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- //
- // FILE: dht_test.ino
- // AUTHOR: Rob Tillaart
- // VERSION: 0.1.07
- // PURPOSE: DHT Temperature & Humidity Sensor library for Arduino
- // URL: http://arduino.cc/playground/Main/DHTLib
- //
- // Released to the public domain
- //
- #include <dht.h>
- dht DHT;
- #define DHT11_PIN 4
- #define DHT21_PIN 5
- #define DHT22_PIN 6
- 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("DHT22, \t");
- int chk = DHT.read22(DHT22_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;
- default:
- Serial.print("Unknown error,\t");
- break;
- }
- // DISPLAY DATA
- Serial.print(DHT.humidity, 1);
- Serial.print(",\t");
- Serial.println(DHT.temperature, 1);
- delay(1000);
- // READ DATA
- Serial.print("DHT21, \t");
- chk = DHT.read21(DHT21_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;
- default:
- Serial.print("Unknown error,\t");
- break;
- }
- // DISPLAY DATA
- Serial.print(DHT.humidity, 1);
- Serial.print(",\t");
- Serial.println(DHT.temperature, 1);
- delay(1000);
- // READ DATA
- Serial.print("DHT11, \t");
- 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;
- default:
- Serial.print("Unknown error,\t");
- break;
- }
- // DISPLAY DATA
- Serial.print(DHT.humidity,1);
- Serial.print(",\t");
- Serial.println(DHT.temperature,1);
- delay(1000);
- }
- //
- // END OF FILE
- //
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