/elec/propeller-clock

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76 by edam
switch button to no interim presses during settings mode; added NVRAM support
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/*
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 * nvram.h
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 *
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 * Copyright (C) 2012 Tim Marston <tim@ed.am> and Dan Marston.
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 *
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 * This file is part of propeller-clock (hereafter referred to as "this
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 * program"). See http://ed.am/dev/software/arduino/propeller-clock for more
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 * information.
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU Lesser General Public License as published
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 * by the Free Software Foundation, either version 3 of the License, or
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 * (at your option) any later version.
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 *
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 * This program 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
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 * GNU Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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#ifndef _NVRAM_H_
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#define _NVRAM_H_
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#include <EEPROM.h>
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namespace Nvram
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{
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	enum {
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		NVRAM_FONT = 0, // 1 byte
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	};
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	/**
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	 * load something
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	 *
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	 * @param offset address to load from, use NVRAM_* enum
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	 * @param data where to load to
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	 */
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	template< class T >
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	void load( int offset, T &data )
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	{
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		unsigned char *p = reinterpret_cast< unsigned char * >( &data );
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		for( unsigned int a = 0; a < sizeof( T ); a++ )
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			*( p++ ) = EEPROM.read( offset++ );
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	}
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	/**
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	 * Save something.
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	 *
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	 * @param offset address to save to, use NVRAM_* enum
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	 * @param data to save
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	 */
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	template< class T >
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	void save( int offset, T &data )
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	{
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		unsigned char *p = reinterpret_cast< unsigned char * >( &data );
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		for( unsigned int a = 0; a < sizeof( T ); a++ )
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			EEPROM.write( offset++, *( p++ ) );
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	}
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}
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#endif //_NVRAM_H_