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javieryanez / nodemcu-modules

Modules for nodeMcu (LUA intepreter for ESP8266)
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FIXED/DHT Init sequence, per DHT Arduino Library delay after INIT sho… #4

Closed jescarri closed 9 years ago

jescarri commented 9 years ago

Per http://playground.arduino.cc/Main/DHTLib After Waking up the DHT, a 40 ms delay is needed. Then set the pin as input, read, do the job and set again the pin to high. DHT is clunky, even in arduino, but so far I'm getting 80% of success vs 10% before the changes.

dofile('woot.lua') Temperature: 29.1.0000000000002 deg C Temperature: 84.38.3.8000000000003 deg F Temperature: 84.38 deg F Humidity: 27.7.0000000000002% dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 27.8.0000000000002% dofile('woot.lua') Temperature: 29.1.0000000000002 deg C Temperature: 84.38.3.8000000000003 deg F Temperature: 84.38 deg F Humidity: 27.8.0000000000002% dofile('woot.lua') Temperature: 29.1.0000000000002 deg C Temperature: 84.38.3.8000000000003 deg F Temperature: 84.38 deg F Humidity: 27.8.0000000000002% dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 27.8.0000000000002% dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 27.8.0000000000002% dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.0000000000002% dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.0000000000002% dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.0000000000002% dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.0000000000002% dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.0000000000002% dofile('woot.lua') Error reading from DHT22 dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.0000000000002%

dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.0000000000002% dofile('woot.lua') Error reading from DHT22 dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.7053025658242e-13% dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.7053025658242e-13% dofile('woot.lua') Error reading from DHT22 dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.7053025658242e-13% dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.0000000000002% dofile('woot.lua') Temperature: 29.1.7053025658242e-13 deg C Temperature: 84.2.2.0000000000002 deg F Temperature: 84.2 deg F Humidity: 28.1.0000000000002%