#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>

int clkPin = 52;
int dataPin = 51;
int csPin = 53;
int buttonPin = 2;

MD_Parola P = MD_Parola(MD_MAX72XX::PAROLA_HW, csPin, 11);

char swin[] = { "I love Swinburne " };
char name[] = { "   Emily Dunn "};

int mil = 0;
int lastMil = 0;

void setup() {

  P.begin();
  //External interrupt for button rising
  attachInterrupt(digitalPinToInterrupt(buttonPin), dispName, RISING);

}

void loop() {

  //Scroll text across LED matrix
  if (P.displayAnimate()) {
    P.displayText(swin, PA_LEFT, 25, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
  }

}

//Interrupt function
void dispName() {

  //Manual debounce
  mil = millis();
  if (mil - lastMil > 50) {
    //Clear display and scroll name across LED matrix
    P.displayClear();
    P.displayText(name, PA_LEFT, 25, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
    lastMil = mil;

  }

}