add RotaryEncoderMCP23017ButtonESP32

Author: thijstriemstra

RotaryEncoderMCP23017ButtonESP32/RotaryEncoderMCP23017ButtonESP32.cpp

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+/*
+  RotaryEncoderMCP23017ButtonESP32.h - ESP32 version of rotary encoder with
+  internal push button controlled by MCP23017 multiplexer.
+*/
+
+#include "RotaryEncoderMCP23017ButtonESP32.h"
+
+// declared here so handler below can access
+Method _btnCallback;
+//_btnCallback.callback2IntArg(button->getId(), eventType);
+
+RotaryEncoderPushButtonESP32::RotaryEncoderPushButtonESP32(
+    uint8_t index,
+    int a_pin,
+    int b_pin,
+    int btn_pin,
+    Method btn_callback,
+    Method encoder_callback,
+    MultiPlexer_MCP23017* mcp
+) {
+  _pinA = a_pin;
+  _pinB = b_pin;
+  _btnPin = btn_pin;
+  _btnCallback = btn_callback;
+  _encoderCallback = encoder_callback;
+
+  _encoder = new ESP32Encoder();
+  _button = new Button_MCP23017(_btnPin, MCP_PORT::A, mcp, _btnCallback);
+}
+
+void RotaryEncoderPushButtonESP32::begin() {
+  // encoder
+  _encoder->attachSingleEdge(_pinA, _pinB);
+
+  // button
+  _button->begin();
+}
+
+void RotaryEncoderPushButtonESP32::loop() {
+  // button
+  _button->loop();
+
+  // encoder
+  _value = getPosition();
+  if (_position != _value) {
+    if (_value > _position) {
+      rotation = EventType::ROTARY_CW;
+    } else {
+      rotation = EventType::ROTARY_CCW;
+    }
+    _position = _value;
+
+    // notify others
+    _encoderCallback.callback2IntArg(_position, rotation);
+  }
+}
+
+int64_t RotaryEncoderPushButtonESP32::getPosition() {
+  return _encoder->getCount();
+}

RotaryEncoderMCP23017ButtonESP32/RotaryEncoderMCP23017ButtonESP32.h

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+/*
+   RotaryEncoderMCP23017ButtonESP32.h - ESP32 version of rotary encoder with
+   internal push button controlled by MCP23017 multiplexer.
+*/
+
+#ifndef RotaryEncoderMCP23017ButtonESP32_h
+#define RotaryEncoderMCP23017ButtonESP32_h
+
+#include <Arduino.h>
+#include <Method.h>
+#include <ESP32Encoder.h>
+#include <Button_MCP23017.h>
+#include <MultiPlexer_MCP23017.h>
+
+class RotaryEncoderMCP23017ButtonESP32
+{
+  public:
+    RotaryEncoderMCP23017ButtonESP32(
+      uint8_t index,
+      int a_pin,
+      int b_pin,
+      int btn_pin,
+      Method btn_callback,
+      Method encoder_callback,
+      MultiPlexer_MCP23017* mcp
+    );
+    void begin();
+    void loop();
+    int64_t getPosition();
+
+    int rotation;
+
+    enum EventType {
+      ROTARY_CW  = 1 << 3,
+      ROTARY_CCW = 1 << 4,
+    };
+
+  private:
+    Button_MCP23017* _button;
+    ESP32Encoder* _encoder;
+    int64_t _position = 0;
+    int64_t _value = 0;
+    int _pinA;
+    int _pinB;
+    int _btnPin;
+
+    // callbacks
+    Method _encoderCallback;
+};
+
+#endif