--- /dev/null
+This directory contains "TKN15.4", a platform-independent IEEE 802.15.4-2006
+MAC implementation. The code is still under active development, but most of the
+functionality described in the standard is implemented. The MAC itself is
+platform-independent, but it requires (1) a suitable radio driver, (2)
+Alarms/Timers with symbol precision and (3) some "platform glue" code (defining
+guard times, etc.). Currently the only supported platform is TelosB (however:
+without additional hardware support the timing is not standard compliant).
+
+Status 6/16/08
+--------------
+
+missing functionality:
+
+- security (not planned)
+- GTS (not planned)
+- non-beacon-enabled mode
+- PAN ID conflict resolution
+- multiple indirect transmissions to the same destination
+- documentation
+
+Implementation
+--------------
+
+MAC implementation: tinyos-2.x/tos/lib/mac/tkn154
+MAC interfaces: tinyos-2.x/tos/lib/mac/tkn154/interfaces
+CC2420 driver: tinyos-2.x/tos/chips/cc2420_tkn154
+TelosB "platform glue" code: tinyos-2.x/tos/platforms/telosb/mac/tkn154
+Example applications: tinyos-2.x/apps/tests/tkn154
+
+Copyright
+---------
+
+This work was supported by the the European Commision within the 6th Framework
+Project 2005-IST-5-033406-STP (ANGEL project)
+
+Author: Jan-Hinrich Hauer <hauer@tkn.tu-berlin.de>
+
+/*
+ * Copyright (c) 2008, Technische Universitaet Berlin
+ * 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 Technische Universitaet Berlin 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 COPYRIGHT
+ * OWNER 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.
+ */
+