RAK Rotary and simple up/down/press button support for Canned Messages

src/input/UpDownInterruptBase.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include "SinglePortModule.h" // TODO: what header file to include?
+#include "InputBroker.h"
+
+class UpDownInterruptBase :
+    public Observable<const InputEvent *>,
+    private concurrency::OSThread
+{
+  public:
+    explicit UpDownInterruptBase(
+        const char *name);
+    void init(
+      uint8_t pinDown, uint8_t pinUp, uint8_t pinPress,
+      char eventDown, char eventUp, char eventPressed,
+        void (*onIntDown)(), void (*onIntUp)(), void (*onIntPress)());
+    void intPressHandler();
+    void intDownHandler();
+    void intUpHandler();
+
+  protected:
+    virtual int32_t runOnce() override;
+  private:
+    uint8_t _pinDown = 0;
+    uint8_t _pinUp = 0;
+    char _eventDown = InputEventChar_KEY_NONE;
+    char _eventUp = InputEventChar_KEY_NONE;
+    char _eventPressed = InputEventChar_KEY_NONE;
+    const char *_originName;
+};