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/*
Copyright (C) 2002 Pedro Zorzenon Neto <pzn@vztech.com.br>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Do not forget to visit Free Software Foundation site: http://fsf.org
$Id: eeprom.h,v 1.3 2003/07/05 18:23:22 pzn Exp $
*/
#ifndef _EEPROM_H
#define _EEPROM_H
#include "memory.h"
#include "parport.h"
#include "eeprpins.h"
/* NOTE: will use unsigned long int because if compiled
* in old DOS compilers, unsigned int will have 16bit
* and will not support values greater than 65535 */
typedef struct {
parport_t * pp;
int access_mode;
unsigned long int write_size;
unsigned int addr_size;
unsigned long int read_size;
unsigned long int total_size;
unsigned char inv_page;
} eeprom_t;
eeprom_t * eeprom_init (unsigned long int parallel_port_address,
unsigned long int write_size,
/* how many bytes can be written sequencially */
unsigned int addr_size,
/* how many words the address command has */
unsigned long int read_size,
/* how many bytes can be read sequencially */
unsigned long int total_size,
/* how many bytes the memory has */
unsigned char inv_page,
/* invert page specification bits in control word
(lsb will go first)
I only know Microchip 24xx515 which uses this */
unsigned int microdelay_factor
/* multiply the standard timing (microseconds) by this
factor. 1 will use standard values */
);
void eeprom_destroy (eeprom_t * self);
/* int eeprom_readbyte (eeprom_t * self, int addr);
int eeprom_writebyte (eeprom_t * self, int addr, int value); */
int eeprom_fullread (eeprom_t * self, memory_t * mem);
int eeprom_fullwrite (eeprom_t *self, memory_t * mem);
void eeprom_power (eeprom_t * self, int poweron);
/* AT24Cxxx values:
*
* I found some chips (from other manufacturers) that have
* write_size smaller than the values found in Atmel datasheet.
* I recommend using write_size smaller than the values below.
*
* model write_size addr_size read_size total_size inv_page
* 24c01 8 1 128 128 0
* 24c02 8 1 256 256 0
* 24c04 16 1 256 512 0
* 24c08 16 1 256 1024 0
* 24c16 16 1 256 2048 0
* 24c32 32 2 4096 4096 0
* 24c64 32 2 8192 8192 0
* 24c128 64 2 16384 16384 0
* 24c256 64 2 32768 32768 0
* 24c512 128 2 65536 65536 0
* 24c515 64 2 32768 65536 1
*
*/
#endif
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