Jeannie Hur / Working_HRV

HRV -> Mood

Dependencies:   MAX30101 Hexi_KW40Z Hexi_OLED_SSD1351

8cee5929f4d8/main.cpp@15:5d291cd60879, 2019-03-17 (annotated)

Committer:
jeannie9809
Date:
Sun Mar 17 07:36:26 2019 +0000
Revision:
15:5d291cd60879
Parent:
14:0258b126d726
Child:
16:8b4f1abd8acc
switch valence arousal in mapping coordinates

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