Jeannie Hur / Working_HRV

HRV -> Mood

Dependencies:   MAX30101 Hexi_KW40Z Hexi_OLED_SSD1351

8cee5929f4d8/main.cpp@7:7ae14b3b00d1, 2019-03-16 (annotated)

Committer:
jeannie9809
Date:
Sat Mar 16 04:19:57 2019 +0000
Revision:
7:7ae14b3b00d1
Parent:
6:ff1c3560db84
Child:
8:f5bd13e53c38
before SDNN

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 0:338c50c9c8cd 7 #include <math.h>
jeannie9809 6:ff1c3560db84 8 #include <vector>
jeannie9809 6:ff1c3560db84 9 using namespace std;
jeannie9809 0:338c50c9c8cd 10 #define FIFO_DATA_MAX 288
jeannie9809 0:338c50c9c8cd 11 void UpdateSensorData(void);
jeannie9809 0:338c50c9c8cd 12 void StartHaptic(void);
jeannie9809 0:338c50c9c8cd 13 void StopHaptic(void const *n);
jeannie9809 0:338c50c9c8cd 14 void txTask(void);
jeannie9809 0:338c50c9c8cd 15
jeannie9809 0:338c50c9c8cd 16 DigitalOut pwr1v8(PTA29);
jeannie9809 0:338c50c9c8cd 17 DigitalOut pwr3v3b(PTC13);
jeannie9809 0:338c50c9c8cd 18 DigitalOut pwr15v(PTB12);
jeannie9809 0:338c50c9c8cd 19 I2C i2c0(PTB1, PTB0);
jeannie9809 0:338c50c9c8cd 20 InterruptIn maximInterrupt(PTB18);
jeannie9809 0:338c50c9c8cd 21 Serial pc(USBTX, USBRX);
jeannie9809 0:338c50c9c8cd 22 SSD1351 oled(PTB22,PTB21,PTC13,PTB20,PTE6, PTD15);
jeannie9809 0:338c50c9c8cd 23 KW40Z kw40z_device(PTE24, PTE25);
jeannie9809 0:338c50c9c8cd 24 DigitalOut haptic(PTB9);
jeannie9809 0:338c50c9c8cd 25 EventQueue evqueue(32 * EVENTS_EVENT_SIZE);
jeannie9809 0:338c50c9c8cd 26 Thread t;
jeannie9809 0:338c50c9c8cd 27 /* Define timer for haptic feedback */
jeannie9809 0:338c50c9c8cd 28 RtosTimer hapticTimer(StopHaptic, osTimerOnce);
jeannie9809 0:338c50c9c8cd 29
jeannie9809 3:0da9235c9069 30 /*Create a Thread to handle sending BLE Sensor Data */
jeannie9809 0:338c50c9c8cd 31 Thread txThread;
jeannie9809 0:338c50c9c8cd 32 MAX30101 hr(i2c0);
jeannie9809 1:eabf219849ab 33 int ppg_single_sample;
jeannie9809 0:338c50c9c8cd 34 int mask_ppg = 0;
jeannie9809 0:338c50c9c8cd 35 uint32_t count = 0;
jeannie9809 0:338c50c9c8cd 36 uint32_t num;
jeannie9809 0:338c50c9c8cd 37 uint8_t testsignal = 60;
jeannie9809 0:338c50c9c8cd 38
jeannie9809 2:3389bdfd9afa 39 // I added this
jeannie9809 4:94190624967a 40 const int num_samples = 1200; // for 30 sec
jeannie9809 4:94190624967a 41 double TIME[num_samples];
jeannie9809 0:338c50c9c8cd 42 int ppg[num_samples];
jeannie9809 1:eabf219849ab 43 int SDNN_n, SDNN;
jeannie9809 0:338c50c9c8cd 44 bool first_sample_set = true;
jeannie9809 1:eabf219849ab 45 double arousal, valence, HF_LF, HF_LF_n;
