LCDemo Cascaded Devices
#include <LedControl.h>
/*F********************************************************************
* always have to include library
**********************************************************************/
#include "LedControl.h"

//************************* DEFINES ************************************

//************************* PROTOTYPES ************************************

//************************* VARIABLES ************************************
/*I*******************************************************
NOW NEED A lEDcONTROL TO WORK WITH.
***** THESE PIN NUMBERS WILL PROBABLY NOT WORK WITH YOUR HARDWARE *****
pin 12 is connected to the DataIn 
pin 11 is connected to the CLK 
pin 10 is connected to LOAD 
***** PLEASE SET THE NUMBER OF DEVICES YOU HAVE *****
BUT MAXIMUM DEFAULT OF 8 MAX72XX WIL ALSO WORK.
********************************************************/
LedControl lc=LedControl( 12, 11, 10, 8);

unsigned long delaytime =500; // ALWAYS WAIT A BIT BETWEEN UPDATES OF DISPLAy

/*I******************************************************* 
HAVE MORE THAN ONE DEVICE.  BUT ALL OF THEM HAVE TO BE INITIALIZED INDIVIDUALLY
********************************************************/

/*F********************************************************************
*
**********************************************************************/
void 
setup() 
{
	// ALREADY SET DEVICE CNT WHEN LEDCONTROL CREATED 
	int devices = lc.getDeviceCount();
	for( int address = 0; address < devices; address++)// INIT ALL DEVS IN LOOP
	{
		lc.shutdown( address, false ); // MAX72XX STARTS IN POWER-SAVING MODE 
		lc.setIntensity( address, 8 );   // SET BRIGHTNESS TO A MEDIUM VALUE
		lc.clearDisplay( address );                     // AND CLEAR DISPLAY
	}
}
/*F********************************************************************
*
**********************************************************************/
void 
loop() 
{
	int devices=lc.getDeviceCount();         // READ NUMBER CASCADED DEVICES
	// HAVE TO INIT ALL DEVICES IN A LOOP
	for( int row =0; row < 8; row++) 
	{
		for( int col = 0; col < 8; col++) 
		{
			for( int address = 0; address < devices; address++) 
			{
				delay( delaytime );
				lc.setLed( address, row, col, true);
				delay( delaytime );
				lc.setLed( address, row, col, false);
			}
		}
	}
}