//code using ultrasonic sensor with ESP32
#define trigPin 13
#define echoPin 12
#define buzzerpin 18 //define the pin connected to the buzzer
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>
#include <Wire.h>
Adafruit_MPU6050 m_p_u;

void setup() {
  Serial.begin (9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(buzzerpin,OUTPUT); // set the buzzer pin as an output
   // put your setup code here, to run once:
  Serial.begin(115200);
  while(!Serial)
  delay(20);
  if(!m_p_u.begin()){
    while(1){
      delay(20);
    }
  }
}

void loop() {
  long duration, distance;
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034 / 2;
  Serial.print("Distance: ");
  Serial.println(distance);
  delay(1000);
  Serial.println("CM");
  if((distance<=10))
  {
    tone(buzzerpin,1000); //set the buzzer as an output
    delay(500); //wait for 500 milliseconds
  }
  else
  {
    noTone(buzzerpin); //stop the tone
    delay(500); //wait for 500 milliseconds
  }
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);
  delay(1000);  
}