jeannie9809 0:338c50c9c8cd 46
jeannie9809 3:0da9235c9069 47 void StartHaptic(void)
jeannie9809 3:0da9235c9069 48 {
jeannie9809 0:338c50c9c8cd 49 hapticTimer.start(50);
jeannie9809 0:338c50c9c8cd 50 haptic = 1;
jeannie9809 0:338c50c9c8cd 51 }
jeannie9809 0:338c50c9c8cd 52 void ButtonRight(void)
jeannie9809 0:338c50c9c8cd 53 {
jeannie9809 0:338c50c9c8cd 54 StartHaptic();
jeannie9809 0:338c50c9c8cd 55 kw40z_device.ToggleAdvertisementMode();
jeannie9809 0:338c50c9c8cd 56 }
jeannie9809 0:338c50c9c8cd 57
jeannie9809 0:338c50c9c8cd 58 void ButtonLeft(void)
jeannie9809 0:338c50c9c8cd 59 {
jeannie9809 0:338c50c9c8cd 60 StartHaptic();
jeannie9809 0:338c50c9c8cd 61 kw40z_device.ToggleAdvertisementMode();
jeannie9809 0:338c50c9c8cd 62 }
jeannie9809 0:338c50c9c8cd 63
jeannie9809 3:0da9235c9069 64 void StopHaptic(void const *n)
jeannie9809 3:0da9235c9069 65 {
jeannie9809 0:338c50c9c8cd 66 haptic = 0;
jeannie9809 0:338c50c9c8cd 67 hapticTimer.stop();
jeannie9809 0:338c50c9c8cd 68 }
jeannie9809 3:0da9235c9069 69 void txTask(void)
jeannie9809 3:0da9235c9069 70 {
jeannie9809 3:0da9235c9069 71
jeannie9809 3:0da9235c9069 72 while (true) {
jeannie9809 0:338c50c9c8cd 73 UpdateSensorData();
jeannie9809 3:0da9235c9069 74
jeannie9809 0:338c50c9c8cd 75 /*Notify Hexiwear App that it is running Sensor Tag mode*/
jeannie9809 0:338c50c9c8cd 76 kw40z_device.SendSetApplicationMode(GUI_CURRENT_APP_SENSOR_TAG);
jeannie9809 0:338c50c9c8cd 77 //send heartrate
jeannie9809 3:0da9235c9069 78 kw40z_device.SendHeartRate(testsignal);
jeannie9809 0:338c50c9c8cd 79 /*The following is sending dummy data over BLE. Replace with real data*/
jeannie9809 3:0da9235c9069 80
jeannie9809 3:0da9235c9069 81 /*Send Battery Level for 20%
jeannie9809 0:338c50c9c8cd 82 kw40z_device.SendBatteryLevel(battery);
jeannie9809 3:0da9235c9069 83
jeannie9809 3:0da9235c9069 84 Send Ambient Light Level at 50%
jeannie9809 0:338c50c9c8cd 85 kw40z_device.SendAmbientLight(light);*/
jeannie9809 3:0da9235c9069 86
jeannie9809 0:338c50c9c8cd 87 /*Send Humidity at 90% */
jeannie9809 0:338c50c9c8cd 88 //kw40z_device.SendHumidity(humidity);
jeannie9809 3:0da9235c9069 89
jeannie9809 3:0da9235c9069 90 /*Send Temperature at 25 degrees Celsius
jeannie9809 0:338c50c9c8cd 91 kw40z_device.SendTemperature(temperature);
jeannie9809 0:338c50c9c8cd 92
jeannie9809 3:0da9235c9069 93 /*Send Pressure at 100kPA */
jeannie9809 0:338c50c9c8cd 94 //kw40z_device.SendPressure(pressure);
jeannie9809 3:0da9235c9069 95
jeannie9809 3:0da9235c9069 96 /*Send Mag,Accel,Gyro Data.
