diff --git a/knx-linux/main.cpp b/knx-linux/main.cpp
index 31723b6..3a38d4a 100644
--- a/knx-linux/main.cpp
+++ b/knx-linux/main.cpp
@@ -6,15 +6,14 @@
 #include <stdlib.h>
 #include <stdio.h>
 
-KnxFacade* knx = 0;
-Platform* platform = 0;
+KnxFacade<LinuxPlatform, Bau57B0> knx;
 
 long lastsend = 0;
 
-#define CURR knx->getGroupObject(1)
-#define MAX knx->getGroupObject(2)
-#define MIN knx->getGroupObject(3)
-#define RESET knx->getGroupObject(4)
+#define CURR knx.getGroupObject(1)
+#define MAX knx.getGroupObject(2)
+#define MIN knx.getGroupObject(3)
+#define RESET knx.getGroupObject(4)
 
 void measureTemp()
 {
@@ -52,7 +51,7 @@ void resetCallback(GroupObject& go)
 
 void appLoop()
 {
-    if (!knx->configured())
+    if (!knx.configured())
         return;
     
     measureTemp();
@@ -61,12 +60,12 @@ void appLoop()
 void setup()
 {
     srand((unsigned int)time(NULL));
-    knx->readMemory();
+    knx.readMemory();
 
-    if (knx->induvidualAddress() == 0)
-        knx->progMode(true);
+    if (knx.induvidualAddress() == 0)
+        knx.progMode(true);
 
-    if (knx->configured())
+    if (knx.configured())
     {
         CURR.dataPointType(Dpt(9, 1));
         MIN.dataPointType(Dpt(9, 1));
@@ -75,27 +74,25 @@ void setup()
         MAX.valueNoSend(-273.0);
         RESET.dataPointType(Dpt(1, 15));
         RESET.callback(resetCallback);
-        printf("Timeout: %d\n", knx->paramWord(0));
-        printf("Zykl. senden: %d\n", knx->paramByte(2));
-        printf("Min/Max senden: %d\n", knx->paramByte(3));
-        printf("Aenderung senden: %d\n", knx->paramByte(4));
-        printf("Abgleich %d\n", knx->paramByte(5));
+        printf("Timeout: %d\n", knx.paramWord(0));
+        printf("Zykl. senden: %d\n", knx.paramByte(2));
+        printf("Min/Max senden: %d\n", knx.paramByte(3));
+        printf("Aenderung senden: %d\n", knx.paramByte(4));
+        printf("Abgleich %d\n", knx.paramByte(5));
     }
-    knx->start();
+    knx.start();
 }
 
 int main(int argc, char **argv)
 {
-    platform = new LinuxPlatform(argc, argv);
-    Bau57B0 bau(*platform);
-    knx = new KnxFacade(bau);
-    
+    knx.platform().cmdLineArgs(argc, argv);
+
     setup();
     
     while (1)
     {
-        knx->loop();
-        if(knx->configured())
+        knx.loop();
+        if(knx.configured())
             appLoop();
         delay(100);
     }
diff --git a/src/knx/bau.h b/src/knx/bau.h
index a6cbd8d..14ca5b5 100644
--- a/src/knx/bau.h
+++ b/src/knx/bau.h
@@ -5,6 +5,7 @@
 class BusAccessUnit
 {
   public:
+    virtual ~BusAccessUnit() {}
     virtual void groupValueReadLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, bool status);
     virtual void groupValueReadIndication(uint16_t asap, Priority priority, HopCountType hopType);
     virtual void groupValueReadResponseConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopTtype,
diff --git a/src/knx/bits.h b/src/knx/bits.h
index b261cec..49f20e8 100644
--- a/src/knx/bits.h
+++ b/src/knx/bits.h
@@ -14,8 +14,23 @@
 #define DEC 10
 #define HEX 16
 
+#define INPUT (0x0)
+#define OUTPUT (0x1)
+#define INPUT_PULLUP (0x2)
+#define INPUT_PULLDOWN (0x3)
+
+#define LOW (0x0)
+#define HIGH (0x1)
+#define CHANGE 2
+#define FALLING 3
+#define RISING 4
+
 void delay(uint32_t millis);
 uint32_t millis();
+void pinMode(uint32_t dwPin, uint32_t dwMode);
+void digitalWrite(uint32_t dwPin, uint32_t dwVal);
+typedef void (*voidFuncPtr)(void);
+void attachInterrupt(uint32_t pin, voidFuncPtr callback, uint32_t mode);
 
