#define LED 5
#define BT 2

bool pressed = 0;
bool flag = 0;
bool led = 0;
long int ml = 0;
long int ml2 = 0;
long int ispress = 0;

void ledd(){
  if(millis() - ml2 > 500){
    led = !led;
    ml2 = millis();
  }
}

void setup() {
  Serial.begin(9600);
  pinMode(LED, OUTPUT);
}

void loop() {
  if(digitalRead(BT) == HIGH){
    if(millis() - ml > 300){
      ml = millis();
      led = !led;
      flag = 0;
    }
    if(millis() - ispress > 3000){
      flag = 1;
      ispress = millis();
    }
  }
  if(flag) ledd();
  else digitalWrite(LED, led);


}