Delta programming - where we only upload what's changed

src/Targets/Microchip/Avr8/Avr8.cpp

@@ -656,6 +656,7 @@ namespace Targets::Microchip::Avr8
             return;
         }
 
+        this->avr8DebugInterface->clearAllBreakpoints();
         this->avr8DebugInterface->enableProgrammingMode();
         this->activeProgrammingSession = ProgrammingSession();
     }
@@ -687,6 +688,32 @@ namespace Targets::Microchip::Avr8
         return std::nullopt;
     }
 
+    DeltaProgramming::DeltaProgrammingInterface* Avr8::deltaProgrammingInterface() {
+        if (
+            this->targetConfig.physicalInterface == TargetPhysicalInterface::DEBUG_WIRE
+            || this->targetConfig.physicalInterface == TargetPhysicalInterface::UPDI
+        ) {
+            return this;
+        }
+
+        return nullptr;
+    }
+
+    TargetMemorySize Avr8::deltaBlockSize(
+        const TargetAddressSpaceDescriptor& addressSpaceDescriptor,
+        const TargetMemorySegmentDescriptor& memorySegmentDescriptor
+    ) {
+        return memorySegmentDescriptor.pageSize.value_or(1);
+    }
+
+    bool Avr8::shouldAbandonSession(
+        const TargetAddressSpaceDescriptor& addressSpaceDescriptor,
+        const TargetMemorySegmentDescriptor& memorySegmentDescriptor,
+        const std::vector<DeltaProgramming::Session::WriteOperation::Region>& deltaSegments
+    ) {
+        return false;
+    }
+
     std::map<TargetPadId, GpioPadDescriptor> Avr8::generateGpioPadDescriptorMapping(
         const std::vector<TargetPeripheralDescriptor>& portPeripheralDescriptors
     ) {

src/Targets/Microchip/Avr8/Avr8.hpp

@@ -22,6 +22,7 @@
 #include "src/Targets/TargetBitFieldDescriptor.hpp"
 #include "src/Targets/TargetPadDescriptor.hpp"
 #include "src/Targets/TargetBreakpoint.hpp"
+#include "src/Targets/DeltaProgramming/DeltaProgrammingInterface.hpp"
 
 #include "TargetDescriptionFile.hpp"
 
@@ -29,7 +30,9 @@
 
 namespace Targets::Microchip::Avr8
 {
-    class Avr8: public Target
+    class Avr8
+        : public Target
+        , public DeltaProgramming::DeltaProgrammingInterface
     {
     public:
         explicit Avr8(const TargetConfig& targetConfig, TargetDescriptionFile&& targetDescriptionFile);
@@ -111,6 +114,17 @@ namespace Targets::Microchip::Avr8
         std::string passthroughCommandHelpText() override;
         std::optional<PassthroughResponse> invokePassthroughCommand(const PassthroughCommand& command) override;
 
+        DeltaProgramming::DeltaProgrammingInterface* deltaProgrammingInterface() override;
+        TargetMemorySize deltaBlockSize(
+            const TargetAddressSpaceDescriptor& addressSpaceDescriptor,
+            const TargetMemorySegmentDescriptor& memorySegmentDescriptor
+        ) override;
+        bool shouldAbandonSession(
+            const TargetAddressSpaceDescriptor& addressSpaceDescriptor,
+            const TargetMemorySegmentDescriptor& memorySegmentDescriptor,
+            const std::vector<DeltaProgramming::Session::WriteOperation::Region>& deltaSegments
+        ) override;
+
     protected:
         DebugToolDrivers::TargetInterfaces::TargetPowerManagementInterface* targetPowerManagementInterface = nullptr;
         DebugToolDrivers::TargetInterfaces::Microchip::Avr8::Avr8DebugInterface* avr8DebugInterface = nullptr;