nes-proj/os/dev/eeprom.h
2017-09-01 15:29:00 +02:00

117 lines
3.2 KiB
C

/* Copyright (c) 2004 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
/**
* \file
* EEPROM functions.
* \author Adam Dunkels <adam@sics.se>
*/
/**
* \addtogroup dev
* @{
*/
/**
* \defgroup eeprom EEPROM API
*
* The EEPROM API defines a common interface for EEPROM access on
* Contiki platforms.
*
* A platform with EEPROM support must implement this API.
*
* @{
*/
#ifndef EEPROM_H_
#define EEPROM_H_
typedef unsigned short eeprom_addr_t;
#define EEPROM_NULL 0
#ifdef EEPROM_CONF_SIZE
#define EEPROM_SIZE (EEPROM_CONF_SIZE)
#else
#define EEPROM_SIZE 0 /* Default to no EEPROM */
#endif
#ifdef EEPROM_CONF_END_ADDR
#define EEPROM_END_ADDR (EEPROM_CONF_END_ADDR)
#else
#define EEPROM_END_ADDR (EEPROM_SIZE - 1)
#endif
/**
* Write a buffer into EEPROM.
*
* This function writes a buffer of the specified size into EEPROM.
*
* \param addr The address in EEPROM to which the buffer should be written.
*
* \param buf A pointer to the buffer from which data is to be read.
*
* \param size The number of bytes to write into EEPROM.
*
*
*/
void eeprom_write(eeprom_addr_t addr, unsigned char *buf, int size);
/**
* Read data from the EEPROM.
*
* This function reads a number of bytes from the specified address in
* EEPROM and into a buffer in memory.
*
* \param addr The address in EEPROM from which the data should be read.
*
* \param buf A pointer to the buffer to which the data should be stored.
*
* \param size The number of bytes to read.
*
*
*/
void eeprom_read(eeprom_addr_t addr, unsigned char *buf, int size);
/**
* Initialize the EEPROM module
*
* This function initializes the EEPROM module and is called from the
* bootup code.
*
*/
void eeprom_init(void);
#endif /* EEPROM_H_ */
/** @} */
/** @} */