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//
// FILE: dht44_test.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.01
// PURPOSE: DHT library test sketch for DHT44 && Arduino
// URL:
//
// Released to the public domain
//
#include <dht.h>
dht DHT;
#define DHT44_PIN 5
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)\tTime (us)");
}
void loop()
{
// READ DATA
Serial.print("DHT44, \t");
uint32_t start = micros();
int chk = DHT.read44(DHT44_PIN);
uint32_t stop = micros();
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.print(DHT.temperature, 1);
Serial.print(",\t");
Serial.print(stop - start);
Serial.println();
// FOR UNO + DHT44 500ms SEEMS TO BE MINIMUM DELAY BETWEEN SENSOR READS,
// ADJUST TO YOUR NEEDS
delay(1000);
}
//
// END OF FILE
//
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