https://github.com/nethoncho/Arduino-DHT22

Arduino library for the DHT22 humidity and temperature sensor
https://github.com/nethoncho/Arduino-DHT22

Last synced: about 2 months ago
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Arduino library for the DHT22 humidity and temperature sensor

• Host: GitHub
• URL: https://github.com/nethoncho/Arduino-DHT22
• Owner: nethoncho
• Archived: true
• Created: 2011-01-19T07:17:03.000Z (almost 14 years ago)
• Default Branch: master
• Last Pushed: 2023-04-27T06:23:55.000Z (over 1 year ago)
• Last Synced: 2024-08-03T18:14:38.850Z (5 months ago)
• Language: C++
• Homepage: http://goo.gl/uy1fV
• Size: 10.7 KB
• Stars: 120
• Watchers: 21
• Forks: 123
• Open Issues: 9
• Metadata Files:
  • Readme: README

Awesome Lists containing this project

• Awesome-arduino - Arduino-DHT22 - Arduino library for the DHT22 humidity and temperature sensor (Libraries)
• awesome-arduino - Arduino-DHT22 - Arduino library for the DHT22 humidity and temperature sensor (Libraries)

README

        
This repo has been archived.

Checkout https://github.com/adafruit/DHT-sensor-library for a maintained code base.

DHT22 sensor library

  Developed by Ben Adams - 2011

Humidity and Temperature Sensor DHT22 info found at

  http://www.sparkfun.com/products/10167

The same sensor has also been spotted going by the names RHT22, AM2302

and RHT03 from a variety of vendors. It uses a non-standard 1-wire digital

signalling protocol.

To install this library for use with the Arduino IDE, copy it

to the `libraries' folder and restart the IDE. For an example of

how to use it, see File->Examples->DHT22->Serial .

Version 0.5: 15-Jan-2012 by Craig Ringer

Update to support Arduino 1.0

Make accessors inlineable so they can be optimised away

Preserve original integer values from sensor and offer access to them

Permit floating point support to be disalbed by defining DHT22_NO_FLOAT before including DHT22.h

Version 0.4: 24-Jan-2011 by Ben Adams

Added return code constants to keywords.txt

Returns DHT_ERROR_CHECKSUM on check sum mismatch 

Version 0.3: 17-Jan-2011 by Ben Adams

This version reads data

Needs check sum code added at the end of readData

Version 0.2: 16-Jan-2011 by Ben Adams

Changed coding style to match other Arduino libraries.

This version will not read data either!

Version 0.1: 10-Jan-2011 by Ben Adams nethoncho AT gmail.com

First Version is a skeleton. This version will not read data!

Code adapted from the following sources:

The Arduino OneWire lib

http://sheepdogguides.com/arduino/ar3ne1humDHT11.htm