int trigger_pin=27;
int echo_pin=25;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  //Serial.println("Hello, ESP32!");
  pinMode(echo_pin, INPUT);
  pinMode(trigger_pin, OUTPUT);
  
}
int wdistance(){
 digitalWrite(trigger_pin,LOW);
 delay(10);
 digitalWrite(trigger_pin,HIGH);
 delay(100);
 digitalWrite(trigger_pin,LOW);
 float d=pulseIn(echo_pin,HIGH);
 return(d*0.034/2)+1;

 delay(1000);
 }


void loop() {
  // put your main code here, to run repeatedly:
  int c=wdistance();
  Serial.println(String(c));
 
  delay(1000); // this speeds up the simulation
}