diff --git a/core/dev/ds2411.c b/core/dev/ds2411.c
index e4f938cb9..c93c465ed 100644
--- a/core/dev/ds2411.c
+++ b/core/dev/ds2411.c
@@ -50,9 +50,12 @@
 
 #include <string.h>
 
-#include <io.h>
-
 #include "contiki.h"
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
+#include <io.h>
+#endif
 
 #include "dev/ds2411.h"
 
diff --git a/cpu/msp430/Makefile.msp430 b/cpu/msp430/Makefile.msp430
index 796a8fd31..186a82565 100644
--- a/cpu/msp430/Makefile.msp430
+++ b/cpu/msp430/Makefile.msp430
@@ -41,8 +41,12 @@ IAR_PATH_C = $(shell dirname "$(IAR_BIN_PATH)")
 IAR_PATH = $(shell cygpath -m "$(IAR_PATH_C)")
 endif
 
+#defaults on the MSP430X core include file here (xlfn.h)
+ifndef CFLAGSNO
 CFLAGSNO = --dlib_config "$(IAR_PATH)/LIB/DLIB/dl430xlfn.h" $(CFLAGSWERROR)
 # CFLAGSNO = --dlib_config $(IAR_PATH)/LIB/DLIB/dl430xlfn.h -Ohz --multiplier=32 --multiplier_location=4C0 --hw_workaround=CPU40 --core=430X $(CFLAGSWERROR) --data_model large --double=32
+endif
+
 CUSTOM_RULE_C_TO_O = 1
 %.o: %.c
 	$(CC) $(CFLAGS) $< -o $@
diff --git a/cpu/msp430/cc2420-arch.c b/cpu/msp430/cc2420-arch.c
index 124895571..dc1f67b81 100644
--- a/cpu/msp430/cc2420-arch.c
+++ b/cpu/msp430/cc2420-arch.c
@@ -29,10 +29,15 @@
  * @(#)$Id: cc2420-arch.c,v 1.10 2010/12/16 22:49:33 adamdunkels Exp $
  */
 
+#include "contiki.h"
+
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
 #include <io.h>
 #include <signal.h>
+#endif
 
-#include "contiki.h"
 #include "contiki-net.h"
 
 #include "dev/spi.h"
@@ -51,7 +56,13 @@
 #endif
 
 /*---------------------------------------------------------------------------*/
+#ifdef __IAR_SYSTEMS_ICC__
+#pragma vector=CC2420_IRQ_VECTOR
+__interrupt void
+#else
 interrupt(CC2420_IRQ_VECTOR)
+#endif
+
 cc24240_port1_interrupt(void)
 {
   ENERGEST_ON(ENERGEST_TYPE_IRQ);
diff --git a/cpu/msp430/dev/uart1.c b/cpu/msp430/dev/uart1.c
index 855235ac0..363984eb1 100644
--- a/cpu/msp430/dev/uart1.c
+++ b/cpu/msp430/dev/uart1.c
@@ -34,9 +34,13 @@
  */
 
 #include <stdlib.h>
+#include "contiki.h"
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
 #include <io.h>
 #include <signal.h>
-
+#endif
 #include <stdio.h>
 
 #include "sys/energest.h"
@@ -248,7 +252,12 @@ uart1_init(unsigned long ubr)
 
 /*---------------------------------------------------------------------------*/
 #if !RX_WITH_DMA
+#ifdef __IAR_SYSTEMS_ICC__
+#pragma vector=UART1RX_VECTOR
+__interrupt void
+#else
 interrupt(UART1RX_VECTOR)
+#endif
 uart1_rx_interrupt(void)
 {
   uint8_t c;
diff --git a/cpu/msp430/msp430.c b/cpu/msp430/msp430.c
index 785710394..7ea736bd6 100644
--- a/cpu/msp430/msp430.c
+++ b/cpu/msp430/msp430.c
@@ -31,9 +31,14 @@
  * @(#)$Id: msp430.c,v 1.15 2011/01/05 13:36:38 joxe Exp $
  */
 #include "contiki.h"
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
 #include <io.h>
 #include <signal.h>
 #include <sys/unistd.h>
+#define asmv(arg) __asm__ __volatile__(arg)
+#endif
 #include "dev/watchdog.h"
 #include "net/uip.h"
 
