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Update dht22.lua 

Addresses issue #225, slower loop timing due to the use of floats. Should be safe to use with integer-only builds, since on integer-only builds I could never see "3" as a valid value for either low or high
This commit is contained in:
robcazzaro 2015-02-16 19:17:23 +00:00
parent 7e524f7dd4
commit 85727485cf
1 changed files with 3 additions and 3 deletions
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6
lua_modules/dht22/dht22.lua
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@ -62,17 +62,17 @@ function M.read(pin)
--DHT data acquired, process. --DHT data acquired, process.
for i = 1, 16, 1 do for i = 1, 16, 1 do
if (bitStream[i] > 4) then if (bitStream[i] > 3) then
humidity = humidity + 2 ^ (16 - i) humidity = humidity + 2 ^ (16 - i)
end end
end end
for i = 1, 16, 1 do for i = 1, 16, 1 do
if (bitStream[i + 16] > 4) then if (bitStream[i + 16] > 3) then
temperature = temperature + 2 ^ (16 - i) temperature = temperature + 2 ^ (16 - i)
end end
end end
for i = 1, 8, 1 do for i = 1, 8, 1 do
if (bitStream[i + 32] > 4) then if (bitStream[i + 32] > 3) then
checksum = checksum + 2 ^ (8 - i) checksum = checksum + 2 ^ (8 - i)
end end
end end