Improved sensor readings in htu21d component.

[matzman666]

What does this implement/fix?

Made sensor readings asyncronous using set_timeout() and deleted any delay() call. This removes the warning that "Component htu21d took a long time for an operation".

Furthermore I increased the delay when reading the temperature from the sensor because the original delay was 50ms but according to datasheet the sht21 sensor can take up to 85 ms when reading the temperature.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

Related issue or feature (if applicable):

• SHT21 from Sensirion needs longer delay #4641
• SHT21 sensor don't work issues#3549

Test Environment

• ESP32
• ESP32 IDF
• ESP8266
• RP2040
• BK72xx
• RTL87xx

Checklist:

• The code change is tested and works locally.
• Tests have been added to verify that the new code works (under tests/ folder).

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in esphome-docs.

[xxVDRxx]

after update to 2023.12.3 my htu-21 doesn`t read humidity

[matzman666]

Ok, this is strange. The code reading the humidity is exactly the same code as before with the only difference that its execution is now scheduled using set_timeout() instead of blocking the main loop.

Another change is that I increased the wait time between starting the temperature measurement and reading the result, but why should that affect the humidity measurement?

The new code has been tested using a sht21 sensor and everything was working as it should. I couldn't test with a htu21d sensor since I don't have one, but in theory it should behave the same as a sht21 (except of having different measurement delays).

What does esphome's log say?

[xxVDRxx]

htu-21 working ok, I dont know what happened but I have a new entity for humidity. I use MQTT. Dont have time today to analize this but it`s look like that:

sensor.sypialnia_htu21d_sypialnia_wilgotnosc is new entity... strange... i didn`t change config etc, only upgrade esphome and upgrade a node via ota.