Fix negative temperatures for DHT22#16
Merged
winlinvip merged 1 commit intowinlinvip:masterfrom Jan 2, 2018
danielfaust:patch-1
Merged
Fix negative temperatures for DHT22#16winlinvip merged 1 commit intowinlinvip:masterfrom danielfaust:patch-1
winlinvip merged 1 commit intowinlinvip:masterfrom
danielfaust:patch-1
Conversation
This commit fixes issue #14 The MSB carries the sign information, which is filtered with `& 0x8000`. If the flag is present, the remainder will get multiplied by `-1`. All the remaining bits contain the value and are filtered with `& 0x7FFF`.
Owner
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👍 |
Owner
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Release 1.0.8. |
Owner
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It seems that you only fixed for DHT22, not for DHT11? Could you please fix it for DHT11 at https://github.com/winlinvip/SimpleDHT/blob/master/SimpleDHT.cpp#L112 ? |
Contributor
Author
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I don't have a DHT11 to test with. But since the DHT11 only works with temperatures equal to or above 0 °C, I think that sign flag never gets set. I preferred not to touch that code. |
Owner
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👌 Agreed, I will release a new version. |
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This commit fixes issue #14
The MSB carries the sign information, which is filtered with
& 0x8000. If the flag is present, the remainder will get multiplied by-1.All the remaining bits contain the value and are filtered with
& 0x7FFF.