mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-23 01:29:33 +00:00
ed2dd29eda
Unfortunately, some platforms don't properly drop unreferenced functions, so on these broken platforms we can save a significant amount of space by skipping the definition of the convenience functions.
369 lines
12 KiB
C
369 lines
12 KiB
C
/*
|
|
* Copyright (c) 2013, Robert Quattlebaum
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef __CONTIKI_SETTINGS_H__
|
|
#define __CONTIKI_SETTINGS_H__
|
|
|
|
/** @file settings.h
|
|
* @brief Settings Manager
|
|
* @author Robert Quattlebaum <darco@deepdarc.com>
|
|
*
|
|
* ## Overview ##
|
|
*
|
|
* The settings manager is a EEPROM-based key-value store. Keys
|
|
* are 16-bit integers and values may be up to 16,383 bytes long.
|
|
* It is intended to be used to store configuration-related information,
|
|
* like network settings, radio channels, etc.
|
|
*
|
|
* ## Features ##
|
|
*
|
|
* * Robust data format which requires no initialization.
|
|
* * Supports multiple values with the same key.
|
|
* * Data can be appended without erasing EEPROM.
|
|
* * Max size of settings data can be easily increased in the future,
|
|
* as long as it doesn't overlap with application data.
|
|
*
|
|
* ## Data Format ##
|
|
*
|
|
* The format was inspired by OLPC manufacturing data, as described here:
|
|
* <http://wiki.laptop.org/go/Manufacturing_data>
|
|
*
|
|
* Since the beginning of EEPROM often contains application-specific
|
|
* information, the best place to store settings is at the end of
|
|
* EEPROM. Because we are starting at the end of EEPROM, it makes sense
|
|
* to grow the list of key-value pairs downward, toward the start of
|
|
* EEPROM.
|
|
*
|
|
* Each key-value pair is stored in memory in the following format:
|
|
* <table>
|
|
* <thead>
|
|
* <td>Order</td>
|
|
* <td>Size<small> (in bytes)</small></td>
|
|
* <td>Name</td>
|
|
* <td>Description</td>
|
|
* </thead>
|
|
* <tr>
|
|
* <td>0</td>
|
|
* <td>2</td>
|
|
* <td>key</td>
|
|
* <td></td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>-2</td>
|
|
* <td>1</td>
|
|
* <td>size_check</td>
|
|
* <td>One's-complement of next byte</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>-3</td>
|
|
* <td>1 or 2</td>
|
|
* <td>size</td>
|
|
* <td>The size of the value, in bytes.</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>-4 or -5</td>
|
|
* <td>variable</td>
|
|
* <td>value</td>
|
|
* </tr>
|
|
* </table>
|
|
*
|
|
* The end of the key-value pairs is denoted by the first invalid entry.
|
|
* An invalid entry has any of the following attributes:
|
|
*
|
|
* * The size_check byte doesn't match the one's compliment
|
|
* of the size byte (or size_low byte).
|
|
* * The key has a value of 0x0000.
|
|
*
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include "dev/eeprom.h"
|
|
|
|
/*****************************************************************************/
|
|
// MARK: - Types
|
|
|
|
typedef enum {
|
|
SETTINGS_STATUS_OK = 0,
|
|
SETTINGS_STATUS_FAILURE,
|
|
SETTINGS_STATUS_INVALID_ARGUMENT,
|
|
SETTINGS_STATUS_NOT_FOUND,
|
|
SETTINGS_STATUS_OUT_OF_SPACE,
|
|
SETTINGS_STATUS_VALUE_TOO_BIG,
|
|
SETTINGS_STATUS_UNIMPLEMENTED,
|
|
} settings_status_t;
|
|
|
|
typedef uint16_t settings_key_t;
|
|
|
|
typedef uint16_t settings_length_t;
|
|
|
|
/*****************************************************************************/
|
|
// MARK: - Settings Keys
|
|
|
|
/** Two-character constant macro */
|
|
#define TCC(a,b) ((a)+(b)*256)
|
|
|
|
/* All-capital-letter constants are always contiki-defined. */
|
|
#define SETTINGS_KEY_EUI64 TCC('E','8') /**< EUI64 Address, 8 bytes */
|
|
#define SETTINGS_KEY_EUI48 TCC('E','6') /*!< MAC Address, 6 bytes */
|
|
#define SETTINGS_KEY_CHANNEL TCC('C','H') /*!< Channel number, uint8_t */
|
|
#define SETTINGS_KEY_TXPOWER TCC('T','P') /*!< Transmit power, uint8_t */
|
|
