Contiki-NG
eeprom.c
1 /*
2  * Copyright (c) 2014, Swedish Institute of Computer Science.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  */
30 
31 #include <string.h>
32 #include "dev/eeprom.h"
33 
34 #include "lib/simEnvChange.h"
35 
36 const struct simInterface eeprom_interface;
37 
38 #define EEPROM_BUF_SIZE 1024 /* Configure EEPROM size here and in ContikiEeprom.java */
39 
40 unsigned char simEEPROMData[EEPROM_BUF_SIZE];
41 char simEEPROMChanged = 0;
42 int simEEPROMRead = 0;
43 int simEEPROMWritten = 0;
44 
45 void
47 {
48 }
49 
50 void
51 eeprom_read(eeprom_addr_t addr, unsigned char *buf, int len)
52 {
53  if (addr >= EEPROM_BUF_SIZE) {
54  return;
55  }
56 
57  if(addr + len >= EEPROM_BUF_SIZE) {
58  len = EEPROM_BUF_SIZE - addr;
59  }
60 
61  memcpy(buf, &simEEPROMData[addr], len);
62 
63  simEEPROMChanged = 1;
64  simEEPROMRead += len;
65 }
66 
67 void
68 eeprom_write(eeprom_addr_t addr, unsigned char *buf, int len)
69 {
70  if (addr >= EEPROM_BUF_SIZE) {
71  return;
72  }
73 
74  if(addr + len >= EEPROM_BUF_SIZE) {
75  len = EEPROM_BUF_SIZE - addr;
76  }
77 
78 
79  memcpy(&simEEPROMData[addr], buf, len);
80 
81  simEEPROMChanged = 1;
82  simEEPROMWritten += len;
83 
84 }
85 
86 /*-----------------------------------------------------------------------------------*/
87 static void
88 doInterfaceActionsBeforeTick(void)
89 {
90 }
91 /*-----------------------------------------------------------------------------------*/
92 static void
93 doInterfaceActionsAfterTick(void)
94 {
95 }
96 /*-----------------------------------------------------------------------------------*/
97 
98 SIM_INTERFACE(eeprom_interface,
99  doInterfaceActionsBeforeTick,
100  doInterfaceActionsAfterTick);
static uip_ds6_addr_t * addr
Pointer to a nbr cache entry.
Definition: uip-nd6.c:107
EEPROM functions.
void eeprom_init(void)
Initialize the EEPROM module.
Definition: eeprom.c:72
void eeprom_read(eeprom_addr_t addr, unsigned char *buf, int size)
Read data from the EEPROM.
Definition: eeprom.c:146
void eeprom_write(eeprom_addr_t addr, unsigned char *buf, int size)
Write a buffer into EEPROM.
Definition: eeprom.c:121