 #elif ARDUINO_ARCH_SAMD
 #include <Arduino.h>
diff --git a/src/knx/platform.h b/src/knx/platform.h
index 16c9bf0..497d98e 100644
--- a/src/knx/platform.h
+++ b/src/knx/platform.h
@@ -13,10 +13,8 @@ class Platform
     virtual uint32_t currentDefaultGateway() = 0;
     virtual void macAddress(uint8_t* data) = 0;
 
-    //virtual uint32_t millis() = 0;
     virtual void restart() = 0;
     virtual void fatalError() = 0;
-    //virtual void mdelay(uint32_t millis) = 0;
 
     virtual void setupMultiCast(uint32_t addr, uint16_t port) = 0;
     virtual void closeMultiCast() = 0;
diff --git a/src/knx_facade.cpp b/src/knx_facade.cpp
index 34ae0dc..63feeb0 100644
--- a/src/knx_facade.cpp
+++ b/src/knx_facade.cpp
@@ -3,232 +3,17 @@
 #include "knx/bits.h"
 
 #ifdef ARDUINO_ARCH_SAMD
-SamdPlatform platform;
-Bau07B0 bau(platform);
+KnxFacade<SamdPlatform, Bau07B0> knx;
 #define ICACHE_RAM_ATTR
 #elif ARDUINO_ARCH_ESP8266
-EspPlatform platform;
-Bau57B0 bau(platform);
-#elif __linux__ //linux
-// noops on linux
-#define digitalWrite(a, b)
-#define pinMode(a, b)
-#define attachInterrupt(a, b, c)
+KnxFacade<EspPlatform, Bau57B0> knx;
+#elif __linux__
+#define ICACHE_RAM_ATTR
 #endif
 
