Merge TinyOS 2.1.1 into master.

[tinyos-2.x.git] / tos / chips / rf2xx / layers / MetadataFlagsLayerC.nc

diff --git a/tos/chips/rf2xx/layers/MetadataFlagsLayerC.nc b/tos/chips/rf2xx/layers/MetadataFlagsLayerC.nc
new file mode 100644 (file)
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+++ b/tos/chips/rf2xx/layers/MetadataFlagsLayerC.nc
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+/*
+ * Copyright (c) 2007, Vanderbilt University
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written agreement is
+ * hereby granted, provided that the above copyright notice, the following
+ * two paragraphs and the author appear in all copies of this software.
+ * 
+ * IN NO EVENT SHALL THE VANDERBILT UNIVERSITY BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
+ * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE VANDERBILT
+ * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * THE VANDERBILT UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE VANDERBILT UNIVERSITY HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Author: Miklos Maroti
+ */
+
+#include <MetadataFlagsLayer.h>
+#include <RadioAssert.h>
+
+module MetadataFlagsLayerC
+{
+       provides 
+       {
+               interface PacketFlag[uint8_t bit];
+               interface RadioPacket;
+       }
+
+       uses
+       {
+               interface RadioPacket as SubPacket;
+       }
+}
+
+implementation
+{
+       flags_metadata_t* getMeta(message_t* msg)
+       {
+               return ((void*)msg) + sizeof(message_t) - call RadioPacket.metadataLength(msg);
+       }
+
+/*----------------- RadioPacket -----------------*/
+
+       async command bool PacketFlag.get[uint8_t bit](message_t* msg)
+       {
+               return getMeta(msg)->flags & (1<<bit);
+       }
+
+       async command void PacketFlag.set[uint8_t bit](message_t* msg)
+       {
+               ASSERT( bit  < 8 );
+
+               getMeta(msg)->flags |= (1<<bit);
+       }
+
+       async command void PacketFlag.clear[uint8_t bit](message_t* msg)
+       {
+               ASSERT( bit  < 8 );
+
+               getMeta(msg)->flags &= ~(1<<bit);
+       }
+
+       async command void PacketFlag.setValue[uint8_t bit](message_t* msg, bool value)
+       {
+               if( value )
+                       call PacketFlag.set[bit](msg);
+               else
+                       call PacketFlag.clear[bit](msg);
+       }
+
+/*----------------- RadioPacket -----------------*/
+       
+       async command uint8_t RadioPacket.headerLength(message_t* msg)
+       {
+               return call SubPacket.headerLength(msg);
+       }
+
+       async command uint8_t RadioPacket.payloadLength(message_t* msg)
+       {
+               return call SubPacket.payloadLength(msg);
+       }
+
+       async command void RadioPacket.setPayloadLength(message_t* msg, uint8_t length)
+       {
+               call SubPacket.setPayloadLength(msg, length);
+       }
+
+       async command uint8_t RadioPacket.maxPayloadLength()
+       {
+               return call SubPacket.maxPayloadLength();
+       }
+
+       async command uint8_t RadioPacket.metadataLength(message_t* msg)
+       {
+               return call SubPacket.metadataLength(msg) + sizeof(flags_metadata_t);
+       }
+
+       async command void RadioPacket.clear(message_t* msg)
+       {
+               getMeta(msg)->flags = 0;
+               call SubPacket.clear(msg);
+       }
+}