Swap between two messages on LED matrix

Other Hardware LEDs and Multiplexing
1

I have just finished this project and thought I would share it. I thought it maybe quite useful. If anyone can see anyway enhance this project or improve the sketch please let me know. Also after the display scrolls I would like it to stop for a few seconds, how would I do that?

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

#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
#define MAX_DEVICES 4
#define CS_PIN 10
#define CLK_PIN 13
#define DIN_PIN 11
#define SPEED 50

MD_Parola myDisplay = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

#define buttonPin A0

bool buttonVal;
bool buttonState;
bool messageState = 0;
bool lastButtonState = 1;

unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;

void setup() {
  myDisplay.begin();
  myDisplay.setIntensity(4);
  myDisplay.displayClear();
  pinMode(buttonPin, INPUT_PULLUP);
}

void DisplayMessage(char msg[]) {

  if (myDisplay.displayAnimate()) {
    myDisplay.displayScroll(msg, PA_CENTER, PA_SCROLL_LEFT, SPEED);
    myDisplay.displayReset();
  }
}

void loop() {

  buttonVal = digitalRead(buttonPin);
  if (buttonVal != lastButtonState) {
    lastDebounceTime = millis();
  }
  if ((millis() - lastDebounceTime) > debounceDelay) {
    if (buttonVal != buttonState) {
      buttonState = buttonVal;
      if (buttonState == 0) {
        messageState = !messageState;
      }
    }
  }
  if (messageState == 0) {
    DisplayMessage("Andy is IN");
  }
  if (messageState == 1) {
    DisplayMessage("Andy is OUT");
  }
  lastButtonState = buttonVal;
}
2

what is the difference to parola example sketch? or to internet tutorials?

3

See if this code meets your needs:

4

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