PS2 JOYSTICK SHIELD V2.0 code example

char button0=3;
char button1=4; 
char button2=5; 
char button3=6;
char joybutton=2;
 
void setup(void)
{
  //set all as inputs
  pinMode(joybutton, INPUT); 
  pinMode(button0, INPUT);      
  pinMode(button1, INPUT);     
  pinMode(button2, INPUT);
  pinMode(button3, INPUT);
 
  //set all high
  digitalWrite(joybutton, HIGH);
  digitalWrite(button0, HIGH);  
  digitalWrite(button1, HIGH);  
  digitalWrite(button2, HIGH);
  digitalWrite(button3, HIGH);
 
  Serial.begin(9600); 
}
 
void loop(void)
{
  Serial.print(analogRead(0));
  Serial.print(",");
  Serial.print(analogRead(1));
  Serial.print(",");
 
  //Read the value of the buttons and print it on the serial port.
  Serial.print(digitalRead(button0)); 
  Serial.print(digitalRead(joybutton));    
  Serial.print(digitalRead(button0)); 
  Serial.print(digitalRead(button1));  
  Serial.print(digitalRead(button2));  
  Serial.println(digitalRead(button3)); 
 
  delay(1000);
}