Projet_BMC / Mbed 2 deprecated MAX3010x_RD117_MBED_

MAXREFDES#117

Dependencies:   mbed USBDevice

main.cpp@5:e7b8e61b1fe1, 2020-01-27 (annotated)

Committer:
the_nabil
Date:
Mon Jan 27 11:27:41 2020 +0000
Revision:
5:e7b8e61b1fe1
Parent:
4:5273ab1085ab 
MAXREFDES#117

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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"
MaximGordon 0:346a7fa07998 75 #include "algorithm.h"
MaximGordon 0:346a7fa07998 76 #include "MAX30102.h"
the_nabil 5:e7b8e61b1fe1 77 #include "USBSerial.h"
MaximGordon 0:346a7fa07998 78
MaximGordon 0:346a7fa07998 79 #define MAX_BRIGHTNESS 255
MaximGordon 0:346a7fa07998 80
MaximGordon 3:7c0fb55eb3ff 81 uint32_t aun_ir_buffer[500]; //IR LED sensor data
MaximGordon 0:346a7fa07998 82 int32_t n_ir_buffer_length; //data length
MaximGordon 3:7c0fb55eb3ff 83 uint32_t aun_red_buffer[500]; //Red LED sensor data
MaximGordon 0:346a7fa07998 84 int32_t n_sp02; //SPO2 value
MaximGordon 0:346a7fa07998 85 int8_t ch_spo2_valid; //indicator to show if the SP02 calculation is valid
MaximGordon 0:346a7fa07998 86 int32_t n_heart_rate; //heart rate value
MaximGordon 0:346a7fa07998 87 int8_t ch_hr_valid; //indicator to show if the heart rate calculation is valid
MaximGordon 0:346a7fa07998 88 uint8_t uch_dummy;
MaximGordon 0:346a7fa07998 89
the_nabil 5:e7b8e61b1fe1 90 USBSerial pc; //initializes the serial port
the_nabil 5:e7b8e61b1fe1 91
the_nabil 5:e7b8e61b1fe1 92 /*
MaximGordon 0:346a7fa07998 93 #ifdef TARGET_KL25Z
MaximGordon 0:346a7fa07998 94 PwmOut led(PTB18); //initializes the pwm output that connects to the on board LED
MaximGordon 0:346a7fa07998 95 DigitalIn INT(PTD1); //pin PTD1 connects to the interrupt output pin of the MAX30102
MaximGordon 0:346a7fa07998 96 #endif
MaximGordon 0:346a7fa07998 97 #ifdef TARGET_K64F
MaximGordon 0:346a7fa07998 98 DigitalIn INT(PTD1); //pin PTD1 connects to the interrupt output pin of the MAX30102
MaximGordon 0:346a7fa07998 99 #endif
MaximGordon 0:346a7fa07998 100 #ifdef TARGET_MAX32600MBED
MaximGordon 0:346a7fa07998 101 PwmOut led(LED_RED); //initializes the pwm output that connects to the on board LED
MaximGordon 0:346a7fa07998 102 DigitalIn INT(P2_0); //pin P20 connects to the interrupt output pin of the MAX30102
MaximGordon 0:346a7fa07998 103 #endif
the_nabil 5:e7b8e61b1fe1 104 */
MaximGordon 0:346a7fa07998 105
MaximGordon 0:346a7fa07998 106 // the setup routine runs once when you press reset:
the_nabil 5:e7b8e61b1fe1 107 // the setup routine runs once when you press reset:
MaximGordon 0:346a7fa07998 108 int main() {
MaximGordon 0:346a7fa07998 109 uint32_t un_min, un_max, un_prev_data; //variables to calculate the on-board LED brightness that reflects the heartbeats
MaximGordon 0:346a7fa07998 110 int i;
MaximGordon 0:346a7fa07998 111 int32_t n_brightness;
MaximGordon 0:346a7fa07998 112 float f_temp;
MaximGordon 0:346a7fa07998 113
MaximGordon 0:346a7fa07998 114 maxim_max30102_reset(); //resets the MAX30102
MaximGordon 0:346a7fa07998 115 // initialize serial communication at 115200 bits per second:
the_nabil 5:e7b8e61b1fe1 116 //pc.baud(115200);
