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diff --git a/tos/platforms/olimexp169/SwitchToggleC.nc b/tos/platforms/olimexp169/SwitchToggleC.nc
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+/**
+ * Copyright (c) 2007 Arch Rock Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - 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.
+ * - Neither the name of the Arch Rock Corporation 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 COPYRIGHT HOLDERS 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
+ * ARCHED ROCK OR ITS 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
+ */
+
+/**
+ * Generic layer to translate a GIO into a toggle switch
+ *
+ * @author Gilman Tolle <gtolle@archrock.com>
+ * @version $Revision: 1.1 $
+ */
+
+#include <UserButton.h>
+
+generic module SwitchToggleC() {
+  provides interface Get<bool>;
+  provides interface Notify<bool>;
+
+  uses interface GeneralIO;
+  uses interface GpioInterrupt;
+}
+implementation {
+  norace bool m_pinHigh;
+
+  task void sendEvent();
+
+  command bool Get.get() { return call GeneralIO.get(); }
+
+  command error_t Notify.enable() {
+    call GeneralIO.makeInput();
+
+    if ( call GeneralIO.get() ) {
+      m_pinHigh = TRUE;
+      return call GpioInterrupt.enableFallingEdge();
+    } else {
+      m_pinHigh = FALSE;
+      return call GpioInterrupt.enableRisingEdge();
+    }
+  }
+
+  command error_t Notify.disable() {
+    return call GpioInterrupt.disable();
+  }
+
+  async event void GpioInterrupt.fired() {
+    call GpioInterrupt.disable();
+
+    m_pinHigh = !m_pinHigh;
+
+    post sendEvent();
+  }
+
+  task void sendEvent() {
+    bool pinHigh;
+    pinHigh = m_pinHigh;
+    
+    signal Notify.notify( pinHigh );
+    
+    if ( pinHigh ) {
+      call GpioInterrupt.enableFallingEdge();
+    } else {
+      call GpioInterrupt.enableRisingEdge();
+    }
+  }
+}