ff 175 maxim_max30102_read_fifo((aun_red_buffer+i), (aun_ir_buffer+i)); //read from MAX30102 FIFO
MaximGordon 0:346a7fa07998 176
MaximGordon 3:7c0fb55eb3ff 177 if(un_min>aun_red_buffer[i])
MaximGordon 3:7c0fb55eb3ff 178 un_min=aun_red_buffer[i]; //update signal min
MaximGordon 3:7c0fb55eb3ff 179 if(un_max<aun_red_buffer[i])
MaximGordon 3:7c0fb55eb3ff 180 un_max=aun_red_buffer[i]; //update signal max
MaximGordon 0:346a7fa07998 181 pc.printf("red=");
MaximGordon 3:7c0fb55eb3ff 182 pc.printf("%i", aun_red_buffer[i]);
MaximGordon 0:346a7fa07998 183 pc.printf(", ir=");
MaximGordon 3:7c0fb55eb3ff 184 pc.printf("%i\n\r", aun_ir_buffer[i]);
MaximGordon 0:346a7fa07998 185 }
denizdosluoglu 5:27d600e46926 186 rf_heart_rate_and_oxygen_saturation(aun_ir_buffer, BUFFER_SIZE, aun_red_buffer, &n_sp02, &ch_spo2_valid, &n_heart_rate, &ch_hr_valid, &ratio, &correl);
denizdosluoglu 5:27d600e46926 187 pc.printf("%i ", t.read_ms());
denizdosluoglu 5:27d600e46926 188 pc.printf("%i ", aun_red_buffer[i]);
denizdosluoglu 5:27d600e46926 189 //pc.printf(", ir=");
denizdosluoglu 5:27d600e46926 190 pc.printf("%i ", aun_ir_buffer[i]);
denizdosluoglu 5:27d600e46926 191 //pc.printf(", HR=%i, ", n_heart_rate);
denizdosluoglu 5:27d600e46926 192 pc.printf("%i ", n_heart_rate);
denizdosluoglu 5:27d600e46926 193 //pc.printf("HRvalid=%i, ", ch_hr_valid);
denizdosluoglu 5:27d600e46926 194 pc.printf("%i ", ch_hr_valid);
denizdosluoglu 5:27d600e46926 195 //pc.printf("SpO2=%i, ", n_sp02);
denizdosluoglu 5:27d600e46926 196 pc.printf("%i ", n_sp02);
denizdosluoglu 5:27d600e46926 197 //pc.printf("SPO2Valid=%i\n\r", ch_spo2_valid);
denizdosluoglu 5:27d600e46926 198 pc.printf("%i\n\r", ch_spo2_valid);
denizdosluoglu 5:27d600e46926 199
MaximGordon 3:7c0fb55eb3ff 200 un_prev_data=aun_red_buffer[i];
MaximGordon 0:346a7fa07998 201
MaximGordon 0:346a7fa07998 202
MaximGordon 0:346a7fa07998 203 //calculate heart rate and SpO2 after first 500 samples (first 5 seconds of samples)
denizdosluoglu 5:27d600e46926 204 //maxim_heart_rate_and_oxygen_saturation(aun_ir_buffer, n_ir_buffer_length, aun_red_buffer, &n_sp02, &ch_spo2_valid, &n_heart_rate, &ch_hr_valid);
denizdosluoglu 5:27d600e46926 205 rf_heart_rate_and_oxygen_saturation(aun_ir_buffer, n_ir_buffer_length, aun_red_buffer, &n_sp02, &ch_spo2_valid, &n_heart_rate, &ch_hr_valid, &ratio, &correl);
MaximGordon 0:346a7fa07998 206 //Continuously taking samples from MAX30102. Heart rate and SpO2 are calculated every 1 second
denizdosluoglu 5:27d600e46926 207 //while(1) //infinite loop
denizdosluoglu 5:27d600e46926 208 for (int a = 0; a<20; a++)//acquire finite amount of data
MaximGordon 0:346a7fa07998 209 {
MaximGordon 0:346a7fa07998 210 i=0;
MaximGordon 0:346a7fa07998 211 un_min=0x3FFFF;
MaximGordon 0:346a7fa07998 212 un_max=0;
MaximGordon 0:346a7fa07998 213
MaximGordon 0:346a7fa07998 214 //dumping the first 100 sets of samples in the memory and shift the last 400 sets of samples to the top
denizdosluoglu 5:27d600e46926 215 //revision, dump first 25
denizdosluoglu 5:27d600e46926 216 //for(i=100;i<500;i++)
denizdosluoglu 5:27d600e46926 217 for(i=20;i<100;i++)
MaximGordon 0:346a7fa07998 218 {
denizdosluoglu 5:27d600e46926 219 aun_red_buffer[i-20]=aun_red_buffer[i];
denizdosluoglu 5:27d600e46926 220 aun_ir_buffer[i-20]=aun_ir_buffer[i];
denizdosluoglu 5:27d600e46926 221 //aun_red_buffer[i-25]=aun_red_buffer[i];
denizdosluoglu 5:27d600e46926 222 //aun_ir_buffer[i-25]=aun_ir_buffer[i];
MaximGordon 0:346a7fa07998 223 //update the signal min and max
MaximGordon 3:7c0fb55eb3ff 224 if(un_min>aun_red_buffer[i])
MaximGordon 3:7c0fb55eb3ff 225 un_min=aun_red_buffer[i];
MaximGordon 3:7c0fb55eb3ff 226 if(un_max<aun_red_buffer[i])
MaximGordon 3:7c0fb55eb3ff 227 un_max=aun_red_buffer[i];
MaximGordon 0:346a7fa07998 228 }
MaximGordon 0:346a7fa07998 229
MaximGordon 0:346a7fa07998 230 //take 100 sets of samples before calculating the heart rate.
