4 // PURPOSE: DHT11 Temperature & Humidity Sensor library for Arduino
5 // LICENSE: GPL v3 (http://www.gnu.org/licenses/gpl.html)
7 // DATASHEET: http://www.micro4you.com/files/sensor/DHT11.pdf
9 // URL: http://playground.arduino.cc/Main/DHT11Lib
12 // George Hadjikyriacou - Original version
19 #if defined(ARDUINO) && (ARDUINO >= 100)
25 #define DHT11LIB_VERSION "0.4.1"
28 #define DHTLIB_ERROR_CHECKSUM -1
29 #define DHTLIB_ERROR_TIMEOUT -2