Added EraseTargetMemory TC command

src/DebugServer/Gdb/AvrGdb/CommandPackets/FlashErase.cpp

@@ -27,7 +27,7 @@ namespace Bloom::DebugServer::Gdb::AvrGdb::CommandPackets
          * The flash erase ('vFlashErase') packet consists of two segments, an address and a length, separated by a
          * comma.
          */
-        auto packetSegments = packetString.split(",");
+        const auto packetSegments = packetString.split(",");
         if (packetSegments.size() != 2) {
             throw Exception(
                 "Unexpected number of segments in packet data: " + std::to_string(packetSegments.size())
@@ -52,24 +52,12 @@ namespace Bloom::DebugServer::Gdb::AvrGdb::CommandPackets
         Logger::debug("Handling FlashErase packet");
 
         try {
-            const auto flashPageSize = debugSession.gdbTargetDescriptor.targetDescriptor.memoryDescriptorsByType.at(
-                Targets::TargetMemoryType::FLASH
-            ).pageSize.value();
-
-            if ((this->bytes % flashPageSize) != 0) {
-                throw Exception(
-                    "Invalid erase size (" + std::to_string(this->bytes) + " bytes) provided by GDB - must be a "
-                    "multiple of the target's flash page size (" + std::to_string(flashPageSize) + " bytes)"
-                );
-            }
-
             targetControllerConsole.enableProgrammingMode();
 
-            targetControllerConsole.writeMemory(
-                Targets::TargetMemoryType::FLASH,
-                this->startAddress,
-                Targets::TargetMemoryBuffer(this->bytes, 0xFF)
-            );
+            Logger::warning("Erasing entire chip, in preparation for programming");
+
+            // We don't erase a specific address range - we just erase the entire program memory.
+            targetControllerConsole.eraseMemory(Targets::TargetMemoryType::FLASH);
 
             debugSession.connection.writePacket(OkResponsePacket());
 

src/TargetController/Commands/CommandTypes.hpp

@@ -18,6 +18,7 @@ namespace Bloom::TargetController::Commands
         WRITE_TARGET_REGISTERS,
         READ_TARGET_MEMORY,
         WRITE_TARGET_MEMORY,
+        ERASE_TARGET_MEMORY,
         GET_TARGET_STATE,
         STEP_TARGET_EXECUTION,
         SET_BREAKPOINT,

src/TargetController/Commands/EraseTargetMemory.hpp

@@ -0,0 +1,33 @@
+#pragma once
+
+#include "Command.hpp"
+
+#include "src/Targets/TargetMemory.hpp"
+
+namespace Bloom::TargetController::Commands
+{
+    class EraseTargetMemory: public Command
+    {
+    public:
+        static constexpr CommandType type = CommandType::ERASE_TARGET_MEMORY;
+        static const inline std::string name = "EraseTargetMemory";
+
+        Targets::TargetMemoryType memoryType;
+
+        EraseTargetMemory(Targets::TargetMemoryType memoryType)
+            : memoryType(memoryType)
+        {};
+
+        [[nodiscard]] CommandType getType() const override {
+            return EraseTargetMemory::type;
+        }
+
+        [[nodiscard]] bool requiresStoppedTargetState() const override {
+            return true;
+        }
+
+        [[nodiscard]] bool requiresDebugMode() const override {
+            return this->memoryType == Targets::TargetMemoryType::RAM;
+        }
+    };
+}

src/TargetController/TargetControllerComponent.cpp

@@ -37,6 +37,7 @@ namespace Bloom::TargetController
     using Commands::WriteTargetRegisters;
     using Commands::ReadTargetMemory;
     using Commands::WriteTargetMemory;
+    using Commands::EraseTargetMemory;
     using Commands::StepTargetExecution;
     using Commands::SetBreakpoint;
     using Commands::RemoveBreakpoint;
@@ -220,6 +221,10 @@ namespace Bloom::TargetController
             std::bind(&TargetControllerComponent::handleWriteTargetMemory, this, std::placeholders::_1)
         );
 
+        this->registerCommandHandler<EraseTargetMemory>(
+            std::bind(&TargetControllerComponent::handleEraseTargetMemory, this, std::placeholders::_1)
+        );
+
         this->registerCommandHandler<StepTargetExecution>(
             std::bind(&TargetControllerComponent::handleStepTargetExecution, this, std::placeholders::_1)
         );
@@ -930,6 +935,21 @@ namespace Bloom::TargetController
         return std::make_unique<Response>();
     }
 
