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

#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES 4

#define DATA_PIN 11
#define CLK_PIN 13
#define CS_PIN 10

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

char message[50] = "Hello, Munna,   How are YOU";

void setup() {
  Serial.begin(115200);

  P.begin();
  P.setIntensity(5);      // Brightness (0-15)
  P.displayClear();

  P.displayText(
    message,
    PA_CENTER,
    50,
    1000,
    PA_SCROLL_LEFT,
    PA_SCROLL_LEFT
  );

  Serial.println("Type a message and press Enter...");
}

void loop() {

  if (P.displayAnimate()) {
    P.displayReset();
  }

  if (Serial.available()) {

    String txt = Serial.readStringUntil('\n');
    txt.trim();

    if (txt.length() > 0) {
      txt.toCharArray(message, sizeof(message));

      P.displayClear();
      P.displayText(
        message,
        PA_CENTER,
        50,
        1000,
        PA_SCROLL_LEFT,
        PA_SCROLL_LEFT
      );

      P.displayReset();
    }
  }
}