Running Text and Clock with XIAO ESP32S3 and LED MAX7219

#include <MD_Parola.h>
#include <MD_MAX72XX.h>
#include <WiFi.h>
#include <time.h>
#include <SPI.h>

// WiFi credentials
const char* ssid = "YOUR_SSID";
const char* password = "YOUR_PASSWORD";

// MAX7219 config
#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
#define MAX_DEVICES 4
#define DATA_PIN  6
#define CLK_PIN   7
#define CS_PIN    5

MD_Parola display = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

// Text to be displayed (can be changed according to needs)
const char* runningText = "SELAMAT DATANG DI UNIVERSITAS RAHARJA";

unsigned long lastSwitch = 0;
int mode = 0; // 0: jam, 1: running text
const int switchInterval = 12000; // change the display every 12 seconds

void setup() {
  Serial.begin(115200);
  display.begin();
  display.setIntensity(8);
  display.displayClear();

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nWiFi Connected");

  // Synchronizing NTP time to GMT+7
  configTime(7 * 3600, 0, "pool.ntp.org", "time.nist.gov");

  // Show the scroll while waiting for available time
  display.displayScroll("Connecting time...", PA_LEFT, PA_SCROLL_LEFT, 50);
  while (!time(nullptr)) {
    delay(1000);
  }
  display.displayClear();
}

void loop() {
  unsigned long nowMillis = millis();

  // Change the mode every few seconds
  if (nowMillis - lastSwitch > switchInterval) {
    mode = 1 - mode; // toggle between 0 and 1
    lastSwitch = nowMillis;
    display.displayClear();
  }

  if (mode == 0) {
    // Digital clock mode
    static char timeStr[9]; // "HH:MM:SS"
    time_t now = time(nullptr);
    struct tm* tm_info = localtime(&now);
    snprintf(timeStr, sizeof(timeStr), "%02d:%02d:%02d", tm_info->tm_hour, tm_info->tm_min, tm_info->tm_sec);

    display.setTextAlignment(PA_CENTER);
    display.print(timeStr);

    delay(1000); // update time every second
  } else {
    // Scrolling text mode
    if (display.displayAnimate()) {
      display.displayScroll(runningText, PA_LEFT, PA_SCROLL_LEFT, 50);
    }
  }
}