eeprom.c

00001 /*
00002  * Copyright (c) 2004, Swedish Institute of Computer Science.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the Institute nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  *
00029  * This file is part of the Contiki operating system.
00030  *
00031  * Author: Adam Dunkels <adam@sics.se>
00032  *
00033  * $Id: eeprom.c,v 1.2 2007/11/17 18:09:18 adamdunkels Exp $
00034  */
00035 #include "dev/eeprom.h"
00036 #include "node.h"
00037 #include <stdio.h>
00038 
00039 #include <fcntl.h>
00040 #include <unistd.h>
00041 #include <stdio.h>
00042 #include <string.h>
00043 
00044 static unsigned char eeprom[65536];
00045 
00046 void
00047 eeprom_write(eeprom_addr_t addr, unsigned char *buf, int size)
00048 {
00049   int f;
00050   char name[400];
00051 
00052   sprintf(name, "eeprom.%d.%d", node_x(), node_y());
00053   f = open(name, O_WRONLY | O_APPEND | O_CREAT, 0644);
00054   lseek(f, addr, SEEK_SET);
00055   write(f, buf, size);
00056   close(f);
00057   
00058   printf("eeprom_write(addr 0x%02x, buf %p, size %d);\n", addr, buf, size);
00059   
00060   memcpy(&eeprom[addr], buf, size);
00061 }
00062 void
00063 eeprom_read(eeprom_addr_t addr, unsigned char *buf, int size)
00064 {
00065   /*  printf("eeprom_read(addr 0x%02x, buf %p, size %d);\n", addr, buf, size);*/
00066   memcpy(buf, &eeprom[addr], size);
00067 }

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