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SHT21 I2C unable to read #464

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@kyjak

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@kyjak

I'm trying to get to work the Sensirion SHT21 I2C sensor on ESP32 without luck.
Using pins 21,22 as wire interface.
I tried all libraries I could find for SHT2x.
On arduino uno the code works, ESP does not.
It reads wrong sensor data = bogus.
It might be connected to the hal i2c library of esp32.
Do not have oscilloscope to show log :(

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