23 lines
458 B
Markdown
23 lines
458 B
Markdown
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# DHT22 module
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## Example
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```lua
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PIN = 4 -- data pin, GPIO2
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dht22 = require("dht22")
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dht22.read(PIN)
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t = dht22.getTemperature()
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h = dht22.getHumidity()
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-- temperature in degrees Celsius and Farenheit
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print("Temperature: "..(t/10).."."..(t%10).." deg C")
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print("Temperature: "..(9 * t / 50 + 32).."."..(9 * t / 5 % 10).." deg F")
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-- humidity
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print("Humidity: "..(h/10).."."..(h%10).."%")
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-- release module
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dht22 = nil
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package.loaded["dht22"]=nil
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```
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