veryverystrange [---]

// General Library
#include <Arduino.h>
#include "binary.h"
// Math operation
#include <math.h>
// I2C & TWI communication
#include <Wire.h>
#include "I2Cdev.h"
// Serial connection
#include <SoftwareSerial.h>
// LiquidCrystal Display
#include <hd44780.h>
#include <hd44780ioClass/hd44780_I2Cexp.h>
// 7 segment
#include "LedControl.h"
// Library for heart rate & oxymeter
#include "MAX30100_new.h"
// Library for RTC
#include <MyRealTimeClock.h>
// Library for accelerometer

// Arduino Wire library is required if I2Cdev I2CDEV_ARDUINO_WIRE implementation
// is used in I2Cdev.h
#if I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE
    #include "Wire.h"
#endif

// Definiting constants
#define aref_voltage 3.3

// uncomment "OUTPUT_READABLE_QUATERNION" if you want to see the actual
// quaternion components in a [w, x, y, z] format (not best for parsing
// on a remote host such as Processing or something though)
// #define OUTPUT_READABLE_QUATERNION

// uncomment "OUTPUT_READABLE_YAWPITCHROLL" if you want to see the yaw/
// pitch/roll angles (in degrees) calculated from the quaternions coming
// from the FIFO. Note this also requires gravity vector calculations.
// Also note that yaw/pitch/roll angles suffer from gimbal lock (for
// more info, see: http://en.wikipedia.org/wiki/Gimbal_lock)


// uncomment "OUTPUT_TEAPOT" if you want output that matches the
// format used for the InvenSense teapot demo
//#define OUTPUT_TEAPOT

// MCU defaults

#define LED_PIN 13 // (Arduino is 13, Teensy is 11, Teensy++ is 6)
bool blinkState = false; //Indicate activity state






// Sensor class objects
MAX30100_new* pulseOxymeter;
SoftwareSerial BTserial(8,9); // RX | TX
hd44780_I2Cexp lcd;
LedControl lc=LedControl(12,11,10,1);
MyRealTimeClock myRTC(5, 6, 7); // Assign Digital Pins

// Constants
const int LCD_COLS = 16;
const int LCD_ROWS = 2;
const int buttonPin = 3;

// Temperature Sensor
int tempSensorPin = A0;

// Sound Sensor
int audioVal = 0;
int soundSensorPin = A3;

// Pulse Oxymeter
//int heartRate = 0;
float heartRate = 0;
int oxSat = 0;
long avgHeartRate = 0;
long ttlHeartRate = 0;
long cntHeartRate = 0;

// Button
int buttonState = 0;

// Common variable for temp and stretch
int readIndex = 0;              // the index of the current reading
const int numReadings = 50;     // averaging parameter for stretch and temp

// Averaging temperature parameter details
//const int numReadingsTemp = 10;
int readingsTemp[numReadings];      // the readings from the analog input
int averageTemp = 0;                // the average
int totalTemp = 0;                  // the running total

// Averaging stretching sensor values
//const int numReadingsStretch = 10;
int readingsStretch[numReadings];      // the readings from the analog input
int averageStretch = 0;                // the average
int totalStretch = 0;                  // the running total


// Timer settings for printing each second
int interval = 500;
unsigned long previousMillis = 0;
unsigned long currentMillis;

int heartBeatNotDetected = 0;

// disp heart boundary
byte sf[8]= {B00000000,B00100100,B01011010,B10000001,B10000001,B01000010,B00100100,B00011000};
// disp heart inside
byte nf[8]={B00000000, B00100100,B01111110,B11111111,B11111111,B01111110,B00111100,B00011000};

// ================================================================
// ===               INTERRUPT DETECTION ROUTINE                ===
// ================================================================

// ================================================================




void setup()
{
    // ================================================================

      // join I2C bus (I2Cdev library doesn't do this automatically)
    #if I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE
        Wire.begin();
        Wire.setClock(400000); // 400kHz I2C clock. Comment this line if having compilation difficulties
    #elif I2CDEV_IMPLEMENTATION == I2CDEV_BUILTIN_FASTWIRE
        Fastwire::setup(400, true);
    #endif