-bool _toogleProgMode = false;
-bool _progLedState = false;
-
-#ifndef __linux__
-KnxFacade knx(bau);
 ICACHE_RAM_ATTR  void buttonUp()
 {
-    _toogleProgMode = true;
-}
-#endif
-
-KnxFacade::KnxFacade(BauSystemB &bau) : _bau(bau)
-{
-    manufacturerId(0xfa);
-    _bau.addSaveRestore(this);
-}
-
-bool KnxFacade::enabled()
-{
-    return _bau.enabled();
-}
-
-void KnxFacade::enabled(bool value)
-{
-    _bau.enabled(true);
-}
-
-bool KnxFacade::progMode()
-{
-    return _bau.deviceObject().progMode();
-}
-
-void KnxFacade::progMode(bool value)
-{
-    _bau.deviceObject().progMode(value);
-}
-
-bool KnxFacade::configured()
-{
-    return _bau.configured();
-}
-
-uint32_t KnxFacade::ledPinActiveOn()
-{
-    return _ledPinActiveOn;
-}
-
-void KnxFacade::ledPinActiveOn(uint32_t value)
-{
-    _ledPinActiveOn = value;
-}
-
-uint32_t KnxFacade::ledPin()
-{
-    return _ledPin;
-}
-
-void KnxFacade::ledPin(uint32_t value)
-{
-    _ledPin = value;
-}
-
-uint32_t KnxFacade::buttonPin()
-{
-    return _buttonPin;
-}
-
-void KnxFacade::buttonPin(uint32_t value)
-{
-    _buttonPin = value;
-}
-
-void KnxFacade::readMemory()
-{
-    _bau.readMemory();
-}
-
-void KnxFacade::writeMemory()
-{
-    _bau.writeMemory();
-}
-
-void KnxFacade::loop()
-{
-    if (progMode() != _progLedState)
-    {
-        _progLedState = progMode();
-        if (_progLedState)
-        {
-            println("progmode on");
-            digitalWrite(knx.ledPin(), _ledPinActiveOn);
-        }
-        else
-        {
-            println("progmode off");
-            digitalWrite(knx.ledPin(), HIGH - _ledPinActiveOn);
-        }
-    }
-    if (_toogleProgMode)
-    {
-        progMode(!progMode());
-        _toogleProgMode = false;
-    }
-    _bau.loop();
-}
-
-void KnxFacade::manufacturerId(uint16_t value)
-{
-    _bau.deviceObject().manufacturerId(value);
-}
-
-void KnxFacade::bauNumber(uint32_t value)
-{
-    _bau.deviceObject().bauNumber(value);
-}
-
-uint16_t KnxFacade::induvidualAddress()
-{
-    return _bau.deviceObject().induvidualAddress();
-}
-
-void KnxFacade::orderNumber(const char *value)
-{
-    _bau.deviceObject().orderNumber(value);
-}
-
-void KnxFacade::hardwareType(uint8_t *value)
-{
-    _bau.deviceObject().hardwareType(value);
-}
-
-void KnxFacade::version(uint16_t value)
-{
-    _bau.deviceObject().version(value);
-}
-
-void KnxFacade::start()
-{
-    pinMode(_ledPin, OUTPUT);
-
-    digitalWrite(_ledPin, HIGH - _ledPinActiveOn);
-
-    pinMode(_buttonPin, INPUT_PULLUP);
-
-    attachInterrupt(_buttonPin, buttonUp, RISING);
-    enabled(true);
-}
-
-uint8_t *KnxFacade::paramData(uint32_t addr)
-{
-    if (!_bau.configured())
-        return nullptr;
-
-    return _bau.parameters().data(addr);
-}
-
-uint8_t KnxFacade::paramByte(uint32_t addr)
-{
-    if (!_bau.configured())
-        return 0;
-
-    return _bau.parameters().getByte(addr);
-}
-
-uint16_t KnxFacade::paramWord(uint32_t addr)
-{
-    if (!_bau.configured())
-        return 0;
-
-    return _bau.parameters().getWord(addr);
-}
-
-uint32_t KnxFacade::paramInt(uint32_t addr)
-{
-    if (!_bau.configured())
-        return 0;
-
-    return _bau.parameters().getInt(addr);
-}
-
-void KnxFacade::setSaveCallback(saveRestoreCallback func)
-{
-    _saveCallback = func;
-}
-
-void KnxFacade::setRestoreCallback(saveRestoreCallback func)
-{
-    _restoreCallback = func;
-}
-
-uint8_t *KnxFacade::save(uint8_t *buffer)
-{
-    if (_saveCallback != 0)
-        return _saveCallback(buffer);
-
-    return buffer;
-}
-
-uint8_t *KnxFacade::restore(uint8_t *buffer)
-{
-    if (_restoreCallback != 0)
-        return _restoreCallback(buffer);
-
-    return buffer;
-}
-
-GroupObject &KnxFacade::getGroupObject(uint16_t goNr)
-{
-    return _bau.groupObjectTable().get(goNr);
-}
-
-
-void KnxFacade::restart(uint16_t individualAddress)
-{
-    _bau.restartRequest(individualAddress);
-}
+    #ifndef __linux__
+    knx._toogleProgMode = true;
+    #endif
+}
\ No newline at end of file
diff --git a/src/knx_facade.h b/src/knx_facade.h
index 8155a55..469c4d3 100644
--- a/src/knx_facade.h
+++ b/src/knx_facade.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include "knx/bits.h"
+
 #ifdef ARDUINO_ARCH_SAMD
 #include "samd_platform.h"
 #include "knx/bau07B0.h"
@@ -10,67 +12,268 @@
 #include "linux_platform.h"
 #include "knx/bau57B0.h"
 #define LED_BUILTIN 0
-#define HIGH 1
-#define LOW 0
 #endif
 
-
+void buttonUp();
 typedef uint8_t* (*saveRestoreCallback)(uint8_t* buffer);
 
