DHT11温度湿度模块读取温湿度

下载库文件 http://pan.baidu.com/s/1qWkn4fU，整个文件夹放入 .\arduino-1.5.6-r2\libraries文件夹中

 

 

 

函数解释:

read11(uint8pin) :启动函数，填入DHT11数据口,返回值为0，-1，-2，表示正常，错误，超时

read22(uint8 pin):数据口，DHT22的启动函数，其他与以上一致

temperature：返回温度值

humidity：返回湿度值

 

 

 

 

 

 

测验代码，输出口接在12脚

 

#include
#define DHT11 12//set pin12 as sensor link

dht DHT;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("DHT11 data cout:");
 

}

void loop()
{
  delay(1000);//Wait
  int check = DHT.read11(DHT11);
  Serial.print("Current state: ");
  Serial.print(check);
 Serial.print("   ");
  Serial.print("Temperature:");
  Serial.print(DHT.temperature);
 Serial.print("   ");
  Serial.print("Humidity:");
  Serial.println(DHT.humidity,1);
 
}