65 lines
2.6 KiB
C
65 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2009, University of Colombo School of Computing
|
|
* 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.
|
|
*
|
|
* @(#)$$
|
|
*/
|
|
|
|
#include "contiki-conf.h"
|
|
#include "sys/node-id.h"
|
|
|
|
unsigned short node_id = 0;
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
node_id_restore(void)
|
|
{
|
|
uint16_t newid[2];
|
|
uint8_t volatile sreg;
|
|
|
|
sreg = SREG; /* Save status register before disabling interrupts. */
|
|
cli(); /* Disable interrupts. */
|
|
eeprom_read(EEPROM_NODE_ID_START, (unsigned char *)newid, sizeof(newid));
|
|
node_id = (newid[0] == 0xdead) ? newid[1] : 0;
|
|
SREG = sreg; /* Enable interrupts. */
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
node_id_burn(unsigned short id)
|
|
{
|
|
uint16_t buffer[2] = { 0xdead, id };
|
|
uint8_t volatile sreg;
|
|
|
|
sreg = SREG; /* Save status register before disabling interrupts. */
|
|
cli(); /* Disable interrupts. */
|
|
eeprom_write(EEPROM_NODE_ID_START, (unsigned char *)buffer, sizeof(buffer));
|
|
SREG = sreg; /* Enable interrupts. */
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|