    // Serial monitor settings
    Wire.begin();
    Serial.begin(115200); // pulse oxymeter
    //Serial.begin(9600); //temperature sensor
    BTserial.begin(9600);
    //BTserial.begin(115200);
    while (!Serial); // wait for Leonardo enumeration, others continue immediately



    // wait for ready
    Serial.println(F("\nSend any character to begin DMP programming and demo: "));
    /* Read for sensor from bluetooth of mobile
    while (Serial.available() && Serial.read()); // empty buffer
    while (!Serial.available());                 // wait for data
    while (Serial.available() && Serial.read()); // empty buffer again
    */
    while (BTserial.available() && BTserial.read()); // empty buffer
    while (!BTserial.available());                 // wait for data
    while (BTserial.available() && BTserial.read()); // empty buffer again
    //
    // load and configure the DMP

    // ================================================================

    // configure LED for output
    pinMode(LED_PIN, OUTPUT);

    // Board settings
    analogReference(EXTERNAL);

    // Necessary printing
    Serial.println("Pulse oxymeter initialized!");

    // Oxymeter settings
    pulseOxymeter = new MAX30100_new();

    // Reset clock to a new time while needed
    //myRTC.setDS1302Time(00, 14, 17, 4, 10, 5, 2018);

    // LCD settings
    lc.shutdown(0,false);
    lc.setIntensity(0,8);
    lc.clearDisplay(0);

    int status;

    status = lcd.begin(LCD_COLS, LCD_ROWS);
    if(status) // non zero status means it was unsuccesful
    {
    status = -status; // convert negative status value to positive number

    // begin() failed so blink error code using the onboard LED if possible
    hd44780::fatalError(status); // does not return
    }

    Serial.println("LCD initialized!");
    // Temp sensor settings
    for (int thisReading = 0; thisReading < numReadings; thisReading++) {
      readingsTemp[thisReading] = 0;
      readingsStretch[thisReading] = 0;
    }

    Serial.println("Temp Sensor initialized!");
    // Button settings
    pinMode(buttonPin, INPUT);

    // setSyncProvider( requestSync);  //set function to call when sync required
    //Serial.println("Waiting for sync message");

    //setTime(11,58,00,16,4,2018);
}

void drawEmptyHeart(){
    lc.setRow(0,0,sf[0]);
    lc.setRow(0,1,sf[1]);
    lc.setRow(0,2,sf[2]);
    lc.setRow(0,3,sf[3]);
    lc.setRow(0,4,sf[4]);
    lc.setRow(0,5,sf[5]);
    lc.setRow(0,6,sf[6]);
    lc.setRow(0,7,sf[7]);
}

void drawHeart(){
    // Display no heart
    lc.setRow(0,0,nf[0]);
    lc.setRow(0,1,nf[1]);
    lc.setRow(0,2,nf[2]);
    lc.setRow(0,3,nf[3]);
    lc.setRow(0,4,nf[4]);
    lc.setRow(0,5,nf[5]);
    lc.setRow(0,6,nf[6]);
    lc.setRow(0,7,nf[7]);
    delay(10);
}

void printTerminal(uint8_t hourVal,uint8_t minVal, uint8_t secVal, uint8_t hrVal, uint8_t oxSatVal, uint8_t tempVal, uint8_t stretchVal, uint8_t audVal, long yawVal, long pitVal, long rollVal) {
    Serial.print(hourVal); // Element 4
    Serial.print(":");
    Serial.print(minVal); // Element 5
    Serial.print(":");
    Serial.println(secVal);
    Serial.print("HR: ");
    Serial.print(hrVal);
    Serial.print("bpm / O2: ");
    Serial.print(oxSatVal);
    Serial.print("% / T: ");
    Serial.print(tempVal);
    Serial.print(" / Stretch: ");
    Serial.println(stretchVal);
    Serial.print("Audio: ");
    Serial.print(audVal);
    Serial.print(" / Y: ");
    Serial.print(yawVal);
    Serial.print(" / P: ");
    Serial.print(pitVal);
    Serial.print(" / R: ");
    Serial.println(rollVal);
}

