// Motor Control using PWM on ESP32-C3
const int motorPin = 3; // Use GPIO3 (check available PWM pins on ESP32-C3)
const int pwmChannel = 0;
const int freq = 5000;
const int resolution = 8; // 8-bit: 0–255

void setup() {
  Serial.begin(115200);
  ledcSetup(pwmChannel, freq, resolution);
  ledcAttachPin(motorPin, pwmChannel);
  Serial.println("Motor PWM control started...");
}

void loop() {
  // Increase speed gradually
  for (int dutyCycle = 0; dutyCycle <= 255; dutyCycle += 5) {
    ledcWrite(pwmChannel, dutyCycle);
    Serial.print("Increasing speed: ");
    Serial.println(dutyCycle);
    delay(50);
  }

  delay(500);

  // Decrease speed gradually
  for (int dutyCycle = 255; dutyCycle >= 0; dutyCycle -= 5) {
    ledcWrite(pwmChannel, dutyCycle);
    Serial.print("Decreasing speed: ");
    Serial.println(dutyCycle);
    delay(50);
  }

  delay(500);
}