Annotation of sys/dev/onewire/onewirereg.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: onewirereg.h,v 1.1 2006/03/04 16:27:03 grange Exp $ */
2:
3: /*
4: * Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #ifndef _DEV_ONEWIRE_ONEWIREREG_H_
20: #define _DEV_ONEWIRE_ONEWIREREG_H_
21:
22: /*
23: * 1-Wire bus protocol definitions.
24: */
25:
26: /*
27: * 64-bit ROM section.
28: */
29:
30: /* Family code */
31: #define ONEWIRE_ROM_FAMILY(x) ((x) & 0xff)
32: #define ONEWIRE_ROM_FAMILY_TYPE(x) ((x) & 0x7f)
33: #define ONEWIRE_ROM_FAMILY_CUSTOM(x) (((x) >> 7) & 0x1)
34:
35: /* Serial number */
36: #define ONEWIRE_ROM_SN(x) (((x) >> 8) & 0xffffffffffffULL)
37:
38: /* CRC */
39: #define ONEWIRE_ROM_CRC(x) (((x) >> 56) & 0xff)
40:
41: /*
42: * Command set.
43: */
44:
45: /* ROM commands */
46: #define ONEWIRE_CMD_READ_ROM 0x33
47: #define ONEWIRE_CMD_SKIP_ROM 0xcc
48: #define ONEWIRE_CMD_MATCH_ROM 0x55
49: #define ONEWIRE_CMD_SEARCH_ROM 0xf0
50: #define ONEWIRE_CMD_OVERDRIVE_SKIP_ROM 0x3c
51: #define ONEWIRE_CMD_OVERDRIVE_MATCH_ROM 0x69
52:
53: /* Scratchpad commands */
54: #define ONEWIRE_CMD_READ_SCRATCHPAD 0xaa
55: #define ONEWIRE_CMD_WRITE_SCRATCHPAD 0x0f
56: #define ONEWIRE_CMD_COPY_SCRATCHPAD 0x55
57:
58: /* Memory commands */
59: #define ONEWIRE_CMD_READ_MEMORY 0xf0
60: #define ONEWIRE_CMD_WRITE_MEMORY 0x0f
61: #define ONEWIRE_CMD_EXT_READ_MEMORY 0xa5
62:
63: /* Password commands */
64: #define ONEWIRE_CMD_READ_SUBKEY 0x66
65: #define ONEWIRE_CMD_WRITE_SUBKEY 0x99
66: #define ONEWIRE_CMD_WRITE_PASSWORD 0x5a
67:
68: /* Status commands */
69: #define ONEWIRE_CMD_READ_STATUS 0xaa
70: #define ONEWIRE_CMD_WRITE_STATUS 0x55
71:
72: #endif /* !_DEV_ONEWIRE_ONEWIREREG_H_ */
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