| 1 | /* $NetBSD: onewirereg.h,v 1.3 2006/04/14 18:38:50 riz Exp $ */ |
| 2 | /* $OpenBSD: onewirereg.h,v 1.1 2006/03/04 16:27:03 grange Exp $ */ |
| 3 | |
| 4 | /* |
| 5 | * Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org> |
| 6 | * |
| 7 | * Permission to use, copy, modify, and distribute this software for any |
| 8 | * purpose with or without fee is hereby granted, provided that the above |
| 9 | * copyright notice and this permission notice appear in all copies. |
| 10 | * |
| 11 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 12 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 13 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 14 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 15 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 16 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 17 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 18 | */ |
| 19 | |
| 20 | #ifndef _DEV_ONEWIRE_ONEWIREREG_H_ |
| 21 | #define _DEV_ONEWIRE_ONEWIREREG_H_ |
| 22 | |
| 23 | /* |
| 24 | * 1-Wire bus protocol definitions. |
| 25 | */ |
| 26 | |
| 27 | /* |
| 28 | * 64-bit ROM section. |
| 29 | */ |
| 30 | |
| 31 | /* Family code */ |
| 32 | #define ONEWIRE_ROM_FAMILY(x) ((x) & 0xff) |
| 33 | #define ONEWIRE_ROM_FAMILY_TYPE(x) ((x) & 0x7f) |
| 34 | #define ONEWIRE_ROM_FAMILY_CUSTOM(x) (((x) >> 7) & 0x1) |
| 35 | |
| 36 | /* Serial number */ |
| 37 | #define ONEWIRE_ROM_SN(x) (((x) >> 8) & 0xffffffffffffULL) |
| 38 | |
| 39 | /* CRC */ |
| 40 | #define ONEWIRE_ROM_CRC(x) (((x) >> 56) & 0xff) |
| 41 | |
| 42 | /* |
| 43 | * Command set. |
| 44 | */ |
| 45 | |
| 46 | /* ROM commands */ |
| 47 | #define ONEWIRE_CMD_READ_ROM 0x33 |
| 48 | #define ONEWIRE_CMD_SKIP_ROM 0xcc |
| 49 | #define ONEWIRE_CMD_MATCH_ROM 0x55 |
| 50 | #define ONEWIRE_CMD_SEARCH_ROM 0xf0 |
| 51 | #define ONEWIRE_CMD_OVERDRIVE_SKIP_ROM 0x3c |
| 52 | #define ONEWIRE_CMD_OVERDRIVE_MATCH_ROM 0x69 |
| 53 | |
| 54 | /* Scratchpad commands */ |
| 55 | #define ONEWIRE_CMD_READ_SCRATCHPAD 0xaa |
| 56 | #define ONEWIRE_CMD_WRITE_SCRATCHPAD 0x0f |
| 57 | #define ONEWIRE_CMD_COPY_SCRATCHPAD 0x55 |
| 58 | |
| 59 | /* Memory commands */ |
| 60 | #define ONEWIRE_CMD_READ_MEMORY 0xf0 |
| 61 | #define ONEWIRE_CMD_WRITE_MEMORY 0x0f |
| 62 | #define ONEWIRE_CMD_EXT_READ_MEMORY 0xa5 |
| 63 | |
| 64 | /* Password commands */ |
| 65 | #define ONEWIRE_CMD_READ_SUBKEY 0x66 |
| 66 | #define ONEWIRE_CMD_WRITE_SUBKEY 0x99 |
| 67 | #define ONEWIRE_CMD_WRITE_PASSWORD 0x5a |
| 68 | |
| 69 | /* Status commands */ |
| 70 | #define ONEWIRE_CMD_READ_STATUS 0xaa |
| 71 | #define ONEWIRE_CMD_WRITE_STATUS 0x55 |
| 72 | |
| 73 | #endif /* !_DEV_ONEWIRE_ONEWIREREG_H_ */ |
| 74 | |