lib24c16.h

eeprom program for 8051 and atmel at89c52 or At89s52

//**********************************************************************
//* PROJECT: Library for 24c01/02/04/08/16 serial EEPROM
//* Copyright (C) 2003, Pedro Ignacio Martos ([e-mail])
//**********************************************************************
//* FILE: lib24c16.h
//**********************************************************************
//* CHANGES:
//* date      author                                   description
//* --------------------------------------------------------------------
//* 07/29/03  pmartos ([e-mail])          initial release
//**********************************************************************
//* DESCRIPTION:
//* This file contains a simple read/write routines for I2C EEPROMS up 
//* to 2KBytes; based on AN 614 from Microchip
//* (http://www.microchip.com)
//**********************************************************************
//  This file is part of lib24c16
//*
//* lib24c16 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.
//*
//* lib24c16 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 lib24c16; if not, write to the Free Software
//* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
//* USA
//**********************************************************************
//* FUNCTIONS DECLARED:
//* void weeprom (char page, char direction, char datum); 
//* char reeprom (char page, char direction);
//**********************************************************************
//* NOTES:
//* you need to define the port pins where the memory is connected like
//* this:
//* bit	at	0x90	SCK; // P1_0 = EEPROM SCK
//* bit at	0x91	SDA; // P1_1 = EEPROM SDA
//*
//* - For parts other than 24c16, 'page' must be set according to the
//*   logical values in pins A0, A1 & A2 (see particular datasheet)
//* - Remember the 10mS busy time in writing cycle
//* - The routines closely resembles the assembler code of the AN
//**********************************************************************
//* COMPILE TIME OPTIONS: sdcc.exe <filename.c> lib24c16.rel
//* DEBUG OPTIONS: None
//**********************************************************************
//* TO DO:
//*       	- add a conditional to avoid multiple definition 
//**********************************************************************

// Prototipe declaration
void weeprom (char page, char direccion, char dato);
char reeprom (char page, char direccion);