defer callback for hw encoder to ada callback

Author: hathach

changelog.md

@@ -8,6 +8,7 @@
 - Added systemOff() to enter hibernate mode
 - Correct waitForEvent() function with SoftDevice enabled and disabled.
 - Added RotaryEncoder support for both Hardware and Software Encoder.
+- Ada Callback task is started along with loop task, used as worker thread to defer interrupt callback.
 
 ## 0.7.0
 

libraries/RotaryEncoder/RotaryEncoder.cpp

@@ -198,7 +198,7 @@ void HwRotaryEncoder::_irq_handler(void)
     if ( _cb )
     {
       int32_t step = read();
-      if ( step ) _cb(step);
+      if ( step ) ada_callback(NULL, _cb, step);
     }
   }
 }