Hygge Gauntlet

/*  HyggeGauntlet 
 *  Wearables 
 *  Authors: Linnette Martinez and Lauren Busser
--------------------------------------------------------------------*/

#define USE_ARDUINO_INTERRUPTS true    // Set-up low-level interrupts for most acurate BPM math.

//Libraries
#include <PulseSensorPlayground.h>     // Includes the PulseSensorPlayground Lib  
#include <Adafruit_NeoPixel.h>         // NeoPixels lib

//  Variables
const int PulseWire = 10;       // PulseSensor connected to ANALOG PIN 10
const int blinkLED = 12; 
const int stripPin = 12;  
int fadePin  = 8;   
int fadeRate = 255; 
boolean fadeCheck = false;    
int myBPM;
int Threshold = 550;           

PulseSensorPlayground pulseSensor;  // Creates an instance of the PulseSensorPlayground object 

// Set up use of NeoPixels
const int NUMPIXELS = 5;            // Put the number of NeoPixels you are using here
const int BRIGHTNESS = 50;          // Set brightness of NeoPixels here
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUMPIXELS, stripPin, NEO_GRB + NEO_KHZ800);

void setup() {   

  Serial.begin(9600);     

  // Configure the PulseSensor object, by assigning our variables to it. 
  pulseSensor.analogInput(PulseWire);   
  pulseSensor.blinkOnPulse(blinkLED);       //auto-magically blink LED with heartbeat.
  pulseSensor.setThreshold(Threshold);   

  //setup NeoPixels
   strip.begin();
   strip.setBrightness(BRIGHTNESS);
   //for (int x=0; x < NUMPIXELS; x++) {  // Initialize all pixels to 'off'
   // strip.setPixelColor(x, strip.Color(0, 0, 0));
   //}
   strip.show();

  // Double-check the "pulseSensor" object was created and "began" seeing a signal. 
   if (pulseSensor.begin()) {
    Serial.println("We created a pulseSensor Object !");  //This prints one time at power-up,  or reset.  
  }
} //end setup function

void loop() {

  myBPM = pulseSensor.getBeatsPerMinute();  // sets BPM value

  // Constantly test to see if "a beat happened" and prints to Serial Monitor
  if (pulseSensor.sawStartOfBeat()) {         
   Serial.println("  A HeartBeat Happened ! "); 
   Serial.print("BPM: ");                        
   Serial.println(myBPM); 
  
   fadeCheck = true; 
   ledFade(); 
  
   if (fadeCheck == true){                    
       fadeRate = 255;                  // Set 'fadeRate' Variable to 255 to fade LED with pulse
       fadeCheck = false;                       
   }
   //heartBeat();                       
  } // if pulse reading beat

  //Set a default display color
  for (int i=0; i < NUMPIXELS; i++){
      strip.setPixelColor(i, strip.Color(0, 20, 20)); 
  }
  strip.show();

  delay(20);               
} //end loop function

void ledFade (){  //attempt of adding a fade effect
  fadeRate -= 15;                         
  fadeRate = constrain(fadeRate,0,255);
  setHeart(fadeRate); 
}

void setHeart(int fa){
  //initilize the R,G,B values
  //tested how BPM effected color combinations
  int r = (myBPM - 60) * 2 ;  
  int g = 300 - myBPM ;
  int b =  myBPM + fa;

  //set a contrain in case calculation went above max color value of 255
  if(g > 255) {  g = 255; }
  if(r > 255) {  r = 255; }
  if(b > 255) {  b = 255; }

  // Set specific thresholds to emit specific soothing colors
  // Checks BPM and sets color combination accordingly 
  if (myBPM <= 63){ //orange
    r = 255;
    g = 69;
    b = 0;  
  }
  if (myBPM > 63 && myBPM <= 70){ //Light Pink
    r = 255;
    g = 204;
    b = 255;  
  }
  if (myBPM > 70 && myBPM <= 90){ //Light Blue
    r = 47;
    g = 141;
    b = 255;  
  }
  if (myBPM > 90){  //Purple
    r = 213;
    g = 128;
    b = 255;  
  }
  //Set specified colors to each NeoPixel
  for (volatile int i=0; i < NUMPIXELS; i++){
      strip.setPixelColor(i, strip.Color(r, g, b)); 
      delay(100);
  }
  strip.show(); //Display colors
  delay(3000);  //Hold for 3 seconds
}

//fuction to display heartbeat. Not called for the purpose of this application
void heartBeat (){

for (volatile int i=0; i < NUMPIXELS; i++){
      strip.setPixelColor(i, strip.Color(255, 0, 0)); 
    }
    strip.show();
    delay(100);
}