4 * Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
5 * This file is part of DevLib - See README.devlib for information.
10 * \author Stefano Fedrigo <aleph@develer.com>
11 * \author Bernardo Innocenti <bernie@develer.com>
13 * \brief Driver for the 24xx16 and 24xx256 I2C EEPROMS (interface)
18 *#* Revision 1.10 2006/09/13 18:29:54 bernie
19 *#* e2addr(): New macro.
21 *#* Revision 1.9 2006/07/19 12:56:25 bernie
22 *#* Convert to new Doxygen style.
24 *#* Revision 1.8 2005/11/27 23:33:40 bernie
25 *#* Use appconfig.h instead of cfg/config.h.
27 *#* Revision 1.7 2005/11/04 16:20:02 bernie
28 *#* Fix reference to README.devlib in header.
30 *#* Revision 1.6 2005/04/11 19:10:27 bernie
31 *#* Include top-level headers from cfg/ subdir.
33 *#* Revision 1.5 2004/11/02 17:50:02 bernie
34 *#* CONFIG_EEPROM_VERIFY: New config option.
36 *#* Revision 1.4 2004/08/25 14:12:08 rasky
37 *#* Aggiornato il comment block dei log RCS
39 *#* Revision 1.3 2004/08/10 06:57:22 bernie
40 *#* eeprom_erase(): New function.
42 *#* Revision 1.2 2004/07/29 22:57:09 bernie
43 *#* Add 24LC16 support.
45 *#* Revision 1.1 2004/07/20 17:11:18 bernie
46 *#* Import into DevLib.
52 #include <cfg/compiler.h>
53 #include <appconfig.h>
56 * \name Values for CONFIG_EEPROM_TYPE
59 #define EEPROM_24XX16 1
60 #define EEPROM_24XX256 2
63 #if CONFIG_EEPROM_TYPE == EEPROM_24XX16
64 #define EEPROM_BLKSIZE 0x10 ///< Eeprom block size (16byte)
65 #define EEPROM_SIZE 0x800 ///< Eeprom total size (2kB)
66 #elif CONFIG_EEPROM_TYPE == EEPROM_24XX256
67 #define EEPROM_BLKSIZE 0x40 ///< Eeprom block size (64byte)
68 #define EEPROM_SIZE 0x8000 ///< Eeprom total size (32kB)
70 #error Unsupported EEPROM type.
73 /// Type for EEPROM addresses
74 typedef uint16_t e2addr_t;
77 * Macro for E2Layout offset calculation
79 * \note We can't just use offsetof() here because we could use
80 * non-constant expressions to access array elements.
82 * \note E2Layout is a structure that must be defined in user files.
84 #define e2addr(x) ((e2addr_t)&(((struct E2Layout *)0)->x))
87 bool eeprom_write(e2addr_t addr, const void *buf, size_t count);
88 bool eeprom_read(e2addr_t addr, void *buf, size_t count);
89 bool eeprom_write_char(e2addr_t addr, char c);
90 int eeprom_read_char(e2addr_t addr);
91 void eeprom_erase(e2addr_t addr, size_t count);
92 void eeprom_init(void);
93 void eeprom_test(void);
95 #endif /* DRV_EEPROM_H */