ESP32 Forum

Hi all,
I need to develope a true RMS power meter using ESP32 ADC, i'm using esp-idf library but i can't find any ADC reference .
Is there a plan to include an ADC library in near future?

ty

Roberto

Hi Roberto,

ADC1 is currently supported in esp-idf, however the API documentation seems to be missing from the API reference. We'll get this fixed ASAP.

In the meantime, you can find the relevant functions and some example code here:
https://github.com/espressif/esp-idf/bl ... iver/adc.h

There is currently a known issue with the ADC, the output values are not fully linear and we need to add compensation for ADC characterisation to the driver. We are working on this.


Angus

Ty for reply, another question is it true that conversion speed is 6KHz, 166usec each channel? If so i think i will have some problem on phase measurement precision.