4 Copyright 2008, 2009 Michel Pollet <buserror@gmail.com>
6 This file is part of simavr.
8 simavr is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 simavr is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with simavr. If not, see <http://www.gnu.org/licenses/>.
22 #ifndef __AVR_EEPROM_H__
23 #define __AVR_EEPROM_H__
27 typedef struct avr_eeprom_t {
30 uint8_t * eeprom; // actual bytes
31 uint16_t size; // size for this MCU
37 // eepm -- eeprom write mode
38 uint8_t r_eecr; // shortcut, assumes these bits fit in that register
40 avr_regbit_t eempe; // eeprom master program enable
41 avr_regbit_t eepe; // eeprom program enable
42 avr_regbit_t eere; // eeprom read enable
44 avr_int_vector_t ready; // EERIE vector
47 void avr_eeprom_init(avr_t * avr, avr_eeprom_t * port);
49 typedef struct avr_eeprom_desc_t {
55 #define AVR_IOCTL_EEPROM_GET AVR_IOCTL_DEF('e','e','g','p')
56 #define AVR_IOCTL_EEPROM_SET AVR_IOCTL_DEF('e','e','s','p')
60 * the eeprom block seems to be very similar across AVRs,
61 * so here is a macro to declare a "typical" one in a core.
64 #define AVR_EEPROM_DECLARE(_vector) \
71 .eepm = { AVR_IO_REGBIT(EECR, EEPM0), AVR_IO_REGBIT(EECR, EEPM1) },\
72 .eempe = AVR_IO_REGBIT(EECR, EEMPE),\
73 .eepe = AVR_IO_REGBIT(EECR, EEPE),\
74 .eere = AVR_IO_REGBIT(EECR, EERE),\
76 .enable = AVR_IO_REGBIT(EECR, EERIE),\
82 * no EEPM registers in atmega128
84 #define AVR_EEPROM_DECLARE_NOEEPM(_vector) \
92 .eempe = AVR_IO_REGBIT(EECR, EEMWE),\
93 .eepe = AVR_IO_REGBIT(EECR, EEWE),\
94 .eere = AVR_IO_REGBIT(EECR, EERE),\
96 .enable = AVR_IO_REGBIT(EECR, EERIE),\
103 * macro definition without a high address bit register,
104 * which is not implemented in some tiny AVRs.
107 #define AVR_EEPROM_DECLARE_8BIT(_vector) \
113 .eepm = { AVR_IO_REGBIT(EECR, EEPM0), AVR_IO_REGBIT(EECR, EEPM1) },\
114 .eempe = AVR_IO_REGBIT(EECR, EEMPE),\
115 .eepe = AVR_IO_REGBIT(EECR, EEPE),\
116 .eere = AVR_IO_REGBIT(EECR, EERE),\
118 .enable = AVR_IO_REGBIT(EECR, EERIE),\
123 #endif /* __AVR_EEPROM_H__ */