Jeannie Hur / Working_HRV

HRV -> Mood

Dependencies:   MAX30101 Hexi_KW40Z Hexi_OLED_SSD1351

8cee5929f4d8/main.cpp@17:611a14bc8afd, 2019-03-18 (annotated)

Committer:
jeannie9809
Date:
Mon Mar 18 01:03:38 2019 +0000
Revision:
17:611a14bc8afd
Parent:
16:8b4f1abd8acc
Child:
18:0d1ef7ea9d4b
better connection

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jeannie9809 0:338c50c9c8cd 1 #include "mbed.h"
jeannie9809 0:338c50c9c8cd 2 #include "mbed_events.h"
jeannie9809 0:338c50c9c8cd 3 #include "MAX30101.h"
jeannie9809 0:338c50c9c8cd 4 #include "string.h"
jeannie9809 0:338c50c9c8cd 5 #include "Hexi_OLED_SSD1351.h"
jeannie9809 0:338c50c9c8cd 6 #include "Hexi_KW40Z.h"
jeannie9809 14:0258b126d726 7
jeannie9809 14:0258b126d726 8 #include "OLED_types.h"
jeannie9809 14:0258b126d726 9 #include "OpenSans_Font.h"
jeannie9809 14:0258b126d726 10
jeannie9809 0:338c50c9c8cd 11 #include <math.h>
jeannie9809 6:ff1c3560db84 12 #include <vector>
jeannie9809 6:ff1c3560db84 13 using namespace std;
jeannie9809 11:58a443cf3f7c 14
jeannie9809 0:338c50c9c8cd 15 #define FIFO_DATA_MAX 288
jeannie9809 11:58a443cf3f7c 16 //#define M_PI 3.14159265358979323846
jeannie9809 11:58a443cf3f7c 17 #define M_PI 3.14159
jeannie9809 11:58a443cf3f7c 18
jeannie9809 0:338c50c9c8cd 19 void UpdateSensorData(void);
jeannie9809 0:338c50c9c8cd 20 void StartHaptic(void);
jeannie9809 0:338c50c9c8cd 21 void StopHaptic(void const *n);
jeannie9809 0:338c50c9c8cd 22 void txTask(void);
jeannie9809 0:338c50c9c8cd 23
jeannie9809 14:0258b126d726 24 DigitalOut blueLed(LED3,1); // i added this
jeannie9809 14:0258b126d726 25
jeannie9809 0:338c50c9c8cd 26 DigitalOut pwr1v8(PTA29);
jeannie9809 0:338c50c9c8cd 27 DigitalOut pwr3v3b(PTC13);
jeannie9809 0:338c50c9c8cd 28 DigitalOut pwr15v(PTB12);
jeannie9809 0:338c50c9c8cd 29 I2C i2c0(PTB1, PTB0);
jeannie9809 0:338c50c9c8cd 30 InterruptIn maximInterrupt(PTB18);
jeannie9809 0:338c50c9c8cd 31 Serial pc(USBTX, USBRX);
jeannie9809 0:338c50c9c8cd 32 SSD1351 oled(PTB22,PTB21,PTC13,PTB20,PTE6, PTD15);
jeannie9809 0:338c50c9c8cd 33 KW40Z kw40z_device(PTE24, PTE25);
jeannie9809 0:338c50c9c8cd 34 DigitalOut haptic(PTB9);
jeannie9809 0:338c50c9c8cd 35 EventQueue evqueue(32 * EVENTS_EVENT_SIZE);
jeannie9809 0:338c50c9c8cd 36 Thread t;
jeannie9809 0:338c50c9c8cd 37 /* Define timer for haptic feedback */
jeannie9809 0:338c50c9c8cd 38 RtosTimer hapticTimer(StopHaptic, osTimerOnce);
jeannie9809 0:338c50c9c8cd 39
jeannie9809 3:0da9235c9069 40 /*Create a Thread to handle sending BLE Sensor Data */
jeannie9809 0:338c50c9c8cd 41 Thread txThread;
jeannie9809 0:338c50c9c8cd 42 MAX30101 hr(i2c0);
jeannie9809 1:eabf219849ab 43 int ppg_single_sample;
jeannie9809 0:338c50c9c8cd 44 int mask_ppg = 0;
jeannie9809 0:338c50c9c8cd 45 uint32_t count = 0;
jeannie9809 0:338c50c9c8cd 46 uint32_t num;
jeannie9809 14:0258b126d726 47 // uint8_t testsignal = 60;
jeannie9809 14:0258b126d726 48
jeannie9809 14:0258b126d726 49 uint8_t battery = 0;
jeannie9809 14:0258b126d726 50
jeannie9809 14:0258b126d726 51 char text[20]; /* Text Buffer */
jeannie9809 0:338c50c9c8cd 52
jeannie9809 2:3389bdfd9afa 53 // I added this
jeannie9809 11:58a443cf3f7c 54 const int num_samples = 500; // for 30 sec
jeannie9809 0:338c50c9c8cd 55 int ppg[num_samples];
jeannie9809 13:45c2837ab056 56 int SDNN, valence_arousal;
jeannie9809 12:95d141421e18 57 double HF_LF = 0.0;