jeannie9809 0:338c50c9c8cd 97 kw40z_device.SendGyro(x,y,z);
jeannie9809 0:338c50c9c8cd 98 kw40z_device.SendAccel(z,x,y);
jeannie9809 0:338c50c9c8cd 99 kw40z_device.SendMag(y,z,x);*/
jeannie9809 0:338c50c9c8cd 100
jeannie9809 3:0da9235c9069 101 Thread::wait(1000);
jeannie9809 0:338c50c9c8cd 102 }
jeannie9809 0:338c50c9c8cd 103 }
jeannie9809 0:338c50c9c8cd 104 void UpdateSensorData(void)
jeannie9809 3:0da9235c9069 105 {
jeannie9809 3:0da9235c9069 106 testsignal+=1;
jeannie9809 0:338c50c9c8cd 107 /*battery -= 5;
jeannie9809 0:338c50c9c8cd 108 if(battery < 5) battery = 100;
jeannie9809 3:0da9235c9069 109
jeannie9809 0:338c50c9c8cd 110 light += 20;
jeannie9809 0:338c50c9c8cd 111 if(light > 100) light = 0;
jeannie9809 3:0da9235c9069 112
jeannie9809 0:338c50c9c8cd 113 humidity += 500;
jeannie9809 0:338c50c9c8cd 114 if(humidity > 8000) humidity = 2000;
jeannie9809 3:0da9235c9069 115
jeannie9809 0:338c50c9c8cd 116 temperature -= 200;
jeannie9809 0:338c50c9c8cd 117 if(temperature < 200) temperature = 4200;
jeannie9809 3:0da9235c9069 118
jeannie9809 0:338c50c9c8cd 119 pressure += 300;
jeannie9809 0:338c50c9c8cd 120 if(pressure > 10300) pressure = 7500;
jeannie9809 3:0da9235c9069 121
jeannie9809 0:338c50c9c8cd 122 x += 1400;
jeannie9809 0:338c50c9c8cd 123 y -= 2300;
jeannie9809 0:338c50c9c8cd 124 z += 1700;*/
jeannie9809 0:338c50c9c8cd 125 }
jeannie9809 0:338c50c9c8cd 126
jeannie9809 3:0da9235c9069 127 void interruptHandlerQueued()
jeannie9809 3:0da9235c9069 128 {
jeannie9809 4:94190624967a 129 // int temp_ppg[num_samples];
jeannie9809 3:0da9235c9069 130 for(int iter = 0; iter < num_samples; iter+=0) {
jeannie9809 0:338c50c9c8cd 131
jeannie9809 3:0da9235c9069 132 MAX30101::InterruptBitField_u interruptStatus;
jeannie9809 3:0da9235c9069 133 hr.getInterruptStatus(interruptStatus);
jeannie9809 3:0da9235c9069 134 // printf("Interrupt Status: 0x%02x\r\n", interruptStatus.all);
jeannie9809 3:0da9235c9069 135
jeannie9809 3:0da9235c9069 136 if (interruptStatus.bits.pwr_rdy == 0x1) {
jeannie9809 3:0da9235c9069 137 // printf("Powered on\r\n");
jeannie9809 3:0da9235c9069 138
jeannie9809 3:0da9235c9069 139 // Soft reset
jeannie9809 3:0da9235c9069 140 MAX30101::ModeConfiguration_u modeConf;
jeannie9809 3:0da9235c9069 141 modeConf.all = 0;
jeannie9809 3:0da9235c9069 142 modeConf.bits.reset = 1;
jeannie9809 3:0da9235c9069 143 hr.setModeConfiguration(modeConf);
jeannie9809 3:0da9235c9069 144 wait(0.01);
jeannie9809 3:0da9235c9069 145
jeannie9809 3:0da9235c9069 146 // Configure FIFO
jeannie9809 3:0da9235c9069 147 MAX30101::FIFO_Configuration_u fifoConf;
jeannie9809 3:0da9235c9069 148 hr.getFIFOConfiguration(fifoConf);
jeannie9809 0:338c50c9c8cd 149 // pc.printf("FIFO Configuration: 0x%02x\r\n", fifoConf.all);
