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Author SHA1 Message Date
JongHo Lim 89937d5d25 mod readHumidity(). using parameter 'force' 2015-11-29 22:27:43 +09:00
Tony DiCola edcd0e06e6 Merge branch 'master' of https://github.com/adafruit/DHT-sensor-library 1.2.3 2015-10-12 21:30:18 -07:00
Tony DiCola 15020aa891 Fix #44 by conditionally excluding unused port and bitmask state on non-AVR platforms. 2015-10-12 21:30:01 -07:00
Tony DiCola 572347f137 Merge comment update from pull #43 2015-10-12 21:09:17 -07:00
Tony DiCola e9daf69083 Merge README.md change from pull #43 2015-10-12 21:08:31 -07:00
Tony DiCola 56058fecc5 Bump library to 1.2.2 version. 1.2.2 2015-10-12 18:39:28 -07:00
Tony DiCola d71288af17 Merge branch 'jmdana-master' 2015-10-12 18:38:58 -07:00
Tony DiCola ce3190f65c Switch back to integer division in array indexing. 2015-10-12 18:37:54 -07:00
J.M. Dana 5bc0a5c796 Divisions turned into multiplications 
As correctly stated by Mausy5043, the division is quite slow in most
microcontrollers, so I have replaced them with multiplications.
 2015-10-06 23:42:19 +01:00
Tony DiCola 5fb1668822 Merge branch 'jmdana-master' 1.2.1 2015-10-05 17:55:14 -07:00
Tony DiCola c57f0c8c29 Bump version to 1.2.1 2015-10-05 17:54:59 -07:00
J.M. Dana 51a8b814ac Divisions have been replaced by multiplications. 2015-10-03 13:42:09 +01:00
J.M. Dana 36fb16274b DHT::computeHeatIndex has been modified so it uses both Rothfusz and 
Steadman's equations. As a result, it allows a larger range of
temperatures and more accurate results for extreme conditions.
 2015-10-02 21:50:43 +01:00
Tony DiCola 6c0c723907 Merge branch 'matthijskooijman-fixes' 1.2.0 2015-09-15 12:26:54 -07:00
Tony DiCola 232ad0cd70 Bump version to 1.2.0 after integrating optimizations from matthijskooijman. 2015-09-15 12:26:38 -07:00
Matthijs Kooijman f9c3f323e3 Use INPUT_PULLUP 
Previously, the mode was configured to INPUT and then written HIGH,
which works on AVR but isn't very portable. Instead, this uses the
INPUT_PULLUP pin mode (available since Arduino 1.0.1) which is portable.
 2015-07-24 21:44:41 +02:00
Matthijs Kooijman 45a20da301 Shrink DHT::data to 5 bytes 
There's only 5 bytes of data being transferred (2x2 bytes of data, 1
byte checksum), so no need to keep a useless byte.
 2015-07-24 21:43:52 +02:00
Matthijs Kooijman 5973929e63 Remove the firstreading variable 
By cleverly setting _lastreadtime in begin() to make sure that it looks
like the last read was alrady 2000 ms ago, even on startup when millis()
still returns 0, there is no longer a need to keep a separate
firstreading variable, saving a byte of memory and a bit of code.
 2015-07-24 21:42:58 +02:00
Matthijs Kooijman f1b79028ea Clean up two-second interval check 
There was some handling of millis() overflow that is not needed.
Standard unsigned subtraction and wraparound already works as expected,
so this extra check can be removed (it even hurts, since it introduces 2
seconds after a wraparound where no new data will be read, even if it
could otherwise happen).

Also, this prevents calling millis() a second time, since its value is
already known.
 2015-07-24 21:41:19 +02:00
Matthijs Kooijman 04905bc5cd Add force parameter to read methods 
This allows forcing a read, even if the previous read was less than 2
seconds ago. This is useful in cases where the millis() timer is not
reliable, such as when sleeping. In this case, it is up to the caller to
ensure that at least 2 seconds elapse between calls with force set to
true.
