HIKVISION DVR ALARM TEXT SCROLLING DISPLAY MAX7219 DOT MATRIX USING ARDUINO UNO

How to Enable Alarm Port Event notification soon Hikvision DVR NVR, The Alarm information notification Text will show on Matrix Dot Display
Arduino Uno : https://amzn.to/3lv9LXw
Matrix Display : https://amzn.to/3dg2JkV
220Ohm Resistor : https://amzn.to/3rzixro

// Program to exercise the MD_MAX72XX library
//
// Uses most of the functions in the library
#include <MD_MAX72xx.h>

// Turn on debug statements to the serial output
#define  DEBUG  1
#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
#if  DEBUG
#define PRINT(s, x) { Serial.print(F(s)); Serial.print(x); }
#define PRINTS(x) Serial.print(F(x))
#define PRINTD(x) Serial.println(x, DEC)
const int buttonPin = 2;     // the number of the pushbutton pin
int buttonState = 0;         // variable for reading the pushbutton status
#else
#define PRINT(s, x)
#define PRINTS(x)
#define PRINTD(x)

#endif

// Define the number of devices we have in the chain and the hardware interface
// NOTE: These pin numbers will probably not work with your hardware and may
// need to be adapted
#define MAX_DEVICES  4

#define CLK_PIN   13  // or SCK
#define DATA_PIN  11  // or MOSI
#define CS_PIN    10  // or SS

// SPI hardware interface
MD_MAX72XX mx = MD_MAX72XX(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);
// Specific SPI hardware interface
//MD_MAX72XX mx = MD_MAX72XX(HARDWARE_TYPE, SPI1, CS_PIN, MAX_DEVICES);
// Arbitrary pins
//MD_MAX72XX mx = MD_MAX72XX(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

// We always wait a bit between updates of the display
#define  DELAYTIME  100  // in milliseconds


void scrollText(const char *p)
{
  uint8_t charWidth;
  uint8_t cBuf[8];  // this should be ok for all built-in fonts

  PRINTS("\nScrolling text");
  mx.clear();

  while (*p != '\0')
  {
    charWidth = mx.getChar(*p++, sizeof(cBuf) / sizeof(cBuf[0]), cBuf);

    for (uint8_t i=0; i<=charWidth; i++)  // allow space between characters
    {
      mx.transform(MD_MAX72XX::TSL);
      if (i < charWidth)
        mx.setColumn(0, cBuf[i]);
      delay(DELAYTIME);
    }
  }
}


void bounce()
// Animation of a bouncing ball
{
  const int minC = 0;
  const int maxC = mx.getColumnCount()-1;
  const int minR = 0;
  const int maxR = ROW_SIZE-1;

  int  nCounter = 0;

  int  r = 0, c = 2;
  int8_t dR = 1, dC = 1;  // delta row and column

  PRINTS("\nBouncing ball");
  mx.clear();

  while (nCounter++ < 200)
  {
    mx.setPoint(r, c, false);
    r += dR;
    c += dC;
    mx.setPoint(r, c, true);
    delay(DELAYTIME/2);

    if ((r == minR) || (r == maxR))
      dR = -dR;
    if ((c == minC) || (c == maxC))
      dC = -dC;
  }
}


void setup()

{

    // initialize the pushbutton pin as an input:

  mx.begin();

#if  DEBUG
  Serial.begin(57600);
#endif
  PRINTS("\n[MD_MAX72XX Test & Demo]");
//  scrollText("MD_MAX72xx Test  ");
}

void loop()

{
  pinMode(buttonPin, INPUT);
buttonState = digitalRead(buttonPin);
if (buttonState == HIGH) {
 scrollText("ALARM");
 delay(1000);
}
else
{
  bounce();
}
}