// Example code for controlling a servo
// First include the servo library, 
// this must be installed in the computer via Arduino IDE
#include <Servo.h>

// Define the pin that is used for sending data (i.e. the
// position) to the servo, and define a variable for the
// angle of the servo.
int servoPin = 8;
int servoAngle = 0;

int buttonPin = 2;
int buttonState = LOW;
int lastbuttonState = LOW;

boolean increaseAngle = false;

int ledPin = 13;
int ledState = LOW;


// Declare a servo object. In this example it is called
// flagServo, but can be called anything
Servo flagServo;

void setup() {
  // Connect the servo object to the servo pin using attach
  flagServo.attach(servoPin);

  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);
  pinMode(servoPin, OUTPUT);
}

void loop() { 
  // int servoAngle = 0;
  // buttonState = digitalRead(buttonPin);

  //1.0
  // if (buttonState == HIGH && lastbuttonState == LOW){
  //   servoAngle = 0;
  //   increaseAngle = !increaseAngle;
  //   Serial.println("pressed");
  //   delay(500);
  // }
  // lastbuttonState = buttonState;

  // if(servoAngle <= 90 && increaseAngle == true){
  //   flagServo.write(servoAngle);
  //   delay(1000);
  //   servoAngle += 10;
  // }
  // else if(servoAngle > 90){
  //   increaseAngle = false;
  // }

  //2.0
  // 读取按钮状态
  buttonState = digitalRead(buttonPin);

  // 按下按钮，闹钟打开
  if (buttonState == HIGH && lastbuttonState == LOW) {
    //Serial.println("P");
    // servo开始转
    increaseAngle = !increaseAngle;
    if(increaseAngle == true){     
      for(servoAngle == 0; servoAngle <= 90; servoAngle += 10){
          //LED亮，表示闹钟为开启状态
        ledState = true;
        digitalWrite(ledPin, ledState);

        flagServo.write(servoAngle);
        delay(500);

        if(servoAngle == 90 ){
        //LED关，表示闹钟为关闭状态
        ledState = false;
        digitalWrite(ledPin, ledState);

        increaseAngle = !increaseAngle;
      }
      }      
    }
    else{
      //LED关，表示闹钟为关闭状态
        ledState = false;
        digitalWrite(ledPin, ledState);

        servoAngle = 0;
        flagServo.write(servoAngle);
    }

    delay(1000);
  }

  // 更新上一次按钮状态
  lastbuttonState = buttonState;
  


  
}