#define BLYNK_TEMPLATE_NAME "light"
#define BLYNK_AUTH_TOKEN "eZvQklag8EkKXmNcvLUYhT_0tX1q9eJI"
#define BLYNK_TEMPLATE_ID "TMPL32aIeJ5xF"

#include <BlynkSimpleEsp32.h>
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>
#include <Wire.h>
Adafruit_MPU6050 m_p_u;

#define TRIG_PIN1 5
#define ECHO_PIN1 18
#define TRIG_PIN2 16
#define ECHO_PIN2 17
#define TRIG_PIN3 4
#define ECHO_PIN3 15
#define TRIG_PIN4 13
#define ECHO_PIN4 14
#define BUZZER_PIN 19

char auth[]="eZvQklag8EkKXmNcvLUYhT_0tX1q9eJI";
char ssid[]="Wokwi-GUEST";
char pass[]="";

void setup() {
   Blynk.begin(auth,ssid,pass);

  // put your setup code here, to run once:
  Serial.begin(9600);
  while(!Serial)
  delay(20);
  if(!m_p_u.begin()){
    while(1){
      delay(20);
    }
  }

  // Initialize ultrasonic sensors
  pinMode(TRIG_PIN1, OUTPUT);
  pinMode(ECHO_PIN1, INPUT);
  pinMode(TRIG_PIN2, OUTPUT);
  pinMode(ECHO_PIN2, INPUT);
  pinMode(TRIG_PIN3, OUTPUT);
  pinMode(ECHO_PIN3, INPUT);
  pinMode(TRIG_PIN4, OUTPUT);
  pinMode(ECHO_PIN4, INPUT);

  // Initialize buzzer
  pinMode(BUZZER_PIN, OUTPUT);
  digitalWrite(BUZZER_PIN, LOW); // Ensure buzzer is off at the start
  
}

long readUltrasonicDistance(int trigPin, int echoPin) {
  long duration, distance;
  
  // Clear the TRIG_PIN by setting it LOW
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  
  // Set the TRIG_PIN HIGH for 10 microseconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  // Read the ECHO_PIN, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
  
  // Calculate the distance
  distance = duration * 0.034 / 2; // Speed of sound wave divided by 2 (go and back)
  
  return distance;
   
}

void loop() {
  Blynk.run();
  long left = readUltrasonicDistance(TRIG_PIN1, ECHO_PIN1);
  long right = readUltrasonicDistance(TRIG_PIN2, ECHO_PIN2);
  long front = readUltrasonicDistance(TRIG_PIN3, ECHO_PIN3);
  long back = readUltrasonicDistance(TRIG_PIN4, ECHO_PIN4);

  Serial.print("left:");
  Serial.println("The obstacle is found at the Left side");
  Serial.print(left);
  Serial.println(" cm");
  Serial.print("right:");
  Serial.println("The obstacle is found at the Right side");
  Serial.print(right);
  Serial.println(" cm");
  Serial.print("front:");
  Serial.println("The obstacle is found at the Front side");
  Serial.print(front);
  Serial.println(" cm");
  Serial.print("back:");
  Serial.println("The obstacle is found at the Back side");
  Serial.print(back);
  Serial.println(" cm");

  // If any sensor detects an object closer than 10 cm, turn on the buzzer
  if((left<=10))
  {
    tone(BUZZER_PIN,1000); //set the buzzer as an output
    delay(1000); //wait for 500 milliseconds
    Blynk.virtualWrite(left,HIGH);
  }
  else
  {
    noTone(BUZZER_PIN); //stop the tone
    delay(200); //wait for 500 milliseconds
    Blynk.virtualWrite(left,LOW);
  }
  
  if((right<=10))
  {
    tone(BUZZER_PIN,1000); //set the buzzer as an output
    delay(1000); //wait for 500 milliseconds
    Blynk.virtualWrite(right,HIGH);
  }
  else
  {
    noTone(BUZZER_PIN); //stop the tone
    delay(200); //wait for 500 milliseconds
    Blynk.virtualWrite(right,LOW);
  }

  if((front<=10))
  {
    tone(BUZZER_PIN,1000); //set the buzzer as an output
    delay(1000); //wait for 500 milliseconds
    Blynk.virtualWrite(front,HIGH);
  }
  else
  {
    noTone(BUZZER_PIN); //stop the tone
    delay(200); //wait for 500 milliseconds
    Blynk.virtualWrite(front,LOW);
  }

  if((back<=10))
  {
    tone(BUZZER_PIN,1000); //set the buzzer as an output
    delay(1000); //wait for 500 milliseconds
    Blynk.virtualWrite(back,HIGH);
  }
  else
  {
    noTone(BUZZER_PIN); //stop the tone
    delay(200); //wait for 500 milliseconds
    Blynk.virtualWrite(back,LOW);
  }
  {
sensors_event_t acc, gcc, temp;
m_p_u.getEvent(&acc, &gcc, &temp);
Serial.println("Acceleration on x axes");
Serial.println(acc.acceleration.x);
  delay(1000); // this speeds up the simulation

Serial.println("Acceleration on y axes");
Serial.println(acc.acceleration.y);
  delay(1000);

Serial.println("Acceleration on z axes");
Serial.println(acc.acceleration.z);
  delay(1000);

Serial.println("Rotation of x axes: ");
Serial.println((gcc.gyro.x)*180/3.14);
Serial.println("Rotation of y axes: ");
Serial.println((gcc.gyro.x)*180/3.142);
Serial.println("Rotation of z axes: ");
Serial.println((gcc.gyro.x)*180/3.142);
delay(1000);
Serial.println("Temperature:");
Serial.println(temp.temperature);
Serial.println("degc");
Serial.println("");
delay(1000);
if((acc.acceleration.x) || (acc.acceleration.y) || (acc.acceleration.z) > 0)
{
  Serial.println("gps is activated");
}
else{
  Serial.println("gps is unactivated");
}

}



 }