#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL4UCK7au3d"
#define BLYNK_TEMPLATE_NAME "BABY INCUBATOR USING IOT TECHNOLOGY"
#define BLYNK_AUTH_TOKEN "CvgcXQZ7QB2gPsMZRnYzbs-iSAUH3M88"

//#define USE_ARDUINO_INTERRUPTS false
#define FAN 5
#define HEATER 4
#define rLED 13
#define bLED 14
#define gLED 26
#define LED 5
#define DHT_PIN  15
#define PulseSensorPurplePin 36
//#include <PulseSensorPlayground.h>
#include "DHTesp.h"
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

DHTesp dhtSensor;

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

/*
int PulseSensorPurplePin = 18;        
int LED13 = 2;   
int Signal,counter;                
int Threshold = 550;   
*/

float Temperature,stemp,ttemp;
float Humidity,shum,thum;
float bpm,sbpm,tbpm;
String notification;
bool state=LOW;


void setup() 
{
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("*BABY INCUBATOR*");
  lcd.setCursor(0, 1);
  lcd.print("SYSTEM BOOTING..");
  
  pinMode(FAN,OUTPUT);
  pinMode(HEATER,OUTPUT);
  pinMode(rLED,OUTPUT);
  pinMode(gLED,OUTPUT);
  pinMode(bLED,OUTPUT);
  digitalWrite(rLED,LOW);
  digitalWrite(gLED,LOW);
  digitalWrite(bLED,LOW);
  digitalWrite(FAN,LOW);
  digitalWrite(HEATER,LOW);
  
  Serial.begin(115200);

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  Blynk.begin(auth, ssid, pass);
  
  for(int i=0;i<3;i++)
  {
    digitalWrite(rLED,HIGH);
    delay(200);
    digitalWrite(gLED,HIGH);
    delay(200);
    digitalWrite(bLED,HIGH);
    delay(200);
    digitalWrite(bLED,LOW);
    delay(200);
    digitalWrite(gLED,LOW);
    delay(200);
    digitalWrite(rLED,LOW);
    delay(200);
  }
}

void loop() 
{
  Blynk.run();
  get_TempHum();
  get_bpm();
  send_update();
}

void get_TempHum()
{
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  Temperature = data.temperature;
  Humidity =data.humidity;
}

void get_bpm()
{
  bpm = map(analogRead(36),0,4095,0,200);
}

void send_update() 
{
  bool CND1 = Temperature<(36) && Temperature>(34) && Humidity<(75) && Humidity>(50);
  bool CND2 = bpm< (160) && bpm>(120);
      if(CND1==HIGH && CND2==HIGH)
      {
        digitalWrite(rLED,LOW);
        digitalWrite(gLED,HIGH);
        digitalWrite(bLED,HIGH);
        state=LOW;
        notification="ALL CND  STABLE";
      }
      else if(CND1==HIGH && CND2==LOW)
      {
        digitalWrite(rLED,HIGH);
        digitalWrite(gLED,HIGH);
        digitalWrite(bLED,LOW);
        state=HIGH;
        notification="BPM IS UNSTABLE";
      }
      else if(CND1==LOW && CND2==HIGH)
      {
        digitalWrite(rLED,HIGH);
        digitalWrite(gLED,LOW);
        digitalWrite(bLED,HIGH);
        state=HIGH;
        notification="T&H IS UNSTABLE";
      }
      else if(CND1==LOW && CND2==LOW)
      {
        digitalWrite(rLED,HIGH);
        digitalWrite(gLED,LOW);
        digitalWrite(bLED,LOW);
        state=HIGH;
        notification="ALL CND UNSTABLE";
      }
      if(Temperature>36)
      {
         digitalWrite(FAN,HIGH);
         digitalWrite(HEATER,LOW);
      }
      else if(Temperature<34)
      {
        digitalWrite(FAN,LOW);
        digitalWrite(HEATER,HIGH);
      }
      else 
      {
        digitalWrite(FAN,LOW);
        digitalWrite(HEATER,LOW);
      }
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("T:");
  lcd.setCursor(2, 0);
  lcd.print(Temperature,1);
  /////////////////////////////
  lcd.setCursor(5, 0);
  lcd.print("H:");
  lcd.setCursor(7, 0);
  lcd.print(Humidity);
  ////////////////////////////
  lcd.setCursor(10, 0);
  lcd.print("B:");
  lcd.setCursor(12, 0);
  lcd.print(bpm);
  ////////////////////////////
  lcd.setCursor(0, 1);
  lcd.print(notification);
  Blynk.virtualWrite(V2,bpm);
  Blynk.virtualWrite(V0,Temperature);
  Blynk.virtualWrite(V1,Humidity);
  Blynk.virtualWrite(V6,notification);
  Blynk.virtualWrite(V7,state);
  delay(500);  
}