diff --git a/esp-knx-ip-send.cpp b/esp-knx-ip-send.cpp
index e3e74ea..32887ac 100644
--- a/esp-knx-ip-send.cpp
+++ b/esp-knx-ip-send.cpp
@@ -61,7 +61,7 @@ void ESPKNXIP::send(address_t const &receiver, knx_command_type_t ct, uint8_t da
 	}
 	buf[len - 1] = cs;
 #endif
-
+	
 	DEBUG_PRINT(F("Sending packet:"));
 	for (int i = 0; i < len; ++i)
 	{
@@ -70,7 +70,11 @@ void ESPKNXIP::send(address_t const &receiver, knx_command_type_t ct, uint8_t da
 	}
 	DEBUG_PRINTLN(F(""));
 
-	udp.beginPacketMulticast(MULTICAST_IP, MULTICAST_PORT, WiFi.localIP());
+	#ifdef ESP32
+		udp.beginMulticastPacket();
+	#else
+		udp.beginPacketMulticast(MULTICAST_IP, MULTICAST_PORT, WiFi.localIP());
+	#endif
 	udp.write(buf, len);
 	udp.endPacket();
 }
@@ -125,7 +129,11 @@ void ESPKNXIP::send_2byte_float(address_t const &receiver, knx_command_type_t ct
 	++e;
 	for (; v > 2047.0f; v /= 2)
 	++e;
-	long m = (long)round(v) & 0x7FF;
+	#ifdef ESP32
+		long m = pow(round(v), 0x7FF);
+	#else
+		long m = round(v) & 0x7FF;
+	#endif
 	short msb = (short) (e << 3 | m >> 8);
 	if (val < 0.0f)
 	msb |= 0x80;
@@ -177,17 +185,3 @@ void ESPKNXIP::send_4byte_float(address_t const &receiver, knx_command_type_t ct
 	uint8_t buf[] = {0x00, ((uint8_t *)&val)[3], ((uint8_t *)&val)[2], ((uint8_t *)&val)[1], ((uint8_t *)&val)[0]};
 	send(receiver, ct, 5, buf);
 }
-
-void ESPKNXIP::send_14byte_string(address_t const &receiver, knx_command_type_t ct, const char *val)
-{
-	// DPT16 strings are always 14 bytes long, however the data array is one larger due to the telegram structure.
-	// The first byte needs to be zero, string start after that.
-	uint8_t buf[15] = {0x00};
-	int len = strlen(val);
-	if (len > 14)
-	{
-		len = 14;
-	}
-	memcpy(buf+1, val, len);
-	send(receiver, ct, 15, buf);
-}
diff --git a/esp-knx-ip.cpp b/esp-knx-ip.cpp
index 1c118e1..4ef1782 100644
--- a/esp-knx-ip.cpp
+++ b/esp-knx-ip.cpp
@@ -27,15 +27,27 @@ void ESPKNXIP::load()
   restore_from_eeprom();
 }
 
+#ifdef ESP32
+void ESPKNXIP::start(WebServer *srv)
+{
+  server = srv;
+  __start();
+}
+#else 
 void ESPKNXIP::start(ESP8266WebServer *srv)
 {
   server = srv;
   __start();
 }
+#endif
 
 void ESPKNXIP::start()
 {
-  server = new ESP8266WebServer(80);
+    #ifdef ESP32
+        server = new WebServer(80);
+    #else
+        server = new ESP8266WebServer(80);
+    #endif
   __start();
 }
 
@@ -82,7 +94,11 @@ void ESPKNXIP::__start()
     server->begin();
   }
 
-  udp.beginMulticast(WiFi.localIP(),  MULTICAST_IP, MULTICAST_PORT);
+  #ifdef ESP32
+    udp.beginMulticast(MULTICAST_IP, MULTICAST_PORT);
+  #else
+    udp.beginMulticast(WiFi.localIP(),  MULTICAST_IP, MULTICAST_PORT);
+  #endif
 }
 
 void ESPKNXIP::save_to_eeprom()
diff --git a/esp-knx-ip.h b/esp-knx-ip.h
index 147eb69..d8c3e1b 100644
--- a/esp-knx-ip.h
+++ b/esp-knx-ip.h
@@ -47,10 +47,18 @@
  */
 
 #include "Arduino.h"
+
+#ifdef ESP32
+    #include <WiFi.h>
+    #include <WebServer.h>
+#else
+    #include <ESP8266WiFi.h>
+    #include <ESP8266WebServer.h>
+#endif
+
 #include <EEPROM.h>
-#include <ESP8266WiFi.h>
 #include <WiFiUdp.h>
-#include <ESP8266WebServer.h>
+
 
 #include "DPT.h"
 
@@ -362,7 +370,11 @@ class ESPKNXIP {
     ESPKNXIP();
     void load();
     void start();
-    void start(ESP8266WebServer *srv);
+    #ifdef ESP32
+        void start(WebServer *srv);
+    #else
+        void start(ESP8266WebServer *srv);
+    #endif
     void loop();
 
     void save_to_eeprom();
@@ -518,8 +530,13 @@ class ESPKNXIP {
 
     callback_assignment_id_t __callback_register_assignment(address_t address, callback_id_t id);
     void __callback_delete_assignment(callback_assignment_id_t id);
+    
+    #ifdef ESP32
+        WebServer *server;
+    #else
+        ESP8266WebServer *server;
+    #endif
 
-    ESP8266WebServer *server;
     address_t physaddr;
     WiFiUDP udp;