void printBT(uint8_t hourVal,uint8_t minVal, uint8_t secVal, uint8_t hrVal, uint8_t oxSatVal, uint8_t tempVal, uint8_t stretchVal, uint8_t audVal, long yawVal, long pitVal, long rollVal) {
    BTserial.write(Serial.read());
    BTserial.print("Time: /");
    BTserial.print(hourVal); // Element 4
    BTserial.print(":");
    BTserial.print(minVal); // Element 5
    BTserial.print(":");
    BTserial.print(secVal);
    BTserial.print("/\t");
    BTserial.print("HR: /");
    BTserial.print(hrVal);
    BTserial.print("/\tO2: /");
    BTserial.print(oxSatVal);
    BTserial.print("/% \tT: /");
    BTserial.print(tempVal);
    BTserial.print("/C\t Y:/");
    BTserial.print(yawVal);
    BTserial.print("/\t P:/");
    BTserial.print(pitVal);
    BTserial.print("/\t R:/");
    BTserial.print(rollVal);
    BTserial.print("/\t Aud:/");
    BTserial.print(audVal);
    BTserial.print("/\t Str:/");
    BTserial.print(stretchVal);
    BTserial.println("/");
}

void printLCD(uint8_t hourVal, uint8_t minVal, uint8_t tempVal, uint8_t hrVal, uint8_t oxSatVal) {
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print(hourVal); // Element 4
    lcd.print(":");
    lcd.print(minVal); // Element 5
    lcd.print(" / T: ");
    lcd.print(tempVal);
    lcd.print("C");
    lcd.setCursor(0,1);
    lcd.print("HR: ");
    lcd.print(hrVal);
    lcd.print("b / O2: ");
    lcd.print(oxSatVal);
    lcd.print("%");
}

void loop()
{
      // ================================================================

    // Update time
    myRTC.updateTime();

    // Default behavior
    drawEmptyHeart();

    // Button logic
    buttonState = digitalRead(buttonPin);

    // Sound sensor logic
    audioVal = analogRead(soundSensorPin);

    // Temp sensor reading
    int readingTemp = analogRead(tempSensorPin);

     //Reading Stretch Sensor
    int readingStretch = analogRead(A1);
    float tempVoltage = readingTemp * aref_voltage;
//    voltage /= 1024.0;
//    float temperatureC = (voltage - 0.5) * 100 ;

    // Averaging Temperature Results
    totalTemp = totalTemp - readingsTemp[readIndex];
    totalStretch = totalStretch - readingsStretch[readIndex];

    readingsTemp[readIndex] = tempVoltage;
    readingsStretch[readIndex] = readingStretch;

    totalTemp = totalTemp + readingsTemp[readIndex];
    totalStretch = totalStretch + readingsStretch[readIndex];

    readIndex = readIndex + 1;

    if (readIndex >= numReadings) {
      readIndex = 0;
    }

    averageTemp = totalTemp / numReadings;
    averageStretch = totalStretch / numReadings;

    // ================================================================


    // Pulse oxymeter logic
    pulseoxymeter_t result = pulseOxymeter->update();

    if(result.pulseDetected == true) {
        drawHeart();

        // Receving Sensor Values
        heartRate = result.heartBPM;
//        ttlHeartRate = ttlHeartRate + heartRate;
//        cntHeartRate = cntHeartRate + 1;
        Serial.print(heartRate); // Element 4
        Serial.println("bpm");
    }


//    else {
//        heartBeatNotDetected = heartBeatNotDetected + 1;
//
//        if (heartBeatNotDetected >= 500) {
//          heartRate = 0;
//          oxSat = 0;
//          heartBeatNotDetected = 0;
//        }
//    }



//    currentMillis = millis();
//
//    if((unsigned long)(currentMillis - previousMillis) >= interval) {
//      long yawAvg = 0;
//      long pitchAvg = 0;
//      long rollAvg = 0;
//      avgHeartRate = ttlHeartRate/cntHeartRate;
//
//      printTerminal(myRTC.hours, myRTC.minutes, myRTC.seconds, heartRate, oxSat, averageTemp, averageStretch, audioVal, yawAvg, pitchAvg, rollAvg);
//      printBT(myRTC.hours, myRTC.minutes, myRTC.seconds, heartRate, oxSat, averageTemp, averageStretch, audioVal, yawAvg, pitchAvg, rollAvg);
//      printLCD(myRTC.hours, myRTC.minutes,averageTemp, heartRate, oxSat);
//
//      previousMillis = currentMillis;
//
//      cntHeartRate = 0;
//      ttlHeartRate = 0;
//    }
}