#define BLYNK_TEMPLATE_ID "TMPL32CW7oHaN"
#define BLYNK_TEMPLATE_NAME "Water level"
#define BLYNK_AUTH_TOKEN "qqkYOiIiLinCtc1k59thz7XpflvFXKQm"

#define BLYNK_PRINT Serial
#include<BlynkSimpleEsp32.h>
#include <WiFi.h>

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

int tp=2;
int ep=4;
long dur;
float sp=0.03405;
int dist;
int fd;
float perc;
float fp;

void ultrasonic() {

  digitalWrite(tp, LOW);
  delayMicroseconds(2);
  digitalWrite(tp, HIGH);
  delayMicroseconds(10);
  digitalWrite(tp, LOW);
  dur=pulseIn(ep,HIGH);
  dist=dur*sp/2;
  perc=dist*0.25;
  fd=400-dist;
  fp=100-perc;
  Serial.print("Distance= ");
  Serial.println(fd);
  Serial.print("Percentage= ");
  Serial.println(fp);

  Blynk.virtualWrite(V0,fd);
  Blynk.virtualWrite(V1,fp);

  if(fp<20)
  {
    Blynk.logEvent("low_wa");
  }
  else if(fp>90)
  {
    Blynk.logEvent("high_wa");
  }
  delay(1000);
}


void setup() {
  Serial.begin(9600);
  pinMode(tp, OUTPUT);
  pinMode(ep, INPUT);
  Blynk.begin(auth, ssid, pass);

  
}

void loop() {
  
  Blynk.run();
  ultrasonic();
    
}