jeannie9809 13:45c2837ab056 58 double HF_LF_n;
jeannie9809 13:45c2837ab056 59 int SDNN_n = 0;
jeannie9809 9:83dcb7382516 60 bool ready = false;
jeannie9809 14:0258b126d726 61 bool ready_to_send = false;
jeannie9809 0:338c50c9c8cd 62
jeannie9809 3:0da9235c9069 63 void StartHaptic(void)
jeannie9809 3:0da9235c9069 64 {
jeannie9809 0:338c50c9c8cd 65 hapticTimer.start(50);
jeannie9809 0:338c50c9c8cd 66 haptic = 1;
jeannie9809 0:338c50c9c8cd 67 }
jeannie9809 0:338c50c9c8cd 68 void ButtonRight(void)
jeannie9809 0:338c50c9c8cd 69 {
jeannie9809 0:338c50c9c8cd 70 StartHaptic();
jeannie9809 0:338c50c9c8cd 71 kw40z_device.ToggleAdvertisementMode();
jeannie9809 0:338c50c9c8cd 72 }
jeannie9809 0:338c50c9c8cd 73
jeannie9809 0:338c50c9c8cd 74 void ButtonLeft(void)
jeannie9809 0:338c50c9c8cd 75 {
jeannie9809 0:338c50c9c8cd 76 StartHaptic();
jeannie9809 0:338c50c9c8cd 77 kw40z_device.ToggleAdvertisementMode();
jeannie9809 0:338c50c9c8cd 78 }
jeannie9809 0:338c50c9c8cd 79
jeannie9809 3:0da9235c9069 80 void StopHaptic(void const *n)
jeannie9809 3:0da9235c9069 81 {
jeannie9809 0:338c50c9c8cd 82 haptic = 0;
jeannie9809 0:338c50c9c8cd 83 hapticTimer.stop();
jeannie9809 0:338c50c9c8cd 84 }
jeannie9809 3:0da9235c9069 85 void txTask(void)
jeannie9809 3:0da9235c9069 86 {
jeannie9809 3:0da9235c9069 87
jeannie9809 3:0da9235c9069 88 while (true) {
jeannie9809 17:611a14bc8afd 89 /*
jeannie9809 14:0258b126d726 90 while(ready_to_send == false) {
jeannie9809 16:8b4f1abd8acc 91 Thread::wait(1000); // wait until has something to send
jeannie9809 14:0258b126d726 92 }
jeannie9809 17:611a14bc8afd 93 */
jeannie9809 14:0258b126d726 94
jeannie9809 17:611a14bc8afd 95 if(ready_to_send) {
jeannie9809 17:611a14bc8afd 96 UpdateSensorData();
jeannie9809 17:611a14bc8afd 97
jeannie9809 17:611a14bc8afd 98 printf("Sending!");
jeannie9809 17:611a14bc8afd 99 kw40z_device.SendBatteryLevel(battery);
jeannie9809 17:611a14bc8afd 100
jeannie9809 17:611a14bc8afd 101 ready_to_send = false;
jeannie9809 17:611a14bc8afd 102 }
jeannie9809 0:338c50c9c8cd 103 /*Notify Hexiwear App that it is running Sensor Tag mode*/
jeannie9809 0:338c50c9c8cd 104 kw40z_device.SendSetApplicationMode(GUI_CURRENT_APP_SENSOR_TAG);
jeannie9809 14:0258b126d726 105
jeannie9809 14:0258b126d726 106
jeannie9809 0:338c50c9c8cd 107 //send heartrate
jeannie9809 14:0258b126d726 108 // kw40z_device.SendHeartRate(testsignal);
jeannie9809 0:338c50c9c8cd 109 /*The following is sending dummy data over BLE. Replace with real data*/
jeannie9809 3:0da9235c9069 110
jeannie9809 3:0da9235c9069 111 /*Send Battery Level for 20%
jeannie9809 0:338c50c9c8cd 112 kw40z_device.SendBatteryLevel(battery);
jeannie9809 3:0da9235c9069 113
jeannie9809 3:0da9235c9069 114 Send Ambient Light Level at 50%
jeannie9809 0:338c50c9c8cd 115 kw40z_device.SendAmbientLight(light);*/
jeannie9809 3:0da9235c9069 116
jeannie9809 0:338c50c9c8cd 117 /*Send Humidity at 90% */
jeannie9809 0:338c50c9c8cd 118 //kw40z_device.SendHumidity(humidity);
jeannie9809 3:0da9235c9069 119
jeannie9809 3:0da9235c9069 120 /*Send Temperature at 25 degrees Celsius
jeannie9809 0:338c50c9c8cd 121 kw40z_device.SendTemperature(temperature);
jeannie9809 0:338c50c9c8cd 122
jeannie9809 11:58a443cf3f7c 123 //Send Pressure at 100kPA
jeannie9809 11:58a443cf3f7c 124 //kw40z_device.SendPressure(pressure); */
jeannie9809 3:0da9235c9069 125
jeannie9809 3:0da9235c9069 126 /*Send Mag,Accel,Gyro Data.
