// MCU BASIC: https://www.basic4mcu.com
// DateTime : 2019-11-16 오전 10:04:01
// by Ok-Hyun Park
//
void setup(){
  pinMode(7,OUTPUT);
  pinMode(3,INPUT);
  Serial.begin(9600);
}
//
void loop(){
  int readValue=digitalRead(3); Serial.println(readValue);
  if(readValue==HIGH){
    digitalWrite(7,HIGH);
    for(int i=0;i<20;i++){ delay(100); if(digitalRead(3)==0)return; }
    //
    for(int time=50; time<300; time+=50){
      digitalWrite(7,HIGH); delay(time);
      digitalWrite(7,LOW);  delay(time);
      if(digitalRead(3)==0)return;
    }
    //
    digitalWrite(7,LOW);
    for(int i=0;i<10;i++){ delay(100); if(digitalRead(3)==0)return; }
  }
  else{ digitalWrite(7,LOW); }
}