【Arduino】arduino实现温湿度检测——通过数码管和显示屏显示

#include <LiquidCrystal_I2C.h>
#include <dht11.h>
#include <Wire.h>
#define DHT11PIN A0
LiquidCrystal_I2C lcd(0x27,16,2);
dht11 DHT11;
 //设置阴极接口
 int a = 13;
 int b = 2;
 int c = 3;
 int d = 4;
 int e = 5;
 int f = 6;
 int g = 7;
 int h =8;
 //设置阳极接口
 int d1 = 9;
 int d2 = 10;
 int d3 = 11;
 int d4 = 12;
 int m;
 int n;

 void setup()
 {
   pinMode(d1, OUTPUT);
   pinMode(d2, OUTPUT);
   pinMode(d3, OUTPUT);
   pinMode(d4, OUTPUT);
   pinMode(a, OUTPUT);
   pinMode(b, OUTPUT);
   pinMode(c, OUTPUT);
   pinMode(d, OUTPUT);
   pinMode(e, OUTPUT);
   pinMode(f, OUTPUT);
   pinMode(g, OUTPUT);
   pinMode(h, OUTPUT);
   pinMode(DHT11PIN, INPUT);
   lcd.init();
   lcd.backlight();
  
 }
void loop()
{
 int chk=DHT11.read(DHT11PIN);
  lcd.setCursor(0,0);
  lcd.print("Tep:");
  lcd.print((float)DHT11.temperature);
  lcd.print("'C");
  lcd.setCursor(0,1);
  lcd.print("Hum :");
  lcd.print((float)DHT11.humidity,2);
  lcd.print("%");
  delay(1000);
 for(int i=0;i<=200;i++){
 digitalWrite(h,LOW);
  Display(2,DHT11.temperature%10);
  delay(5);
  Display(1,DHT11.temperature/10);
  delay(5);
  m=(DHT11.temperature-DHT11.temperature/10*10-DHT11.temperature%10)*100;
  Display(3,m/10);
  delay(5);
  Display(4,m%10);
  delay(5);
}
 for(int j=0;j<=200;j++){
  digitalWrite(h,LOW);
  Display(2,DHT11.humidity%10);
  delay(5);
   Display(1,DHT11.humidity/10);
  delay(5);
  n=(DHT11.humidity-DHT11.humidity/10*10-DHT11.humidity%10)*100;
  Display(3,n/10);
  delay(5);
  Display(4,n%10);
  delay(5);
 }
// clear();
}
void WeiXuan(unsigned char n)//定义选择亮的位置
{
  switch(n)
  {
    case 1: 
      digitalWrite(d1,HIGH);
      digitalWrite(d2, LOW);
      digitalWrite(d3, LOW);
      digitalWrite(d4, LOW);   
      break;
     case 2: 
      digitalWrite(d1, LOW);
      digitalWrite(d2, HIGH);
      digitalWrite(d3, LOW);
      digitalWrite(d4, LOW); 
      break;
      case 3: 
       digitalWrite(d1,LOW);
       digitalWrite(d2, LOW);
       digitalWrite(d3, HIGH);
       digitalWrite(d4, LOW); 
       break;
      case 4: 
       digitalWrite(d1, LOW);
       digitalWrite(d2, LOW);
       digitalWrite(d3, LOW);
       digitalWrite(d4, HIGH); 
       break;
       default :
       digitalWrite(d1, LOW);
       digitalWrite(d2, LOW);
       digitalWrite(d3, LOW);
       digitalWrite(d4, LOW);
       break;
      }
}
void Num_0()//数字0
{
  digitalWrite(a, LOW);
  digitalWrite(b, LOW);
  digitalWrite(c, LOW);
  digitalWrite(d, LOW);
  digitalWrite(e, LOW);
  digitalWrite(f, LOW);
  digitalWrite(g, HIGH);
  digitalWrite(h,HIGH);
}
void Num_1()//数字1
{
  digitalWrite(a, HIGH);
  digitalWrite(b, LOW);
  digitalWrite(c, LOW);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, HIGH);
  digitalWrite(h,HIGH);
}
void Num_2()//数字2
{
  digitalWrite(a, LOW);
  digitalWrite(b, LOW);
  digitalWrite(c, HIGH);
  digitalWrite(d, LOW);
  digitalWrite(e, LOW);
  digitalWrite(f, HIGH);
  digitalWrite(g, LOW);
  digitalWrite(h,HIGH);
}
void Num_3()//数字3
{
  digitalWrite(a, LOW);
  digitalWrite(b, LOW);
  digitalWrite(c, LOW);
  digitalWrite(d, LOW);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, LOW);
  digitalWrite(h,HIGH);
}
void Num_4()//数字4
{
  digitalWrite(a, HIGH);
  digitalWrite(b, LOW);
  digitalWrite(c, LOW);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, LOW);
  digitalWrite(g, LOW);
  digitalWrite(h,HIGH);
}
void Num_5()//数字5
{
  digitalWrite(a, LOW);
  digitalWrite(b, HIGH);
  digitalWrite(c, LOW);
  digitalWrite(d, LOW);
  digitalWrite(e, HIGH);
  digitalWrite(f, LOW);
  digitalWrite(g, LOW);
  digitalWrite(h,HIGH);
}
void Num_6()//数字6
{
  digitalWrite(a, LOW);
  digitalWrite(b, HIGH);
  digitalWrite(c, LOW);
  digitalWrite(d, LOW);
  digitalWrite(e, LOW);
  digitalWrite(f, LOW);
  digitalWrite(g, LOW);
  digitalWrite(h,HIGH);
}
void Num_7()//数字7
{
  digitalWrite(a, LOW);
  digitalWrite(b, LOW);
  digitalWrite(c, LOW);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, HIGH);
  digitalWrite(h,HIGH);
}
void Num_8()//数字8
{
  digitalWrite(a, LOW);
  digitalWrite(b, LOW);
  digitalWrite(c, LOW);
  digitalWrite(d, LOW);
  digitalWrite(e, LOW);
  digitalWrite(f, LOW);
  digitalWrite(g, LOW);
  digitalWrite(h,HIGH);
}
void Num_9()//数字9
{
  digitalWrite(a, LOW);
  digitalWrite(b, LOW);
  digitalWrite(c, LOW);
  digitalWrite(d, LOW);
  digitalWrite(e, HIGH);
  digitalWrite(f, LOW);
  digitalWrite(g, LOW);
  digitalWrite(h,HIGH);
}
void Clear()  //清屏
{
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, HIGH);
  digitalWrite(h,HIGH);
}
void pickNumber(unsigned char n)//选择亮数字的，将前面定义好的数字直接调用
{
  switch(n)
  {
   case 0:Num_0();break;
   case 1:Num_1();break;
   case 2:Num_2();break;
   case 3:Num_3();break;
   case 4:Num_4();break;
   case 5:Num_5();break;
   case 6:Num_6();break;
   case 7:Num_7();break;
   case 8:Num_8();break;
   case 9:Num_9();break;
   default:Clear();break; 
  }
}
void Display(unsigned char x, unsigned char Number)//选择对应的位置和数字
{
  WeiXuan(x);
  pickNumber(Number);
  delay(1);
  Clear() ; 
}