jeannie9809 0:338c50c9c8cd 127 kw40z_device.SendGyro(x,y,z);
jeannie9809 0:338c50c9c8cd 128 kw40z_device.SendAccel(z,x,y);
jeannie9809 0:338c50c9c8cd 129 kw40z_device.SendMag(y,z,x);*/
jeannie9809 0:338c50c9c8cd 130
jeannie9809 3:0da9235c9069 131 Thread::wait(1000);
jeannie9809 0:338c50c9c8cd 132 }
jeannie9809 0:338c50c9c8cd 133 }
jeannie9809 0:338c50c9c8cd 134 void UpdateSensorData(void)
jeannie9809 3:0da9235c9069 135 {
jeannie9809 14:0258b126d726 136 // testsignal+=1;
jeannie9809 14:0258b126d726 137 battery = valence_arousal;
jeannie9809 0:338c50c9c8cd 138 /*battery -= 5;
jeannie9809 0:338c50c9c8cd 139 if(battery < 5) battery = 100;
jeannie9809 3:0da9235c9069 140
jeannie9809 0:338c50c9c8cd 141 light += 20;
jeannie9809 0:338c50c9c8cd 142 if(light > 100) light = 0;
jeannie9809 3:0da9235c9069 143
jeannie9809 0:338c50c9c8cd 144 humidity += 500;
jeannie9809 0:338c50c9c8cd 145 if(humidity > 8000) humidity = 2000;
jeannie9809 3:0da9235c9069 146
jeannie9809 0:338c50c9c8cd 147 temperature -= 200;
jeannie9809 0:338c50c9c8cd 148 if(temperature < 200) temperature = 4200;
jeannie9809 3:0da9235c9069 149
jeannie9809 0:338c50c9c8cd 150 pressure += 300;
jeannie9809 0:338c50c9c8cd 151 if(pressure > 10300) pressure = 7500;
jeannie9809 3:0da9235c9069 152
jeannie9809 0:338c50c9c8cd 153 x += 1400;
jeannie9809 0:338c50c9c8cd 154 y -= 2300;
jeannie9809 0:338c50c9c8cd 155 z += 1700;*/
jeannie9809 0:338c50c9c8cd 156 }
jeannie9809 0:338c50c9c8cd 157
jeannie9809 3:0da9235c9069 158 void interruptHandlerQueued()
jeannie9809 3:0da9235c9069 159 {
jeannie9809 4:94190624967a 160 // int temp_ppg[num_samples];
jeannie9809 3:0da9235c9069 161 for(int iter = 0; iter < num_samples; iter+=0) {
jeannie9809 0:338c50c9c8cd 162
jeannie9809 3:0da9235c9069 163 MAX30101::InterruptBitField_u interruptStatus;
jeannie9809 3:0da9235c9069 164 hr.getInterruptStatus(interruptStatus);
jeannie9809 3:0da9235c9069 165 // printf("Interrupt Status: 0x%02x\r\n", interruptStatus.all);
jeannie9809 3:0da9235c9069 166
jeannie9809 3:0da9235c9069 167 if (interruptStatus.bits.pwr_rdy == 0x1) {
jeannie9809 3:0da9235c9069 168 // printf("Powered on\r\n");
jeannie9809 3:0da9235c9069 169
jeannie9809 3:0da9235c9069 170 // Soft reset
jeannie9809 3:0da9235c9069 171 MAX30101::ModeConfiguration_u modeConf;
jeannie9809 3:0da9235c9069 172 modeConf.all = 0;
jeannie9809 3:0da9235c9069 173 modeConf.bits.reset = 1;
jeannie9809 3:0da9235c9069 174 hr.setModeConfiguration(modeConf);
jeannie9809 3:0da9235c9069 175 wait(0.01);
jeannie9809 3:0da9235c9069 176
jeannie9809 3:0da9235c9069 177 // Configure FIFO
jeannie9809 3:0da9235c9069 178 MAX30101::FIFO_Configuration_u fifoConf;
jeannie9809 3:0da9235c9069 179 hr.getFIFOConfiguration(fifoConf);
jeannie9809 0:338c50c9c8cd 180 // pc.printf("FIFO Configuration: 0x%02x\r\n", fifoConf.all);
jeannie9809 3:0da9235c9069 181
jeannie9809 3:0da9235c9069 182 // Set LED power
jeannie9809 3:0da9235c9069 183 hr.setLEDPulseAmplitude(MAX30101::LED1_PA, 0x0C);
jeannie9809 3:0da9235c9069 184 hr.setLEDPulseAmplitude(MAX30101::ProxModeLED_PA, 0x19);
jeannie9809 0:338c50c9c8cd 185 // pc.printf("LED set\r\n");
jeannie9809 3:0da9235c9069 186
jeannie9809 3:0da9235c9069 187 MAX30101::SpO2Configuration_u spo2Conf;
jeannie9809 3:0da9235c9069 188 hr.getSpO2Configuration(spo2Conf);
jeannie9809 3:0da9235c9069 189 spo2Conf.bits.led_pw = MAX30101::PW_1;
jeannie9809 3:0da9235c9069 190 spo2Conf.bits.spo2_sr = MAX30101::SR_100_Hz;
jeannie9809 3:0da9235c9069 191 hr.setSpO2Configuration(spo2Conf);
jeannie9809 3:0da9235c9069 192 hr.getSpO2Configuration(spo2Conf);
jeannie9809 0:338c50c9c8cd 193 // pc.printf("SpO2 Configuration: 0x%02x\r\n", spo2Conf.all);
jeannie9809 3:0da9235c9069 194
jeannie9809 3:0da9235c9069 195 // Proximity settings
