#include <ESP32Servo.h>  // Official library for ESP32 servos

const int servoPin = 2;  // GPIO2 for servo control
Servo myServo;           // Servo object
int pos = 0;             // Variable for position
bool increasing = true;  // Direction control

void setup() {
  Serial.begin(115200);
  myServo.attach(servoPin);  // Initialize servo on GPIO2

  // Configuration to display PWM signal
  Serial.println("Servo_Position,PWM_Value");  // Header for Serial Plotter
}

void loop() {
  // Forward sweep (0° to 180°)
  if (increasing) {
    pos++;
    if (pos >= 180) increasing = false;
  } 
  // Backward sweep (180° to 0°)
  else {
    pos--;
    if (pos <= 0) increasing = true;
  }

  myServo.write(pos);  // Move the servo to position 'pos'

  // Send data to Serial Plotter (position and actual PWM value)
  int pwmValue = map(pos, 0, 180, 500, 2400);  // Convert angle to PWM pulse width in microseconds
  Serial.print(pos);       // Angular position (0-180)
  Serial.print(",");       // Separator
  Serial.println(pwmValue);  // Pulse width in microseconds

  delay(15);  // Adjust movement speed
}