#include "DHT.h"
#include <Servo.h>

#define DHTPIN 7
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

const int TRIG_PIN_L = 11; 
const int ECHO_PIN_L = 10; 

const int TRIG_PIN_R = 9; 
const int ECHO_PIN_R = 8; 

float duration_us_L, dist_L, t;
float duration_us_R, dist_R;
int ldr_data;

Servo sL;


void setup() {
  Serial.begin(9600);
  dht.begin();
  pinMode(TRIG_PIN_R, OUTPUT); 
  pinMode(ECHO_PIN_R, INPUT);  
  pinMode(TRIG_PIN_L, OUTPUT); 
  pinMode(ECHO_PIN_L, INPUT);   
  pinMode(17, INPUT);
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);

  sL.attach(3);
  
}

void loop() {
  ultrasonic_R();
  ultrasonic_L();
  Servo();
  
  
  if (dist_R < 360 || dist_L < 360) {
    temp();
    if (t > 30) {
      LDR();
      if (ldr_data == 1) {
        digitalWrite(12, LOW);
        digitalWrite(13, HIGH);
      } else if (ldr_data == 0) {
        digitalWrite(12, HIGH);
        digitalWrite(13, HIGH);
      }
    } else if (t <= 30) {
      LDR();
      if (ldr_data == 1) {
        digitalWrite(12, LOW);
        digitalWrite(13, LOW);
      } else if (ldr_data == 0) {
        digitalWrite(12, HIGH);
        digitalWrite(13, LOW);
      }
    }
  } else {
    digitalWrite(12, LOW);
    digitalWrite(13, LOW);
  }
}

void ultrasonic_R() {
  digitalWrite(TRIG_PIN_R, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN_R, LOW);
  duration_us_R = pulseIn(ECHO_PIN_R, HIGH);
  dist_R = 0.017 * duration_us_R;
  Serial.print("OBJECT DETECTED_R : ");
  Serial.print(dist_R);
  Serial.println(" cm");
}

void ultrasonic_L() {
  digitalWrite(TRIG_PIN_L, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN_L, LOW);
  duration_us_L = pulseIn(ECHO_PIN_L, HIGH);
  dist_L = 0.017 * duration_us_L;
  Serial.print("OBJECT DETECTED_L : ");
  Serial.print(dist_L);
  Serial.println(" cm");
}

void Servo() {
  for (int i = 0; i <= 90; i++) {
    sL.write(i);
    delay(10);
  }
  for (int j = 90; j >= 0; j--) {
    sL.write(j);
    delay(10);
  }
}

void LDR() {
  ldr_data = digitalRead(17);
  Serial.println(ldr_data);
}

void temp() {
  float h = dht.readHumidity();
  t = dht.readTemperature();
  Serial.print("HUMIDITY = ");
  Serial.print(h);
  Serial.print("%\tTEMPERATURE = ");
  Serial.print(t);
  Serial.println(" °C");
}