jeannie9809 3:0da9235c9069 196 hr.setProxIntThreshold(0x14);
jeannie9809 3:0da9235c9069 197
jeannie9809 3:0da9235c9069 198 // Enable HR mode
jeannie9809 3:0da9235c9069 199 modeConf.all = 0;
jeannie9809 3:0da9235c9069 200 modeConf.bits.mode = MAX30101::HeartRateMode;
jeannie9809 3:0da9235c9069 201 hr.setModeConfiguration(modeConf);
jeannie9809 0:338c50c9c8cd 202 // printf("Mode set\r\n");
jeannie9809 3:0da9235c9069 203 }
jeannie9809 3:0da9235c9069 204
jeannie9809 3:0da9235c9069 205 if (interruptStatus.bits.prox_int == 0x1) {
jeannie9809 0:338c50c9c8cd 206 // printf("Proximity Triggered, entered HR Mode.");
jeannie9809 3:0da9235c9069 207 }
jeannie9809 3:0da9235c9069 208
jeannie9809 3:0da9235c9069 209 if (interruptStatus.bits.ppg_rdy == 0x1) {
jeannie9809 0:338c50c9c8cd 210 // printf("PPG Ready.\r\n");
jeannie9809 3:0da9235c9069 211 mask_ppg = 1;
jeannie9809 3:0da9235c9069 212 }
jeannie9809 3:0da9235c9069 213
jeannie9809 3:0da9235c9069 214 if (interruptStatus.bits.a_full == 0x1) {
jeannie9809 0:338c50c9c8cd 215 // printf("FIFO Almost Full.\r\n");
jeannie9809 3:0da9235c9069 216 uint8_t data[FIFO_DATA_MAX];
jeannie9809 3:0da9235c9069 217 uint16_t readBytes = 0;
jeannie9809 3:0da9235c9069 218
jeannie9809 3:0da9235c9069 219 hr.readFIFO(MAX30101::OneLedChannel, data, readBytes);
jeannie9809 9:83dcb7382516 220 // printf("data length: %u \r\n",readBytes);
jeannie9809 3:0da9235c9069 221 //printf("data length: %u \r\n",data);
jeannie9809 3:0da9235c9069 222 for (uint16_t i = 0; i < readBytes; i += 3) {
jeannie9809 3:0da9235c9069 223 uint8_t sample[4] = {0};
jeannie9809 3:0da9235c9069 224 sample[0] = data[i + 2];
jeannie9809 3:0da9235c9069 225 sample[1] = data[i + 1];
jeannie9809 3:0da9235c9069 226 sample[2] = data[i];
jeannie9809 3:0da9235c9069 227
jeannie9809 3:0da9235c9069 228 num = *(uint32_t *) sample;
jeannie9809 9:83dcb7382516 229
jeannie9809 11:58a443cf3f7c 230 if (num < 0) {
jeannie9809 3:0da9235c9069 231 ppg_single_sample = 0;
jeannie9809 9:83dcb7382516 232 // printf("keep closer to your hand \r\n");
jeannie9809 3:0da9235c9069 233 } else {
jeannie9809 3:0da9235c9069 234
jeannie9809 3:0da9235c9069 235 //ppg_single_sample = 65;
jeannie9809 6:ff1c3560db84 236 ppg_single_sample = num;
jeannie9809 9:83dcb7382516 237 if(iter < num_samples && !ready) {
jeannie9809 9:83dcb7382516 238 ppg[iter] = num;
jeannie9809 9:83dcb7382516 239 // printf("%d \n", ppg[iter]);
jeannie9809 9:83dcb7382516 240 if(iter == num_samples-1)
jeannie9809 9:83dcb7382516 241 ready = true;
jeannie9809 9:83dcb7382516 242 }
jeannie9809 9:83dcb7382516 243
jeannie9809 9:83dcb7382516 244 // printf("%d ", ppg_single_sample); // I commented this out
jeannie9809 3:0da9235c9069 245 iter++;
jeannie9809 3:0da9235c9069 246 }
jeannie9809 9:83dcb7382516 247 // printf("%d; %d\r\n", iter, ppg[iter-1]);
jeannie9809 3:0da9235c9069 248
jeannie9809 3:0da9235c9069 249
jeannie9809 0:338c50c9c8cd 250 }
jeannie9809 0:338c50c9c8cd 251 }
jeannie9809 3:0da9235c9069 252
jeannie9809 3:0da9235c9069 253 interruptStatus.all = 0xFF;
jeannie9809 11:58a443cf3f7c 254
jeannie9809 3:0da9235c9069 255 if (mask_ppg == 1) {
jeannie9809 3:0da9235c9069 256 interruptStatus.bits.ppg_rdy = 0;
jeannie9809 3:0da9235c9069 257 }
jeannie9809 3:0da9235c9069 258 hr.enableInterrupts(interruptStatus);
jeannie9809 0:338c50c9c8cd 259 }
jeannie9809 4:94190624967a 260 /*
jeannie9809 4:94190624967a 261 for(int i = 0; i < num_samples; i++) {
jeannie9809 4:94190624967a 262 ppg[i] = temp_ppg[i];
jeannie9809 4:94190624967a 263 }
jeannie9809 4:94190624967a 264 */
jeannie9809 4:94190624967a 265 //ppg = temp_ppg;
jeannie9809 11:58a443cf3f7c 266
jeannie9809 0:338c50c9c8cd 267 }
jeannie9809 0:338c50c9c8cd 268
jeannie9809 3:0da9235c9069 269 void interruptHandler()
