a lot of thread housekeeping. Switch them off when not needed / disabled.

src/input/RotaryEncoderInterruptBase.cpp

@@ -54,7 +54,7 @@ int32_t RotaryEncoderInterruptBase::runOnce()
 
     this->action = ROTARY_ACTION_NONE;
 
-    return 30000; // TODO: technically this can be MAX_INT
+    return INT32_MAX;
 }
 
 void RotaryEncoderInterruptBase::intPressHandler()

src/input/RotaryEncoderInterruptBase.h

@@ -7,7 +7,7 @@ enum RotaryEncoderInterruptBaseStateType { ROTARY_EVENT_OCCURRED, ROTARY_EVENT_C
 
 enum RotaryEncoderInterruptBaseActionType { ROTARY_ACTION_NONE, ROTARY_ACTION_PRESSED, ROTARY_ACTION_CW, ROTARY_ACTION_CCW };
 
-class RotaryEncoderInterruptBase : public Observable<const InputEvent *>, private concurrency::OSThread
+class RotaryEncoderInterruptBase : public Observable<const InputEvent *>, public concurrency::OSThread
 {
   public:
     explicit RotaryEncoderInterruptBase(const char *name);

src/input/RotaryEncoderInterruptImpl1.cpp

@@ -9,6 +9,8 @@ void RotaryEncoderInterruptImpl1::init()
 {
     if (!moduleConfig.canned_message.rotary1_enabled) {
         // Input device is disabled.
+        setInterval(INT32_MAX);
+        enabled = false;
         return;
     }
 

src/input/cardKbI2cImpl.cpp

@@ -13,6 +13,8 @@ void CardKbI2cImpl::init()
     if (cardkb_found != CARDKB_ADDR)
     {
         // Input device is not detected.
+        setInterval(INT32_MAX);
+        enabled = false;
         return;
     }
 

src/input/kbI2cBase.h

@@ -5,7 +5,7 @@
 
 class KbI2cBase :
     public Observable<const InputEvent *>,
-    private concurrency::OSThread
+    public concurrency::OSThread
 {
   public:
     explicit KbI2cBase(const char *name);