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);   }