jeannie9809 3:0da9235c9069 270 {
jeannie9809 0:338c50c9c8cd 271 evqueue.call(interruptHandlerQueued);
jeannie9809 9:83dcb7382516 272 // interruptHandlerQueued();
jeannie9809 11:58a443cf3f7c 273 // printf("\nLezzgo\n");
jeannie9809 9:83dcb7382516 274 if(ready) {
jeannie9809 11:58a443cf3f7c 275 printf("\nStarting... ");
jeannie9809 11:58a443cf3f7c 276
jeannie9809 11:58a443cf3f7c 277 int i = 0;
jeannie9809 11:58a443cf3f7c 278 int j = 0;
jeannie9809 11:58a443cf3f7c 279
jeannie9809 11:58a443cf3f7c 280 double TIME[num_samples];
jeannie9809 11:58a443cf3f7c 281 for(int i = 0; i < num_samples; i++) {
jeannie9809 11:58a443cf3f7c 282 TIME[i] = (double)i*(5.0/(double)num_samples); // change to 30.0 later
jeannie9809 11:58a443cf3f7c 283 }
jeannie9809 11:58a443cf3f7c 284
jeannie9809 11:58a443cf3f7c 285 // moving average
jeannie9809 11:58a443cf3f7c 286 double movave[num_samples];
jeannie9809 11:58a443cf3f7c 287 int avecap = 25;
jeannie9809 11:58a443cf3f7c 288 for(i = 0; i < (avecap-1)/2; i++) {
jeannie9809 11:58a443cf3f7c 289 movave[i] = (double)ppg[0];
jeannie9809 11:58a443cf3f7c 290 for(j = 1; j < 1+(avecap-1)/2; j++) {
jeannie9809 11:58a443cf3f7c 291 movave[i] = movave[i] + (double)ppg[j];
jeannie9809 11:58a443cf3f7c 292 }
jeannie9809 11:58a443cf3f7c 293 movave[i] = (double)(movave[i]/(i+(avecap-1)/2-1));
jeannie9809 11:58a443cf3f7c 294 }
jeannie9809 11:58a443cf3f7c 295 for(i = (num_samples-(avecap-1)/2); i < num_samples; i++) {
jeannie9809 11:58a443cf3f7c 296 movave[i] = (double)ppg[i-(avecap-1)/2-1];
jeannie9809 11:58a443cf3f7c 297 for(j = (i-(avecap-1)/2); j < num_samples; j++) {
jeannie9809 11:58a443cf3f7c 298 movave[i] = movave[i] + (double)ppg[j];
jeannie9809 11:58a443cf3f7c 299 }
jeannie9809 11:58a443cf3f7c 300 movave[i] = movave[i]/(double)(num_samples-i+(avecap-1)/2);
jeannie9809 11:58a443cf3f7c 301 }
jeannie9809 11:58a443cf3f7c 302 for(i = (avecap-1)/2; i < (num_samples-(avecap-1)/2); i++) {
jeannie9809 11:58a443cf3f7c 303 movave[i] = (double)ppg[i-(avecap-1)/2-1];
jeannie9809 11:58a443cf3f7c 304 for(j = i-(avecap-1)/2; j < i+(avecap-1)/2; j++) {
jeannie9809 11:58a443cf3f7c 305 movave[i] = movave[i] + (double)ppg[j];
jeannie9809 11:58a443cf3f7c 306 }
jeannie9809 11:58a443cf3f7c 307 movave[i] = movave[i]/(double)avecap;
jeannie9809 4:94190624967a 308 }
jeannie9809 11:58a443cf3f7c 309
jeannie9809 11:58a443cf3f7c 310 // normalize ppg
jeannie9809 11:58a443cf3f7c 311 for(i = 0; i < num_samples; i++) {
jeannie9809 11:58a443cf3f7c 312 ppg[i] = ppg[i] - (int)movave[i];
jeannie9809 11:58a443cf3f7c 313 if(ppg[i] > 1000 || ppg[i] < -1000)
jeannie9809 11:58a443cf3f7c 314 ppg[i] = 0;
jeannie9809 11:58a443cf3f7c 315 }
jeannie9809 11:58a443cf3f7c 316
jeannie9809 11:58a443cf3f7c 317 // smoothing curve
jeannie9809 11:58a443cf3f7c 318 for(i = 1; i < num_samples; i++) {
jeannie9809 11:58a443cf3f7c 319 ppg[i] = ppg[i] + ppg[i-1];
jeannie9809 11:58a443cf3f7c 320 //printf("%d ", ppg[i]);
jeannie9809 4:94190624967a 321 }
jeannie9809 11:58a443cf3f7c 322
jeannie9809 11:58a443cf3f7c 323 // AMPD Algorithm
jeannie9809 11:58a443cf3f7c 324 const int kcap = 25;
jeannie9809 11:58a443cf3f7c 325 int m[kcap][num_samples];
jeannie9809 11:58a443cf3f7c 326 for(int k = 1; k <= kcap; k++) {
jeannie9809 11:58a443cf3f7c 327 for(i = 1; i < num_samples; i++) {
jeannie9809 11:58a443cf3f7c 328 if(i-1 < 0 || i-k-1 < 0 || i+k-1 >= num_samples)
jeannie9809 11:58a443cf3f7c 329 m[k-1][i] = 0;
jeannie9809 11:58a443cf3f7c 330 else if(ppg[i-1] > ppg[i-k-1] && ppg[i-1] > ppg[i+k-1])
jeannie9809 11:58a443cf3f7c 331 m[k-1][i] = 1;
jeannie9809 11:58a443cf3f7c 332 else
jeannie9809 11:58a443cf3f7c 333 m[k-1][i] = 0;
jeannie9809 11:58a443cf3f7c 334 }
jeannie9809 11:58a443cf3f7c 335 }
jeannie9809 11:58a443cf3f7c 336
