/*
Q3. Connect DS1307 RTC and LED Matrix with “chain” 
attribute is 5 to Arduino Mega. Write a code to display 
the current time from DS1307 RTC to LED Matrix with 
the speed value is 10, pause value is 100, and text 
alignment is PA_CENTER. (require demonstration)
*/

// Header file includes
#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>

// 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 HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES 5 // Define the number of displays connected

#define CLK_PIN    52 // CLK or SCK
#define DATA_PIN   51 // DATA or MOSI
#define CS_PIN     53 // CS or SS

// Hardware SPI connection
MD_Parola P = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

#include "RTClib.h"
RTC_DS1307 rtc;
//int hour, minute, second =0;
int hour, minute, second;


void setup() {
  // put your setup code here, to run once:
 Serial.begin(115200);
 P.begin();
  if(!rtc.begin())
    {
      Serial.println("Coudn't find RTC");
      Serial.flush();
      abort();
    }

}

void loop() {
  // put your main code here, to run repeatedly:
  DateTime now=rtc.now();
  hour=now.hour();
  minute = now.minute();
  second=now.second();

  String MyClk=String(hour)+":"+ String(minute)+":"+String(second);
Serial.print("Time:  ");
Serial.println(MyClk);
char *strClk = MyClk.c_str();
 /*
  int length=txt.length()+1;
  char txt1(length);
  txt.toCharArray (txt1,length);
*/
  if (P.displayAnimate())
    { 
      //P.displayText(strClk , PA_CENTER, 10, 100, PA_SCROLL_LEFT);
      P.displayText(strClk, PA_CENTER, 10, 100, PA_PRINT, PA_NO_EFFECT);
    }
}