/*************************************************************

  This sketch shows how to write values to Virtual Pins

  NOTE:
  BlynkTimer provides SimpleTimer functionality:
    http://playground.arduino.cc/Code/SimpleTimer

  App dashboard setup:
    Value Display widget attached to Virtual Pin V5
 *************************************************************/

/* Fill-in information from Blynk Device Info here */
#define BLYNK_TEMPLATE_ID           "TMPL6eeOhjs8r"
#define BLYNK_TEMPLATE_NAME         "sensor tinggi air"
#define BLYNK_AUTH_TOKEN            "-fGBFKZvvwN7ZvF9Xsxzau8uBX7KZ3eP"

/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial


#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

BlynkTimer timer;
int trig_pin = 23;
int echo_pin = 22;
long echotime;

float luas_alas = 219.8;
float tinggi_gelas = 11.5;
float volume, tinggi_air, jarak_pantul;

// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void myTimerEvent()
{
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V1, millis() / 1000);
}

void setup()
{
  // Debug console
  Serial.begin(115200);
  pinMode(trig_pin, OUTPUT);
  pinMode(echo_pin, INPUT);
  digitalWrite(trig_pin, LOW);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  // You can also specify server:
  //Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass, "blynk.cloud", 80);
  //Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass, IPAddress(192,168,1,100), 8080);

  // Setup a function to be called every second
  timer.setInterval(1000L, myTimerEvent);
}

void loop()
{
  Blynk.run();
  timer.run(); // Initiates BlynkTimer
  
  digitalWrite(trig_pin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig_pin, LOW);
  echotime = pulseIn(echo_pin, HIGH);

  jarak_pantul = (0.034 * (float) echotime)/2;
  tinggi_air = tinggi_gelas - jarak_pantul;
  volume = luas_alas * tinggi_air;


  Serial.println("jarak permukaan = ");
  Serial.println(jarak_pantul);
  Serial.println(" Cm");
  Serial.println("Tinggi air  = ");
  Serial.println(tinggi_air);
  Serial.println("  Cm");
  Serial.println("Volume   = ");
  Serial.println(volume);
  Serial.println(" Cm3");
  Serial.println("========================");

  delay(1000);

  Blynk.virtualWrite(V1, jarak_pantul);
  Blynk.virtualWrite(V2, volume); 
}