//We always have to include the library
#include "LedControl.h"

/*
 Now we need a LedControl to work with.
 pin 8 is connected to the DataIn 
 pin 10 is connected to the CLK 
 pin 9 is connected to LOAD 
 We have only a single MAX72XX.
 */
LedControl lc=LedControl(8,10,9,1);

/* we always wait a bit between updates of the display */
unsigned long delaytime=100;

void setup() {
  /*
   The MAX72XX is in power-saving mode on startup,
   we have to do a wakeup call
   */
  lc.shutdown(0,false);
  /* Set the brightness to a medium values */
  lc.setIntensity(0,8);
  /* and clear the display */
  lc.clearDisplay(0);
  
  pinMode(12, OUTPUT);
}

void testSequence() {
  // The decimal point is the most significant bit in this whole mess.
  // Segment g is the least significant bit.
  byte yautjaDigits[10] = {B00000000, B11110001, B11111101, B10100101, // Yautja digits 0-3
    B10111101, B11010111, B10011111, B11010011, // Yautja digits 4-7
    B11111101, // Yautja digit 8, which is the same as 2
    B11111111 // Yautja digit 9
  };
  for (int i = 1; i < 10; i++) {
    lc.setRow(0, 0, yautjaDigits[i]);
    lc.setRow(0, 1, yautjaDigits[i]);
    lc.setRow(0, 2, yautjaDigits[i]);
    lc.setRow(0, 3, yautjaDigits[i]);
    // Twiddle the LED pin to indicate that I changed something
    twinkle();
    delay(1000);
  }
}

void twinkle()
{
  for (int twinkle = 0; twinkle < 6; twinkle++) {
      digitalWrite(12, LOW);
      delay(100);
      digitalWrite(12, HIGH);
      delay(100);
      digitalWrite(12, LOW);
    }
}

void loop() { 
  lc.clearDisplay(0);
  digitalWrite(12, LOW);
  delay(1000);
  testSequence();
  digitalWrite(12, HIGH);
  delay(1000);
}