jeannie9809 3:0da9235c9069 150
jeannie9809 3:0da9235c9069 151 // Set LED power
jeannie9809 3:0da9235c9069 152 hr.setLEDPulseAmplitude(MAX30101::LED1_PA, 0x0C);
jeannie9809 3:0da9235c9069 153 hr.setLEDPulseAmplitude(MAX30101::ProxModeLED_PA, 0x19);
jeannie9809 0:338c50c9c8cd 154 // pc.printf("LED set\r\n");
jeannie9809 3:0da9235c9069 155
jeannie9809 3:0da9235c9069 156 MAX30101::SpO2Configuration_u spo2Conf;
jeannie9809 3:0da9235c9069 157 hr.getSpO2Configuration(spo2Conf);
jeannie9809 3:0da9235c9069 158 spo2Conf.bits.led_pw = MAX30101::PW_1;
jeannie9809 3:0da9235c9069 159 spo2Conf.bits.spo2_sr = MAX30101::SR_100_Hz;
jeannie9809 3:0da9235c9069 160 hr.setSpO2Configuration(spo2Conf);
jeannie9809 3:0da9235c9069 161 hr.getSpO2Configuration(spo2Conf);
jeannie9809 0:338c50c9c8cd 162 // pc.printf("SpO2 Configuration: 0x%02x\r\n", spo2Conf.all);
jeannie9809 3:0da9235c9069 163
jeannie9809 3:0da9235c9069 164 // Proximity settings
jeannie9809 3:0da9235c9069 165 hr.setProxIntThreshold(0x14);
jeannie9809 3:0da9235c9069 166
jeannie9809 3:0da9235c9069 167 // Enable HR mode
jeannie9809 3:0da9235c9069 168 modeConf.all = 0;
jeannie9809 3:0da9235c9069 169 modeConf.bits.mode = MAX30101::HeartRateMode;
jeannie9809 3:0da9235c9069 170 hr.setModeConfiguration(modeConf);
jeannie9809 0:338c50c9c8cd 171 // printf("Mode set\r\n");
jeannie9809 3:0da9235c9069 172 }
jeannie9809 3:0da9235c9069 173
jeannie9809 3:0da9235c9069 174 if (interruptStatus.bits.prox_int == 0x1) {
jeannie9809 0:338c50c9c8cd 175 // printf("Proximity Triggered, entered HR Mode.");
jeannie9809 3:0da9235c9069 176 }
jeannie9809 3:0da9235c9069 177
jeannie9809 3:0da9235c9069 178 if (interruptStatus.bits.ppg_rdy == 0x1) {
jeannie9809 0:338c50c9c8cd 179 // printf("PPG Ready.\r\n");
jeannie9809 3:0da9235c9069 180 mask_ppg = 1;
jeannie9809 3:0da9235c9069 181 }
jeannie9809 3:0da9235c9069 182
jeannie9809 3:0da9235c9069 183 if (interruptStatus.bits.a_full == 0x1) {
jeannie9809 0:338c50c9c8cd 184 // printf("FIFO Almost Full.\r\n");
jeannie9809 3:0da9235c9069 185 uint8_t data[FIFO_DATA_MAX];
jeannie9809 3:0da9235c9069 186 uint16_t readBytes = 0;
jeannie9809 3:0da9235c9069 187
jeannie9809 3:0da9235c9069 188 hr.readFIFO(MAX30101::OneLedChannel, data, readBytes);
jeannie9809 3:0da9235c9069 189 printf("data length: %u \r\n",readBytes);
jeannie9809 3:0da9235c9069 190 //printf("data length: %u \r\n",data);
jeannie9809 3:0da9235c9069 191 for (uint16_t i = 0; i < readBytes; i += 3) {
jeannie9809 3:0da9235c9069 192 uint8_t sample[4] = {0};
jeannie9809 3:0da9235c9069 193 sample[0] = data[i + 2];
jeannie9809 3:0da9235c9069 194 sample[1] = data[i + 1];
jeannie9809 3:0da9235c9069 195 sample[2] = data[i];
jeannie9809 3:0da9235c9069 196
