We are using Mbed TLS for cloud communication using ESP32 IDF.
With GCOV disabled ESP32 is able to communicate with the cloud using Mbed TLS. But as we enable GCOV for ESP32 Embed TLS gives error (0x3F80, 0x3B00 etc...). Any solution for this?

The ESP32 has a fairly large variation in ADC bias voltage, so the raw value you get back differs a bit from chip to chip. You can use calibration (as well as e.g. oversampling to reduce noise) to improve your results. Thanks for the quick reply. We are already taking multiple samples for noise red...

We are having ESP32 in 3 different boards. We are measuring 1.16 volt with all three hardware. ESP IDF version : V3.1beta1 ADC details : ADC1/channel6, ADC_ATTEN_DB_11 (VREF 3.3V) We are getting different ADC count with same firmware for 1.16V. ADC count we are getting : 1332, 1325, 1215 . Code snip...