const int botao = 6;
const int led = 10;

void setup()
{
  pinMode(botao, INPUT);
  pinMode(led, OUTPUT);
  digitalWrite(botao, HIGH);
}

void loop()
{
  do{
    digitalWrite(led, HIGH);
    delay(2000);
    digitalWrite(led, LOW);
    delay(2000);
   }while(digitalRead(botao));
}