ESP-C3 internal temp sensor readings are incorrect with core 2.0

[Jason2866]

It seems to be an issue between the ardiuino core and the idf code. On first access it reports fine. Next calls mess with a reinit of the sensor resulting in bad readings and this message: E (312868) tsens: Do not configure the temp sensor when it's running!
E (312872) tsens: Temperature sensor is already running or not be configured

What you are trying to do?
Get the temperature from internal temp sensor

Describe your system( Hardware, computer, O/S, core version, environment).
Windows 10 (latest), VSC/Platformio (latest), ESP32-C3 devkit running Tasmota

Describe what is failing.
Temp readings are fluctuating and wrong

Hardware:

Board: ESP32-C3 dev module
Core Installation version: actual master
IDE name: Platform.io 5.1
Flash Frequency: 80 Mhz
PSRAM enabled: no
Upload Speed: 115200
Computer OS: Windows 10

Description:

Temp readings are wrong from internal sensor. Worked with 2.0.0 alpha

[lbernstone]

The code is pretty simple. Can you try directly calling the IDF functions and see if you get the same error?
https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/esp32-hal-misc.c#L64-L72

[Jason2866]

It worked with alpha 2.0.0 core. The IDF code changed for the temp sensor and now it is broken.
I opened the issue to get a fix for the Arduino ESP32 part and not to do a workaround by calling IDF functions.

[Jason2866]

Bump, the issue is also with the ESP32-S2 and core 2.0
Doing a workaround with IDF calls needs (too) many libs just for temp in a Arduino project.

[VojtechBartoska]

Hello @Jason2866 , sorry for late reply. Are you able to test your issue on development version 2.0.3-RC1 to check if this is still valid?

Thanks!

[Jason2866]

@VojtechBartoska Thank you for the reminder, i will remove the workaround code and test.

[Jason2866]

@VojtechBartoska Tested, the issue is still there

[VojtechBartoska]

Thanks @Jason2866, adding to Roadmap then and we will investigate it more. :)