#include <DHTesp.h>
DHTesp dht;
TempAndHumidity th;
const int trg=14,echo=13,grn=25,org=21,red=19,buzzer=2;
float dis=0;
void setup() {
  Serial.begin(115200);
  pinMode(trg, OUTPUT);
  pinMode(echo,INPUT);
  pinMode(grn, OUTPUT);
  pinMode(org,OUTPUT);
  pinMode(red, OUTPUT);
  pinMode(buzzer, OUTPUT);
  dht.setup(18,DHTesp::DHT22);
}
int ultra(){
  digitalWrite(trg,HIGH);
  delay(1000);
  digitalWrite(trg,LOW);
  float eh=pulseIn(echo,HIGH);
  dis=eh*0.034/2;
  return dis;
}
void loop() {
  th=dht.getTempAndHumidity();
  int sensor=ultra();
  if(th.temperature <=30 && th.humidity >=70 && dis>=300){
    digitalWrite(grn, HIGH);
    digitalWrite(org, LOW);
    digitalWrite(red, LOW);
    Serial.println("You are safe!!");
    noTone(buzzer);
  }
  else if((th.temperature >30 && th.temperature<70) && (th.humidity >30 && th.humidity<70) && (dis>200 && dis<300))
  {
    digitalWrite(org, HIGH);
    digitalWrite(grn, LOW);
    digitalWrite(red, LOW);
    Serial.println("You are unsafe!!");
    noTone(buzzer);
  }
  else if(th.temperature >=70 && th.humidity <=30 && dis<=200){
    digitalWrite(red, HIGH);
    digitalWrite(org, LOW);
    digitalWrite(grn, LOW);
    Serial.println("You are danger!!!!!!");
    tone(buzzer, 10000);
  }
  else{
    digitalWrite(red, LOW);
    digitalWrite(org, LOW);
    digitalWrite(grn, LOW);
    Serial.println("Unstable values");
    tone(buzzer, 10000);
  }
  delay(10);
}