AnalogPin is an Arduino class that adds noise filtering and smoothing to analogRead(). Furthermore it can speed up the analogRead() function by tuning the pre-scaler. This latter is AVR only.

Hello, I am trying to use faster analogRead function. So I want to change prescaler of the ADC in ESP8266 actually in Wemos. I need to change prescaler of ADC to 16 because in my application ...