// Demonstrates one way to create a double height display using Parola.
//
// Largely based on code shared by arduino.cc forum user Arek00, 26 Sep 2015.
// Video of running display can be seen at https://www.youtube.com/watch?v=7nPCIMVUo5g
//
// The upper and lower portions are managed as 2 zones 'stacked' on top of each other
// so that the module numbers are in the sequence shown below:
//
// * Modules (like FC-16) that can fit over each other with no gap
//  n n-1 n-2 ... n/2+1   <- this direction top row
//  n/2 ... 3  2  1  0    <- this direction bottom row
//
// * Modules (like Generic and Parola) that cannot fit over each other with no gap
//  n/2+1 ... n-2 n-1 n   -> this direction top row
//  n/2 ... 3  2  1  0    <- this direction bottom row
//
// Each font displays letters for either top or bottom half of the message. Sending the
// same string to both zones creates the complete message
// on the display.
//
// MD_MAX72XX library can be found at https://github.com/MajicDesigns/MD_MAX72XX
//

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

#define DEBUG 0

// 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::FC16_HW
#define MAX_ZONES 2
#define ZONE_SIZE 4
#define MAX_DEVICES 8
#define SCROLL_SPEED  50

#define ZONE_UPPER  1
#define ZONE_LOWER  0

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

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

// Hardware adaptation parameters for scrolling
bool invertUpperZone = false;

#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
char *msg[] =
{
  "ih",
  "ih"
};

void setup(void)
{
  invertUpperZone = (HARDWARE_TYPE == MD_MAX72XX::GENERIC_HW || HARDWARE_TYPE == MD_MAX72XX::PAROLA_HW);

  Serial.begin(9600);
  Serial.println("[Double Height demo start]");


  // initialise the LED display
  P.begin(MAX_ZONES);

  // Set up zones for 2 halves of the display
  // Each zone gets a different font, making up the top
  // and bottom half of each letter
  P.setZone(ZONE_LOWER, 0, ZONE_SIZE - 1);
  // P.setFont(ZONE_LOWER, BigFontLower);

  P.setZone(ZONE_UPPER, ZONE_SIZE, MAX_DEVICES-1);
  // P.setFont(ZONE_UPPER, BigFontUpper);
  P.setCharSpacing(P.getCharSpacing() * 2); // double height --> double spacing
 
  // if (invertUpperZone)
  // {
  //   P.setZoneEffect(ZONE_UPPER, true, PA_FLIP_UD);
  //   P.setZoneEffect(ZONE_UPPER, true, PA_FLIP_LR);
  // }
}

void loop(void)
{


  // Run the animation and then check if BOTH zones have
  // completed. The animations are not the same length due
  // to upper/lower effects being displayed differently.
  P.displayAnimate();

  if (P.getZoneStatus(ZONE_LOWER) && P.getZoneStatus(ZONE_UPPER))
  {

      P.setFont(ZONE_LOWER, RomanFont);
      P.setFont(ZONE_UPPER, RomanFont);

    P.displayZoneText(ZONE_LOWER, msg[0], PA_LEFT, SCROLL_SPEED, 0, PA_SCROLL_RIGHT, PA_SCROLL_RIGHT);
    P.displayZoneText(ZONE_UPPER, msg[0], PA_LEFT, SCROLL_SPEED, 0, PA_SCROLL_RIGHT, PA_SCROLL_RIGHT);




    // synchronise the start
    P.displayClear();
    P.synchZoneStart();
  }
}