diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index e80666b..080e70d 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -3,5 +3,8 @@
     // for the documentation about the extensions.json format
     "recommendations": [
         "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
     ]
 }
diff --git a/src/cc1310_platform.cpp b/src/cc1310_platform.cpp
index 18e1289..2994b54 100644
--- a/src/cc1310_platform.cpp
+++ b/src/cc1310_platform.cpp
@@ -495,7 +495,7 @@ void CC1310Platform::init()
     setupNVS();
 }
 
-uint8_t* CC1310Platform::getEepromBuffer(uint16_t size)
+uint8_t* CC1310Platform::getEepromBuffer(uint32_t size)
 {
     if(size > KNX_FLASH_SIZE)
     {
diff --git a/src/cc1310_platform.h b/src/cc1310_platform.h
index 17086ab..1014f0f 100644
--- a/src/cc1310_platform.h
+++ b/src/cc1310_platform.h
@@ -20,7 +20,7 @@ class CC1310Platform : public Platform
     void restart() final;
     void fatalError() final;
 
-    uint8_t* getEepromBuffer(uint16_t size) final;
+    uint8_t* getEepromBuffer(uint32_t size) final;
     void commitToEeprom() final;
 };
 
diff --git a/src/esp32_platform.cpp b/src/esp32_platform.cpp
index f6c4812..ada8fd3 100644
--- a/src/esp32_platform.cpp
+++ b/src/esp32_platform.cpp
@@ -108,7 +108,7 @@ bool Esp32Platform::sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buff
     return true;
 }
 
-uint8_t * Esp32Platform::getEepromBuffer(uint16_t size)
+uint8_t * Esp32Platform::getEepromBuffer(uint32_t size)
 {
     uint8_t * eepromptr = EEPROM.getDataPtr();
     if(eepromptr == nullptr) {
diff --git a/src/esp32_platform.h b/src/esp32_platform.h
index 07b0d75..0193efe 100644
--- a/src/esp32_platform.h
+++ b/src/esp32_platform.h
@@ -32,7 +32,7 @@ public:
     bool sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buffer, uint16_t len) override;
 
     //memory
-    uint8_t* getEepromBuffer(uint16_t size);
+    uint8_t* getEepromBuffer(uint32_t size);
     void commitToEeprom();
 private:
     WiFiUDP _udp;
diff --git a/src/esp_platform.cpp b/src/esp_platform.cpp
index b74dedd..f155d52 100644
--- a/src/esp_platform.cpp
+++ b/src/esp_platform.cpp
@@ -108,7 +108,7 @@ bool EspPlatform::sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buffer
     return true;
 }
 
-uint8_t * EspPlatform::getEepromBuffer(uint16_t size)
+uint8_t * EspPlatform::getEepromBuffer(uint32_t size)
 {
     uint8_t * eepromptr = EEPROM.getDataPtr();
     if(eepromptr == nullptr) {
diff --git a/src/esp_platform.h b/src/esp_platform.h
index c535bae..ce55d13 100644
--- a/src/esp_platform.h
+++ b/src/esp_platform.h
@@ -32,7 +32,7 @@ class EspPlatform : public ArduinoPlatform
     bool sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buffer, uint16_t len) override;
     
     //memory
-    uint8_t* getEepromBuffer(uint16_t size);
+    uint8_t* getEepromBuffer(uint32_t size);
     void commitToEeprom();
 private:
     WiFiUDP _udp;
diff --git a/src/knx/platform.cpp b/src/knx/platform.cpp
index 3c2a74e..2b77893 100644
--- a/src/knx/platform.cpp
+++ b/src/knx/platform.cpp
@@ -128,7 +128,7 @@ void Platform::flashErase(uint16_t eraseBlockNum)
 void Platform::flashWritePage(uint16_t pageNumber, uint8_t* data)
 {}
 