-class KnxFacade : private SaveRestore
+template <class P, class B> class KnxFacade : private SaveRestore
 {
-public:
-    KnxFacade(BauSystemB& bau);
-    bool enabled();
-    void enabled(bool value);
-    bool progMode();
-    void progMode(bool value);
-    bool configured();
+    friend void buttonUp();
+
+  public:
+    KnxFacade() : _platformPtr(new P()), _bauPtr(new B(*_platformPtr)), _bau(*_bauPtr)
+    {}
+    
+    virtual ~KnxFacade()
+    {
+        if (_bauPtr)
+            delete _bauPtr;
+
+        if (_platformPtr)
+            delete _platformPtr;
+    }
+
+    KnxFacade(B& bau) : _bau(bau)
+    {
+        manufacturerId(0xfa);
+        _bau.addSaveRestore(this);
+    }
+
+    P& platform()
+    {
+        return *_platformPtr;
+    }
+
+    B& bau()
+    {
+        return _bau;
+    }
+
+    bool enabled()
+    {
+        return _bau.enabled();
+    }
+    
+    void enabled(bool value)
+    {
+        _bau.enabled(true);
+    }
+    
+    bool progMode()
+    {
+        return _bau.deviceObject().progMode();
+    }
+    
+    void progMode(bool value)
+    {
+        _bau.deviceObject().progMode(value);
+    }
+    
+    bool configured()
+    {
+        return _bau.configured();
+    }
+    
     /**
      * returns HIGH if led is active on HIGH, LOW otherwise
      */
-    uint32_t ledPinActiveOn();
+    uint32_t ledPinActiveOn()
+    {
+        return _ledPinActiveOn;
+    }
+    
     /**
      * Sets if the programming led is active on HIGH or LOW. 
      * 
      * Set to HIGH for GPIO--RESISTOR--LED--GND or to LOW for GPIO--LED--RESISTOR--VDD
      */
-    void ledPinActiveOn(uint32_t value);
-    uint32_t ledPin();
-    void ledPin(uint32_t value);
-    uint32_t buttonPin();
-    void buttonPin(uint32_t value);
-    void readMemory();
-    void writeMemory();
-    uint16_t induvidualAddress();
-    void loop();
-    void manufacturerId(uint16_t value);
-    void bauNumber(uint32_t value);
-    void orderNumber(const char* value);
-    void hardwareType(uint8_t* value);
-    void version(uint16_t value);
-    void start();
-    void setSaveCallback(saveRestoreCallback func);
-    void setRestoreCallback(saveRestoreCallback func);
-    uint8_t* paramData(uint32_t addr);
-    uint8_t paramByte(uint32_t addr);
-    uint16_t paramWord(uint32_t addr);
-    uint32_t paramInt(uint32_t addr);
-    GroupObject& getGroupObject(uint16_t goNr);
-    void restart(uint16_t individualAddress);
+    void ledPinActiveOn(uint32_t value)
+    {
+        _ledPinActiveOn = value;
+    }
+    
+    uint32_t ledPin()
+    {
+        return _ledPin;
+    }
+    
+    void ledPin(uint32_t value)
+    {
+        _ledPin = value;
+    }
+    
+    uint32_t buttonPin()
+    {
+        return _buttonPin;
+    }
+    
+    void buttonPin(uint32_t value)
+    {
+        _buttonPin = value;
+    }
+    
+    void readMemory()
+    {
+        _bau.readMemory();
+    }
+    
+    void writeMemory()
+    {
+        _bau.writeMemory();
+    }
+    
+    uint16_t induvidualAddress()
+    {
+        return _bau.deviceObject().induvidualAddress();
+    }
+    
+    void loop()
+    {
+        if (progMode() != _progLedState)
+        {
+            _progLedState = progMode();
+            if (_progLedState)
+            {
+                println("progmode on");
+                digitalWrite(ledPin(), _ledPinActiveOn);
+            }
+            else
+            {
+                println("progmode off");
+                digitalWrite(ledPin(), HIGH - _ledPinActiveOn);
+            }
+        }
+        if (_toogleProgMode)
+        {
+            progMode(!progMode());
+            _toogleProgMode = false;
+        }
+        _bau.loop();
+    }
+    
+    void manufacturerId(uint16_t value)
+    {
+        _bau.deviceObject().manufacturerId(value);
+    }
+    
+    void bauNumber(uint32_t value)
+    {
+        _bau.deviceObject().bauNumber(value);
+    }
+    
+    void orderNumber(const char* value)
+    {
+        _bau.deviceObject().orderNumber(value);
+    }
+    
+    void hardwareType(uint8_t* value)
+    {
+        _bau.deviceObject().hardwareType(value);
+    }
+    
+    void version(uint16_t value)
+    {
+        _bau.deviceObject().version(value);
+    }
+    
+    void start()
+    {
+        pinMode(_ledPin, OUTPUT);
+
+        digitalWrite(_ledPin, HIGH - _ledPinActiveOn);
+
+        pinMode(_buttonPin, INPUT_PULLUP);
+
+        attachInterrupt(_buttonPin, buttonUp, RISING);
+        enabled(true);
+    }
+    
+    void setSaveCallback(saveRestoreCallback func)
+    {
+        _saveCallback = func;
+    }
+    
+    void setRestoreCallback(saveRestoreCallback func)
+    {
+        _restoreCallback = func;
+    }
+    
+    uint8_t* paramData(uint32_t addr)
+    {
+        if (!_bau.configured())
+            return nullptr;
+
+        return _bau.parameters().data(addr);
+    }
+    
+    uint8_t paramByte(uint32_t addr)
+    {
+        if (!_bau.configured())
+            return 0;
+
+        return _bau.parameters().getByte(addr);
+    }
+
+    uint16_t paramWord(uint32_t addr)
+    {
+        if (!_bau.configured())
+            return 0;
+
+        return _bau.parameters().getWord(addr);
+    }
+    
+    uint32_t paramInt(uint32_t addr)
+    {
+        if (!_bau.configured())
+            return 0;
+
+        return _bau.parameters().getInt(addr);
+    }
+    
+    GroupObject& getGroupObject(uint16_t goNr)
+    {
+        return _bau.groupObjectTable().get(goNr);
+    }
+    
+    void restart(uint16_t individualAddress)
+    {
+        _bau.restartRequest(individualAddress);
+    }
 
