#include <LedControl.h>

// Define the number of devices we are using
#define NUM_DEVICES 1

// Create a new LedControl object
// Parameters: DIN pin, CLK pin, CS pin, number of devices
LedControl lc = LedControl(11, 13, 10, NUM_DEVICES);

// Face patterns for 8x8 LED matrix (eye and mouth shapes for animation)
const byte facePatterns[6][8] = {
  // Face with closed mouth and open eyes
  {
    B01100110, // Row 0
    B10011001, // Row 1
    B10011001, // Row 2
    B01100110, // Row 3
    B00000000, // Row 4
    B00000000, // Row 5
    B00111100, // Row 6
    B00000000  // Row 7
  },
  // Face with small open mouth and open eyes
  {
    B01100110, // Row 0
    B10011001, // Row 1
    B10011001, // Row 2
    B01100110, // Row 3
    B00000000, // Row 4
    B00000000, // Row 5
    B00111100, // Row 6
    B00011000  // Row 7
  },
  // Face with wide open mouth and open eyes
  {
    B01100110, // Row 0
    B10011001, // Row 1
    B10011001, // Row 2
    B01100110, // Row 3
    B00000000, // Row 4
    B00000000, // Row 5
    B01111110, // Row 6
    B00111100  // Row 7
  },
  // Face with closed mouth and closed eyes
  {
    B01100110, // Row 0
    B01100110, // Row 1
    B01100110, // Row 2
    B01100110, // Row 3
    B00000000, // Row 4
    B00000000, // Row 5
    B00111100, // Row 6
    B00000000  // Row 7
  },
  // Face with small open mouth and closed eyes
  {
    B01100110, // Row 0
    B01100110, // Row 1
    B01100110, // Row 2
    B01100110, // Row 3
    B00000000, // Row 4
    B00000000, // Row 5
    B00111100, // Row 6
    B00011000  // Row 7
  },
  // Face with wide open mouth and closed eyes
  {
    B01100110, // Row 0
    B01100110, // Row 1
    B01100110, // Row 2
    B01100110, // Row 3
    B00000000, // Row 4
    B00000000, // Row 5
    B01111110, // Row 6
    B00111100  // Row 7
  }
};

void setup() {
  // Initialize the MAX7219 module
  lc.shutdown(0, false);       // Wake up the MAX7219
  lc.setIntensity(0, 8);       // Set brightness level (0 is min, 15 is max)
  lc.clearDisplay(0);          // Clear the display
}

void displayPattern(const byte pattern[8]) {
  for (int row = 0; row < 8; row++) {
    lc.setRow(0, row, pattern[row]);
  }
}

void loop() {
  // Loop through each face pattern to simulate talking and blinking
  for (int i = 0; i < 6; i++) {
    displayPattern(facePatterns[i]);
    delay(500);  // Wait for half a second before switching to the next pattern
  }
}