/*
  16 bit Shift Register Demo
*/

// pin definitions
const int CLOCK_PIN = 12;
const int LATCH_PIN = 11;
const int DATA_PIN  = 10;

void writeShiftValue(int number)  {
  digitalWrite(LATCH_PIN, LOW);
  shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, number);
  shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, number >> 8);
  digitalWrite(LATCH_PIN, HIGH);
}

void setup() {
  Serial.begin(115200);
  pinMode(DATA_PIN, OUTPUT);
  pinMode(CLOCK_PIN, OUTPUT);
  pinMode(LATCH_PIN, OUTPUT);
}

void loop() {
  for (int i = 0; i < 16; i++)  {
    writeShiftValue(1 << i);
    delay(250);
  }
  writeShiftValue(0xAAAA);
  delay(1000);
  writeShiftValue(0x5555);
  delay(1000);
}