jeannie9809 3:0da9235c9069 197 num = *(uint32_t *) sample;
jeannie9809 3:0da9235c9069 198 if (num < 310000) {
jeannie9809 3:0da9235c9069 199 ppg_single_sample = 0;
jeannie9809 3:0da9235c9069 200 printf("keep closer to your hand \r\n");
jeannie9809 3:0da9235c9069 201 } else {
jeannie9809 3:0da9235c9069 202
jeannie9809 3:0da9235c9069 203 //ppg_single_sample = 65;
jeannie9809 6:ff1c3560db84 204 ppg_single_sample = num;
jeannie9809 3:0da9235c9069 205 if(iter < num_samples)
jeannie9809 3:0da9235c9069 206 ppg[iter] = num;
jeannie9809 3:0da9235c9069 207 // printf("%d\r\n", ppg_single_sample); // I commented this out
jeannie9809 3:0da9235c9069 208 iter++;
jeannie9809 3:0da9235c9069 209 }
jeannie9809 4:94190624967a 210 printf("%d; %d\r\n", iter, ppg[iter-1]);
jeannie9809 3:0da9235c9069 211
jeannie9809 3:0da9235c9069 212
jeannie9809 0:338c50c9c8cd 213 }
jeannie9809 0:338c50c9c8cd 214 }
jeannie9809 3:0da9235c9069 215
jeannie9809 3:0da9235c9069 216 interruptStatus.all = 0xFF;
jeannie9809 4:94190624967a 217
jeannie9809 3:0da9235c9069 218 if (mask_ppg == 1) {
jeannie9809 3:0da9235c9069 219 interruptStatus.bits.ppg_rdy = 0;
jeannie9809 3:0da9235c9069 220 }
jeannie9809 3:0da9235c9069 221 hr.enableInterrupts(interruptStatus);
jeannie9809 0:338c50c9c8cd 222 }
jeannie9809 4:94190624967a 223 /*
jeannie9809 4:94190624967a 224 for(int i = 0; i < num_samples; i++) {
jeannie9809 4:94190624967a 225 ppg[i] = temp_ppg[i];
jeannie9809 4:94190624967a 226 }
jeannie9809 4:94190624967a 227 */
jeannie9809 4:94190624967a 228 //ppg = temp_ppg;
jeannie9809 0:338c50c9c8cd 229 }
jeannie9809 0:338c50c9c8cd 230
jeannie9809 3:0da9235c9069 231 void interruptHandler()
jeannie9809 3:0da9235c9069 232 {
jeannie9809 0:338c50c9c8cd 233 evqueue.call(interruptHandlerQueued);
jeannie9809 3:0da9235c9069 234
jeannie9809 4:94190624967a 235 // moving average
jeannie9809 4:94190624967a 236 double movave[num_samples];
jeannie9809 4:94190624967a 237 int avecap = 25;
jeannie9809 4:94190624967a 238 int i = 0;
jeannie9809 4:94190624967a 239 int j = 0;
jeannie9809 4:94190624967a 240 for(i = 0; i < (avecap-1)/2; i++) {
jeannie9809 4:94190624967a 241 movave[i] = ppg[0];
jeannie9809 4:94190624967a 242 for(j = 1; j < 1+(avecap-1)/2; j++) {
jeannie9809 4:94190624967a 243 movave[i] = movave[i] + ppg[j];
jeannie9809 4:94190624967a 244 }
jeannie9809 4:94190624967a 245 movave[i] = (double)(movave[i]/(i+(avecap-1)/2-1));
jeannie9809 4:94190624967a 246 }
jeannie9809 4:94190624967a 247 for(i = (num_samples-(avecap-1)/2); i < num_samples; i++) {
jeannie9809 4:94190624967a 248 movave[i] = ppg[i-(avecap-1)/2-1];
jeannie9809 4:94190624967a 249 for(j = (i-(avecap-1)/2); j < num_samples; j++) {
jeannie9809 4:94190624967a 250 movave[i] = movave[i] + ppg[j];
jeannie9809 4:94190624967a 251 }