the_nabil 5:e7b8e61b1fe1 117 //pc.format(8,SerialBase::None,1);
MaximGordon 0:346a7fa07998 118 wait(1);
MaximGordon 0:346a7fa07998 119
MaximGordon 0:346a7fa07998 120 //read and clear status register
the_nabil 5:e7b8e61b1fe1 121 //maxim_max30102_read_reg(0,&uch_dummy);
MaximGordon 0:346a7fa07998 122
MaximGordon 0:346a7fa07998 123 //wait until the user presses a key
the_nabil 5:e7b8e61b1fe1 124 //while(pc.readable()==0)
the_nabil 5:e7b8e61b1fe1 125 //{
the_nabil 5:e7b8e61b1fe1 126 //pc.printf("\x1B[2J"); //clear terminal program screen
the_nabil 5:e7b8e61b1fe1 127 // pc.printf("Press any key to start conversion\n\r");
the_nabil 5:e7b8e61b1fe1 128 // wait(1);
the_nabil 5:e7b8e61b1fe1 129 //}
the_nabil 5:e7b8e61b1fe1 130 //uch_dummy=getchar();
MaximGordon 0:346a7fa07998 131
MaximGordon 0:346a7fa07998 132 maxim_max30102_init(); //initializes the MAX30102
MaximGordon 0:346a7fa07998 133
MaximGordon 0:346a7fa07998 134
MaximGordon 0:346a7fa07998 135 n_brightness=0;
MaximGordon 0:346a7fa07998 136 un_min=0x3FFFF;
MaximGordon 0:346a7fa07998 137 un_max=0;
MaximGordon 0:346a7fa07998 138
MaximGordon 0:346a7fa07998 139 n_ir_buffer_length=500; //buffer length of 100 stores 5 seconds of samples running at 100sps
MaximGordon 0:346a7fa07998 140
MaximGordon 0:346a7fa07998 141 //read the first 500 samples, and determine the signal range
MaximGordon 0:346a7fa07998 142 for(i=0;i<n_ir_buffer_length;i++)
MaximGordon 0:346a7fa07998 143 {
the_nabil 5:e7b8e61b1fe1 144 //while(INT.read()==1); //wait until the interrupt pin asserts
MaximGordon 0:346a7fa07998 145
MaximGordon 3:7c0fb55eb3ff 146 maxim_max30102_read_fifo((aun_red_buffer+i), (aun_ir_buffer+i)); //read from MAX30102 FIFO
MaximGordon 0:346a7fa07998 147
MaximGordon 3:7c0fb55eb3ff 148 if(un_min>aun_red_buffer[i])
MaximGordon 3:7c0fb55eb3ff 149 un_min=aun_red_buffer[i]; //update signal min
MaximGordon 3:7c0fb55eb3ff 150 if(un_max<aun_red_buffer[i])
MaximGordon 3:7c0fb55eb3ff 151 un_max=aun_red_buffer[i]; //update signal max
MaximGordon 0:346a7fa07998 152 pc.printf("red=");
MaximGordon 3:7c0fb55eb3ff 153 pc.printf("%i", aun_red_buffer[i]);
MaximGordon 0:346a7fa07998 154 pc.printf(", ir=");
MaximGordon 3:7c0fb55eb3ff 155 pc.printf("%i\n\r", aun_ir_buffer[i]);
MaximGordon 0:346a7fa07998 156 }
MaximGordon 3:7c0fb55eb3ff 157 un_prev_data=aun_red_buffer[i];
MaximGordon 0:346a7fa07998 158
MaximGordon 0:346a7fa07998 159
MaximGordon 0:346a7fa07998 160 //calculate heart rate and SpO2 after first 500 samples (first 5 seconds of samples)
MaximGordon 4:5273ab1085ab 161 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);
MaximGordon 0:346a7fa07998 162
MaximGordon 0:346a7fa07998 163 //Continuously taking samples from MAX30102. Heart rate and SpO2 are calculated every 1 second
MaximGordon 0:346a7fa07998 164 while(1)
MaximGordon 0:346a7fa07998 165 {
MaximGordon 0:346a7fa07998 166 i=0;
MaximGordon 0:346a7fa07998 167 un_min=0x3FFFF;
MaximGordon 0:346a7fa07998 168 un_max=0;
MaximGordon 0:346a7fa07998 169
MaximGordon 0:346a7fa07998 170 //dumping the first 100 sets of samples in the memory and shift the last 400 sets of samples to the top