denizdosluoglu 5:27d600e46926 231 //take
denizdosluoglu 5:27d600e46926 232 //for(i=400;i<500;i++)
denizdosluoglu 5:27d600e46926 233 for(i=80;i<100;i++)
MaximGordon 0:346a7fa07998 234 {
MaximGordon 3:7c0fb55eb3ff 235 un_prev_data=aun_red_buffer[i-1];
MaximGordon 0:346a7fa07998 236 while(INT.read()==1);
MaximGordon 3:7c0fb55eb3ff 237 maxim_max30102_read_fifo((aun_red_buffer+i), (aun_ir_buffer+i));
MaximGordon 0:346a7fa07998 238
MaximGordon 3:7c0fb55eb3ff 239 if(aun_red_buffer[i]>un_prev_data)
MaximGordon 0:346a7fa07998 240 {
MaximGordon 3:7c0fb55eb3ff 241 f_temp=aun_red_buffer[i]-un_prev_data;
MaximGordon 0:346a7fa07998 242 f_temp/=(un_max-un_min);
MaximGordon 0:346a7fa07998 243 f_temp*=MAX_BRIGHTNESS;
MaximGordon 0:346a7fa07998 244 n_brightness-=(int)f_temp;
MaximGordon 0:346a7fa07998 245 if(n_brightness<0)
MaximGordon 0:346a7fa07998 246 n_brightness=0;
MaximGordon 0:346a7fa07998 247 }
MaximGordon 0:346a7fa07998 248 else
MaximGordon 0:346a7fa07998 249 {
MaximGordon 3:7c0fb55eb3ff 250 f_temp=un_prev_data-aun_red_buffer[i];
MaximGordon 0:346a7fa07998 251 f_temp/=(un_max-un_min);
MaximGordon 0:346a7fa07998 252 f_temp*=MAX_BRIGHTNESS;
MaximGordon 0:346a7fa07998 253 n_brightness+=(int)f_temp;
MaximGordon 0:346a7fa07998 254 if(n_brightness>MAX_BRIGHTNESS)
MaximGordon 0:346a7fa07998 255 n_brightness=MAX_BRIGHTNESS;
MaximGordon 0:346a7fa07998 256 }
MaximGordon 0:346a7fa07998 257 #if defined(TARGET_KL25Z) || defined(TARGET_MAX32600MBED)
MaximGordon 0:346a7fa07998 258 led.write(1-(float)n_brightness/256);
MaximGordon 0:346a7fa07998 259 #endif
MaximGordon 0:346a7fa07998 260 //send samples and calculation result to terminal program through UART
denizdosluoglu 5:27d600e46926 261 // pc.printf("red="); // remove heading to make compatible with MATLAB
denizdosluoglu 5:27d600e46926 262
denizdosluoglu 5:27d600e46926 263 //write seconds to create seventh column for martins code
denizdosluoglu 5:27d600e46926 264 pc.printf("%i ", t.read_ms());
denizdosluoglu 5:27d600e46926 265 pc.printf("%i ", aun_red_buffer[i]);
denizdosluoglu 5:27d600e46926 266 //pc.printf(", ir=");
denizdosluoglu 5:27d600e46926 267 pc.printf("%i ", aun_ir_buffer[i]);
denizdosluoglu 5:27d600e46926 268 //pc.printf(", HR=%i, ", n_heart_rate);
denizdosluoglu 5:27d600e46926 269 pc.printf("%i ", n_heart_rate);
denizdosluoglu 5:27d600e46926 270 //pc.printf("HRvalid=%i, ", ch_hr_valid);
denizdosluoglu 5:27d600e46926 271 pc.printf("%i ", ch_hr_valid);
denizdosluoglu 5:27d600e46926 272 //pc.printf("SpO2=%i, ", n_sp02);
denizdosluoglu 5:27d600e46926 273 pc.printf("%i ", n_sp02);
denizdosluoglu 5:27d600e46926 274 //pc.printf("SPO2Valid=%i\n\r", ch_spo2_valid);
denizdosluoglu 5:27d600e46926 275 pc.printf("%i\n\r", ch_spo2_valid);
MaximGordon 0:346a7fa07998 276 }
denizdosluoglu 5:27d600e46926 277 //maxim_heart_rate_and_oxygen_saturation(aun_ir_buffer, n_ir_buffer_length, aun_red_buffer, &n_sp02, &ch_spo2_valid, &n_heart_rate, &ch_hr_valid);
denizdosluoglu 5:27d600e46926 278 rf_heart_rate_and_oxygen_saturation(aun_ir_buffer, n_ir_buffer_length, aun_red_buffer, &n_sp02, &ch_spo2_valid, &n_heart_rate, &ch_hr_valid, &ratio, &correl);
MaximGordon 0:346a7fa07998 279 }
denizdosluoglu 5:27d600e46926 280
MaximGordon 0:346a7fa07998 281 }
MaximGordon 0:346a7fa07998 282