jeannie9809 11:58a443cf3f7c 337 int max_mult[num_samples];
jeannie9809 11:58a443cf3f7c 338 for(i = 0; i < num_samples; i++) { // max_mult = m(1,:)';
jeannie9809 11:58a443cf3f7c 339 max_mult[i] = m[0][i];
jeannie9809 11:58a443cf3f7c 340 }
jeannie9809 11:58a443cf3f7c 341
jeannie9809 11:58a443cf3f7c 342 for(int k = 1; k < kcap; k++) {
jeannie9809 11:58a443cf3f7c 343 for(i = 0; i < num_samples; i++) {
jeannie9809 11:58a443cf3f7c 344 max_mult[i] = max_mult[i]*m[k][i];
jeannie9809 11:58a443cf3f7c 345 }
jeannie9809 11:58a443cf3f7c 346 }
jeannie9809 11:58a443cf3f7c 347
jeannie9809 11:58a443cf3f7c 348 int num_max = 0;
jeannie9809 11:58a443cf3f7c 349 // extract times that are max
jeannie9809 11:58a443cf3f7c 350 for(i = 0; i < num_samples; i++) {
jeannie9809 11:58a443cf3f7c 351 num_max = num_max + max_mult[i];
jeannie9809 4:94190624967a 352 }
jeannie9809 11:58a443cf3f7c 353
jeannie9809 11:58a443cf3f7c 354 // printf("num_max = %d ", num_max);
jeannie9809 11:58a443cf3f7c 355
jeannie9809 11:58a443cf3f7c 356 vector<double> time_of_max;
jeannie9809 11:58a443cf3f7c 357 vector<int> index_of_max;
jeannie9809 11:58a443cf3f7c 358 vector<int> max_points;
jeannie9809 11:58a443cf3f7c 359 for(i = 0; i < num_samples; i++) {
jeannie9809 11:58a443cf3f7c 360 if(max_mult[i] == 1) {
jeannie9809 11:58a443cf3f7c 361 time_of_max.push_back(TIME[i-1]);
jeannie9809 11:58a443cf3f7c 362 index_of_max.push_back(i-1);
jeannie9809 11:58a443cf3f7c 363 max_points.push_back(ppg[i-1]);
jeannie9809 11:58a443cf3f7c 364 }
jeannie9809 11:58a443cf3f7c 365 }
jeannie9809 11:58a443cf3f7c 366
jeannie9809 11:58a443cf3f7c 367 // calculating HRV
jeannie9809 11:58a443cf3f7c 368 vector<double> r;
jeannie9809 11:58a443cf3f7c 369 vector<int> index_r;
jeannie9809 11:58a443cf3f7c 370 double mean_inter_time = 0;
jeannie9809 11:58a443cf3f7c 371 for(i = 0; i < num_max-1; i++) {
jeannie9809 11:58a443cf3f7c 372 r.push_back(time_of_max.at(i+1)-time_of_max.at(i));
jeannie9809 11:58a443cf3f7c 373 index_r.push_back(index_of_max.at(i+1) - index_of_max.at(i));
jeannie9809 11:58a443cf3f7c 374 mean_inter_time = mean_inter_time + r.at(i);
jeannie9809 11:58a443cf3f7c 375 }
jeannie9809 11:58a443cf3f7c 376
jeannie9809 11:58a443cf3f7c 377 //printf("r: %.2f %.2f %.2f ", r.at(0), r.at(1), r.at(2));
jeannie9809 11:58a443cf3f7c 378 mean_inter_time = mean_inter_time/(double)(num_max-1);
jeannie9809 11:58a443cf3f7c 379
jeannie9809 11:58a443cf3f7c 380 // getting rid of outlier points in r
jeannie9809 11:58a443cf3f7c 381 for(i = 0; i < num_max-1; i++) {
jeannie9809 11:58a443cf3f7c 382 if(r.at(i) > mean_inter_time + 0.11)
jeannie9809 11:58a443cf3f7c 383 r.at(i) = mean_inter_time + 0.11;
jeannie9809 11:58a443cf3f7c 384 else if(r.at(i) < mean_inter_time - 0.11)
jeannie9809 11:58a443cf3f7c 385 r.at(i) = mean_inter_time - 0.11;
jeannie9809 11:58a443cf3f7c 386 }
jeannie9809 11:58a443cf3f7c 387
jeannie9809 11:58a443cf3f7c 388 // SDNN -- std of normal to normal R-R intervals
jeannie9809 11:58a443cf3f7c 389 mean_inter_time = 0;
jeannie9809 11:58a443cf3f7c 390 for(i = 0; i < num_max-1; i++) {
jeannie9809 11:58a443cf3f7c 391 mean_inter_time = mean_inter_time + r.at(i);
jeannie9809 5:a6b6d0e5a69f 392 }
jeannie9809 11:58a443cf3f7c 393 mean_inter_time = double(mean_inter_time/(num_max-1));
jeannie9809 11:58a443cf3f7c 394 double SDNN_doub = 0.0;
jeannie9809 11:58a443cf3f7c 395 for(i = 0; i < num_max-1; i++) {
jeannie9809 11:58a443cf3f7c 396 SDNN_doub = SDNN_doub + (r.at(i)-mean_inter_time)*(r.at(i)-mean_inter_time);
jeannie9809 11:58a443cf3f7c 397 }
jeannie9809 11:58a443cf3f7c 398 SDNN = (int)(sqrt(SDNN_doub/(num_max-1))*1000);
jeannie9809 11:58a443cf3f7c 399 printf("SDNN = %d ", SDNN);
jeannie9809 11:58a443cf3f7c 400
jeannie9809 11:58a443cf3f7c 401 // TIME TO CALCULATE HF/LF
