#include "BluetoothSerial.h"

int input;
int down;
BluetoothSerial SerialBT;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200); // memulai komunikasi serial
  SerialBT.begin("ESP32test"); 
  Serial.println("Perangkat telah dimulai, sekarang Anda dapat memasangkan perangkat dengan Bluetooth!");

  pinMode(4, OUTPUT);
  input = 0;
  down = 0;
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  analogWrite(4, input);
  if (SerialBT.available()) { 
    Serial.write(SerialBT.read()); 
  }
  Serial.println(input);

  if (Serial.available()) { // jika data tersedia di monitor serial
    SerialBT.write(Serial.read()); // kirim data ke perangkat Bluetooth
  }
  if (SerialBT.available()) { // jika data tersedia di perangkat Bluetooth
    Serial.write(SerialBT.read()); // mencetak data di monitor serial
  }
  delay(20);

  if(down == 0){
    input += 10;
    if(input == 255){
      down = 1;
    }
  }else if(down==1){
    input -=10;
    if(input == 0){
      down = 0;
    }
  }
  delay(100);
}