osd-contiki/platform/avr-rss2/params.c

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/*
* Copyright (c) 2011, 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.
*
*/
#define PRINTF(FORMAT, args ...) printf_P(PSTR(FORMAT),##args)
#define DEBUG 1
#if DEBUG
#define PRINTD(FORMAT, args ...) printf_P(PSTR(FORMAT),##args)
#else
#define PRINTD(...)
#endif
#include "contiki.h"
#include <avr/pgmspace.h>
#include <avr/eeprom.h>
#include <stdio.h>
#include <string.h>
#if AVR_WEBSERVER
/* #include "httpd-fs.h" */
/* #include "httpd-cgi.h" */
#endif
#include "contiki-net.h"
#include "params.h"
#if CONTIKI_CONF_RANDOM_MAC
extern uint8_t rng_get_uint8(void);
static void
generate_new_eui64(uint8_t eui64[8])
{
eui64[0] = 0x02;
eui64[1] = rng_get_uint8();
eui64[2] = rng_get_uint8();
eui64[3] = 0xFF;
eui64[4] = 0xFE;
eui64[5] = rng_get_uint8();
eui64[6] = rng_get_uint8();
eui64[7] = rng_get_uint8();
}
#endif
#if AVR_WEBSERVER
/* Webserver builds can set these in httpd-fsdata.c via makefsdata.h */
extern uint8_t default_mac_address[8];
extern uint8_t default_server_name[16];
extern uint8_t default_domain_name[30];
#else
const uint8_t default_mac_address[8] PROGMEM = PARAMS_EUI64ADDR;
const uint8_t default_server_name[] PROGMEM = PARAMS_SERVERNAME;
const uint8_t default_domain_name[] PROGMEM = PARAMS_DOMAINNAME;
#endif
#if PARAMETER_STORAGE == 0
/* 0 Hard coded, minmal program and eeprom usage. */
uint8_t
params_get_eui64(uint8_t *eui64)
{
#if CONTIKI_CONF_RANDOM_MAC
PRINTD("Generating random EUI64 MAC\n");
generate_new_eui64(eui64);
return 1;
#else
uint8_t i;
for(i = 0; i < sizeof(default_mac_address); i++) {
eui64[i] = pgm_read_byte_near(default_mac_address + i);
}
return 0;
#endif
}
#elif PARAMETER_STORAGE == 1
/* 1 Stored in fixed eeprom locations, rewritten from flash if corrupt.
* They can be manually changed and kept over program reflash.
* The channel and bit complement are used to check EEMEM integrity,
* If corrupt all values will be rewritten with the default flash values.
* To make this work, get the channel before anything else.
*/
#if !AVR_WEBSERVER
uint8_t eemem_mac_address[] EEMEM = PARAMS_EUI64ADDR;
uint8_t eemem_server_name[] EEMEM = PARAMS_SERVERNAME;
uint8_t eemem_domain_name[] EEMEM = PARAMS_DOMAINNAME;
#endif /*AVR_WEBSERVER */
uint16_t eemem_nodeid EEMEM = PARAMS_NODEID;
uint8_t eemem_channel[2] EEMEM = { PARAMS_CHANNEL, ~PARAMS_CHANNEL };
uint16_t eemem_panid EEMEM = PARAMS_PANID;
uint16_t eemem_panaddr EEMEM = PARAMS_PANADDR;
uint8_t eemem_txpower EEMEM = PARAMS_TXPOWER;
#if CONTIKI_CONF_RANDOM_MAC
static uint8_t randomeui64;
#endif
uint8_t
params_get_channel(void)
{
uint8_t x[2];
*(uint16_t *)x = eeprom_read_word((uint16_t *)&eemem_channel);
/* Don't return an invalid channel number */
if((x[0] < 11) || (x[0] > 26)) {
x[1] = x[0];
}
/* Do exclusive or test on the two values read */
if((uint8_t)x[0] != (uint8_t) ~x[1]) { /* ~x[1] can promote comparison to 16 bit */
/* Verification fails, rewrite everything */
uint8_t i, buffer[32];
PRINTD("EEPROM is corrupt, rewriting with defaults.\n");
#if CONTIKI_CONF_RANDOM_MAC
PRINTD("Generating random EUI64 MAC\n");
generate_new_eui64(&buffer);
randomeui64 = 1;
#else
for(i = 0; i < sizeof(default_mac_address); i++) {
buffer[i] = pgm_read_byte_near(default_mac_address + i);
}
#endif
/* eeprom_write_block should not be interrupted */
cli();
