#define BLYNK_TEMPLATE_ID "TMPL69hA3FK-Q"
#define BLYNK_TEMPLATE_NAME "sensor ultrasonik blynk"
#define BLYNK_AUTH_TOKEN "aAJ2kD7yLHyrtmI9qyrceEUj3gcb_lCv"

#define echoPin 18
#define trigPin 19

#define RED_LED 15
#define YELLOW_LED 2
#define BLUE_LED 4

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

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

BlynkTimer timer;

float measuredDistance = 0; // Declare measuredDistance at a global scope

void kirimData() {
  Blynk.virtualWrite(V0, measuredDistance); // menulis nilai ke gauge
  }

  BLYNK_WRITE(V1) {
    measuredDistance = param.asFloat(); // membaca nilai dari slider
    Serial.print("Jarak: ");
    Serial.print(measuredDistance);
    Serial.println(" cm");
    }

void setup() {
  pinMode(echoPin, INPUT);
  pinMode(trigPin, OUTPUT);

  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);

  pinMode(RED_LED, OUTPUT);
  pinMode(YELLOW_LED, OUTPUT);
  pinMode(BLUE_LED, OUTPUT);

  timer.setInterval(2000L, kirimData);
}

void loop() {
  if (measuredDistance > 200) {
    Serial.println("Jarak Jauh");
    digitalWrite(RED_LED, HIGH);
    digitalWrite(YELLOW_LED, LOW);
    digitalWrite(BLUE_LED, LOW);
    } else if (measuredDistance > 100 && measuredDistance <= 200) {
    Serial.println("Jarak Sedang");
    digitalWrite(RED_LED, LOW);
    digitalWrite(YELLOW_LED, HIGH);
    digitalWrite(BLUE_LED, LOW);
    } else if (measuredDistance < 100) {
    Serial.print("Jarak Dekat");
    digitalWrite(RED_LED, LOW);
    digitalWrite(YELLOW_LED, LOW);
    digitalWrite(BLUE_LED, HIGH);
  }

delay(1000);
Blynk.run();
timer.run();
}