“温湿度传感器 - DHT11”的版本间的差异

 
//    FILE: dht11_test.ino
//  AUTHOR: Rob Tillaart
// VERSION: 0.1.01
// PURPOSE: DHT library test sketch for DHT11 && Arduino
//     URL:
//
// Released to the public domain
 
#include <dht.h>
 
dht DHT;
 
#define DHT11_PIN A1
 
void setup()
{
  Serial.begin(115200);
  Serial.println("DHT TEST PROGRAM ");
  Serial.print("LIBRARY VERSION: ");
  Serial.println(DHT_LIB_VERSION);
  Serial.println();
  Serial.println("Type,\tstatus,\tHumidity (%),\tTemperature (C)");
}
 
void loop()
{
  // READ DATA
  Serial.print("DHT11, \t");
  int chk = DHT.read11(DHT11_PIN);
  switch (chk) {
    case DHTLIB_OK:  
	Serial.print("OK,\t"); 
	break;
    case DHTLIB_ERROR_CHECKSUM: 
	Serial.print("Checksum error,\t"); 
	break;
    case DHTLIB_ERROR_TIMEOUT: 
	Serial.print("Time out error,\t"); 
	break;
    case DHTLIB_ERROR_CONNECT:
        Serial.print("Connect error,\t");
        break;
    case DHTLIB_ERROR_ACK_L:
        Serial.print("Ack Low error,\t");
        break;
    case DHTLIB_ERROR_ACK_H:
        Serial.print("Ack High error,\t");
        break;
    default: 
	Serial.print("Unknown error,\t"); 
	break;
  }
  // DISPLAY DATA
  Serial.print(DHT.humidity, 1);
  Serial.print(",\t");
  Serial.println(DHT.temperature, 1);
 
  delay(2000);
}