/**
   Blinking LED simulation

   When no button is pressed, The Red LED blinks on and off during 1 second. 
   500ms for each state.

   When button1(Flash) is pressed, led is on till button release.

   When button2(Black) is pressed, led is off till released.
*/
//initialize pin variable  used for LED and Buttons
const int LED = 8;
const int Flash = 2;
const int Black = 13;
//initialize the buttons states
int FlashState = 0;
int BlackState = 0;

// Attempt to solve delay problem
//unsigned long millis_now;

void setup(){
  pinMode(LED, OUTPUT);
  pinMode(Flash, INPUT);
  pinMode(Black, INPUT);
}
void loop(){
  Serial.begin(9600);
  FlashState = digitalRead(Flash);
  BlackState = digitalRead(Black);
  if (FlashState == 1)
  {
      digitalWrite(LED, HIGH);
  }
  else if (BlackState == 1)
  {
      digitalWrite(LED, LOW);
  }
  else
  {
    digitalWrite(LED, HIGH);
    delay(500);
  //output low signal
    digitalWrite(LED, LOW);
    delay(500);
  }
}