jeannie9809 4:94190624967a 252 movave[i] = (double)(movave[i]/(num_samples-i+(avecap-1)/2));
jeannie9809 4:94190624967a 253 }
jeannie9809 4:94190624967a 254 for(i = (avecap-1)/2; i < (num_samples-(avecap-1)/2); i++) {
jeannie9809 4:94190624967a 255 movave[i] = ppg[i-(avecap-1)/2-1];
jeannie9809 4:94190624967a 256 for(j = i-(avecap-1)/2; j < i+(avecap-1)/2; j++) {
jeannie9809 4:94190624967a 257 movave[i] = movave[i] + ppg[j];
jeannie9809 4:94190624967a 258 }
jeannie9809 4:94190624967a 259 movave[i] = (double)(movave[i]/avecap);
jeannie9809 4:94190624967a 260 }
jeannie9809 4:94190624967a 261 // normalize ppg
jeannie9809 4:94190624967a 262 for(i = 0; i < num_samples; i++) {
jeannie9809 4:94190624967a 263 ppg[i] = ppg[i] - movave[i];
jeannie9809 4:94190624967a 264 }
jeannie9809 5:a6b6d0e5a69f 265
jeannie9809 5:a6b6d0e5a69f 266 // smoothing curve
jeannie9809 5:a6b6d0e5a69f 267 for(i = 1; i < num_samples; i++) {
jeannie9809 5:a6b6d0e5a69f 268 ppg[i] = ppg[i] + ppg[i-1];
jeannie9809 5:a6b6d0e5a69f 269 }
jeannie9809 5:a6b6d0e5a69f 270
jeannie9809 5:a6b6d0e5a69f 271 // AMPD Algorithm
jeannie9809 5:a6b6d0e5a69f 272 const int kcap = 25;
jeannie9809 5:a6b6d0e5a69f 273 int m[kcap][num_samples];
jeannie9809 5:a6b6d0e5a69f 274 for(int k = 0; k < kcap; k++) {
jeannie9809 5:a6b6d0e5a69f 275 for(i = 1; i < num_samples; i++) {
jeannie9809 5:a6b6d0e5a69f 276 if(i-1 < 0 || i-k-1 < 0 || i+k-1 >= num_samples)
jeannie9809 5:a6b6d0e5a69f 277 m[k][i] = 0;
jeannie9809 5:a6b6d0e5a69f 278 else if(ppg[i-1] > ppg[i-k-1] && ppg[i-1] > ppg[i+k-1])
jeannie9809 5:a6b6d0e5a69f 279 m[k][i] = 1;
jeannie9809 5:a6b6d0e5a69f 280 else
jeannie9809 5:a6b6d0e5a69f 281 m[k][i] = 0;
jeannie9809 5:a6b6d0e5a69f 282 }
jeannie9809 5:a6b6d0e5a69f 283 }
jeannie9809 5:a6b6d0e5a69f 284 int max_mult[num_samples];
jeannie9809 5:a6b6d0e5a69f 285 for(i = 0; i < num_samples; i++) { // max_mult = m(1,:)';
jeannie9809 5:a6b6d0e5a69f 286 max_mult[i] = m[0][i];
jeannie9809 5:a6b6d0e5a69f 287 }
jeannie9809 5:a6b6d0e5a69f 288 for(int k = 1; k < kcap; k++) {
jeannie9809 5:a6b6d0e5a69f 289 for(i = 0; i < num_samples; i++) {
jeannie9809 5:a6b6d0e5a69f 290 max_mult[i] = max_mult[i]*m[k][i];
jeannie9809 5:a6b6d0e5a69f 291 }
jeannie9809 5:a6b6d0e5a69f 292 }
jeannie9809 5:a6b6d0e5a69f 293
jeannie9809 6:ff1c3560db84 294 // extract times that are max
jeannie9809 6:ff1c3560db84 295 int num_max = 0;
jeannie9809 6:ff1c3560db84 296 for(i = 0; i < num_samples; i++) {
jeannie9809 6:ff1c3560db84 297 num_max = max_mult[i];
jeannie9809 6:ff1c3560db84 298 }
jeannie9809 6:ff1c3560db84 299 vector<double> time_of_max;
jeannie9809 6:ff1c3560db84 300 vector<int> index_of_max;
jeannie9809 6:ff1c3560db84 301 vector<int> max_points;
