仿真原理图如下（proteus仿真工程文件可到本帖附件中下载）
代码如下：
- #include <dht11.h>
- dht11 DHT11;
- #define DHT11PIN 2
- void setup(){
- Serial.begin(9600);
- }
- void loop(){
- Serial.println("\n");
- int chk = DHT11.read(DHT11PIN);
- Serial.print("Read sensor: ");
- switch (chk)
- {
- case DHTLIB_OK:
- Serial.println("OK");
- break;
- case DHTLIB_ERROR_CHECKSUM:
- Serial.println("Checksum error");
- break;
- case DHTLIB_ERROR_TIMEOUT:
- Serial.println("Time out error");
- break;
- default:
- Serial.println("Unknown error");
- break;
- }
- Serial.print("Humidity (%): ");
- Serial.println((float)DHT11.humidity, 2);
- Serial.print("Temperature (oC): ");
- Serial.println((float)DHT11.temperature, 2);
- delay(2000);
- }
Arduino 328 DHT11.rar
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