// FiveSeconds.ino
// Sketch from Arduino forum:
//   https://forum.arduino.cc/t/animating-my-mx7219-4-digit-module-using-md-parola-md-max72xx-lib/952396
//   With update of Reply #3.
//

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

#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
#define MAX_DEVICES 4
#define CLK_PIN 13
#define DATA_PIN 11
#define CS_PIN 3
//user defines/var
bool animate = 1;
unsigned long currentMillis = millis();
unsigned long previousMillis = millis();

// HARDWARE SPI
MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

uint8_t scrollSpeed = 25; // default frame delay value
textEffect_t scrollEffect = PA_SCROLL_LEFT;
textPosition_t scrollAlign = PA_LEFT;
uint16_t scrollPause = 2000; // in milliseconds

// Global message buffers shared by Serial and Scrolling functions
#define BUF_SIZE 75
char curMessage[BUF_SIZE] = {""};
char newMessage[BUF_SIZE] = {"Hello! Enter new message?"};
bool newMessageAvailable = true;


void setup()
{
    Serial.begin(38400);
    P.begin();
    P.displayText(newMessage, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect);
    P.setIntensity(0);
}


void loop()
{
    currentMillis = millis();
    if (currentMillis - previousMillis > 5000)
    {
        previousMillis = currentMillis;
        animate = !animate;
        P.displayReset();
    }
    if (animate)
    {
        P.displayText(newMessage, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect);    
        P.displayAnimate();
        while (!P.displayAnimate());
    }
    else
    {
        P.print("static");
    }    
}