// // FILE: dht22_test.ino // AUTHOR: Rob Tillaart // VERSION: 0.1.00 // PURPOSE: DHT library test sketch for DHT22 && Arduino // URL: // // Released to the public domain // #include dht DHT; #define DHT22_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)"); } 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(2000); } // // END OF FILE //