// test program for three cascaded AS1107
// if you got a different configuration you need to
// modify the library itself.

#include <AS1107.h>

// Arduino pins
const byte CsnPin = 2 ; // Chip select (Low active)
const byte ClkPin = 3 ; // Serial Clock
const byte DataPin = 4 ; // Serial Data

byte buffer [ 24 ] ; // Screen buffer (No. of modules * 8)
AS1107 matrix ( CsnPin, ClkPin, DataPin ) ;

const byte d = 0 ;
int count= 1 ;
void setup ( )
{
matrix. Init ( buffer ) ;
matrix. SetScrollText ( " Three 8x8 LED dot matrix modules driven by three AS1107 LED controllers using just four I/O pins of the Arduino for serial data. That is surprisingly fast, look:" , 1 ) ;
}

void loop ( )
{
if ( matrix. TextScroll ( ) ) {
delay ( 2000 ) ;
for ( int i= 0 ; i<= 7 ; i++ ) {
matrix. ShiftUp ( ) ;
delay ( 50 ) ;
matrix. Update ( ) ;
}
for ( int i= 0 ; i<= 10 ; i++ ) {
CirclePulsate ( ) ;
}
StarsDown ( ) ;
for ( int i= 0 ; i<= 5 ; i++ ) {
Rotator1 ( ) ;
}
StarsRight ( ) ;
for ( int i= 0 ; i<=AS1107:: Maxx ; i++ ) {
matrix. ShiftRight ( ) ;
delay ( 5 ) ;
matrix. Update ( ) ;
}
for ( int i= 1 ; i<= 3 ; i++ )
{
bounce ( ) ;
}
}
delay ( 10 ) ;
}

void CirclePulsate ( )
{
for ( int i= 0 ; i<= 15 ; i++ ) {
matrix. Clear ( ) ;
matrix. DrawEllipse ( AS1107:: Maxx / 2 , 4 ,i,i ) ;
matrix. Update ( ) ;
delay ( d ) ;
}
}
void StarsDown ( )
{
for ( int i= 0 ; i<= 200 ; i++ ) {
matrix. ShiftDown ( ) ;
matrix. SetLed ( ( byte ) random ( 0 ,AS1107:: Maxx + 1 ) , 0 , 1 ) ;
matrix. Update ( ) ;
delay ( d ) ;
}
}
void StarsRight ( )
{
for ( int i= 0 ; i<= 200 ; i++ ) {
matrix. ShiftRight ( ) ;
matrix. SetLed ( 0 , ( byte ) random ( 0 ,AS1107:: Maxy + 1 ) , 1 ) ;
matrix. Update ( ) ;
delay ( d ) ;
}
}
void Rotator1 ( )
{
for ( int i= 0 ; i<=AS1107:: Maxx - 1 ; i++ ) {
matrix. Clear ( ) ;
matrix. DrawLine ( i, 0 ,AS1107:: Maxx -i,AS1107:: Maxy ) ;
matrix. Update ( ) ;
delay ( d ) ;
}
for ( int i= 0 ; i<= 6 ; i++ ) {
matrix. Clear ( ) ;
matrix. DrawLine ( AS1107:: Maxx ,i, 0 , 7 -i ) ;
matrix. Update ( ) ;
delay ( d ) ;
}
}

void bounce ( )
{
int rad= 0 ;
float y=random ( 0 ,AS1107:: Maxy + 1 ) ;
float x=random ( 0 ,AS1107:: Maxx + 1 ) ;
float xacc=random ( 0 , 5 ) - 2 ;
float yacc=random ( 0 , 5 ) - 2 ;
float yg= 0 . 08 ;
if ( xacc == 0 ) xacc == 1 ;
if ( yacc == 0 ) yacc == - 1 ;
for ( int i= 1 ; i<= 300 ; i++ )
{
x+=xacc;
y+=yacc;
yacc += yg;
if ( x >= ( AS1107:: Maxx -rad ) ) {
xacc = -xacc* 0 . 9 ;
x= AS1107:: Maxx -rad;
}
else if ( x <= rad ) {
xacc = -xacc* 0 . 8 ;
x= rad;
}
if ( y >= ( AS1107:: Maxy -rad ) ) {
yacc = - ( yacc* 0 . 80 ) ;
y= AS1107:: Maxy -rad;
}
else if ( y <= rad ) {
yacc = -yacc* 0 . 8 ;
y= rad;
}
matrix. Clear ( ) ;
matrix. SetLed ( x,y, 1 ) ;
matrix. Update ( ) ;
}
}