 2015-07-24 21:40:22 +02:00
Tony DiCola 5cd78aead6 Fix merge conflict with interrupt disable lock. 1.1.1 2015-07-22 12:22:35 -07:00
Tony DiCola 85d85170bd Fix #37 by optimizing pulse read to use direct port access on AVR, stops checksum failures from missed signals. 2015-07-22 12:13:56 -07:00
Tony DiCola 9419315c50 Merge pull request #36 from Zirientis/master 
Cause interrupts to be reenabled if a timeout occurs while waiting for the sensor
 2015-07-01 22:16:10 -07:00
Zirientis a2208eb813 Cause interrupts to be reenabled if a timeout occurs while waiting for the sensor. 2015-07-01 17:58:17 -07:00
Tony DiCola a1393fc0ff Merge branch 'MyIgel-master' 1.1.0 2015-06-26 15:56:28 -07:00
Tony DiCola ef9590ad96 Fix merge conflicts, make compute heat index default to Fahrenheit to not break old code that assumes default is Fahrenheit. 2015-06-26 15:56:04 -07:00
Tony DiCola b6925ee001 Merge branch 'dynamic_timing' 2015-06-26 15:17:28 -07:00
Tony DiCola 729895339c Integrate keywords.txt from pull #31 2015-06-26 15:15:45 -07:00
Tony DiCola 9d7a9da8ae Refactor algorithm to dynamically adjust to faster/slower processors. Fix #35 #30. 2015-06-26 15:14:17 -07:00
Tony DiCola a67e1a7e06 Automatic library.properties generation. 1.0.0 2015-03-31 12:09:43 -07:00
Igor Scheller 25942ac8b9 Added support for Celsius in computeHeatIndex 2014-11-01 12:27:16 +01:00
Tony DiCola fcd865b3bc Update example to note cycle threshold parameter for Arduino Due. 2014-07-26 13:58:45 -07:00
Tony DiCola 7f7425f11e Resolve #24 by adding convert F to C function. 2014-07-25 19:34:35 -07:00
Tony DiCola f2a48d6267 Resolve issue #20 by moving delay after 2 second read check to make read return quickly. 2014-06-02 13:41:12 -07:00
Tony DiCola 9611395a77 Switch to use noInterrupts and interrupts function. make read() public. This resolves pull #15. 2014-06-02 13:13:50 -07:00
Tony DiCola ce05c3536c Remove serial.print from library and update example error handling. Resolves issue #11 and #13. 2014-06-02 13:03:27 -07:00
Tony DiCola ffac2f15b7 Update example to show temp in Fahrenheit and add computeHeatIndex function to resolve issue #9. 2014-06-02 12:54:54 -07:00
Tony DiCola 633eb08654 Change example extension from .pde to .ino. 2014-06-02 12:36:44 -07:00
Limor "Ladyada" Fried 26e2bc1d79 Merge pull request #8 from soerup/master 
Support for non 16 MHz devices by adding extra parameter to constructor
 2013-01-02 07:58:47 -08:00
Lars Kirkeskov Sørup ad73fab623 Support for non 16mhz devices 
Added constructor parameter to allow for different timing needs. It has
the a default value of 6 which is the original value, so it should be
backwards compatible
 2012-12-29 19:14:51 +01:00
Limor "Ladyada" Fried 71ee113a7b Merge pull request #4 from Jearil/master 
Adding #ifndef DHT_H to header file
 2012-08-26 18:42:37 -07:00
Colin Miller fca71323bd Prevent dht.h being imported multiple times 
Added a basic #ifndef DHT_H to the dht.h file so that if you have a
larger program and want to access the sensor from a different file, you
don't import it twice.
 2012-07-26 21:39:47 -07:00
Paint Your Dragon 53e6481231 Default argument for compatibility with old sketches 2012-02-23 11:43:30 -08:00
Paint Your Dragon 14d816819c Merge pull request #3 from leprasmurf/master 
Convert Celcius to Fahrenheit.
 2012-02-23 11:27:41 -08:00
leprasmurf a3d1dc78bf Added option for converting to Fahrenheit 2012-02-22 22:26:16 -05:00
leprasmurf 8f46f27b66 Modified readTemperature() prototype. Added prototype for new function. 2012-02-22 22:20:19 -05:00
Paint Your Dragon cffd745009 Arduino 1.0 compliant 2011-12-02 19:50:02 -08:00
Ladyada 31b6b45352 clarified the pullup 2011-06-22 16:28:22 -04:00
Ladyada b05219ab42 added mini readme 2011-06-22 16:12:33 -04:00
Ladyada 53f985c6b4 Example sketch 2011-06-22 16:09:13 -04:00