#define LED 13

// the granularity of scheduler is 2 minutes,
// therefor we define the BI_MINUTE to be 2*60 seconds
#define BI_MINUTE (2*60*1000)

// our scheduler loop every 24 hour.
// one hour is represented by 1 unsigned int
// each bit of the hour represent one BI_MINUTE.
// the output of the scheduler is ON if one bit is set, OFF otherwise.
unsigned int scheduler[24] = {
  0b00000000000000000111111111111111, // here we set the output ON from 0 to 15th biminute so half of the hour
  0, // all other hours are set to 0
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
};

// variables to keep track of the current our and biminute.
int hour=0;
int biminute=0;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  delay(1000);
  Serial.println("Starting.");
  pinMode(LED, OUTPUT);
}

void loop() { 
  if ((scheduler[hour] >> biminute) & 1) {
    digitalWrite(LED, HIGH); 
    Serial.println("Scheduler: ON");
  } else {
     digitalWrite(LED, LOW);
    Serial.println("Scheduler: OFF");
  }

  biminute += 1;
  if(biminute >= 30) {
    biminute = 0;
    hour += 1;
    if(hour >=  24) {
      hour = 0;
    }
  }
  delay(BI_MINUTE);
}

/*
void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(LED, HIGH);
  for(int i=0; i < 10; ++i) {
    delay(500);
    print_light();
  }
  digitalWrite(LED, LOW);
  for(int i=0; i < 10; ++i) {
    delay(500);
    print_light();
  }
}
*/

void print_light() {
  int val = analogRead(A0);
  Serial.print("Light: ");
  Serial.println(val);
}