diff --git a/MySensors.h b/MySensors.h
index bb596cb..b724b74 100644
--- a/MySensors.h
+++ b/MySensors.h
@@ -240,7 +240,7 @@
 #endif
 
 #if defined(MY_TRANSPORT_DONT_CARE_MODE)
-	#error This directive is deprecated, use MY_TRANSPORT_RELAX instead!
+	#error This directive is deprecated, use MY_TRANSPORT_RELAXED instead!
 #endif
 
 
diff --git a/core/MyLeds.cpp b/core/MyLeds.cpp
index 0da6628..3138be3 100644
--- a/core/MyLeds.cpp
+++ b/core/MyLeds.cpp
@@ -34,16 +34,16 @@ inline void ledsInit()
 	countRx = 0;
 	countTx = 0;
 	countErr = 0;
-
+	
 	// Setup led pins
 	#if defined(MY_DEFAULT_RX_LED_PIN)
-		pinMode(MY_DEFAULT_RX_LED_PIN,  OUTPUT);
+		hwPinMode(MY_DEFAULT_RX_LED_PIN,  OUTPUT);
 	#endif
 	#if defined(MY_DEFAULT_TX_LED_PIN)
-		pinMode(MY_DEFAULT_TX_LED_PIN,  OUTPUT);
+		hwPinMode(MY_DEFAULT_TX_LED_PIN,  OUTPUT);
 	#endif
 	#if defined(MY_DEFAULT_ERR_LED_PIN)
-		pinMode(MY_DEFAULT_ERR_LED_PIN, OUTPUT);
+		hwPinMode(MY_DEFAULT_ERR_LED_PIN, OUTPUT);
 	#endif
 	prevTime = hwMillis() - LED_PROCESS_INTERVAL_MS;     // Substract some, to make sure leds gets updated on first run.
 	ledsProcess();
diff --git a/core/MySensorsCore.cpp b/core/MySensorsCore.cpp
index 7a5e20a..2d2fb40 100644
--- a/core/MySensorsCore.cpp
+++ b/core/MySensorsCore.cpp
@@ -35,11 +35,8 @@ static coreConfig_t _coreConfig;
 	char _convBuf[MAX_PAYLOAD*2+1];
 #endif
 
-// Callback for requested time messages
-void (*_timeCallback)(unsigned long);
-
 // Callback for transport=ok transition
-void _callbackTransportOk()
+void _callbackTransportOk(void)
 {
 	if (!_coreConfig.presentationSent) {
 		presentNode();
@@ -123,7 +120,7 @@ void _begin(void) {
 		transportRegisterOkCallback(_callbackTransportOk);
 		// Initialise transport layer
 		transportInitialise();
-		
+		// wait until transport is ready
 		#if !defined(MY_TRANSPORT_RELAXED)
 			// check if transport ready
 			while (!isTransportReady()) {
@@ -176,7 +173,7 @@ void _registerNode(void)
 		(void)_sendRoute(build(_msgTmp, GATEWAY_ADDRESS, NODE_SENSOR_ID, C_INTERNAL, I_REGISTRATION_REQUEST).set(MY_CORE_VERSION));
 	} while (!wait(2000, C_INTERNAL, I_REGISTRATION_RESPONSE) && counter--);
 #else
-	_coreConfig.registered = true;
+	_coreConfig.nodeRegistered = true;
 	CORE_DEBUG(PSTR("MCO:REG:NOT NEEDED\n"));
 #endif
 }
diff --git a/core/MySensorsCore.h b/core/MySensorsCore.h
index 0d0ab60..cf5c9f4 100644
--- a/core/MySensorsCore.h
+++ b/core/MySensorsCore.h
@@ -105,12 +105,11 @@ typedef struct {
 
 /**
 * @brief Node core configuration
-*
 */
 typedef struct {
 	controllerConfig_t controllerConfig;	//!< Controller config
 	// 8 bit
-	bool nodeRegistered : 1;					//!< Flag node registered
+	bool nodeRegistered : 1;				//!< Flag node registered
 	bool presentationSent : 1;				//!< Flag presentation sent
 	uint8_t reserved : 6;					//!< reserved
 } coreConfig_t;
diff --git a/core/MyTransport.h b/core/MyTransport.h
index 3553756..f835f42 100644
--- a/core/MyTransport.h
+++ b/core/MyTransport.h
@@ -227,8 +227,8 @@ typedef struct {
  * This structure stores SM state definitions
  */
 typedef struct {
-	void(*Transition)();					//!< state transition function
-	void(*Update)();						//!< state update function
+	void(*Transition)(void);					//!< state transition function
+	void(*Update)(void);						//!< state update function
 } transportState_t;
 
 /**