3 * Internal eeprom Handler
4 * Copyright (C) 2013-06-13 K.Ohta <whatisthis.sowhat ai gmail.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2,
10 * or (at your option) any later version.
11 * This library / program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
14 * See the GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this library; see the file COPYING. If not, write to the
18 * Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
21 * As a special exception, if you link this(includeed from sdcc) library
22 * with other files, some of which are compiled with SDCC,
23 * to produce an executable, this library does not by itself cause
24 * the resulting executable to be covered by the GNU General Public License.
25 * This exception does not however invalidate any other reasons why
26 * the executable file might be covered by the GNU General Public License.
38 * Basic IO routine for EEPROM.
40 extern unsigned char eeprom_readbyte(unsigned int offset);
41 extern unsigned char eeprom_writebyte(unsigned int offset, unsigned char data);
45 extern unsigned int calcsum_byte(unsigned int seed, unsigned char byte);
46 extern unsigned char checksum_eeprom(unsigned int seed, unsigned int offset, unsigned int bytes);
50 extern unsigned int format_eeprom(unsigned int start, unsigned int bytes);
52 * Read/Write with checksum.
54 extern unsigned int readword_eeprom(unsigned int *p, unsigned int *sum);
55 extern unsigned char readbyte_eeprom(unsigned int *p, unsigned int *sum);
56 extern unsigned int writeword_eeprom(unsigned int *p, unsigned int *sum, unsigned int word);
57 extern unsigned int writebyte_eeprom(unsigned int *p, unsigned int *sum, unsigned char b);
60 //extern unsigned int calcsum_frequencies(__freqset_t *p, unsigned int start);