#define PIN_LED 12
#define PIN_BUTTON 8

void sendMorse_char(int symbol) {
  int svetit = 0;
  int pause = 200;

  if (symbol == 1) {
    svetit = 200;
  }
  else if (symbol == 0) {
    svetit = 600;
  }
  else {
    svetit = 0;
  }

  for (int i = 0; i < 3; i++) {
    digitalWrite(PIN_LED, HIGH);
    delay(svetit);
    digitalWrite(PIN_LED, LOW);
    delay(pause);
  }

  delay(500); 
}

void setup() {
  // put your setup code here, to run once:
  pinMode(PIN_LED, OUTPUT);
  pinMode(13, OUTPUT);
  pinMode(PIN_BUTTON, INPUT_PULLUP);

  Serial.begin(9600);
}

void loop() {
  boolean button1 = !digitalRead(PIN_BUTTON);

  if (button1 == 1) {
    //Serial.println("Нажал SOS");
    digitalWrite(13, HIGH);
    sendMorse_char(1); // Send "S"
    sendMorse_char(0); // Send "O"
    sendMorse_char(1); // Send "S"
    digitalWrite(13, LOW);
  }
  else {
    //Serial.println("Не нажато");
  }
}