Merge TinyOS 2.1.1 into master.

[tinyos-2.x.git] / tos / platforms / shimmer / UserButtonP.nc

diff --git a/tos/platforms/shimmer/UserButtonP.nc b/tos/platforms/shimmer/UserButtonP.nc
new file mode 100644 (file)
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+++ b/tos/platforms/shimmer/UserButtonP.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
+ */
+
+/**
+ * Implementation of the user button for the telosb platform
+ *
+ * @author Gilman Tolle <gtolle@archrock.com>
+ * @version $Revision$
+ * port to shimmer-style
+ * @author Steve Ayer
+ * @date   February, 2010
+ */
+
+#include <UserButton.h>
+
+module UserButtonP {
+  provides interface Notify<button_state_t>;
+
+  uses interface Notify<bool> as NotifyLower;
+  uses interface Timer<TMilli> as debounceTimer;
+}
+implementation {
+  command error_t Notify.enable() {
+    return call NotifyLower.enable();
+  }
+
+  command error_t Notify.disable() {
+    return call NotifyLower.disable();
+  }
+
+  event void debounceTimer.fired() {
+    call Notify.enable();    // re-enable interrupt
+    signal Notify.notify( BUTTON_PRESSED );
+  }
+
+  task void debounce() {
+    call debounceTimer.startOneShot(125);
+  }
+
+  event void NotifyLower.notify( bool val ) {
+    // we've only enabled interrupt from rising edge
+    post debounce();
+  }
+  
+  default event void Notify.notify( button_state_t val ) { }
+}