@@ -182,8 +187,10 @@ init_ports(void)
 }
 /*---------------------------------------------------------------------------*/
 /* msp430-ld may align _end incorrectly. Workaround in cpu_init. */
+#if defined(__MSP430__) && defined(__GNUC__)
 extern int _end;		/* Not in sys/unistd.h */
 static char *cur_break = (char *)&_end;
+#endif
 
 /*---------------------------------------------------------------------------*/
 /* add/remove_lpm_req - for requiring a specific LPM mode. currently Contiki */
@@ -215,14 +222,17 @@ msp430_cpu_init(void)
   init_ports();
   msp430_init_dco();
   eint();
+#if defined(__MSP430__) && defined(__GNUC__)
   if((uintptr_t)cur_break & 1) { /* Workaround for msp430-ld bug! */
     cur_break++;
   }
+#endif
+
   msp430_dco_required = 0;
 }
 /*---------------------------------------------------------------------------*/
-#define asmv(arg) __asm__ __volatile__(arg)
 
+#
 #define STACK_EXTRA 32
 
 /*
@@ -231,6 +241,7 @@ msp430_cpu_init(void)
  * be used to check if cur_break and the stack pointer meet during
  * runtime.
  */
+#if defined(__MSP430__) && defined(__GNUC__)
 void *
 sbrk(int incr)
 {
@@ -249,6 +260,7 @@ sbrk(int incr)
   */
   return old_break;
 }
+#endif
 /*---------------------------------------------------------------------------*/
 /*
  * Mask all interrupts that can be masked.
@@ -256,10 +268,15 @@ sbrk(int incr)
 int
 splhigh_(void)
 {
-  /* Clear the GIE (General Interrupt Enable) flag. */
   int sr;
+  /* Clear the GIE (General Interrupt Enable) flag. */
+#ifdef __IAR_SYSTEMS_ICC__
+  sr = __get_SR_register();
+  __bic_SR_register(GIE);
+#else
   asmv("mov r2, %0" : "=r" (sr));
   asmv("bic %0, r2" : : "i" (GIE));
+#endif
   return sr & GIE;		/* Ignore other sr bits. */
 }
 /*---------------------------------------------------------------------------*/
@@ -269,8 +286,12 @@ splhigh_(void)
 void
 splx_(int sr)
 {
+#ifdef __IAR_SYSTEMS_ICC__
+  __bis_SR_register(sr);
+#else
   /* If GIE was set, restore it. */
   asmv("bis %0, r2" : : "r" (sr));
+#endif
 }
 /*---------------------------------------------------------------------------*/
 /* this code will always start the TimerB if not already started */
diff --git a/cpu/msp430/slip_uart1.c b/cpu/msp430/slip_uart1.c
index cbce71584..1a1ec519b 100644
--- a/cpu/msp430/slip_uart1.c
+++ b/cpu/msp430/slip_uart1.c
@@ -33,11 +33,13 @@
  * Machine dependent MSP430 SLIP routines for UART1.
  */
 
+#include "contiki.h"
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
 #include <io.h>
 #include <signal.h>
-
-#include "contiki.h"
-
+#endif
 #include "dev/slip.h"
 #include "dev/uart1.h"
 /*---------------------------------------------------------------------------*/
diff --git a/cpu/msp430/spi.c b/cpu/msp430/spi.c
index 7705f5164..0e59a6993 100644
--- a/cpu/msp430/spi.c
+++ b/cpu/msp430/spi.c
@@ -29,10 +29,15 @@
  * @(#)$Id: spi.c,v 1.1 2006/06/17 22:41:21 adamdunkels Exp $
  */
 
-#include <io.h>
-
 #include "contiki-conf.h"
 
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
+#include <io.h>
+#endif
+
+
 /*
  * On the Tmote sky access to I2C/SPI/UART0 must always be
  * exclusive. Set spi_busy so that interrupt handlers can check if
diff --git a/platform/sky/Makefile.common b/platform/sky/Makefile.common
index ee46cf188..ebfbea6e9 100644
--- a/platform/sky/Makefile.common
+++ b/platform/sky/Makefile.common
@@ -14,7 +14,19 @@ ifdef UIP_CONF_IPV6
 CFLAGS += -DWITH_UIP6=1
 endif
 