-uint8_t * Platform::getEepromBuffer(uint16_t size)
+uint8_t * Platform::getEepromBuffer(uint32_t size)
 {
     return nullptr;
 }
@@ -201,6 +201,37 @@ uint32_t Platform::writeNonVolatileMemory(uint32_t relativeAddress, uint8_t* buf
     }
 }
 
+// writes value repeat times into flash starting at relativeAddress
+// returns next free relativeAddress
+uint32_t Platform::writeNonVolatileMemory(uint32_t relativeAddress, uint8_t value, size_t repeat)
+{
+    if(_memoryType == Flash)
+    {
+        while (repeat > 0)
+        {
+            loadEraseblockContaining(relativeAddress);
+            uint32_t start = _bufferedEraseblockNumber * (flashEraseBlockSize() * flashPageSize());
+            uint32_t end = start +  (flashEraseBlockSize() * flashPageSize());
+
+            uint32_t offset = relativeAddress - start;
+            uint32_t length = end - relativeAddress;
+            if(length > repeat)
+                length = repeat;
+            memset(_eraseblockBuffer + offset, value, length);
+            _bufferedEraseblockDirty = true;
+
+            relativeAddress += length;
+            repeat -= length;
+        }
+        return relativeAddress;
+    }
+    else
+    {
+        memset(getEepromBuffer(KNX_FLASH_SIZE)+relativeAddress, value, repeat);
+        return relativeAddress+repeat;
+    }
+}
+
 void Platform::loadEraseblockContaining(uint32_t relativeAddress)
 {
     int32_t blockNum = getEraseBlockNumberOf(relativeAddress);
diff --git a/src/knx/platform.h b/src/knx/platform.h
index 21a2867..b8fafff 100644
--- a/src/knx/platform.h
+++ b/src/knx/platform.h
@@ -61,7 +61,7 @@ class Platform
     //
     // --- changes to the UserMemory are written directly into the address space starting at getEepromBuffer
     // --- commitToEeprom must save this to a non-volatile area if neccessary
-    virtual uint8_t* getEepromBuffer(uint16_t size);
+    virtual uint8_t* getEepromBuffer(uint32_t size);
     virtual void commitToEeprom();
     // -------------------------------------------------------------------------------------------------------
 
@@ -70,6 +70,7 @@ class Platform
     virtual void commitNonVolatileMemory();
     // address is relative to start of nonvolatile memory
     virtual uint32_t writeNonVolatileMemory(uint32_t relativeAddress, uint8_t* buffer, size_t size);
+    virtual uint32_t writeNonVolatileMemory(uint32_t relativeAddress, uint8_t value, size_t repeat);
 
     NvMemoryType NonVolatileMemoryType();
     void NonVolatileMemoryType(NvMemoryType type);
diff --git a/src/linux_platform.cpp b/src/linux_platform.cpp
index 4ad15b3..8ebac4a 100644
--- a/src/linux_platform.cpp
+++ b/src/linux_platform.cpp
@@ -265,7 +265,7 @@ int LinuxPlatform::readBytesMultiCast(uint8_t* buffer, uint16_t maxLen)
     return len;
 }
 
-uint8_t* LinuxPlatform::getEepromBuffer(uint16_t size)
+uint8_t* LinuxPlatform::getEepromBuffer(uint32_t size)
 {
     if (_fd < 0)
         doMemoryMapping();
diff --git a/src/linux_platform.h b/src/linux_platform.h
index 0ec9bb9..d691e63 100644
--- a/src/linux_platform.h
+++ b/src/linux_platform.h
@@ -55,7 +55,7 @@ public:
     int readWriteSpi (uint8_t *data, size_t len) override;
 
