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Fix checksum for DHT11 upon request.

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RobTillaart 2017-09-20 14:47:53 +02:00
parent 83ef3dc636
commit ec741c97f0
4 changed files with 9 additions and 8 deletions
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8
libraries/DHTlib/dht.cpp
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@ -1,12 +1,13 @@
//
// FILE: dht.cpp
// AUTHOR: Rob Tillaart
// VERSION: 0.1.24
// VERSION: 0.1.25
// PURPOSE: DHT Temperature & Humidity Sensor library for Arduino
// URL: http://arduino.cc/playground/Main/DHTLib
//
// HISTORY:
// 0.1.24 2017-07-27 double -> float
// 0.1.25 2017-09-20 FIX https://github.com/RobTillaart/Arduino/issues/80
// 0.1.24 2017-07-27 FIX https://github.com/RobTillaart/Arduino/issues/33 double -> float
// 0.1.23 2017-07-24 FIX https://github.com/RobTillaart/Arduino/issues/31
// 0.1.22 undo delayMicroseconds() for wakeups larger than 8
// 0.1.21 replace delay with delayMicroseconds() + small fix
@ -62,8 +63,7 @@ int8_t dht::read11(uint8_t pin)
temperature = bits[2]; // bits[3] == 0;
// TEST CHECKSUM
// bits[1] && bits[3] both 0
uint8_t sum = bits[0] + bits[2];
uint8_t sum = bits[0] + bits[1] + bits[2] + bits[3];
if (bits[4] != sum)
{
return DHTLIB_ERROR_CHECKSUM;

4
libraries/DHTlib/dht.h
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@ -1,7 +1,7 @@
//
// FILE: dht.h
// AUTHOR: Rob Tillaart
// VERSION: 0.1.24
// VERSION: 0.1.25
// PURPOSE: DHT Temperature & Humidity Sensor library for Arduino
// URL: http://arduino.cc/playground/Main/DHTLib
//
@ -19,7 +19,7 @@
#include <Arduino.h>
#endif
#define DHT_LIB_VERSION "0.1.24"
#define DHT_LIB_VERSION "0.1.25"
#define DHTLIB_OK 0
#define DHTLIB_ERROR_CHECKSUM -1

4
libraries/DHTlib/library.properties
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@ -1,9 +1,9 @@
name=DHTlib
version=0.1.24
version=0.1.25
author=Rob Tillaart <rob.tillaart@gmail.com>
maintainer=Rob Tillaart <rob.tillaart@gmail.com>
sentence=Optimized Library for DHT Temperature & Humidity Sensor on AVR only.
paragraph=
category=Sensors
url=https://github.com/RobTillaart/Arduino/tree/master/libraries/
url=https://github.com/RobTillaart/Arduino/tree/master/libraries
architectures=atmelavr

1
libraries/DHTlib/readme.md
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@ -43,3 +43,4 @@ TODO pin description
* version 0.1.22 undo delayMicroseconds() for wakeups larger than 8
* version 0.1.23 FIX https://github.com/RobTillaart/Arduino/issues/31
* version 0.1.24 FIX https://github.com/RobTillaart/Arduino/issues/33
* version 0.1.25 FIX https://github.com/RobTillaart/Arduino/issues/80