#include <LedControl.h>
 
int DIN = 12;
int CS =  11;
int CLK = 10;
 
byte e[8]=     {0x7C,0x7C,0x60,0x7C,0x7C,0x60,0x7C,0x7C};  //E
byte d[8]=     {0x78,0x7C,0x66,0x66,0x66,0x66,0x7C,0x78};  //D
byte u[8]=     {0x66,0x66,0x66,0x66,0x66,0x66,0x7E,0x7E};  //U
byte c[8]=     {0x7E,0x7E,0x60,0x60,0x60,0x60,0x7E,0x7E};  //C
byte eight[8]= {0x7E,0x7E,0x66,0x7E,0x7E,0x66,0x7E,0x7E};  //8
byte s[8]=     {0x7E,0x7C,0x60,0x7C,0x3E,0x06,0x3E,0x7E};  //S
byte dot[8]=   {0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x18};  //.
byte o[8]=     {0x7E,0x7E,0x66,0x66,0x66,0x66,0x7E,0x7E};  //O
byte m[8]=     {0xE7,0xFF,0xFF,0xDB,0xDB,0xDB,0xC3,0xC3};  //M
 
LedControl lc=LedControl(DIN,CLK,CS,16);
 
void setup(){
 lc.shutdown(0,false);       //启动时，MAX72XX处于省电模式
 lc.setIntensity(0,8);       //将亮度设置为最大值
 lc.clearDisplay(0);         //清除显示
}
 
void loop(){ 
    byte smile[8]=   {0x3C,0x42,0xA5,0x81,0xA5,0x99,0x42,0x3C};//笑脸
    byte neutral[8]= {0x3C,0x42,0xA5,0x81,0xBD,0x81,0x42,0x3C};//标准脸    
 
    printByte(e);//显示8
    delay(1000);//延时1秒
    printByte(neutral);//显示标准脸
    delay(1000);
    printByte(smile);//显示标准脸
    delay(1000);
    lc.setLed(1,1,5,true);
}
 
//点阵显示函数
void printByte(byte character [])
{
  int i = 0;
  for(i=0;i<8;i++)
  {
    lc.setRow(0,i,character[i]);
  }
}