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/*****************************************************************************
*
* exosite_meta.c - Exosite meta information handler.
* Copyright (c) 2013, Exosite LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Exosite LLC 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
*
*****************************************************************************/
#include "exosite_meta.h"
#include "drivers/exosite_hal_lwip.h"
#include <string.h>
//#include <inc/common.h>
// external functions
// externs
// local functions
// exported functions
// local defines
// globals
/*****************************************************************************
*
* exosite_meta_init
*
* \param int reset : 1 - reset meta data
*
* \return None
*
* \brief Does whatever we need to do to initialize the NV meta structure
*
*****************************************************************************/
void exosite_meta_init(int reset)
{
char strBuf[META_MARK_SIZE];
exoHAL_EnableMeta(); //turn on the necessary hardware / peripherals
//check our meta mark - if it isn't there, we wipe the meta structure
exosite_meta_read((unsigned char *)strBuf, META_MARK_SIZE, META_MARK);
if (strncmp(strBuf, EXOMARK, META_MARK_SIZE) || reset)
exosite_meta_defaults();
return;
}
/*****************************************************************************
*
* exosite_meta_defaults
*
* \param None
*
* \return None
*
* \brief Writes default meta values to NV memory. Erases existing meta
* information!
*
*****************************************************************************/
void exosite_meta_defaults(void)
{
const unsigned char meta_server_ip[6] = {173,255,209,28,0,80};
exoHAL_EraseMeta(); //erase the information currently in meta
exosite_meta_write((unsigned char *)meta_server_ip, 6, META_SERVER); //store server IP
exosite_meta_write((unsigned char *)EXOMARK, META_MARK_SIZE, META_MARK); //store exosite mark
return;
}
/*****************************************************************************
*
* exosite_meta_write
*
* \param write_buffer - string buffer containing info to write to meta;
* srcBytes - size of string in bytes; element - item from
* MetaElements enum.
*
* \return None
*
* \brief Writes specific meta information to meta memory
*
*****************************************************************************/
void exosite_meta_write(unsigned char * write_buffer, unsigned short srcBytes, unsigned char element)
{
exosite_meta * meta_info = 0;
//TODO - do not write if the data already there is identical...
switch (element) {
case META_CIK:
if (srcBytes > META_CIK_SIZE) return;
exoHAL_WriteMetaItem(write_buffer, srcBytes, (int)meta_info->cik); //store CIK
break;
case META_SERVER:
if (srcBytes > META_SERVER_SIZE) return;
exoHAL_WriteMetaItem(write_buffer, srcBytes, (int)meta_info->server); //store server IP
break;
case META_MARK:
if (srcBytes > META_MARK_SIZE) return;
exoHAL_WriteMetaItem(write_buffer, srcBytes, (int)meta_info->mark); //store exosite mark
break;
case META_UUID:
if (srcBytes > META_UUID_SIZE) return;
exoHAL_WriteMetaItem(write_buffer, srcBytes, (int)meta_info->uuid); //store UUID
break;
case META_MFR:
if (srcBytes > META_MFR_SIZE) return;
exoHAL_WriteMetaItem(write_buffer, srcBytes, (int)meta_info->mfr); //store manufacturing info
break;
case META_NONE:
default:
break;
}
return;
}
/*****************************************************************************
*
* exosite_meta_read
*
* \param read_buffer - string buffer to receive element data; destBytes -
* size of buffer in bytes; element - item from MetaElements enum.
*
* \return None
*
* \brief Writes specific meta information to meta memory
*
*****************************************************************************/
void exosite_meta_read(unsigned char * read_buffer, unsigned short destBytes, unsigned char element)
{
exosite_meta * meta_info = 0;
switch (element) {
case META_CIK:
if (destBytes < META_CIK_SIZE) return;
exoHAL_ReadMetaItem(read_buffer, META_CIK_SIZE, (int)meta_info->cik); //read CIK
break;
case META_SERVER:
if (destBytes < META_SERVER_SIZE) return;
exoHAL_ReadMetaItem(read_buffer, META_SERVER_SIZE, (int)meta_info->server); //read server IP
break;
case META_MARK:
if (destBytes < META_MARK_SIZE) return;
exoHAL_ReadMetaItem(read_buffer, META_MARK_SIZE, (int)meta_info->mark); //read exosite mark
break;
case META_UUID:
if (destBytes < META_UUID_SIZE) return;
exoHAL_ReadMetaItem(read_buffer, META_UUID_SIZE, (int)meta_info->uuid); //read provisioning UUID
break;
case META_MFR:
if (destBytes < META_MFR_SIZE) return;
exoHAL_ReadMetaItem(read_buffer, META_MFR_SIZE, (int)meta_info->mfr); //read manufacturing info
break;
case META_NONE:
default:
break;
}
return;
}
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