We need to setup the internal reference of the ESP32-c3 It is not clear what is the[ default range of the ADC](https://docs.espressif.com/projects/esp-idf/en/v4.4/esp32c3/api-reference/peripherals/adc.html#:~:text=Per%20design%20the%20ESP32%2DC3,difference%2C%20hardware%20calibration%20is%20introduced). And it is also not clear if[ it should be calibrated ](https://docs.espressif.com/projects/esp-idf/en/v4.4/esp32c3/api-reference/peripherals/adc.html#:~:text=Per%20design%20the%20ESP32%2DC3,difference%2C%20hardware%20calibration%20is%20introduced.)or not.
We need to setup the internal reference of the ESP32-c3
It is not clear what is the default range of the ADC.
And it is also not clear if it should be calibrated or not.