src/nvram.c
author etisserant
Thu, 10 Aug 2006 17:38:53 +0200
changeset 45 45885c4e3e56
parent 0 4472ee7c6c3e
permissions -rw-r--r--
Updated doc
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/*
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This file is part of CanFestival, a library implementing CanOpen Stack.
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 Author: CANopen Canada (canfestival@canopencanada.ca)
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See COPYING file for copyrights details.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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*/
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/*
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	nvram.c
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	save the content of the dictionnary into non-volatile memory
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	the order of storage must be the same as the order of retrieving
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	note (1)
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	may need to store/retrieve specific data from non-volatile
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	in that case, we need to address where it is stored
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	without storing the address in a vector
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	- solution 1 : walk throught the list without action until the
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	sought object is found.
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*/
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#include <stdio.h>
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#include <data.h>
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#include <applicfg.h>
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#include <objdictdef.h>
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#include "can_driver.h"
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int canSaveData(indextable *dict, int max_index)
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{
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	int i, j;
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	if (nvram_open() < 0)
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		return -1;
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	subindex  *pSubindex;
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	for(i=0; i<max_index; i++)
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	{
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		pSubindex = dict[i].pSubindex;
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		for(j=0; j<dict[i].bSubCount; j++)
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		{
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			/* check pSubindex[j].bAccessType */
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			nvram_write(pSubindex[j].bDataType,
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				pSubindex[j].bAccessType,
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				pSubindex[j].pObject);
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		}
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	}
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	nvram_close();
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	return 0;
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}
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int canReadData(indextable *dict, int max_index)
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{
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	int i, j;
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	subindex *pSubindex;
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	union
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	{
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		UNS8   u8;
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		UNS16  u16;
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		UNS32  u32;
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		float  r4;
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		double r8;
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	} object;
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	if (nvram_open() < 0)
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		return -1;
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	for(i=0; i<max_index; i++)
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	{
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		pSubindex = dict[i].pSubindex;
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		for(j=0; j<dict[i].bSubCount; j++)
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		{
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			nvram_read(pSubindex[j].bDataType,
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				pSubindex[j].bAccessType,
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				(void *)&object);
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		}
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	}
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	nvram_close();
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	return 0;
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}
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