monster_eyes_2.ino

/*

Create new file called images.h.
Copy the Arduino/C code variables to the right of the matrix picture.
Paste the code into the images.h file

https://github.com/xantorohara/led-matrix-editor
http://xantorohara.github.io/led-matrix-editor/
https://xantorohara.github.io/led-matrix-editor/#003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|00007e99997e0000|000000ffff000000|000000ffff000000|00007e99997e0000|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|003c429999423c00|00007e99997e0000|000000ffff000000|000000ffff000000|00007e99997e0000|003c429999423c00|003c429999423c00|00007e99997e0000|000000ffff000000|000000ffff000000|00007e99997e0000

*/

#include <LedControl.h>
#include "images.h"

#define BRIGHTNESS  10
#define DELAY       100

#define DIN_PIN     7
#define CS_PIN_1    6
#define CS_PIN_2    4
#define CLK_PIN     5

//#define NO_DUPLICATE 1

LedControl matrix1 = LedControl(DIN_PIN, CLK_PIN, CS_PIN_1);
#ifdef NO_DUPLICATE
LedControl matrix2 = LedControl(DIN_PIN, CLK_PIN, CS_PIN_2);
#endif

int count1 = 0;
int count2 = 0;

void setup() {
  // configure first matrix
  matrix1.clearDisplay(0);
  matrix1.shutdown(0, false);
  matrix1.setIntensity(0, BRIGHTNESS);

  // configure second matrix
  #ifdef NO_DUPLICATE
  matrix2.clearDisplay(0);
  matrix2.shutdown(0, false);
  matrix2.setIntensity(0, BRIGHTNESS);
  #endif
}

void loop() {
  displayImage(matrix1, IMAGES[count1]);
  if (++count1 >= IMAGES_LEN ) count1 = 0;
  #ifdef NO_DUPLICATE
  displayImage(matrix2, IMAGES2[count2]);
  if (++count2 >= IMAGES2_LEN ) count2 = 0;
  #endif
  delay(DELAY);
}

void displayImage(LedControl matrix, uint64_t image) {
  for (int i = 0; i < 8; i++) {
    byte row = (image >> i * 8) & 0xFF;
    for (int j = 0; j < 8; j++) {
      matrix.setLed(0, i, j, bitRead(row, j));
    }
  }
}