Intro

This library is used by EncoderButton to allow rotary encoder to work with ESP32 or ESP8266.

It uses stripped down code from https://github.com/igorantolic/ai-esp32-rotary-encoder due to the fact that I do not know enough to write my own rotuines.

I have not tested this with an ESP8266!

I take no credit for this rework.

I hope it does a thing for you.

Arduino Esp32 Encoder Library

Rotary encoder main interrupt code is extracted from (https://github.com/marcmerlin/IoTuz) and some additional features are included here.

Description

This library enables easy implementation of rotary encoder functionality in your application for ESP32, ESP8266 (or similar microcontroller).

Installing

The downloaded code can be included as a new library into the IDE selecting the menu:

 Sketch / include Library / Add .Zip library

Connecting Rotary Encoder with Switch (no pcb version. The encoder is like this) to your microcontroller ESP32, ESP8266 (or similar)

There is no need for external resistors, you can use only the encoder.

You have to set INPUT_PULLUP of Right and Left pins with pinMode(ROTARY_ENCODER_A_PIN, INPUT_PULLUP); and pinMode(ROTARY_ENCODER_B_PIN, INPUT_PULLUP); Look example Esp32RotaryEncoderTheShortestExampleNoResistors.

There is a new option areEncoderPinsPulldownforEsp32. By default it is true, but in case you use ESP32 you can set it to true. It doesn't make any change for ESP8266, only ESP32.

rotaryEncoder.areEncoderPinsPulldownforEsp32 = false;

There is a new option isButtonPulldown. By default it is false, but in case you use ESP32 you can set it to true. See Multi-select example. It doesn't make any change for ESP8266, only ESP32.

rotaryEncoder.isButtonPulldown = true;