jeannie9809 11:58a443cf3f7c 402 // FFT: use movave as fftppg
jeannie9809 5:a6b6d0e5a69f 403 for(i = 0; i < num_samples; i++) {
jeannie9809 11:58a443cf3f7c 404 double real = 0;
jeannie9809 11:58a443cf3f7c 405 double im = 0;
jeannie9809 11:58a443cf3f7c 406 double dum_ppg;
jeannie9809 11:58a443cf3f7c 407 for(j = 0; j < num_samples; j++) {
jeannie9809 11:58a443cf3f7c 408 dum_ppg = (double) ppg[j];
jeannie9809 11:58a443cf3f7c 409 real = real + dum_ppg * cos(2.0*M_PI*(double)(j*i)/(double)num_samples);
jeannie9809 11:58a443cf3f7c 410 im = im + dum_ppg * sin(2.0*M_PI*(double)(j*i)/(double)num_samples);
jeannie9809 11:58a443cf3f7c 411 }
jeannie9809 11:58a443cf3f7c 412 movave[i] = sqrt(real*real + im*im)/(double)num_samples;
jeannie9809 11:58a443cf3f7c 413 }
jeannie9809 11:58a443cf3f7c 414
jeannie9809 11:58a443cf3f7c 415
jeannie9809 11:58a443cf3f7c 416 // make frequency array: use TIME
jeannie9809 11:58a443cf3f7c 417 double sampling_freq = (double)(1/TIME[1]);
jeannie9809 11:58a443cf3f7c 418 for(i = 0; i < num_samples; i++) {
jeannie9809 11:58a443cf3f7c 419 TIME[i] = sampling_freq*(double)(i)/(double)(num_samples);
jeannie9809 5:a6b6d0e5a69f 420 }
jeannie9809 11:58a443cf3f7c 421
jeannie9809 11:58a443cf3f7c 422 double LF = 0.0;
jeannie9809 11:58a443cf3f7c 423 i = 0;
jeannie9809 11:58a443cf3f7c 424 while(TIME[i] < 0.15) {
jeannie9809 11:58a443cf3f7c 425 LF = LF + movave[i];
jeannie9809 11:58a443cf3f7c 426 i++;
jeannie9809 11:58a443cf3f7c 427 }
jeannie9809 11:58a443cf3f7c 428
jeannie9809 11:58a443cf3f7c 429 double HF = 0.0;
jeannie9809 11:58a443cf3f7c 430 while(TIME[i] < 0.4) {
jeannie9809 11:58a443cf3f7c 431 HF = HF + movave[i];
jeannie9809 11:58a443cf3f7c 432 i++;
jeannie9809 11:58a443cf3f7c 433 }
jeannie9809 11:58a443cf3f7c 434 HF_LF = HF/LF;
jeannie9809 11:58a443cf3f7c 435 printf("HF/LF = %.2f \n", HF_LF);
jeannie9809 11:58a443cf3f7c 436
jeannie9809 14:0258b126d726 437 if(SDNN_n < 1) {
jeannie9809 12:95d141421e18 438 SDNN_n = SDNN;
jeannie9809 12:95d141421e18 439 HF_LF_n = HF_LF;
jeannie9809 12:95d141421e18 440 valence_arousal = 0;
jeannie9809 12:95d141421e18 441 }
jeannie9809 12:95d141421e18 442 else {
jeannie9809 14:0258b126d726 443 // mapping SDNN, HF/LF to valence, arousal
jeannie9809 14:0258b126d726 444 int comp_sdnn = SDNN-SDNN_n;
jeannie9809 14:0258b126d726 445 if(comp_sdnn > 20)
jeannie9809 15:5d291cd60879 446 valence_arousal = 5;
jeannie9809 14:0258b126d726 447 else if(comp_sdnn > 5)
jeannie9809 15:5d291cd60879 448 valence_arousal = 4;
jeannie9809 14:0258b126d726 449 else if(comp_sdnn > -5)
jeannie9809 15:5d291cd60879 450 valence_arousal = 3;
jeannie9809 14:0258b126d726 451 else if(comp_sdnn > -20)
jeannie9809 15:5d291cd60879 452 valence_arousal = 2;
jeannie9809 14:0258b126d726 453 else
jeannie9809 15:5d291cd60879 454 valence_arousal = 1;
jeannie9809 14:0258b126d726 455
jeannie9809 14:0258b126d726 456 double comp_hf_lf = HF_LF/HF_LF_n;
jeannie9809 14:0258b126d726 457 if(comp_hf_lf > 5.0)
jeannie9809 15:5d291cd60879 458 valence_arousal += 50;
jeannie9809 14:0258b126d726 459 else if(comp_hf_lf > 1.5)
jeannie9809 15:5d291cd60879 460 valence_arousal += 40;
jeannie9809 14:0258b126d726 461 else if(comp_hf_lf > 0.9)
jeannie9809 15:5d291cd60879 462 valence_arousal += 30;
jeannie9809 14:0258b126d726 463 else if(comp_hf_lf > 0.7)
jeannie9809 15:5d291cd60879 464 valence_arousal += 20;
jeannie9809 14:0258b126d726 465 else
jeannie9809 15:5d291cd60879 466 valence_arousal += 10;
jeannie9809 14:0258b126d726 467 printf("valence_arousal = %d ", valence_arousal);
jeannie9809 14:0258b126d726 468 ready_to_send = true;
jeannie9809 12:95d141421e18 469 }
jeannie9809 12:95d141421e18 470
jeannie9809 11:58a443cf3f7c 471 ready = false; // last line
jeannie9809 11:58a443cf3f7c 472
jeannie9809 5:a6b6d0e5a69f 473 }
