int clockPin = 8;
int latchPin = 9;
int dataPin = 10;

#define REG_SL 2
#define REG_CK 3
#define REG_DI 5

byte n = 0;
byte x = 0;

bool ledState = false;  // Menyimpan status LED

void setup() {
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);

  pinMode(REG_SL, OUTPUT);
  pinMode(REG_CK, OUTPUT);
  pinMode(REG_DI, INPUT);

  Serial.begin(9600);
}

void loop() {
  // Acquire input ports
  digitalWrite(REG_SL, HIGH);
  delay(1);
  digitalWrite(REG_SL, LOW);
  delay(1);
  digitalWrite(REG_SL, HIGH);

  // Read input values
  for (int i = 0; i < 8; i++) {
    bitWrite(n, i, digitalRead(REG_DI));
    digitalWrite(REG_CK, LOW);
    delay(1);
    digitalWrite(REG_CK, HIGH);
    delay(1);
  }

  for (int i = 0; i < 8; i++) {
    bitWrite(x, i, digitalRead(REG_DI));
    digitalWrite(REG_CK, LOW);
    delay(1);
    digitalWrite(REG_CK, HIGH);
    delay(1);
  }

  Serial.print("Input (n): ");
  Serial.println(n, BIN);
  Serial.print("Output (x): ");
  Serial.println(x, BIN);

  // Toggle LED state when button is pressed
  if (n & B00000001) {  // Change this condition based on your button state
    if (!ledState) {
      ledState = true;
      digitalWrite(13, HIGH);  // Assuming LED is connected to pin 13
    }
  } else {
    ledState = false;
    digitalWrite(13, LOW);
  }

  // Send output bytes to output ports
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, x);
  shiftOut(dataPin, clockPin, LSBFIRST, n);
  digitalWrite(latchPin, HIGH);
  delay(1);
}