ESP32S3 ADC readings

[saraverbeecke]

Hi,

Are the MicroPython docs about the ESP32 ADC also relevant for the ESP32S3?

I would like to understand what the read_uv() function means and how to read out a correct analog input voltage.

1. What is the actual measurable input voltage range on an ADC input pin?
2. Do I need to use the attenuation value (the read_uv() is only relevant before the atten)?

Thanks!

[peterhinch]

I haven't done detailed tests but I have used the ambient light sensor in the UM Feather S3. The ADC uses the same MicroPython API as the standard ESP32. I needed to use ADC.ATTN_11DB to get the right output range.