// Servo Control using LEDC PWM - XIAO ESP32-S3
// Servo signal on D2

const int SERVO_PIN = D2;

// LEDC channel and frequency
const int CHANNEL = 0;
const int FREQ = 50;       // Standard servo frequency
const int RES = 16;        // High resolution for smooth motion

// Servo pulse range (microseconds)
const int MIN_US = 500;
const int MAX_US = 2400;

void setup() {
  ledcSetup(CHANNEL, FREQ, RES);
  ledcAttachPin(SERVO_PIN, CHANNEL);
}

void writeServo(int angle) {
  int us = map(angle, 0, 180, MIN_US, MAX_US);
  int duty = (us * ((1 << RES) - 1)) / 20000; // 20ms period
  ledcWrite(CHANNEL, duty);
}

void loop() {
  for (int angle = 0; angle <= 180; angle++) {
    writeServo(angle);
    delay(10);
  }

  for (int angle = 180; angle >= 0; angle--) {
    writeServo(angle);
    delay(10);
  }
}