eeprom_write_block(&buffer, &eemem_mac_address, sizeof(eemem_mac_address));
for(i = 0; i < sizeof(default_server_name); i++) {
buffer[i] = pgm_read_byte_near(default_server_name + i);
}
eeprom_write_block(&buffer, &eemem_server_name, sizeof(eemem_server_name));
for(i = 0; i < sizeof(default_domain_name); i++) {
buffer[i] = pgm_read_byte_near(default_domain_name + i);
}
eeprom_write_block(&buffer, &eemem_domain_name, sizeof(eemem_domain_name));
eeprom_write_word(&eemem_panid, PARAMS_PANID);
eeprom_write_word(&eemem_panaddr, PARAMS_PANADDR);
eeprom_write_byte(&eemem_txpower, PARAMS_TXPOWER);
eeprom_write_word(&eemem_nodeid, PARAMS_NODEID);
x[0] = PARAMS_CHANNEL;
x[1] = ~x[0];
eeprom_write_word((uint16_t *)&eemem_channel, *(uint16_t *)x);
sei();
}
/* Always returns a valid channel */
return x[0];
}
uint8_t
params_get_eui64(uint8_t *eui64)
{
cli();
eeprom_read_block((void *)eui64, &eemem_mac_address, sizeof(linkaddr_t));
sei();
#if CONTIKI_CONF_RANDOM_MAC
return randomeui64;
#else
return 0;
#endif
}
uint16_t
params_get_panid(void)
{
return eeprom_read_word(&eemem_panid);
}
uint16_t
params_get_panaddr(void)
{
return eeprom_read_word(&eemem_panaddr);
}
uint8_t
params_get_txpower(void)
{
return eeprom_read_byte(&eemem_txpower);
}
#else /* CONTIKI_CONF_SETTINGS_MANAGER */
uint8_t
params_get_channel()
{
uint8_t x;
size_t size = 1;
if(settings_get(SETTINGS_KEY_CHANNEL, 0, (unsigned char *)&x, &size) == SETTINGS_STATUS_OK) {
PRINTD("<-Get RF channel %u\n", x);
} else {
x = PARAMS_CHANNEL;
if(settings_add_uint8(SETTINGS_KEY_CHANNEL, x) == SETTINGS_STATUS_OK) {
PRINTD("->Set EEPROM RF channel to %d\n", x);
}
}
return x;
}
uint8_t
params_get_eui64(uint8_t *eui64)
{
size_t size = sizeof(linkaddr_t);
if(settings_get(SETTINGS_KEY_EUI64, 0, (unsigned char *)eui64, &size) == SETTINGS_STATUS_OK) {
PRINTD("<-Get EUI64 MAC\n");
return 0;
}
#if CONTIKI_CONF_RANDOM_MAC
PRINTD("Generating random EUI64 MAC\n");
generate_new_eui64(eui64);
#else
{ uint8_t i;
for(i = 0; i < 8; i++) {
eui64[i] = pgm_read_byte_near(default_mac_address + i);
}
} /* test this */
#endif
if(settings_add(SETTINGS_KEY_EUI64, (unsigned char *)eui64, 8) == SETTINGS_STATUS_OK) {
PRINTD("->Set EEPROM MAC address\n");
}
#if CONTIKI_CONF_RANDOM_MAC
return 1;
#else
return 0;
#endif
}
uint16_t
params_get_panid(void)
{
uint16_t x;
size_t size = 2;
if(settings_get(SETTINGS_KEY_PAN_ID, 0, (unsigned char *)&x, &size) == SETTINGS_STATUS_OK) {
PRINTD("<-Get PAN ID of %04x\n", x);
} else {
x = PARAMS_PANID;
if(settings_add_uint16(SETTINGS_KEY_PAN_ID, x) == SETTINGS_STATUS_OK) {
PRINTD("->Set EEPROM PAN ID to %04x\n", x);
}
}
return x;
}
uint16_t
params_get_panaddr(void)
{
uint16_t x;
size_t size = 2;
if(settings_get(SETTINGS_KEY_PAN_ADDR, 0, (unsigned char *)&x, &size) == SETTINGS_STATUS_OK) {
PRINTD("<-Get PAN address of %04x\n", x);
} else {
x = PARAMS_PANADDR;
if(settings_add_uint16(SETTINGS_KEY_PAN_ADDR, x) == SETTINGS_STATUS_OK) {
PRINTD("->Set EEPROM PAN address to %04x\n", x);
}
}
return x;
}
uint8_t
params_get_txpower(void)
{
uint8_t x;
size_t size = 1;
if(settings_get(SETTINGS_KEY_TXPOWER, 0, (unsigned char *)&x, &size) == SETTINGS_STATUS_OK) {
PRINTD("<-Get tx power of %d (0=max)\n", x);
} else {
x = PARAMS_TXPOWER;
if(settings_add_uint8(SETTINGS_KEY_TXPOWER, x) == SETTINGS_STATUS_OK) {
PRINTD("->Set EEPROM tx power of %d (0=max)\n", x);
}
}
return x;
}
#endif /* CONTIKI_CONF_SETTINGS_MANAGER */