#include <MD_MAX72xx.h>

#define MAX_DEVICES 2

const int maxX = 8;
const int maxY = 16;

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

#define VERT_PIN A0
#define HORZ_PIN A1
#define SEL_PIN  2


MD_MAX72XX mx = MD_MAX72XX(MD_MAX72XX::PAROLA_HW, CS_PIN, MAX_DEVICES);

void setup() {
  mx.begin();
  mx.control(MD_MAX72XX::INTENSITY, MAX_INTENSITY / 2);
  mx.clear();

  pinMode(VERT_PIN, INPUT);
  pinMode(HORZ_PIN, INPUT);
  pinMode(SEL_PIN, INPUT_PULLUP);
}

const int width = 8;
const int height = 8;

// 8x8 bitmap für den Buchstaben A
int bitmapA[height][width] = {
  {0, 0, 0, 1, 1, 0, 0, 0},
  {0, 0, 1, 0, 0, 1, 0, 0},
  {0, 1, 0, 0, 0, 0, 1, 0},
  {0, 1, 1, 1, 1, 1, 1, 0},
  {0, 1, 0, 0, 0, 0, 1, 0},
  {0, 1, 0, 0, 0, 0, 1, 0},
  {0, 1, 0, 0, 0, 0, 1, 0},
  {0, 1, 0, 0, 0, 0, 1, 0}
};

// 8x8 bitmap für den Buchstaben B
int bitmapB[height][width] = {
  {0, 1, 1, 1, 1, 0, 0, 0},
  {0, 1, 0, 0, 1, 1, 0, 0},
  {0, 1, 0, 0, 1, 1, 0, 0},
  {0, 1, 1, 1, 1, 0, 0, 0},
  {0, 1, 0, 0, 0, 1, 0, 0},
  {0, 1, 0, 0, 0, 1, 0, 0},
  {0, 1, 0, 0, 1, 1, 0, 0},
  {0, 1, 1, 1, 1, 0, 0, 0}
};

// 8x8 bitmap für den Buchstaben C
int bitmapC[height][width] = {
  {0, 0, 1, 1, 1, 1, 0, 0},
  {0, 1, 1, 0, 0, 1, 1, 0},
  {1, 0, 0, 0, 0, 0, 1, 0},
  {1, 0, 0, 0, 0, 0, 0, 0},
  {1, 0, 0, 0, 0, 0, 0, 0},
  {1, 0, 0, 0, 0, 0, 1, 0},
  {0, 1, 1, 0, 0, 1, 1, 0},
  {0, 0, 1, 1, 1, 1, 0, 0}
};

// 8x8 bitmap für herzi
int bitmap3[height][width] = {
  {0, 1, 0, 0, 0, 0, 1, 0},
  {1, 0, 1, 0, 0, 1, 0, 1},
  {1, 0, 0, 1, 1, 0, 0, 1},
  {1, 0, 0, 0, 0, 0, 0, 1},
  {0, 1, 0, 0, 0, 0, 1, 0},
  {0, 0, 1, 0, 0, 1, 0, 0},
  {0, 0, 0, 1, 1, 0, 0, 0},
  {0, 0, 0, 0, 0, 0, 0, 0}
};
// 8x8 bitmap für den Buchstaben H
int bitmapH[height][width] = {
  {0, 1, 1, 0, 0, 1, 1, 0},
  {0, 1, 1, 0, 0, 1, 1, 0},
  {0, 1, 1, 0, 0, 1, 1, 0},
  {0, 1, 1, 1, 1, 1, 1, 0},
  {0, 1, 1, 1, 1, 1, 1, 0},
  {0, 1, 1, 0, 0, 1, 1, 0},
  {0, 1, 1, 0, 0, 1, 1, 0},
  {0, 1, 1, 0, 0, 1, 1, 0}
};

// 8x8 bitmap für den Buchstaben E
int bitmapE[height][width] = {
  {0, 1, 1, 1, 1, 1, 0, 0},
  {0, 1, 1, 1, 1, 1, 0, 0},
  {0, 1, 1, 0, 0, 0, 0, 0},
  {0, 1, 1, 1, 1, 1, 0, 0},
  {0, 1, 1, 1, 1, 1, 0, 0},
  {0, 1, 1, 0, 0, 0, 0, 0},
  {0, 1, 1, 1, 1, 1, 0, 0},
  {0, 1, 1, 1, 1, 1, 0, 0}
};


void drawLetter(int sx, int sy, int status, int theBitmap[8][8]) {
  // Anzeigen des Buchstaben
  for (int y = 0; y < height; ++y) {
    for (int x = 0; x < width; ++x) {
      if (theBitmap[y][x]) {
        mx.setPoint(sx + y, sy + 7 - x, status);
      }
    }
  }
}

void drawSquare(int sx, int sy, int status) {
  for (int ox = 0; ox <= 3; ox = ox + 1 ) {
    for (int oy = 0; oy <= 3; oy = oy + 1) {
      mx.setPoint(sx + ox, sy + oy, status);
    }
  }
  mx.update();
}

int x = 0;
int y = 0;

int status = 1;

// the loop function runs over and over again forever
void loop() {

  if (digitalRead(SEL_PIN) == LOW) {
    mx.clear();
  }

  x = 0;
  y = 0;
  drawLetter(x, y, 1, bitmapE);
  mx.update();
  drawLetter(x, y + 8, 1, bitmapH);
  mx.update();
  drawLetter(x, y + 16, 1, bitmap3);
  mx.update();
  drawLetter(x, y + 24, 1, bitmap3);


  mx.update();
  delay(500);
  //  drawSquare(x,y,0);
  drawLetter(x, y, 0, bitmap3);

  y = y + 1 ;
}