2007-08-20 13:01:13 +02:00
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/*
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* Copyright (c) 2006, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* $Id: node-id.c,v 1.2 2007/08/20 11:01:13 nvt-se Exp $
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*/
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#include "node-id.h"
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#include "contiki-conf.h"
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#include "dev/infomem.h"
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unsigned short node_id = 0;
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/*---------------------------------------------------------------------------*/
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void
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node_id_restore(void)
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{
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unsigned short newid[2];
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infomem_read(newid, INFOMEM_NODE_ID, 2 * sizeof(node_id));
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node_id = ( newid[0] == 0xdead ) ? newid[1] : newid[0];
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}
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/*---------------------------------------------------------------------------*/
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void
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node_id_burn(unsigned short id)
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{
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unsigned short buffer[2] = { 0xdead, id };
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infomem_write(INFOMEM_NODE_ID, 1, buffer, 2 * sizeof(node_id));
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}
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/*---------------------------------------------------------------------------*/
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