#define SETTINGS_KEY_PAN_ID TCC('P','N') /*!< PAN ID, uint16_t */
|
|
#define SETTINGS_KEY_PAN_ADDR TCC('P','A') /*!< PAN address, uint16_t */
|
|
#define SETTINGS_KEY_AES128KEY TCC('S','K') /*!< AES128 key, 16 bytes */
|
|
#define SETTINGS_KEY_AES128ENABLED TCC('S','E') /*!< AES128 enabled, bool */
|
|
#define SETTINGS_KEY_HOSTNAME TCC('H','N') /*!< Hostname, C-String */
|
|
#define SETTINGS_KEY_DOMAINNAME TCC('D','N') /*!< Domainname, C-String */
|
|
|
|
/*****************************************************************************/
|
|
// MARK: - Experimental Settings Keys
|
|
|
|
#define SETTINGS_KEY_RDC_INDEX TCC('R','D') /*!< RDC index, uint8_t */
|
|
#define SETTINGS_KEY_CHANNEL_MASK TCC('C','M') /*!< Channel mask, uint16_t */
|
|
|
|
/*****************************************************************************/
|
|
// MARK: - Constants
|
|
|
|
/** Use this when you want to retrieve the last item */
|
|
#define SETTINGS_LAST_INDEX 0xFF
|
|
|
|
#define SETTINGS_INVALID_KEY 0xFFFF
|
|
|
|
#define SETTINGS_INVALID_ITER EEPROM_NULL
|
|
|
|
#ifndef SETTINGS_CONF_SUPPORT_LARGE_VALUES
|
|
#define SETTINGS_CONF_SUPPORT_LARGE_VALUES 0
|
|
#endif
|
|
|
|
#if SETTINGS_CONF_SUPPORT_LARGE_VALUES
|
|
#define SETTINGS_MAX_VALUE_SIZE 0x3FFF /* 16383 bytes */
|
|
#else
|
|
#define SETTINGS_MAX_VALUE_SIZE 0x7F /* 127 bytes */
|
|
#endif
|
|
|
|
/*****************************************************************************/
|
|
// MARK: - Settings accessors
|
|
|
|
/** Fetches the value associated with the given key. */
|
|
extern settings_status_t settings_get(settings_key_t key, uint8_t index,
|
|
uint8_t *value,
|
|
settings_length_t * value_size);
|
|
|
|
/** Adds the given key-value pair to the end of the settings store. */
|
|
extern settings_status_t settings_add(settings_key_t key,
|
|
const uint8_t *value,
|
|
settings_length_t value_size);
|
|
|
|
/** Checks to see if the given key exists. */
|
|
extern uint8_t settings_check(settings_key_t key, uint8_t index);
|
|
|
|
/** Reinitializes all of the EEPROM used by settings. */
|
|
extern void settings_wipe(void);
|
|
|
|
/** Sets the value for the given key. If the key already exists in
|
|
* the settings store, then its value will be replaced.
|
|
*/
|
|
extern settings_status_t settings_set(settings_key_t key,
|
|
const uint8_t *value,
|
|
settings_length_t value_size);
|
|
|
|
/** Removes the given key (at the given index) from the settings store. */
|
|
extern settings_status_t settings_delete(settings_key_t key, uint8_t index);
|
|
|
|
/*****************************************************************************/
|
|
// MARK: - Settings traversal functions
|
|
|
|
typedef eeprom_addr_t settings_iter_t;
|
|
|
|
/** Will return extern SETTINGS_INVALID_ITER if the settings store is empty. */
|
|
extern settings_iter_t settings_iter_begin();
|
|
|
|
/** Will return extern SETTINGS_INVALID_ITER if at the end of settings list. */
|
|
extern settings_iter_t settings_iter_next(settings_iter_t iter);
|
|
|
|
extern uint8_t settings_iter_is_valid(settings_iter_t iter);
|
|
|
|
extern settings_key_t settings_iter_get_key(settings_iter_t iter);
|
|
|
|
extern settings_length_t settings_iter_get_value_length(settings_iter_t iter);
|
|
|
|
extern eeprom_addr_t settings_iter_get_value_addr(settings_iter_t iter);
|
|
|
|
extern settings_length_t settings_iter_get_value_bytes(settings_iter_t item,
|
|
void *bytes,
|
|
settings_length_t
|
|
max_length);
|
|
|
|
extern settings_status_t settings_iter_delete(settings_iter_t item);
|
|
|
|
/*****************************************************************************/
|
|
// MARK: - inline convenience functions
|
|
|
|
/* Unfortunately, some platforms don't properly drop unreferenced functions,
|
|
* so on these broken platforms we can save a significant amount
|
|
* of space by skipping the definition of the convenience functions.
