#define btn 13
#define LED1 26
#define LED2 27
#define LED3 14
#define LED4 12
#define jeda 300

bool state=0;
// void IRAM_ATTR adaIntrupsi(){ //tergantung espnya
//     state = !state; //mengembalikan logic
// }

void setup(){
  pinMode(LED1,OUTPUT);  digitalWrite(LED1,HIGH);
  pinMode(LED2,OUTPUT);  digitalWrite(LED2,HIGH);
  pinMode(LED3,OUTPUT);  digitalWrite(LED3,HIGH);
  pinMode(LED4,OUTPUT);  digitalWrite(LED4,HIGH);
  pinMode(btn,INPUT_PULLUP);
  // attachInterrupt(btn, adaIntrupsi, FALLING);
}
void loop() {
  if (digitalRead(btn)==0){
     state = !state;  //membalikan logic
     delay(1000);
     }
    if(state==1){
    digitalWrite(LED1,LOW);
    digitalWrite(LED2,HIGH);
    digitalWrite(LED3,HIGH);
    digitalWrite(LED4,HIGH);
    delay(jeda);
    digitalWrite(LED1,HIGH);
    digitalWrite(LED2,LOW);
    digitalWrite(LED3,HIGH);
    digitalWrite(LED4,HIGH);
    delay(jeda);
    digitalWrite(LED1,HIGH);
    digitalWrite(LED2,HIGH);
    digitalWrite(LED3,LOW);
    digitalWrite(LED4,HIGH);
    delay(jeda);
    digitalWrite(LED1,HIGH);
    digitalWrite(LED2,HIGH);
    digitalWrite(LED3,HIGH);
    digitalWrite(LED4,LOW);
    delay(jeda);
    }

}