jeannie9809 6:ff1c3560db84 302 for(i = 0; i < num_samples; i++) {
jeannie9809 6:ff1c3560db84 303 if(max_mult[i] == 1) {
jeannie9809 6:ff1c3560db84 304 time_of_max.push_back(TIME[i-1]);
jeannie9809 6:ff1c3560db84 305 index_of_max.push_back(i-1);
jeannie9809 6:ff1c3560db84 306 max_points.push_back(ppg[i-1]);
jeannie9809 6:ff1c3560db84 307 }
jeannie9809 6:ff1c3560db84 308 }
jeannie9809 7:7ae14b3b00d1 309
jeannie9809 7:7ae14b3b00d1 310 // calculating HRV
jeannie9809 7:7ae14b3b00d1 311 vector<double> r;
jeannie9809 7:7ae14b3b00d1 312 vector<int> index_r;
jeannie9809 7:7ae14b3b00d1 313 double mean_inter_time = 0;
jeannie9809 7:7ae14b3b00d1 314 for(i = 0; i < num_max-1; i++) {
jeannie9809 7:7ae14b3b00d1 315 r.push_back(time_of_max.at(i+1)-time_of_max.at(i));
jeannie9809 7:7ae14b3b00d1 316 index_r.push_back(index_of_max.at(i+1) - index_of_max.at(i));
jeannie9809 7:7ae14b3b00d1 317 mean_inter_time = mean_inter_time + r.at(i);
jeannie9809 7:7ae14b3b00d1 318 }
jeannie9809 7:7ae14b3b00d1 319 mean_inter_time = (double)(mean_inter_time/(num_max-1));
jeannie9809 7:7ae14b3b00d1 320
jeannie9809 7:7ae14b3b00d1 321 // getting rid of outlier points in r
jeannie9809 7:7ae14b3b00d1 322 for(i = 0; i < num_max-1; i++) {
jeannie9809 7:7ae14b3b00d1 323 if(r.at(i) > mean_inter_time + 0.11)
jeannie9809 7:7ae14b3b00d1 324 r.at(i) = mean_inter_time + 0.11;
jeannie9809 7:7ae14b3b00d1 325 else if(r.at(i) < mean_inter_time - 0.11)
jeannie9809 7:7ae14b3b00d1 326 r.at(i) = mean_inter_time - 0.11;
jeannie9809 7:7ae14b3b00d1 327 }
jeannie9809 7:7ae14b3b00d1 328
jeannie9809 7:7ae14b3b00d1 329 // SDNN -- std of normal to normal R-R intervals
jeannie9809 0:338c50c9c8cd 330 }
jeannie9809 0:338c50c9c8cd 331
jeannie9809 0:338c50c9c8cd 332 // main() runs in its own thread in the OS
jeannie9809 3:0da9235c9069 333 int main()
jeannie9809 3:0da9235c9069 334 {
jeannie9809 0:338c50c9c8cd 335 // printf("Hello world.\r\n");
jeannie9809 4:94190624967a 336 for(int i = 0; i < num_samples; i++) {
jeannie9809 4:94190624967a 337 TIME[i] = (double)(i*(30.0/num_samples));
jeannie9809 4:94190624967a 338 }
jeannie9809 4:94190624967a 339
jeannie9809 0:338c50c9c8cd 340 t.start(callback(&evqueue, &EventQueue::dispatch_forever));
jeannie9809 0:338c50c9c8cd 341 kw40z_device.attach_buttonLeft(&ButtonLeft);
jeannie9809 0:338c50c9c8cd 342 kw40z_device.attach_buttonRight(&ButtonRight);
jeannie9809 3:0da9235c9069 343
jeannie9809 0:338c50c9c8cd 344 pwr1v8 = 1;
jeannie9809 0:338c50c9c8cd 345 pwr3v3b = 1;
jeannie9809 0:338c50c9c8cd 346 pwr15v = 0;
jeannie9809 3:0da9235c9069 347
jeannie9809 0:338c50c9c8cd 348 maximInterrupt.fall(interruptHandler);
jeannie9809 0:338c50c9c8cd 349 maximInterrupt.enable_irq();
jeannie9809 3:0da9235c9069 350