-CONTIKI_TARGET_SOURCEFILES += $(ARCH) $(UIPDRIVERS) $(CONTIKI_TARGET_MAIN)
+ifdef GCC
+CFLAGS+=-Os -g
+endif
+
+ifdef IAR
+CFLAGS+=-e --vla -Ohz --multiplier=16s --core=430 --double=32
+CFLAGSNO = --dlib_config "$(IAR_PATH)/LIB/DLIB/dl430fn.h" $(CFLAGSWERROR)
+
+endif
+
+
+CONTIKI_TARGET_SOURCEFILES += $(ARCH) $(UIPDRIVERS) #$(CONTIKI_TARGET_MAIN)
+CONTIKI_TARGET_SOURCEFILES += contiki-sky-platform.c
 
 MCU=msp430x1611
 include $(CONTIKI)/cpu/msp430/Makefile.msp430
@@ -23,6 +35,14 @@ contiki-$(TARGET).a: ${addprefix $(OBJECTDIR)/,symbols.o}
 #	$(AR) rcf $@ $^
 
 
+ifdef IAR
+ifdef ELF
+LDFLAGS += -B -xm "$(IAR_PATH)/lib/dlib/dl430fn.r43" -f "$(IAR_PATH)/config/lnk430f1611.xcl" -l contiki-$(TARGET).map -Felf -yn -s __program_start -D_STACK_SIZE=80 -D_DATA16_HEAP_SIZE=80 -D_DATA20_HEAP_SIZE=80
+else
+LDFLAGS += -B -xm "$(IAR_PATH)/lib/dlib/dl430fn.r43" -f "$(IAR_PATH)/config/lnk430f1611.xcl" -l contiki-$(TARGET).map -Fintel-extended -s __program_start -D_STACK_SIZE=80 -D_DATA16_HEAP_SIZE=80 -D_DATA20_HEAP_SIZE=80
+endif
+endif
+
 NUMPAR=20
 IHEXFILE=tmpimage.ihex
 
diff --git a/platform/sky/checkpoint-arch.c b/platform/sky/checkpoint-arch.c
index c958c4a2a..dc6ef445d 100644
--- a/platform/sky/checkpoint-arch.c
+++ b/platform/sky/checkpoint-arch.c
@@ -56,8 +56,12 @@
 #include "cfs/cfs.h"
 #include "cfs/cfs-coffee.h"
 
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
 #include <io.h>
 #include <signal.h>
+#endif
 #include <stdio.h>
 
 #define DEBUG 0
diff --git a/platform/sky/contiki-sky-main.c b/platform/sky/contiki-sky-main.c
index 15b3db66f..f4a5ceab3 100644
--- a/platform/sky/contiki-sky-main.c
+++ b/platform/sky/contiki-sky-main.c
@@ -31,11 +31,14 @@
 
 #include <stdio.h>
 #include <string.h>
+#include "contiki.h"
 
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
 #include <io.h>
 #include <signal.h>
-
-#include "contiki.h"
+#endif
 
 #include "dev/cc2420.h"
 #include "dev/ds2411.h"
diff --git a/platform/sky/dev/battery-sensor.c b/platform/sky/dev/battery-sensor.c
index c3b82ae3d..f2662e5ef 100644
--- a/platform/sky/dev/battery-sensor.c
+++ b/platform/sky/dev/battery-sensor.c
@@ -36,9 +36,14 @@
  *           $Revision: 1.11 $
  */
 
+#include "contiki.h"
 #include "dev/battery-sensor.h"
 #include "dev/sky-sensors.h"
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
 #include <io.h>
+#endif
 
 /* Configure ADC12_2 to sample channel 11 (voltage) and use */
 /* the Vref+ as reference (SREF_1) since it is a stable reference */
diff --git a/platform/sky/dev/button-sensor.c b/platform/sky/dev/button-sensor.c
index a633f9063..57e974980 100644
--- a/platform/sky/dev/button-sensor.c
+++ b/platform/sky/dev/button-sensor.c
@@ -33,7 +33,12 @@
 #include "lib/sensors.h"
 #include "dev/hwconf.h"
 #include "dev/button-sensor.h"
+
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
 #include <signal.h>
+#endif
 
 const struct sensors_sensor button_sensor;
 
