Fixed filament functions for usage with SBC

Author: chrishamm

src/GCodes/GCodes.cpp

@@ -566,6 +566,12 @@ void GCodes::DoFilePrint(GCodeBuffer& gb, const StringRef& reply)
 						HandleReply(gb, GCodeResult::ok, "");
 					}
 				}
+				else if (gb.GetState() == GCodeState::loadingFilament && hadFileError)
+				{
+					// Don't perform final filament assignment if the load macro could not be processed
+					gb.SetState(GCodeState::normal);
+					HandleReply(gb, GCodeResult::ok, "");
+				}
 				else if (gb.GetState() == GCodeState::normal)
 				{
 					UnlockAll(gb);
@@ -3505,14 +3511,6 @@ GCodeResult GCodes::LoadFilament(GCodeBuffer& gb, const StringRef& reply)
 			return GCodeResult::error;
 		}
 
-#if HAS_MASS_STORAGE
-		if (!platform.DirectoryExists(FILAMENTS_DIRECTORY, filamentName.c_str()))
-		{
-			reply.copy("Filament configuration directory not found");
-			return GCodeResult::error;
-		}
-#endif
-
 		if (Filament::IsInUse(filamentName.c_str()))
 		{
 			reply.copy("One filament type can be only assigned to a single tool");

src/GCodes/GCodes2.cpp

@@ -3997,10 +3997,11 @@ bool GCodes::HandleMcode(GCodeBuffer& gb, const StringRef& reply)
 	case 703: // Configure Filament
 		if (reprap.GetCurrentTool() != nullptr)
 		{
-			if (reprap.GetCurrentTool()->GetFilament() != nullptr)
+			const Filament *filament = reprap.GetCurrentTool()->GetFilament();
+			if (filament != nullptr && filament->IsLoaded())
 			{
 				String<ScratchStringLength> scratchString;
-				scratchString.printf("%s%s/%s", FILAMENTS_DIRECTORY, reprap.GetCurrentTool()->GetFilament()->GetName(), CONFIG_FILAMENT_G);
+				scratchString.printf("%s%s/%s", FILAMENTS_DIRECTORY, filament->GetName(), CONFIG_FILAMENT_G);
 				DoFileMacro(gb, scratchString.c_str(), false, 703);
 			}
 		}

src/Linux/LinuxInterface.cpp

@@ -294,7 +294,14 @@ void LinuxInterface::Spin()
 				Filament *filament = Filament::GetFilamentByExtruder(extruder);
 				if (filament != nullptr)
 				{
-					filament->Load(filamentName.c_str());
+					if (filamentName.IsEmpty())
+					{
+						filament->Unload();
+					}
+					else
+					{
+						filament->Load(filamentName.c_str());
+					}
 				}
 				break;
 			}

src/Tools/Filament.cpp

@@ -42,6 +42,14 @@ void Filament::Unload() noexcept
 void Filament::LoadAssignment() noexcept
 {
 #if HAS_MASS_STORAGE
+# if HAS_LINUX_INTERFACE
+	if (reprap.UsingLinuxInterface())
+	{
+		// Filament configuration is saved on the SBC
+		return;
+	}
+# endif
+
 	FileStore *file = reprap.GetPlatform().OpenSysFile(FilamentAssignmentFile, OpenMode::read);
 	if (file == nullptr)
 	{
@@ -81,6 +89,14 @@ void Filament::LoadAssignment() noexcept
 /*static*/ void Filament::SaveAssignments() noexcept
 {
 #if HAS_MASS_STORAGE
+# if HAS_LINUX_INTERFACE
+	if (reprap.UsingLinuxInterface())
+	{
+		// Filament configuration is saved on the SBC
+		return;
+	}
+# endif
+
 	FileStore * const file = reprap.GetPlatform().OpenSysFile(FilamentAssignmentFile, OpenMode::write);
 	if (file == nullptr)
 	{