/* $NetBSD: onewirereg.h,v 1.4 2019/10/25 16:25:14 martin Exp $ */ /* $OpenBSD: onewirereg.h,v 1.1 2006/03/04 16:27:03 grange Exp $ */ /* * Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef _DEV_ONEWIRE_ONEWIREREG_H_ #define _DEV_ONEWIRE_ONEWIREREG_H_ /* * 1-Wire bus protocol definitions. */ /* * 64-bit ROM section. */ /* Family code */ #define ONEWIRE_ROM_FAMILY(x) ((x) & 0xff) #define ONEWIRE_ROM_FAMILY_TYPE(x) ((x) & 0x7f) #define ONEWIRE_ROM_FAMILY_CUSTOM(x) (((x) >> 7) & 0x1) /* Serial number */ #define ONEWIRE_ROM_SN(x) (((x) >> 8) & ((uint64_t)0xffffffffffffULL)) /* CRC */ #define ONEWIRE_ROM_CRC(x) (((x) >> 56) & 0xff) /* * Command set. */ /* ROM commands */ #define ONEWIRE_CMD_READ_ROM 0x33 #define ONEWIRE_CMD_SKIP_ROM 0xcc #define ONEWIRE_CMD_MATCH_ROM 0x55 #define ONEWIRE_CMD_SEARCH_ROM 0xf0 #define ONEWIRE_CMD_OVERDRIVE_SKIP_ROM 0x3c #define ONEWIRE_CMD_OVERDRIVE_MATCH_ROM 0x69 /* Scratchpad commands */ #define ONEWIRE_CMD_READ_SCRATCHPAD 0xaa #define ONEWIRE_CMD_WRITE_SCRATCHPAD 0x0f #define ONEWIRE_CMD_COPY_SCRATCHPAD 0x55 /* Memory commands */ #define ONEWIRE_CMD_READ_MEMORY 0xf0 #define ONEWIRE_CMD_WRITE_MEMORY 0x0f #define ONEWIRE_CMD_EXT_READ_MEMORY 0xa5 /* Password commands */ #define ONEWIRE_CMD_READ_SUBKEY 0x66 #define ONEWIRE_CMD_WRITE_SUBKEY 0x99 #define ONEWIRE_CMD_WRITE_PASSWORD 0x5a /* Status commands */ #define ONEWIRE_CMD_READ_STATUS 0xaa #define ONEWIRE_CMD_WRITE_STATUS 0x55 #endif /* !_DEV_ONEWIRE_ONEWIREREG_H_ */ |