#include <LedControl.h>

int NUM_DEVICES = 1; 
int DATA_IN_PIN  = 11;
int CLK_PIN      = 13;
int CS_PIN       = 10;

LedControl lc=LedControl(DATA_IN_PIN,CLK_PIN,CS_PIN,NUM_DEVICES);

byte heart[] = {
 0x0, 0x66, 0xff, 0xff, 0x7e, 0x3c, 0x18, 0x0
};

byte smile[] = {
  0x66, 0x66, 0x66, 0x0, 0xc3, 0x66, 0x3c, 0x0
};

byte sad[] = {
0x66, 0x66, 0x66, 0x0, 0x3c, 0x66, 0xc3, 0x0
};

void setup() {
  lc.shutdown(0,false);       
  lc.setIntensity(0,8);       
  lc.clearDisplay(0);         
  
  displayPattern(heart);
  delay(1000);
  displayPattern(smile);
  delay(1000);
  displayPattern(sad);
  delay(1000);
}

void loop() {
 
}

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