#include <Servo.h>

Servo myServo;
const int servoPin = 9;
const int buttonPin = 2;

int currentAngle = 0;
bool lastButtonState = HIGH;
bool toggledState = false;

void setup() {
  myServo.attach(servoPin);
  pinMode(buttonPin, INPUT_PULLUP); // 使用內建上拉電阻
  Serial.begin(9600);
  myServo.write(0); // 初始角度
  Serial.println("0 角度: 0");
}

void loop() {
  bool currentButtonState = digitalRead(buttonPin);

  // 檢測按鈕從 HIGH → LOW 的邊緣（剛按下）
  if (lastButtonState == HIGH && currentButtonState == LOW) {
    toggledState = !toggledState;

    if (toggledState) {
      currentAngle = 90;
      myServo.write(currentAngle);
      Serial.print("1 角度: ");
      Serial.println(currentAngle);
    } else {
      currentAngle = 0;
      myServo.write(currentAngle);
      Serial.print("0 角度: ");
      Serial.println(currentAngle);
    }

    delay(300); // 防彈跳＋避免連續觸發
  }

  lastButtonState = currentButtonState;
}