   private:
-    BauSystemB& _bau;
+    P* _platformPtr = 0;
+    B* _bauPtr = 0;
+    B& _bau;
 	uint32_t _ledPinActiveOn = LOW;
     uint32_t _ledPin = LED_BUILTIN;
     uint32_t _buttonPin = 0;
     saveRestoreCallback _saveCallback = 0;
     saveRestoreCallback _restoreCallback = 0;
+    bool _toogleProgMode = false;
+    bool _progLedState = false;
     
-    uint8_t* save(uint8_t* buffer);
-    uint8_t* restore(uint8_t* buffer);
+    uint8_t* save(uint8_t* buffer)
+    {
+        if (_saveCallback != 0)
+            return _saveCallback(buffer);
+
+        return buffer;
+    }
+    
+    uint8_t* restore(uint8_t* buffer)
+    {
+        if (_restoreCallback != 0)
+            return _restoreCallback(buffer);
+
+        return buffer;
+    }
 };
 
-#ifndef __linux__
-extern KnxFacade knx;
+#ifdef ARDUINO_ARCH_SAMD
+extern KnxFacade<SamdPlatform, Bau07B0> knx;
+#elif ARDUINO_ARCH_ESP8266
+extern KnxFacade<EspPlatform, Bau57B0> knx;
+#elif __linux__
+// no predefined global instance
 #endif
\ No newline at end of file
diff --git a/src/linux_platform.cpp b/src/linux_platform.cpp
index 80bf42e..3f48a18 100644
--- a/src/linux_platform.cpp
+++ b/src/linux_platform.cpp
@@ -29,13 +29,10 @@
 
 #define MAX_MEM 4096
 
-LinuxPlatform::LinuxPlatform(int argc, char** argv)
+LinuxPlatform::LinuxPlatform()
 {
     Platform::_memoryReference = (uint8_t*)malloc(MAX_MEM);
     _currentMaxMem = Platform::_memoryReference;
-    _args = new char*[argc + 1];
-    memcpy(_args, argv, argc * sizeof(char*));
-    _args[argc] = 0;
 }
 
 LinuxPlatform::~LinuxPlatform()
@@ -500,4 +497,26 @@ void println(void)
     printf("\n");
 }
 
-#endif
\ No newline at end of file
+void pinMode(uint32_t dwPin, uint32_t dwMode)
+{
+}
+
+void digitalWrite(uint32_t dwPin, uint32_t dwVal)
+{
+}
+
+typedef void (*voidFuncPtr)(void);
+void attachInterrupt(uint32_t pin, voidFuncPtr callback, uint32_t mode)
+{
+}
+#endif
+
+void LinuxPlatform::cmdLineArgs(int argc, char** argv)
+{
+    if (_args)
+        delete[] _args;
+
+    _args = new char*[argc + 1];
+    memcpy(_args, argv, argc * sizeof(char*));
+    _args[argc] = 0;
+}
diff --git a/src/linux_platform.h b/src/linux_platform.h
index 6fa91d5..722c537 100644
--- a/src/linux_platform.h
+++ b/src/linux_platform.h
@@ -10,9 +10,11 @@ class LinuxPlatform: public Platform
     using Platform::_memoryReference;
     using Platform::memoryReference;
 public:
-    LinuxPlatform(int argc, char** argv);
+    LinuxPlatform();
     virtual ~LinuxPlatform();
 
+    void cmdLineArgs(int argc, char** argv);
+
     std::string flashFilePath();
     void flashFilePath(const std::string path);