#define MAX7219_Data_IN 8
#define MAX7219_Chip_Select  10
#define MAX7219_Clock 9

#define OP_NOOP   0x00
#define OP_DIGIT0 0x01
#define OP_DIGIT1 0x02
#define OP_DIGIT2 0x03
#define OP_DIGIT3 0x04
#define OP_DIGIT4 0x05
#define OP_DIGIT5 0x06
#define OP_DIGIT6 0x07
#define OP_DIGIT7 0x08
#define OP_DECODEMODE  0x09
#define OP_INTENSITY   0x0a
#define OP_SCANLIMIT   0x0b
#define OP_SHUTDOWN    0x0c
#define OP_DISPLAYTEST 0x0f

void shift(byte send_to_address, byte send_this_data)
{
  digitalWrite(MAX7219_Chip_Select, LOW);//digunakan untuk mengaktifkan ic
  shiftOut(MAX7219_Data_IN, MAX7219_Clock, MSBFIRST, send_to_address);//digunakan untuk mengirim data alamat
  shiftOut(MAX7219_Data_IN, MAX7219_Clock, MSBFIRST, send_this_data);//kemudian alamatnya
  digitalWrite(MAX7219_Chip_Select, HIGH);
}

void setup() {
  Serial.begin(115200);

  pinMode(MAX7219_Data_IN, OUTPUT);
  pinMode(MAX7219_Chip_Select, OUTPUT);
  pinMode(MAX7219_Clock, OUTPUT);
  digitalWrite(MAX7219_Clock, HIGH);
  delay(200);

  //Setup of MAX7219 chip
  shift(OP_DISPLAYTEST, 0x00); //display test register - test mode off
  shift(OP_SHUTDOWN   , 0x01); //shutdown register - normal operation
  shift(OP_SCANLIMIT  , 0x07); //scan limit register - display digits 0 thru 7
  shift(OP_INTENSITY  , 0x0f); //intensity register - max brightness
  shift(OP_DECODEMODE , 0xff); //decode mode register - CodeB decode all digits

}

void loop() {

  Serial.println("BCD without decimal point");
  shift(OP_DIGIT7, 0); //digit 7 (leftmost digit) data
  shift(OP_DIGIT6, 0);
  shift(OP_DIGIT5, 0);
  shift(OP_DIGIT4, 0);
  shift(OP_DIGIT3, 1);
  shift(OP_DIGIT2, 2);
  shift(OP_DIGIT1, 3);
  shift(OP_DIGIT0, 4); //digit 0 (rightmost digit) data
  delay(1000);

}