#include <Servo.h>
int bp = 7;
int rp = 8;
int pos = 0;
int ls = HIGH;
Servo myservo;

void setup(){
  Serial.begin(115200);
  pinMode(bp, INPUT_PULLUP);
  pinMode(rp, OUTPUT);
  myservo.attach(9);
}

void loop(){
  int value = digitalRead(bp);
  if(ls!=value){
    ls=value;
    if(value==HIGH){
      digitalWrite(rp,LOW);
      Serial.println("Released");
      for(pos=0;pos<=180;pos+=1){
        myservo.write(pos);
        delay(150);
      }
      for(pos=180;pos>=0;pos-=1){
        myservo.write(pos);
        delay(15);
      }
    }
    else{
      digitalWrite(rp, HIGH);
      Serial.println("Pressed");
    }
  }
}