+    std::unique_ptr<Response> TargetControllerComponent::handleEraseTargetMemory(EraseTargetMemory& command) {
+        const auto& targetDescriptor = this->getTargetDescriptor();
+
+        if (
+            command.memoryType == this->getTargetDescriptor().programMemoryType
+            && !this->target->programmingModeEnabled()
+        ) {
+            throw Exception("Cannot erase program memory - programming mode not enabled.");
+        }
+
+        this->target->eraseMemory(command.memoryType);
+
+        return std::make_unique<Response>();
+    }
+
     std::unique_ptr<Response> TargetControllerComponent::handleStepTargetExecution(StepTargetExecution& command) {
         if (command.fromProgramCounter.has_value()) {
             this->target->setProgramCounter(command.fromProgramCounter.value());

src/TargetController/TargetControllerComponent.hpp

@@ -32,6 +32,7 @@
 #include "Commands/WriteTargetRegisters.hpp"
 #include "Commands/ReadTargetMemory.hpp"
 #include "Commands/WriteTargetMemory.hpp"
+#include "Commands/EraseTargetMemory.hpp"
 #include "Commands/StepTargetExecution.hpp"
 #include "Commands/SetBreakpoint.hpp"
 #include "Commands/RemoveBreakpoint.hpp"
@@ -350,6 +351,7 @@ namespace Bloom::TargetController
         std::unique_ptr<Responses::Response> handleWriteTargetRegisters(Commands::WriteTargetRegisters& command);
         std::unique_ptr<Responses::TargetMemoryRead> handleReadTargetMemory(Commands::ReadTargetMemory& command);
         std::unique_ptr<Responses::Response> handleWriteTargetMemory(Commands::WriteTargetMemory& command);
+        std::unique_ptr<Responses::Response> handleEraseTargetMemory(Commands::EraseTargetMemory& command);
         std::unique_ptr<Responses::Response> handleStepTargetExecution(Commands::StepTargetExecution& command);
         std::unique_ptr<Responses::Response> handleSetBreakpoint(Commands::SetBreakpoint& command);
         std::unique_ptr<Responses::Response> handleRemoveBreakpoint(Commands::RemoveBreakpoint& command);

src/TargetController/TargetControllerConsole.cpp

@@ -13,6 +13,7 @@
 #include "Commands/WriteTargetRegisters.hpp"
 #include "Commands/ReadTargetMemory.hpp"
 #include "Commands/WriteTargetMemory.hpp"
+#include "Commands/EraseTargetMemory.hpp"
 #include "Commands/StepTargetExecution.hpp"
 #include "Commands/SetBreakpoint.hpp"
 #include "Commands/RemoveBreakpoint.hpp"
@@ -38,6 +39,7 @@ namespace Bloom::TargetController
     using Commands::WriteTargetRegisters;
     using Commands::ReadTargetMemory;
     using Commands::WriteTargetMemory;
+    using Commands::EraseTargetMemory;
     using Commands::StepTargetExecution;
     using Commands::SetBreakpoint;
     using Commands::RemoveBreakpoint;
@@ -190,6 +192,13 @@ namespace Bloom::TargetController
         );
     }
 
+    void TargetControllerConsole::eraseMemory(Targets::TargetMemoryType memoryType) {
+        this->commandManager.sendCommandAndWaitForResponse(
+            std::make_unique<EraseTargetMemory>(memoryType),
+            this->defaultTimeout
+        );
+    }
+
     void TargetControllerConsole::setBreakpoint(TargetBreakpoint breakpoint) {
         this->commandManager.sendCommandAndWaitForResponse(
             std::make_unique<SetBreakpoint>(breakpoint),

src/TargetController/TargetControllerConsole.hpp

@@ -138,6 +138,13 @@ namespace Bloom::TargetController
             const Targets::TargetMemoryBuffer& buffer
         );
 
+        /**
+         * Requests the TargetController to erase the given target memory type.
+         *
+         * @param memoryType
+         */
+        void eraseMemory(Targets::TargetMemoryType memoryType);
+
         /**
          * Requests the TargetController to set a breakpoint on the target.
          *