1 /* $NetBSD: onewirereg.h,v 1.4 2019/10/25 16:25:14 martin 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) & ((uint64_t)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