Merge pull request #316 from thewhobox/fix/unloading

Permanently unload device

examples/knx-demo/.gitignore

@@ -0,0 +1,5 @@
+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch

src/knx/bau_systemB_device.cpp

@@ -49,6 +49,7 @@ void BauSystemBDevice::loop()
 #ifdef USE_DATASECURE
     _appLayer.loop();
 #endif
+    _memory.loop();
 }
 
 void BauSystemBDevice::sendNextGroupTelegram()

src/knx/memory.cpp

@@ -301,10 +301,15 @@ void Memory::freeMemory(uint8_t* ptr)
 
     removeFromUsedList(block);
     addToFreeList(block);
+    _saveTimeout = millis();
 }
 
 void Memory::writeMemory(uint32_t relativeAddress, size_t size, uint8_t* data)
 {
+    if(_saveTimeout != 0)
+    {
+        _saveTimeout = millis();
+    }
     _platform.writeNonVolatileMemory(relativeAddress, data, size);
 }
 
@@ -541,3 +546,13 @@ VersionCheckCallback Memory::versionCheckCallback()
 {
     return _versionCheckCallback;
 }
+
+void Memory::loop()
+{
+    if(_saveTimeout != 0 && millis() - _saveTimeout > 5000)
+    {
+        println("saveMemory timeout");
+        _saveTimeout = 0;
+        writeMemory();
+    }
+}

src/knx/memory.h

@@ -46,6 +46,7 @@ class Memory
         void clearMemory();
         void addSaveRestore(SaveRestore* obj);
         void addSaveRestore(TableObject* obj);
+        void loop();
 
         uint8_t* allocMemory(size_t size);
         void freeMemory(uint8_t* ptr);
@@ -82,4 +83,5 @@ class Memory
         MemoryBlock* _freeList = nullptr;
         MemoryBlock* _usedList = nullptr;
         uint16_t _metadataSize = 6 + LEN_HARDWARE_TYPE; // accounting for 3x pushWord and pushByteArray of length LEN_HARDWARE_TYPE
+        unsigned long _saveTimeout = 0;
 };