node-id.c

/*
 * Copyright (c) 2012, STMicroelectronics.
 * 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.
 *
 *
 */
/*---------------------------------------------------------------------------*/
#include "node-id.h"
#include "contiki-conf.h"
#include <string.h>
/*---------------------------------------------------------------------------*/
unsigned short node_id = 0;
unsigned char node_mac[8];
volatile uint32_t device_id[3];
/*---------------------------------------------------------------------------*/
#define DEVICE_ID_REG0  (*((volatile uint32_t *)0x1FF80050))
#define DEVICE_ID_REG1  (*((volatile uint32_t *)0x1FF80054))
#define DEVICE_ID_REG2  (*((volatile uint32_t *)0x1FF80064))
/*---------------------------------------------------------------------------*/
void
node_id_restore(void)
{
  device_id[0] = DEVICE_ID_REG0;
  device_id[1] = DEVICE_ID_REG1;
  device_id[2] = DEVICE_ID_REG2;

  (*(uint32_t *)node_mac) = DEVICE_ID_REG1;
  (*(((uint32_t *)node_mac) + 1)) = DEVICE_ID_REG2 + DEVICE_ID_REG0;
  node_id = (unsigned short)DEVICE_ID_REG2;
}
/*---------------------------------------------------------------------------*/