// Define pin constants
const int SRCLR_PIN = 2;
const int SER_PIN = 3;
const int RCK_PIN = 4;
const int SRCK_PIN = 5;

void setup() {
  // Initialize pins as outputs
  pinMode(SRCLR_PIN, OUTPUT);
  pinMode(SER_PIN, OUTPUT);
  pinMode(RCK_PIN, OUTPUT);
  pinMode(SRCK_PIN, OUTPUT);
}

void loop() {
  // Shift data into TPIC6A595DW to update LED states
  updateLEDs();
  delay(1000); // Adjust delay as needed
}

void updateLEDs() {
  // Set SRCLR low to clear shift register
  digitalWrite(SRCLR_PIN, LOW);
  // Shift data into TPIC6A595DW
  shiftOut(SER_PIN, SRCK_PIN, MSBFIRST, 0b00001111); // Example data, adjust as needed
  // Latch data to output pins
  digitalWrite(RCK_PIN, HIGH);
  digitalWrite(RCK_PIN, LOW);
}