jeannie9809 0:338c50c9c8cd 351 MAX30101::InterruptBitField_u interruptStatus;
jeannie9809 0:338c50c9c8cd 352 interruptStatus.all = 0xFF;
jeannie9809 0:338c50c9c8cd 353 hr.enableInterrupts(interruptStatus);
jeannie9809 3:0da9235c9069 354
jeannie9809 3:0da9235c9069 355 char text[20]; /* Text Buffer */
jeannie9809 0:338c50c9c8cd 356 oled_text_properties_t textProperties = {0};
jeannie9809 3:0da9235c9069 357 oled.GetTextProperties(&textProperties);
jeannie9809 0:338c50c9c8cd 358 /* Turn on the backlight of the OLED Display */
jeannie9809 0:338c50c9c8cd 359 oled.DimScreenON();
jeannie9809 3:0da9235c9069 360
jeannie9809 3:0da9235c9069 361 /* Fills the screen with solid black */
jeannie9809 0:338c50c9c8cd 362 oled.FillScreen(COLOR_BLACK);
jeannie9809 1:eabf219849ab 363 strcpy((char *) text, "Raw PPG:");
jeannie9809 0:338c50c9c8cd 364 oled.Label((uint8_t *)text,7,0);
jeannie9809 3:0da9235c9069 365
jeannie9809 1:eabf219849ab 366 strcpy((char *) text, "SDNN; LF/HF:");
jeannie9809 0:338c50c9c8cd 367 oled.Label((uint8_t *)text,7,40);
jeannie9809 0:338c50c9c8cd 368 //dynamic text setup
jeannie9809 0:338c50c9c8cd 369 textProperties.fontColor = COLOR_WHITE;
jeannie9809 0:338c50c9c8cd 370 textProperties.alignParam = OLED_TEXT_ALIGN_RIGHT;
jeannie9809 3:0da9235c9069 371 oled.SetTextProperties(&textProperties);
jeannie9809 3:0da9235c9069 372
jeannie9809 0:338c50c9c8cd 373 txThread.start(txTask);
jeannie9809 0:338c50c9c8cd 374 while (true) {
jeannie9809 3:0da9235c9069 375
jeannie9809 0:338c50c9c8cd 376 /* Format the time reading */
jeannie9809 1:eabf219849ab 377 sprintf(text,"%d",ppg_single_sample);
jeannie9809 3:0da9235c9069 378
jeannie9809 0:338c50c9c8cd 379 /* Display time reading in 35px by 15px textbox at(x=55, y=40) */
jeannie9809 0:338c50c9c8cd 380 oled.TextBox((uint8_t *)text,55,15,35,15); //Increase textbox for more digits
jeannie9809 3:0da9235c9069 381 if (ppg_single_sample > 45) {
jeannie9809 1:eabf219849ab 382 sprintf(text,"%d; %.2f",SDNN, HF_LF);
jeannie9809 3:0da9235c9069 383
jeannie9809 0:338c50c9c8cd 384 /* Display time reading in 35px by 15px textbox at(x=55, y=40) */
jeannie9809 0:338c50c9c8cd 385 oled.TextBox((uint8_t *)text,55,55,35,15); //Increase textbox for more digits
jeannie9809 3:0da9235c9069 386 } else {
jeannie9809 0:338c50c9c8cd 387 sprintf(text,"wait HR");
jeannie9809 3:0da9235c9069 388
jeannie9809 0:338c50c9c8cd 389 /* Display time reading in 35px by 15px textbox at(x=55, y=40) */
jeannie9809 0:338c50c9c8cd 390 oled.TextBox((uint8_t *)text,55,55,35,15);
jeannie9809 0:338c50c9c8cd 391 }
jeannie9809 3:0da9235c9069 392
jeannie9809 0:338c50c9c8cd 393 Thread::wait(1000);
jeannie9809 3:0da9235c9069 394 }
jeannie9809 0:338c50c9c8cd 395 return 0;
jeannie9809 0:338c50c9c8cd 396 }
jeannie9809 0:338c50c9c8cd 397