Differences

This shows you the differences between two versions of the page.

--- en:pfw:dht22tmpformat [2025-04-26 21:03] – [The Document] mka
+++ en:pfw:dht22tmpformat [2025-04-27 13:39] (current) – [A Strange DHT22 Module] mka
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-====== The Document ======
+====== The DHT22 Document ======
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 You can see that the MSB in the upper byte is 0, but all other bits are set.
-If you only take the lower byte, it's $72, which is &114. So, -11.4°C should be displayed here. However, this format didn't correspond to the specification in the datasheet. Instead, it resembled a 12-bit two's complement.
+If you only take the lower byte, it's $72, which is &114. So, -11.4°C should be displayed here. However, this format didn't correspond to the specification in the datasheet. Instead, it resembled some 12-bit format.
 Using the logic analyzer, it was possible to verify that this was not a read error during the SDA bitbang, but that the read routine was actually working correctly.