/*
 * ESP32 PWM menggunakan LEDC API - Metode Advanced  
 * Compatible dengan ESP32 Core 3.X
 * 
 * Berdasarkan: Random Nerd Tutorials ESP32 PWM Guide
 */

// ===== KONFIGURASI PIN =====
const int ledPin = 16;        // GPIO16 untuk LED

// ===== KONFIGURASI PWM =====
const int freq = 5000;        // Frequency 5000 Hz
const int resolution = 8;     // Resolution 8-bit (0-255)

// ===== SETUP =====
void setup() {
  Serial.begin(115200);
  Serial.println("ESP32 PWM dengan LEDC API - Started");
  
  // Configure LED PWM dengan automatic channel selection
  ledcAttach(ledPin, freq, resolution);
  
  // Alternatif: jika ingin pilih channel manual
  // ledcAttachChannel(ledPin, freq, resolution, 0);
}

// ===== LOOP UTAMA =====
void loop() {
  // Increase the LED brightness
  for(int dutyCycle = 0; dutyCycle <= 255; dutyCycle++) {
    // Changing the LED brightness with PWM
    ledcWrite(ledPin, dutyCycle);
    delay(15);
  }
  
  // Decrease the LED brightness
  for(int dutyCycle = 255; dutyCycle >= 0; dutyCycle--) {
    // Changing the LED brightness with PWM
    ledcWrite(ledPin, dutyCycle);
    delay(15);
  }
}