ADD part of mail for pedal device

multi_tasking/pedal_device.hpp

@@ -33,7 +33,8 @@ namespace multi_tasking {
 
 class PedalDevice {
    public:
-    PedalDevice();  // NOLINT(runtime/references)
+    PedalDevice(Callback<void()> cbOnLeft,
+                Callback<void()> cbOnRight);  // NOLINT(runtime/references)
 
     // make the class non copyable
     PedalDevice(PedalDevice&)            = delete;
@@ -43,12 +44,6 @@ class PedalDevice {
     std::chrono::milliseconds getCurrentRotationTime();
 
    private:
-    // private methods
-    void onLeft();
-    void onRight();
-    void increaseRotationSpeed();
-    void decreaseRotationSpeed();
-
     // data members
     volatile uint32_t _currentStep = static_cast<uint32_t>(
         (bike_computer::kInitialPedalRotationTime - bike_computer::kMinPedalRotationTime)