diff --git a/CMakeLists.txt b/CMakeLists.txt
index 841e743..af5b0ec 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,7 @@
 cmake_policy(SET CMP0048 NEW)
-project(knx VERSION 1.4)
 cmake_minimum_required(VERSION 3.16)
+project(knx VERSION 1.5)
+
 
 add_subdirectory(examples/knx-linux)
 add_subdirectory(examples/knx-linux-coupler)
diff --git a/examples/knx-linux-coupler/CMakeLists.txt b/examples/knx-linux-coupler/CMakeLists.txt
index 1809326..6b839c6 100644
--- a/examples/knx-linux-coupler/CMakeLists.txt
+++ b/examples/knx-linux-coupler/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.16)
-project(knx-linux-coupler VERSION 1.4)
+project(knx-linux-coupler VERSION 1.5)
 set(LIBRARIES_FROM_REFERENCES "")
 
 set(SOURCES
diff --git a/examples/knx-linux-coupler/fdsk.cpp b/examples/knx-linux-coupler/fdsk.cpp
index bb62d57..c8ca285 100644
--- a/examples/knx-linux-coupler/fdsk.cpp
+++ b/examples/knx-linux-coupler/fdsk.cpp
@@ -62,8 +62,6 @@ int FdskCalculator::toBase32(uint8_t* in, long length, uint8_t*& out, bool usePa
   char standardPaddingChar = '=';
 
   int result = 0;
-  int count = 0;
-  int bufSize = 8;
   int index = 0;
   int size = 0; // size of temporary array
   uint8_t* temp = nullptr;
diff --git a/examples/knx-linux/CMakeLists.txt b/examples/knx-linux/CMakeLists.txt
index ba740df..837b230 100644
--- a/examples/knx-linux/CMakeLists.txt
+++ b/examples/knx-linux/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.16)
-project(knx-linux VERSION 1.4)
+project(knx-linux VERSION 1.5)
 set(LIBRARIES_FROM_REFERENCES "")
 
 set(SOURCES
diff --git a/examples/knx-linux/fdsk.cpp b/examples/knx-linux/fdsk.cpp
index bb62d57..c8ca285 100644
--- a/examples/knx-linux/fdsk.cpp
+++ b/examples/knx-linux/fdsk.cpp
@@ -62,8 +62,6 @@ int FdskCalculator::toBase32(uint8_t* in, long length, uint8_t*& out, bool usePa
   char standardPaddingChar = '=';
 
   int result = 0;
-  int count = 0;
-  int bufSize = 8;
   int index = 0;
   int size = 0; // size of temporary array
   uint8_t* temp = nullptr;
diff --git a/examples/knxPython/CMakeLists.txt b/examples/knxPython/CMakeLists.txt
index 7f795e0..9b3d1e5 100644
--- a/examples/knxPython/CMakeLists.txt
+++ b/examples/knxPython/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.16)
-project(knx VERSION 1.4)
+project(knx VERSION 1.5)
 
 add_subdirectory(pybind11)
 
diff --git a/library.json b/library.json
index 8f76877..29ff45d 100644
--- a/library.json
+++ b/library.json
@@ -1,6 +1,6 @@
 {
     "name": "knx",
-    "version": "1.2.0",
+    "version": "1.5.0",
     "dependencies": {
     },
     "description": "knx stack",
diff --git a/library.properties b/library.properties
index 3e79e42..62a4296 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=knx
-version=1.2.0
+version=1.5.0
 author=Thomas Kunze, et. al.
 maintainer=Thomas Kunze
 sentence=knx stack
diff --git a/src/knx/bau07B0.cpp b/src/knx/bau07B0.cpp
index cfbc1bb..099987a 100644
--- a/src/knx/bau07B0.cpp
+++ b/src/knx/bau07B0.cpp
@@ -9,9 +9,8 @@
 using namespace std;
 
 Bau07B0::Bau07B0(Platform& platform)
-    : BauSystemBDevice(platform),
-      _dlLayer(_deviceObj, _netLayer.getInterface(), _platform, *this, (ITpUartCallBacks&) *this, (DataLinkLayerCallbacks*) this),
-      DataLinkLayerCallbacks()
+    : BauSystemBDevice(platform), DataLinkLayerCallbacks(),
+      _dlLayer(_deviceObj, _netLayer.getInterface(), _platform, *this, (ITpUartCallBacks&) *this, (DataLinkLayerCallbacks*) this)
 #ifdef USE_CEMI_SERVER
     , _cemiServer(*this)
 #endif           
diff --git a/src/knx/bau091A.cpp b/src/knx/bau091A.cpp
index 430f2e6..0fa0e7d 100644
--- a/src/knx/bau091A.cpp
+++ b/src/knx/bau091A.cpp
@@ -14,15 +14,13 @@ implement PID_COUPLER_SERVICES_CONTROL 03_05_01 4.4.7
 */
 
 Bau091A::Bau091A(Platform& platform)
-    : BauSystemBCoupler(platform),
+    : BauSystemBCoupler(platform), DataLinkLayerCallbacks(),
       _routerObj(memory(), 0x200, 0x2000),  // the Filtertable of 0x091A IP Routers is fixed at 0x200 and 0x2000 long
       _ipParameters(_deviceObj, platform),
       _dlLayerPrimary(_deviceObj, _ipParameters, _netLayer.getPrimaryInterface(), _platform, *this, (DataLinkLayerCallbacks*) this),
-      _dlLayerSecondary(_deviceObj, _netLayer.getSecondaryInterface(), platform, *this, (ITpUartCallBacks&) *this, (DataLinkLayerCallbacks*) this),
-      DataLinkLayerCallbacks()
+      _dlLayerSecondary(_deviceObj, _netLayer.getSecondaryInterface(), platform, *this, (ITpUartCallBacks&) *this, (DataLinkLayerCallbacks*) this)
 #ifdef USE_CEMI_SERVER
-      ,
-      _cemiServer(*this)
+      , _cemiServer(*this)
 #endif
 {
     // Before accessing anything of the router object they have to be initialized according to the used medium
diff --git a/src/knx/ip_data_link_layer.cpp b/src/knx/ip_data_link_layer.cpp
index 3fe45b9..ec19e8d 100644
--- a/src/knx/ip_data_link_layer.cpp
+++ b/src/knx/ip_data_link_layer.cpp
@@ -1069,7 +1069,7 @@ bool IpDataLinkLayer::isSendLimitReached()
         uint32_t timeBaseDiff = _frameCountTimeBase - curTime;
         if(timeBaseDiff > 10)
             timeBaseDiff = 10;
-        for(int i = 0; i < timeBaseDiff ; i++)
+        for(uint32_t i = 0; i < timeBaseDiff ; i++)
         {
             _frameCountBase++;
             _frameCountBase = _frameCountBase % 10;
diff --git a/src/knx/tpuart_data_link_layer.cpp b/src/knx/tpuart_data_link_layer.cpp
index e70b58c..57f03ef 100644
--- a/src/knx/tpuart_data_link_layer.cpp
+++ b/src/knx/tpuart_data_link_layer.cpp
@@ -659,7 +659,7 @@ void TpUartDataLinkLayer::requestConfig()
         _platform.writeUart(0x0); // dummy, see NCN5120 datasheet
 #else
         _platform.writeUart(U_MXRSTCNT);
-        _platform.writeUart(((_repetitions & 0xF0) << 1) || (_repetitions & 0x0F));
+        _platform.writeUart(((_repetitions & 0xF0) << 1) | (_repetitions & 0x0F));
 #endif
     }
 }