diff --git a/platform/osd-er-lp24/dev/button-sensor.c b/platform/osd-er-lp24/dev/button-sensor.c
new file mode 100644
index 000000000..d9cab0c1e
--- /dev/null
+++ b/platform/osd-er-lp24/dev/button-sensor.c
@@ -0,0 +1,124 @@
+/*
+* Copyright (c) 2005, Swedish Institute of Computer Science
+* 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.
+*
+* @(#)$Id: button-sensor.c,v 1.4 2010/01/14 20:01:19 nifi Exp $
+*/
+#include "contiki.h"
+#include "lib/sensors.h"
+#include "dev/button-sensor.h"
+//#include "dev/leds.h"
+
+#include <avr/interrupt.h>
+
+//#include "dev/hwconf.h"
+//#include "isr_compat.h"
+
+const struct sensors_sensor button_sensor;
+
+static struct timer debouncetimer;
+static int status(int type);
+
+static int enabled = 0;
+
+//HWCONF_PIN(BUTTON, 2, 7);
+//HWCONF_IRQ(BUTTON, 2, 7);
+
+#define BUTTON_BIT INTF5
+#define BUTTON_CHECK_IRQ() (EIFR & BUTTON_BIT) ? 0 : 1
+
+#define PRINTF(...) printf(__VA_ARGS__)
+/*---------------------------------------------------------------------------*/
+ISR(INT6_vect)
+{
+
+//  leds_toggle(LEDS_YELLOW);
+  
+  if(BUTTON_CHECK_IRQ()) {
+    if(timer_expired(&debouncetimer)) {
+      timer_set(&debouncetimer, CLOCK_SECOND / 4);
+      sensors_changed(&button_sensor);
+
+    }
+  }
+
+}
+/*---------------------------------------------------------------------------*/
+static int value(int type)
+{
+  return (PORTE & _BV(PE5) ? 0 : 1) || !timer_expired(&debouncetimer);
+}
+/*---------------------------------------------------------------------------*/
+static int configure(int type, int c)
+{
+ PRINTF("Sensor Button Configure called: %d, %d\n",type,c);
+
+  switch (type) {
+  case SENSORS_ACTIVE:
+    if (c) {
+      if(!status(SENSORS_ACTIVE)) {
+timer_set(&debouncetimer, 0);
+
+PRINTF("Setup sensor started\n");
+
+DDRE |= (0<<DDE6); // Set pin as input
+PORTE |= (1<<PORTE6); // Set port PORTE bint 5 with pullup resistor
+EICRB |= (2<<ISC60); // For falling edge
+
+//BUTTON_SELECT();
+
+//leds_on(LEDS_RED);
+EIMSK |= (1<<INT6); // Set int
+enabled = 1;
+sei();
+      }
+PRINTF("Sensor EIMSK set\n");
+} else {
+enabled = 0;
+EIMSK &= ~(1<<INT6); // clear int
+//leds_off(LEDS_RED);
+PRINTF("Setup sensor failed\n");
+}
+return 1;
+  }
+  return 0;
+}
+/*---------------------------------------------------------------------------*/
+static int
+status(int type)
+{
+  switch (type) {
+  case SENSORS_ACTIVE:
+  case SENSORS_READY:
+    return enabled;//(EIMSK & (1<<INT5) ? 0 : 1);//BUTTON_IRQ_ENABLED();
+  }
+  return 0;
+}
+/*---------------------------------------------------------------------------*/
+SENSORS_SENSOR(button_sensor, BUTTON_SENSOR, value, configure, status);
\ No newline at end of file