#include <LedControl.h>  
#include <DHT.h>  

#define DHTPIN 2            // DATA引脚
#define DHTTYPE DHT11       // 型号选择

int DIN = 11;  //数据引脚
int CS =  10;  //片选脚
int CLK = 13;  //时钟引脚
int numDevices = 4; //点阵数量，最多8个

unsigned char GOOD[32]={
  0x71,0x8a,0x8a,0x8a,0xb2,0x82,0x82,0x71,
  0xc7,0x28,0x28,0x28,0x28,0x28,0x28,0xc7,
  0x38,0xa4,0xa2,0xa2,0xa2,0xa2,0xa4,0x38,
  0x3c,0x42,0x99,0xa5,0x81,0xa5,0x42,0x3c
}; 

unsigned char BAD[32]={
  0xf2,0x8a,0x8a,0xf1,0x89,0x89,0x88,0xf0,
  0x17,0x14,0x14,0xe4,0x24,0x24,0xc4,0xc7,
  0x07,0x88,0x54,0x53,0x50,0x54,0x88,0x07,
  0x80,0x40,0xa0,0x20,0x20,0xa0,0x40,0x80
}; 

LedControl lc = LedControl(DIN,CLK,CS,numDevices);  //lc是建立的对象 
DHT dht(DHTPIN, DHTTYPE);   //建立DHT对象

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  
  Serial.begin(9600);
  dht.begin();              //初始化dht
}  
  
void loop(){   


  float h = dht.readHumidity();         //读取湿度
  float t = dht.readTemperature();      //读取温度（摄氏度）
  if(t >= 30 || h >= 65){
    printByte(GOOD); 
  }else{
    printByte(BAD);
  }
}  
  
void printByte(byte character [])   //点阵显示函数
{  
  for(int i=0;i<8;i++)   
    lc.setRow(0,i,character[i]);  
  for(int i=8;i<16;i++)   
    lc.setRow(1,i-8,character[i]);  
  for(int i=16;i<24;i++)   
    lc.setRow(2,i-16,character[i]);  
  for(int i=24;i<32;i++)   
    lc.setRow(3,i-24,character[i]); 
}