//**********BLYNK, identitas device*****************************
#define BLYNK_TEMPLATE_ID "TMPL6oo6i_VMI"
#define BLYNK_TEMPLATE_NAME "buzz ldr"
#define BLYNK_AUTH_TOKEN "CzeMiu5LXmBJfrv6iFhtNdhDt7qsuLnm"

//**********BLYNK, library**************************************
#include <BlynkSimpleEsp32.h>
BlynkTimer timer;

//**********BLYNK, ssid, pass, token****************************
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

//*****ULTRASONI, menamai pin yang digunakan****************
#define pinecho 2
#define pintrig 15

#define buz 32

BLYNK_WRITE(V0)
{
  tone(buz, 262, 2000);
  //delay(2000);
  tone(buz, 400, 2000);
  //delay(2000);
}
//*****BLYNK, kirim nilai sensor*****************************
void sendSensor()
{
   //*****ULTRASONIK, membaca jarak***************************
  digitalWrite(pintrig, LOW);
  delayMicroseconds(2);
  digitalWrite(pintrig, HIGH);
  delayMicroseconds(10);
  digitalWrite(pintrig, LOW);
  int duration=pulseIn(pinecho, HIGH);
  float distance=duration*0.034/2;

  //*****SERIAL MONITOR, menampilkan data jarak**************
  Serial.print(distance);
  Serial.println("cm");
  
  //*****BLYNK, kirim nilai sensor*****************************
  Blynk.virtualWrite(V1, distance);
}


void setup() {
  //*****SERIAL MONITOR, setting baud rate*******************
  Serial.begin(115200);

  //*****ULTRASONIK, setting pin yang digunakan**************
  pinMode(pinecho, INPUT);
  pinMode(pintrig, OUTPUT);
   pinMode(buz, OUTPUT);

  //********BLYNK, mulai koneksi ke blynk***********************
  Blynk.begin(auth, ssid, pass);
  timer.setInterval(1000L, sendSensor);
}

void loop() {
  //********BLYNK, menjalankan blynk****************************
  Blynk.run();
  timer.run();
}