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Node IDs are stored in EEPROM and restored on bootup

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This commit is contained in:
adamdunkels 2006-10-06 07:47:02 +00:00
parent 1f49bd4cd2
commit d239998175
2 changed files with 77 additions and 2 deletions
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72
platform/esb/node-id.c Normal file
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/*
* Copyright (c) 2006, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
*
* This file is part of the Contiki operating system.
*
* $Id: node-id.c,v 1.1 2006/10/06 07:47:02 adamdunkels Exp $
*/
/**
* \file
* A brief description of what this file is.
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "node-id.h"
#include "contiki-conf.h"
#include "dev/eeprom.h"
unsigned short node_id = 0;
/*---------------------------------------------------------------------------*/
void
node_id_restore(void)
{
unsigned char buf[2];
eeprom_read(NODE_ID_EEPROM_OFFSET, buf, 2);
if(buf[0] == 0xad &&
buf[1] == 0xde) {
eeprom_read(NODE_ID_EEPROM_OFFSET + 2, buf, 2);
node_id = (buf[0] << 8) | buf[1];
} else {
node_id = 0;
}
}
/*---------------------------------------------------------------------------*/
void
node_id_burn(unsigned short id)
{
unsigned char buf[2];
buf[0] = 0xad;
buf[1] = 0xde;
eeprom_write(NODE_ID_EEPROM_OFFSET, buf, 2);
buf[0] = id >> 8;
buf[1] = id & 0xff;
eeprom_write(NODE_ID_EEPROM_OFFSET + 2, buf, 2);
}
/*---------------------------------------------------------------------------*/

7
platform/esb/node-id.h
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*
* Author: Adam Dunkels <adam@sics.se>
*
* $Id: node-id.h,v 1.1 2006/06/17 22:41:27 adamdunkels Exp $
* $Id: node-id.h,v 1.2 2006/10/06 07:47:03 adamdunkels Exp $
*/
#ifndef __NODE_ID_H__
#define __NODE_ID_H__
extern const unsigned short node_id;
void node_id_restore(void);
void node_id_burn(unsigned short node_id);
extern unsigned short node_id;
#endif /* __NODE_ID_H__ */