diff --git a/cpu/avr/dev/rs232_atmega128rfa1.h b/cpu/avr/dev/rs232_atmega128rfa1.h
new file mode 100644
index 000000000..6fa5362b4
--- /dev/null
+++ b/cpu/avr/dev/rs232_atmega128rfa1.h
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2006, Technical University of Munich
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ * @(#)$$
+ */
+
+/**
+ * \file
+ *         AVR specific definitions for the rs232 port.
+ *
+ * \author
+ *         Simon Barner <barner@in.tum.de
+ */
+
+#ifndef __RS232_ATMEGA128RFA1__
+#define __RS232_ATMEGA128RFA1__
+/******************************************************************************/
+/***   Includes                                                               */
+/******************************************************************************/
+#include <avr/io.h>
+
+/******************************************************************************/
+/***   RS232 ports                                                            */
+/******************************************************************************/
+#define RS232_PORT_0 0
+#define RS232_PORT_1 1
+
+/******************************************************************************/
+/***   Baud rates                                                             */
+/******************************************************************************/
+#if (F_CPU == 16000000UL)
+/* Single speed operation (U2X = 0)*/
+#define USART_BAUD_2400 416
+#define USART_BAUD_4800 207
+#define USART_BAUD_9600 103
+#define USART_BAUD_14400 68
+#define USART_BAUD_19200 51
+#define USART_BAUD_28800 34
+#define USART_BAUD_38400 25
+#define USART_BAUD_57600 16
+#define USART_BAUD_76800 12
+#define USART_BAUD_115200 8
+#define USART_BAUD_230400 3
+#define USART_BAUD_250000 3
+#define USART_BAUD_500000 1
+#define USART_BAUD_1000000 0
+#elif (F_CPU == 8000000UL)
+/* Single speed operation (U2X = 0)*/
+#define USART_BAUD_2400 207
+#define USART_BAUD_4800 103
+#define USART_BAUD_9600 51
+#define USART_BAUD_14400 34
+#define USART_BAUD_19200 25
+#define USART_BAUD_28800 16
+#define USART_BAUD_38400 12
+#define USART_BAUD_57600 8
+#define USART_BAUD_76800 6
+#define USART_BAUD_115200 3
+#define USART_BAUD_230400 1
+#define USART_BAUD_250000 1
+#define USART_BAUD_500000 0
+#else
+#error "Please define the baud rates for your CPU clock (see ATmega128RFA1 datasheet) \
+or set the rate in contiki-conf.h"
+#endif
+
+
+/******************************************************************************/
+/***   Interrupt settings                                                     */
+/******************************************************************************/
+#define USART_INTERRUPT_RX_COMPLETE _BV (RXCIE0)
+#define USART_INTERRUPT_TX_COMPLETE _BV (TXCIE0)
+#define USART_INTERRUPT_DATA_REG_EMPTY _BV (UDRIE0)
+
+/******************************************************************************/
+/***   Receiver / transmitter                                                 */
+/******************************************************************************/
+#define USART_RECEIVER_ENABLE _BV (RXEN0)
+#define USART_TRANSMITTER_ENABLE _BV (TXEN0)
+
+/******************************************************************************/
+/***   Mode select                                                            */
+/******************************************************************************/
+#define USART_MODE_ASYNC 0x00
+#define USART_MODE_SYNC _BV (UMSEL00)
+
+/******************************************************************************/
+/***   Parity                                                                 */
+/******************************************************************************/
+#define USART_PARITY_NONE 0x00
+#define USART_PARITY_EVEN _BV (UPM01)
+#define USART_PARITY_ODD  _BV (UPM01) | _BV (UPM00)
+
+/******************************************************************************/
+/***   Stop bits                                                              */
+/******************************************************************************/
+#define USART_STOP_BITS_1 0x00
+#define USART_STOP_BITS_2 _BV (USBS)
+
+/******************************************************************************/
+/***   Character size                                                         */
+/******************************************************************************/
+#define USART_DATA_BITS_5 0x00
+#define USART_DATA_BITS_6 _BV (UCSZ00)
+#define USART_DATA_BITS_7 _BV (UCSZ01)
+#define USART_DATA_BITS_8 _BV (UCSZ01) | _BV (UCSZ00)
+// #define USART_DATA_BITS_9 (needs also UCSZ2 bit in UCSRnB)
+
+/******************************************************************************/
+/***   Clock polarity                                                         */
+/******************************************************************************/
+#define USART_RISING_XCKN_EDGE 0x00
+#define USART_FALLING_XCKN_EDGE _BV (UCPOL0)
+
+#endif /* #ifndef __RS232_ATMEGA128RFA1__ */