jeannie9809 11:58a443cf3f7c 474
jeannie9809 0:338c50c9c8cd 475 }
jeannie9809 0:338c50c9c8cd 476
jeannie9809 0:338c50c9c8cd 477 // main() runs in its own thread in the OS
jeannie9809 3:0da9235c9069 478 int main()
jeannie9809 3:0da9235c9069 479 {
jeannie9809 0:338c50c9c8cd 480 // printf("Hello world.\r\n");
jeannie9809 4:94190624967a 481
jeannie9809 0:338c50c9c8cd 482 t.start(callback(&evqueue, &EventQueue::dispatch_forever));
jeannie9809 0:338c50c9c8cd 483 kw40z_device.attach_buttonLeft(&ButtonLeft);
jeannie9809 0:338c50c9c8cd 484 kw40z_device.attach_buttonRight(&ButtonRight);
jeannie9809 3:0da9235c9069 485
jeannie9809 0:338c50c9c8cd 486 pwr1v8 = 1;
jeannie9809 0:338c50c9c8cd 487 pwr3v3b = 1;
jeannie9809 0:338c50c9c8cd 488 pwr15v = 0;
jeannie9809 3:0da9235c9069 489
jeannie9809 0:338c50c9c8cd 490 maximInterrupt.fall(interruptHandler);
jeannie9809 0:338c50c9c8cd 491 maximInterrupt.enable_irq();
jeannie9809 3:0da9235c9069 492
jeannie9809 0:338c50c9c8cd 493 MAX30101::InterruptBitField_u interruptStatus;
jeannie9809 0:338c50c9c8cd 494 interruptStatus.all = 0xFF;
jeannie9809 0:338c50c9c8cd 495 hr.enableInterrupts(interruptStatus);
jeannie9809 3:0da9235c9069 496
jeannie9809 14:0258b126d726 497
jeannie9809 0:338c50c9c8cd 498 oled_text_properties_t textProperties = {0};
jeannie9809 3:0da9235c9069 499 oled.GetTextProperties(&textProperties);
jeannie9809 0:338c50c9c8cd 500 /* Turn on the backlight of the OLED Display */
jeannie9809 0:338c50c9c8cd 501 oled.DimScreenON();
jeannie9809 3:0da9235c9069 502
jeannie9809 3:0da9235c9069 503 /* Fills the screen with solid black */
jeannie9809 0:338c50c9c8cd 504 oled.FillScreen(COLOR_BLACK);
jeannie9809 1:eabf219849ab 505 strcpy((char *) text, "Raw PPG:");
jeannie9809 0:338c50c9c8cd 506 oled.Label((uint8_t *)text,7,0);
jeannie9809 3:0da9235c9069 507
jeannie9809 11:58a443cf3f7c 508 strcpy((char *) text, " LOFI");
jeannie9809 0:338c50c9c8cd 509 oled.Label((uint8_t *)text,7,40);
jeannie9809 0:338c50c9c8cd 510 //dynamic text setup
jeannie9809 0:338c50c9c8cd 511 textProperties.fontColor = COLOR_WHITE;
jeannie9809 0:338c50c9c8cd 512 textProperties.alignParam = OLED_TEXT_ALIGN_RIGHT;
jeannie9809 3:0da9235c9069 513 oled.SetTextProperties(&textProperties);
jeannie9809 3:0da9235c9069 514
jeannie9809 0:338c50c9c8cd 515 txThread.start(txTask);
jeannie9809 11:58a443cf3f7c 516
jeannie9809 12:95d141421e18 517
jeannie9809 0:338c50c9c8cd 518 while (true) {
jeannie9809 3:0da9235c9069 519
jeannie9809 11:58a443cf3f7c 520 // Format the time reading
jeannie9809 1:eabf219849ab 521 sprintf(text,"%d",ppg_single_sample);
jeannie9809 0:338c50c9c8cd 522 oled.TextBox((uint8_t *)text,55,15,35,15); //Increase textbox for more digits
jeannie9809 11:58a443cf3f7c 523
jeannie9809 11:58a443cf3f7c 524 /*
jeannie9809 11:58a443cf3f7c 525 // Display time reading in 35px by 15px textbox at(x=55, y=40)
jeannie9809 3:0da9235c9069 526 if (ppg_single_sample > 45) {
jeannie9809 1:eabf219849ab 527 sprintf(text,"%d; %.2f",SDNN, HF_LF);
jeannie9809 3:0da9235c9069 528
jeannie9809 11:58a443cf3f7c 529 // Display time reading in 35px by 15px textbox at(x=55, y=40)
jeannie9809 0:338c50c9c8cd 530 oled.TextBox((uint8_t *)text,55,55,35,15); //Increase textbox for more digits
jeannie9809 3:0da9235c9069 531 } else {
jeannie9809 0:338c50c9c8cd 532 sprintf(text,"wait HR");
jeannie9809 3:0da9235c9069 533
jeannie9809 11:58a443cf3f7c 534 // Display time reading in 35px by 15px textbox at(x=55, y=40)
jeannie9809 0:338c50c9c8cd 535 oled.TextBox((uint8_t *)text,55,55,35,15);
jeannie9809 11:58a443cf3f7c 536 }*/
jeannie9809 0:338c50c9c8cd 537 Thread::wait(1000);
jeannie9809 3:0da9235c9069 538 }
jeannie9809 0:338c50c9c8cd 539 return 0;
jeannie9809 0:338c50c9c8cd 540 }
jeannie9809 0:338c50c9c8cd 541