Optimisation: make constructors constexpr

Cppcheck was complaining some member variables
are not initialised in the constructor.

Change in memory:
Flash: -186 bytes
SRAM: -15 bytes

src/logic/command_base.h

@@ -28,7 +28,7 @@ ErrorCode AddErrorAxisBit(ErrorCode ec, uint8_t axis);
 /// These tasks report their progress and only one of these tasks is allowed to run at once.
 class CommandBase {
 public:
-    inline CommandBase()
+    inline constexpr CommandBase()
         : state(ProgressCode::OK)
         , error(ErrorCode::OK)
         , deferredErrorCode(ErrorCode::OK)

src/logic/cut_filament.h

@@ -11,8 +11,10 @@ namespace logic {
 /// @brief  A high-level command state machine - handles the complex logic of cutting filament
 class CutFilament : public CommandBase {
 public:
-    inline CutFilament()
-        : CommandBase() {}
+    inline constexpr CutFilament()
+        : CommandBase()
+        , cutSlot(0)
+        , savedSelectorFeedRate_mm_s(0) {}
 
     /// Restart the automaton
     /// @param param index of filament slot to perform cut onto

src/logic/eject_filament.h

@@ -26,8 +26,9 @@ static constexpr modules::motion::P_speed_t ejectSpeed = 1000.0_P_mm_s; //@@TODO
 /// The Eject message is not an error, but we'll leverage existing infrastructure of error screens + user input to model a nice UI dialog.
 class EjectFilament : public CommandBase {
 public:
-    inline EjectFilament()
-        : CommandBase() {}
+    inline constexpr EjectFilament()
+        : CommandBase()
+        , slot(0) {}
 
     /// Restart the automaton
     /// @param param index of filament slot to eject

src/logic/feed_to_bondtech.h

@@ -30,7 +30,7 @@ struct FeedToBondtech {
         //        PulleyStalled
     };
 
-    inline FeedToBondtech()
+    inline constexpr FeedToBondtech()
         : state(OK)
         , maxRetries(1) {}
 

src/logic/feed_to_finda.h

@@ -23,9 +23,10 @@ struct FeedToFinda {
         Stopped
     };
 
-    inline FeedToFinda()
+    inline constexpr FeedToFinda()
         : state(OK)
-        , feedPhaseLimited(true) {}
+        , feedPhaseLimited(true)
+        , haltAtEnd(0) {}
 
     /// Restart the automaton
     /// @param feedPhaseLimited

src/logic/home.h

@@ -20,7 +20,7 @@ namespace logic {
 /// This high-level command is just a way to invoke re-homing from the printer while all safety measures are kept.
 class Home : public CommandBase {
 public:
-    inline Home()
+    inline constexpr Home()
         : CommandBase() {}
 
     /// Restart the automaton

src/logic/hw_sanity.h

@@ -14,7 +14,7 @@ namespace logic {
 
 class HWSanity : public CommandBase {
 public:
-    inline HWSanity()
+    inline constexpr HWSanity()
         : CommandBase() {}
 
     /// Restart the automaton
@@ -44,7 +44,7 @@ private:
     static void PrepareAxis(config::Axis axis);
 
     uint8_t test_step = 0;
-    config::Axis axis;
+    config::Axis axis = config::Axis::Pulley;
     uint8_t fault_masks[3] = { 0 };
     ProgressCode next_state = ProgressCode::HWTestBegin;
     uint16_t wait_start = 0;

src/logic/load_filament.h

@@ -10,9 +10,10 @@ namespace logic {
 /// @brief A high-level command state machine - handles the complex logic of loading filament into a filament slot.
 class LoadFilament : public CommandBase {
 public:
-    inline LoadFilament()
+    inline constexpr LoadFilament()
         : CommandBase()
-        , verifyLoadedFilament(0) {}
+        , verifyLoadedFilament(0)
+        , result(ResultCode::OK) {}
 
     /// Restart the automaton - performs unlimited rotation of the Pulley
     /// @param param index of filament slot to load

src/logic/move_selector.h

@@ -15,7 +15,7 @@ namespace logic {
 /// and/or from the MMU's buttons while all safety measures are kept.
 class MoveSelector : public CommandBase {
 public:
-    inline MoveSelector()
+    inline constexpr MoveSelector()
         : CommandBase() {}
 
     /// Restart the automaton

src/logic/no_command.h

@@ -8,7 +8,7 @@ namespace logic {
 /// @brief A dummy No-command operation just to make the init of the firmware consistent (and cleaner code during processing).
 class NoCommand : public CommandBase {
 public:
-    inline NoCommand()
+    inline constexpr NoCommand()
         : CommandBase() {}
 
     /// Restart the automaton

src/logic/retract_from_finda.h

@@ -20,7 +20,7 @@ struct RetractFromFinda {
         Failed
     };
 
-    inline RetractFromFinda()
+    inline constexpr RetractFromFinda()
         : state(OK) {}
 
     /// Restart the automaton

src/logic/set_mode.h

@@ -13,7 +13,7 @@ namespace logic {
 /// (regardless of how long it takes it to finish) - that implies no motor moves are being performed while M0/M1 is being applied.
 class SetMode : public CommandBase {
 public:
-    inline SetMode()
+    inline constexpr SetMode()
         : CommandBase() {}
 
     /// Restart the automaton

src/logic/start_up.h

@@ -8,7 +8,7 @@ namespace logic {
 /// @brief Firmware start up sequence with error handling & reporting
 class StartUp : public CommandBase {
 public:
-    inline StartUp()
+    inline constexpr StartUp()
         : CommandBase() {}
 
     /// Restart the automaton

src/logic/tool_change.h

@@ -11,8 +11,9 @@ namespace logic {
 /// @brief  A high-level command state machine - handles the complex logic of tool change - which is basically a chain of an Unload and a Load operation.
 class ToolChange : public CommandBase {
 public:
-    inline ToolChange()
-        : CommandBase() {}
+    inline constexpr ToolChange()
+        : CommandBase()
+        , plannedSlot(-1) {}
 
     /// Restart the automaton
     /// @param param index of filament slot to change to - i.e. to load

src/logic/unload_filament.h

@@ -11,7 +11,7 @@ namespace logic {
 /// @brief A high-level command state machine - handles the complex logic of unloading filament
 class UnloadFilament : public CommandBase {
 public:
-    inline UnloadFilament()
+    inline constexpr UnloadFilament()
         : CommandBase() {}
 
     /// Restart the automaton

src/logic/unload_to_finda.h

@@ -21,8 +21,10 @@ struct UnloadToFinda {
         FailedFINDA,
         FailedFSensor
     };
-    inline UnloadToFinda()
-        : maxTries(3) {}
+    inline constexpr UnloadToFinda()
+        : state(OK)
+        , maxTries(3)
+        , unloadStart_mm(0) {}
 
     /// Restart the automaton
     /// @param maxTries maximum number of retried attempts before reporting a fail