ADD gear event driven

multi_tasking/gear_device.hpp

@@ -26,29 +26,20 @@
 
 #pragma once
 
-#include "constants.hpp"
 #include "mbed.h"
 
 namespace multi_tasking {
 
 class GearDevice {
    public:
-    GearDevice();  // NOLINT(runtime/references)
+    GearDevice(Callback<void()> cbOnUp,
+               Callback<void()> cbOnDown);  // NOLINT(runtime/references)
 
     // make the class non copyable
     GearDevice(GearDevice&)            = delete;
     GearDevice& operator=(GearDevice&) = delete;
 
     // method called for updating the bike system
-    uint8_t getCurrentGear();
-    uint8_t getCurrentGearSize() const;
-
-    void onUp();
-    void onDown();
-
-   private:
-    // data members
-    volatile uint8_t _currentGear = bike_computer::kMinGear;
 };
 
 }  // namespace multi_tasking