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.

analogRead (A9) generates an undefined reference to `analogRead (PureAnalogPin)' error when compiled for the M4 core. Setup: Giga R1 board library: 4.1.5 Sketch: ...

Here using ATMEGA 4809 Arduino nano board and Capacitive Soil Moisture Sensor V2, I am trying to make an Automatic drip-irrigation system. Below is my code which is being used in the project. /* code ...