#include <Wire.h>
#include <Arduino.h>

#define led1 5
#define led2 18
#define PPM_PIN 4
int batas = 100;

void setup() {
  Wire.begin(23, 22);
  Serial.begin(115200);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  Serial.println("Hello, ESP32!");
}

void loop() {
  // Value after from AD convertor
  int16_t ppmValue = analogRead(PPM_PIN);
  // Map the correct value ad AD convertor expects max votage to be 3.3 V and we are sending 5 V
  int mappedppmValue = (ppmValue/4.095);
  Serial.print("PPM: ");
  Serial.println(mappedppmValue);

  Serial.print("Nilai Analog = ");
  Serial.println(ppmValue);
  Serial.print("Smoke = ");
  Serial.println(ppmValue-50);

  if(ppmValue-50 >= batas){
    Serial.println("Asap terdeteksi");
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
  } else {
    Serial.println("Asap tidak terdeteksi");
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);
  }
  delay(1000);
}