#define DATA_IN 11
#define CLK 13
#define CS 10

void sendData(byte address, byte value) {
  digitalWrite(CS, LOW);
  shiftOut(DATA_IN, CLK, MSBFIRST, address);
  shiftOut(DATA_IN, CLK, MSBFIRST, value);
  digitalWrite(CS, HIGH);
}

void clearDisplay() {
  for (byte i = 1; i <= 8; i++) {
    sendData(i, 0x00);
  }
}

void setRow(byte row, byte value) {
  sendData(row, value);
}

void setup() {
  pinMode(DATA_IN, OUTPUT);
  pinMode(CLK, OUTPUT);
  pinMode(CS, OUTPUT);
}

void loop() {
  byte pattern[] = {1, 2, 4, 8, 16, 32, 64, 128};
  /*
  for (int j = 0; j < 8; j++)
  {
    for (byte i = 0; i < 8; i++) {
      setRow(i + 1, pattern[i] + (j * 8));
    }
    delay(1000);
  }
  */
  for (byte i = 0; i < 8; i++) {
    setRow(i + 1, pattern[i]);
  }
  delay(1000);
  
}