     //memory
-    uint8_t* getEepromBuffer(uint16_t size) override;
+    uint8_t* getEepromBuffer(uint32_t size) override;
     void commitToEeprom() override;
     void cmdlineArgs(int argc, char** argv);
 
diff --git a/src/rp2040_arduino_platform.cpp b/src/rp2040_arduino_platform.cpp
index 0374e85..44eb8c4 100644
--- a/src/rp2040_arduino_platform.cpp
+++ b/src/rp2040_arduino_platform.cpp
@@ -109,7 +109,7 @@ void RP2040ArduinoPlatform::restart()
 
 #ifdef USE_RP2040_LARGE_EEPROM_EMULATION
 
-uint8_t * RP2040ArduinoPlatform::getEepromBuffer(uint16_t size)
+uint8_t * RP2040ArduinoPlatform::getEepromBuffer(uint32_t size)
 {
     if(size%4096)
     {
@@ -144,7 +144,7 @@ void RP2040ArduinoPlatform::commitToEeprom()
 
 #else
 
-uint8_t * RP2040ArduinoPlatform::getEepromBuffer(uint16_t size)
+uint8_t * RP2040ArduinoPlatform::getEepromBuffer(uint32_t size)
 {
     if(size > 4096)
     {
diff --git a/src/rp2040_arduino_platform.h b/src/rp2040_arduino_platform.h
index 77a8736..15e6dcb 100644
--- a/src/rp2040_arduino_platform.h
+++ b/src/rp2040_arduino_platform.h
@@ -30,7 +30,7 @@ public:
     void restart();
 
     #ifdef USE_RP2040_EEPROM_EMULATION
-    uint8_t* getEepromBuffer(uint16_t size);
+    uint8_t* getEepromBuffer(uint32_t size);
     void commitToEeprom();
 
     #ifdef USE_RP2040_LARGE_EEPROM_EMULATION
diff --git a/src/samd_platform.cpp b/src/samd_platform.cpp
index fc85645..a1eb786 100644
--- a/src/samd_platform.cpp
+++ b/src/samd_platform.cpp
@@ -61,7 +61,7 @@ void SamdPlatform::restart()
 
 #ifdef USE_SAMD_EEPROM_EMULATION
 #pragma warning "Using EEPROM Simulation"
-uint8_t* SamdPlatform::getEepromBuffer(uint16_t size)
+uint8_t* SamdPlatform::getEepromBuffer(uint32_t size)
 {
     //EEPROM.begin(size);
     if(size > EEPROM_EMULATION_SIZE)
diff --git a/src/samd_platform.h b/src/samd_platform.h
index fb22dc6..948a5d8 100644
--- a/src/samd_platform.h
+++ b/src/samd_platform.h
@@ -17,7 +17,7 @@ public:
 
     void restart();
 #ifdef USE_SAMD_EEPROM_EMULATION
-    uint8_t* getEepromBuffer(uint16_t size);
+    uint8_t* getEepromBuffer(uint32_t size);
     void commitToEeprom();
 #else
     // size of one EraseBlock in pages
diff --git a/src/stm32_platform.cpp b/src/stm32_platform.cpp
index fd6ea37..f5e5b28 100644
--- a/src/stm32_platform.cpp
+++ b/src/stm32_platform.cpp
@@ -34,7 +34,7 @@ void Stm32Platform::restart()
     NVIC_SystemReset();
 }
 
-uint8_t * Stm32Platform::getEepromBuffer(uint16_t size)
+uint8_t * Stm32Platform::getEepromBuffer(uint32_t size)
 {
     // check if the buffer already exists
     if (_eepromPtr == nullptr) // we need to initialize the buffer first
diff --git a/src/stm32_platform.h b/src/stm32_platform.h
index 056a327..7545ca0 100644
--- a/src/stm32_platform.h
+++ b/src/stm32_platform.h
@@ -15,7 +15,7 @@ public:
     void restart();
     
     //memory
-    uint8_t* getEepromBuffer(uint16_t size);
+    uint8_t* getEepromBuffer(uint32_t size);
     void commitToEeprom();
 private:
     uint8_t *_eepromPtr = nullptr;