|
|
*/
|
|
#if !SETTINGS_CONF_SKIP_CONVENIENCE_FUNCS
|
|
|
|
static CC_INLINE const char *
|
|
settings_get_cstr(settings_key_t key, uint8_t index, char *c_str,
|
|
settings_length_t c_str_size)
|
|
{
|
|
/* Save room for the zero termination. */
|
|
c_str_size--;
|
|
|
|
if(settings_get(key, index, (uint8_t *)c_str, &c_str_size) == SETTINGS_STATUS_OK) {
|
|
/* Zero terminate. */
|
|
c_str[c_str_size] = 0;
|
|
} else {
|
|
c_str = NULL;
|
|
}
|
|
return c_str;
|
|
}
|
|
|
|
static CC_INLINE settings_status_t
|
|
settings_set_cstr(settings_key_t key, const char* c_str)
|
|
{
|
|
return settings_set(key, (const uint8_t *)c_str, strlen(c_str));
|
|
}
|
|
|
|
static CC_INLINE settings_status_t
|
|
settings_add_cstr(settings_key_t key, const char* c_str)
|
|
{
|
|
return settings_add(key, (const uint8_t *)c_str, strlen(c_str));
|
|
}
|
|
|
|
static CC_INLINE uint8_t
|
|
settings_get_bool_with_default(settings_key_t key, uint8_t index,
|
|
uint8_t default_value)
|
|
{
|
|
uint8_t ret = default_value;
|
|
settings_length_t sizeof_uint8 = sizeof(uint8_t);
|
|
|
|
settings_get(key, index, (uint8_t *)&ret, &sizeof_uint8);
|
|
return !!ret;
|
|
}
|
|
|
|
static CC_INLINE uint8_t
|
|
settings_get_uint8(settings_key_t key, uint8_t index)
|
|
{
|
|
uint8_t ret = 0;
|
|
settings_length_t sizeof_uint8 = sizeof(uint8_t);
|
|
|
|
settings_get(key, index, (uint8_t *)&ret, &sizeof_uint8);
|
|
return ret;
|
|
}
|
|
|
|
static CC_INLINE settings_status_t
|
|
settings_add_uint8(settings_key_t key, uint8_t value)
|
|
{
|
|
return settings_add(key, (const uint8_t *)&value, sizeof(uint8_t));
|
|
}
|
|
|
|
static CC_INLINE settings_status_t
|
|
settings_set_uint8(settings_key_t key, uint8_t value)
|
|
{
|
|
return settings_set(key, (const uint8_t *)&value, sizeof(uint8_t));
|
|
}
|
|
|
|
static CC_INLINE uint16_t
|
|
settings_get_uint16(settings_key_t key, uint8_t index)
|
|
{
|
|
uint16_t ret = 0;
|
|
settings_length_t sizeof_uint16 = sizeof(uint16_t);
|
|
|
|
settings_get(key, index, (uint8_t *)&ret, &sizeof_uint16);
|
|
return ret;
|
|
}
|
|
|
|
static CC_INLINE settings_status_t
|
|
settings_add_uint16(settings_key_t key, uint16_t value)
|
|
{
|
|
return settings_add(key, (const uint8_t *)&value, sizeof(uint16_t));
|
|
}
|
|
|
|
static CC_INLINE settings_status_t
|
|
settings_set_uint16(settings_key_t key, uint16_t value)
|
|
{
|
|
return settings_set(key, (const uint8_t *)&value, sizeof(uint16_t));
|
|
}
|
|
|
|
static CC_INLINE uint32_t
|
|
settings_get_uint32(settings_key_t key, uint8_t index)
|
|
{
|
|
uint32_t ret = 0;
|
|
settings_length_t sizeof_uint32 = sizeof(uint32_t);
|
|
|
|
settings_get(key, index, (uint8_t *)&ret, &sizeof_uint32);
|
|
return ret;
|
|
}
|
|
|
|
static CC_INLINE settings_status_t
|
|
settings_add_uint32(settings_key_t key, uint32_t value)
|
|
{
|
|
return settings_add(key, (const uint8_t *)&value, sizeof(uint32_t));
|
|
}
|
|
|
|
static CC_INLINE settings_status_t
|
|
settings_set_uint32(settings_key_t key, uint32_t value)
|
|
{
|
|
return settings_set(key, (const uint8_t *)&value, sizeof(uint32_t));
|
|
}
|
|
|
|
#if __int64_t_defined
|
|
static CC_INLINE uint64_t
|
|
settings_get_uint64(settings_key_t key, uint8_t index)
|
|
{
|
|
uint64_t ret = 0;
|
|
settings_length_t sizeof_uint64 = sizeof(uint64_t);
|
|
|
|
settings_get(key, index, (uint8_t *)&ret, &sizeof_uint64);
|
|
return ret;
|
|
}
|
|
|
|
static CC_INLINE settings_status_t
|
|
settings_add_uint64(settings_key_t key, uint64_t value)
|
|
{
|
|
return settings_add(key, (const uint8_t *)&value, sizeof(uint64_t));
|
|
}
|
|
|
|
static CC_INLINE settings_status_t
|
|
settings_set_uint64(settings_key_t key, uint64_t value)
|
|
{
|
|
return settings_set(key, (const uint8_t *)&value, sizeof(uint64_t));
|
|
}
|
|
#endif /* __int64_t_defined */
|
|
|
|
#endif /* !SETTINGS_CONF_SKIP_CONVENIENCE_FUNCS */
|
|
|
|
#endif /* !defined(__CONTIKI_SETTINGS_H__) */
|