@@ -44,7 +49,12 @@ HWCONF_PIN(BUTTON, 2, 7);
 HWCONF_IRQ(BUTTON, 2, 7);
 
 /*---------------------------------------------------------------------------*/
+#ifdef __IAR_SYSTEMS_ICC__
+#pragma vector=PORT2_VECTOR
+__interrupt void
+#else
 interrupt(PORT2_VECTOR)
+#endif
      irq_p2(void)
 {
   ENERGEST_ON(ENERGEST_TYPE_IRQ);
diff --git a/platform/sky/dev/i2c.c b/platform/sky/dev/i2c.c
index d03c1db6a..da1afbc1d 100644
--- a/platform/sky/dev/i2c.c
+++ b/platform/sky/dev/i2c.c
@@ -41,10 +41,14 @@
  */
 
 #include <stdio.h>
-
-#include <io.h>
-
 #include <contiki.h>
+
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
+#include <io.h>
+#endif
+
 #include <dev/spi.h>
 #include <dev/leds.h>
 
diff --git a/platform/sky/dev/light-sensor.c b/platform/sky/dev/light-sensor.c
index 9ca72d432..493076f54 100644
--- a/platform/sky/dev/light-sensor.c
+++ b/platform/sky/dev/light-sensor.c
@@ -36,7 +36,11 @@
 #include "dev/sky-sensors.h"
 #include "dev/light-sensor.h"
 
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
 #include <io.h>
+#endif
 
 /* Photodiode 1 (P64) on INCH_4 */
 /* Photodiode 2 (P65) on INCH_5 */
diff --git a/platform/sky/dev/sky-sensors.c b/platform/sky/dev/sky-sensors.c
index cdd35d264..97d8ced26 100644
--- a/platform/sky/dev/sky-sensors.c
+++ b/platform/sky/dev/sky-sensors.c
@@ -38,8 +38,13 @@
  *           $Revision: 1.3 $
  */
 #include "contiki.h"
-#include "lib/sensors.h"
+
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
 #include <io.h>
+#endif
+#include "lib/sensors.h"
 
 #define ADC12MCTL_NO(adcno) ((unsigned char *) ADC12MCTL0_)[adcno]
 
diff --git a/platform/sky/dev/xmem.c b/platform/sky/dev/xmem.c
index 46315d3fa..1ce480d1d 100644
--- a/platform/sky/dev/xmem.c
+++ b/platform/sky/dev/xmem.c
@@ -39,13 +39,18 @@
  *         unwritten data will read as zeros (UNIX style).
  */
 
+
+#include "contiki.h"
 #include <stdio.h>
 #include <string.h>
 
+#ifdef __IAR_SYSTEMS_ICC__
+#include <msp430.h>
+#else
 #include <io.h>
 #include <signal.h>
+#endif
 
-#include "contiki.h"
 
 #include "dev/spi.h"
 #include "dev/xmem.h"
diff --git a/platform/sky/platform-conf.h b/platform/sky/platform-conf.h
index 5ddb30cb0..b0d50f323 100644
--- a/platform/sky/platform-conf.h
+++ b/platform/sky/platform-conf.h
@@ -50,6 +50,21 @@
 #define PLATFORM_HAS_LEDS   1
 #define PLATFORM_HAS_BUTTON 1
 
+#ifdef __IAR_SYSTEMS_ICC__
+#include <intrinsics.h>
+#include <in430.h>
+#define dint() __disable_interrupt()
+#define eint() __enable_interrupt()
+#define __MSP430F1611__ 1
+#define __MSP430__ 1
+#define CC_CONF_INLINE
+#define BV(x) (1 << x)
+#else
+#define CC_CONF_INLINE inline
+#define MSP430_MEMCPY_WORKAROUND 1
+#endif
+
+
 /* CPU target speed in Hz */
 #define F_CPU 3900000uL /*2457600uL*/
 
@@ -61,10 +76,7 @@
 #define CCIF
 #define CLIF
 
-#define CC_CONF_INLINE inline
-
 #define HAVE_STDINT_H
-#define MSP430_MEMCPY_WORKAROUND 1
 #include "msp430def.h"