MaximGordon 0:346a7fa07998 171 for(i=100;i<500;i++)
MaximGordon 0:346a7fa07998 172 {
MaximGordon 3:7c0fb55eb3ff 173 aun_red_buffer[i-100]=aun_red_buffer[i];
MaximGordon 3:7c0fb55eb3ff 174 aun_ir_buffer[i-100]=aun_ir_buffer[i];
MaximGordon 0:346a7fa07998 175
MaximGordon 0:346a7fa07998 176 //update the signal min and max
MaximGordon 3:7c0fb55eb3ff 177 if(un_min>aun_red_buffer[i])
MaximGordon 3:7c0fb55eb3ff 178 un_min=aun_red_buffer[i];
MaximGordon 3:7c0fb55eb3ff 179 if(un_max<aun_red_buffer[i])
MaximGordon 3:7c0fb55eb3ff 180 un_max=aun_red_buffer[i];
MaximGordon 0:346a7fa07998 181 }
MaximGordon 0:346a7fa07998 182
MaximGordon 0:346a7fa07998 183 //take 100 sets of samples before calculating the heart rate.
MaximGordon 0:346a7fa07998 184 for(i=400;i<500;i++)
MaximGordon 0:346a7fa07998 185 {
MaximGordon 3:7c0fb55eb3ff 186 un_prev_data=aun_red_buffer[i-1];
the_nabil 5:e7b8e61b1fe1 187 //while(INT.read()==1);
MaximGordon 3:7c0fb55eb3ff 188 maxim_max30102_read_fifo((aun_red_buffer+i), (aun_ir_buffer+i));
MaximGordon 0:346a7fa07998 189
MaximGordon 3:7c0fb55eb3ff 190 if(aun_red_buffer[i]>un_prev_data)
MaximGordon 0:346a7fa07998 191 {
MaximGordon 3:7c0fb55eb3ff 192 f_temp=aun_red_buffer[i]-un_prev_data;
MaximGordon 0:346a7fa07998 193 f_temp/=(un_max-un_min);
MaximGordon 0:346a7fa07998 194 f_temp*=MAX_BRIGHTNESS;
MaximGordon 0:346a7fa07998 195 n_brightness-=(int)f_temp;
MaximGordon 0:346a7fa07998 196 if(n_brightness<0)
MaximGordon 0:346a7fa07998 197 n_brightness=0;
MaximGordon 0:346a7fa07998 198 }
MaximGordon 0:346a7fa07998 199 else
MaximGordon 0:346a7fa07998 200 {
MaximGordon 3:7c0fb55eb3ff 201 f_temp=un_prev_data-aun_red_buffer[i];
MaximGordon 0:346a7fa07998 202 f_temp/=(un_max-un_min);
MaximGordon 0:346a7fa07998 203 f_temp*=MAX_BRIGHTNESS;
MaximGordon 0:346a7fa07998 204 n_brightness+=(int)f_temp;
MaximGordon 0:346a7fa07998 205 if(n_brightness>MAX_BRIGHTNESS)
MaximGordon 0:346a7fa07998 206 n_brightness=MAX_BRIGHTNESS;
MaximGordon 0:346a7fa07998 207 }
MaximGordon 0:346a7fa07998 208 #if defined(TARGET_KL25Z) || defined(TARGET_MAX32600MBED)
MaximGordon 0:346a7fa07998 209 led.write(1-(float)n_brightness/256);
MaximGordon 0:346a7fa07998 210 #endif
MaximGordon 0:346a7fa07998 211 //send samples and calculation result to terminal program through UART
MaximGordon 0:346a7fa07998 212 pc.printf("red=");
MaximGordon 4:5273ab1085ab 213 pc.printf("%i", aun_red_buffer[i]);
MaximGordon 0:346a7fa07998 214 pc.printf(", ir=");
MaximGordon 3:7c0fb55eb3ff 215 pc.printf("%i", aun_ir_buffer[i]);
MaximGordon 4:5273ab1085ab 216 pc.printf(", HR=%i, ", n_heart_rate);
MaximGordon 4:5273ab1085ab 217 pc.printf("HRvalid=%i, ", ch_hr_valid);
MaximGordon 4:5273ab1085ab 218 pc.printf("SpO2=%i, ", n_sp02);
MaximGordon 4:5273ab1085ab 219 pc.printf("SPO2Valid=%i\n\r", ch_spo2_valid);
the_nabil 5:e7b8e61b1fe1 220 wait(1);
MaximGordon 0:346a7fa07998 221 }
MaximGordon 4:5273ab1085ab 222 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);
MaximGordon 0:346a7fa07998 223 }
MaximGordon 0:346a7fa07998 224 }
the_nabil 5:e7b8e61b1fe1 225
the_nabil 5:e7b8e61b1fe1 226