#define LED1 18
#define PB1 27
#define LED2 19
#define PB2 25
void setup()
{
  Serial.begin(115200);
  Serial.println("Blink program started");

  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(PB1, INPUT);
  pinMode(PB2, INPUT);
}
void loop()
{
  if (digitalRead(PB1) == 1)
  {
    digitalWrite(LED1, HIGH);
  }    
  else
  {
    digitalWrite(LED1, LOW);
  }

  if (digitalRead(PB2) == 1)
  {
    digitalWrite(LED2, HIGH);
  }    
  else
  {
    digitalWrite(LED2, LOW);
  }
}