74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/* $NetBSD: onewirereg.h,v 1.3 2006/04/14 18:38:50 riz Exp $ */
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/* $OpenBSD: onewirereg.h,v 1.1 2006/03/04 16:27:03 grange Exp $ */
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/*
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* Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _DEV_ONEWIRE_ONEWIREREG_H_
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#define _DEV_ONEWIRE_ONEWIREREG_H_
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/*
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* 1-Wire bus protocol definitions.
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*/
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/*
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* 64-bit ROM section.
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*/
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/* Family code */
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#define ONEWIRE_ROM_FAMILY(x) ((x) & 0xff)
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#define ONEWIRE_ROM_FAMILY_TYPE(x) ((x) & 0x7f)
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#define ONEWIRE_ROM_FAMILY_CUSTOM(x) (((x) >> 7) & 0x1)
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/* Serial number */
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#define ONEWIRE_ROM_SN(x) (((x) >> 8) & 0xffffffffffffULL)
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/* CRC */
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#define ONEWIRE_ROM_CRC(x) (((x) >> 56) & 0xff)
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/*
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* Command set.
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*/
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/* ROM commands */
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#define ONEWIRE_CMD_READ_ROM 0x33
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#define ONEWIRE_CMD_SKIP_ROM 0xcc
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#define ONEWIRE_CMD_MATCH_ROM 0x55
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#define ONEWIRE_CMD_SEARCH_ROM 0xf0
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#define ONEWIRE_CMD_OVERDRIVE_SKIP_ROM 0x3c
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#define ONEWIRE_CMD_OVERDRIVE_MATCH_ROM 0x69
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/* Scratchpad commands */
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#define ONEWIRE_CMD_READ_SCRATCHPAD 0xaa
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#define ONEWIRE_CMD_WRITE_SCRATCHPAD 0x0f
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#define ONEWIRE_CMD_COPY_SCRATCHPAD 0x55
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/* Memory commands */
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#define ONEWIRE_CMD_READ_MEMORY 0xf0
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#define ONEWIRE_CMD_WRITE_MEMORY 0x0f
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#define ONEWIRE_CMD_EXT_READ_MEMORY 0xa5
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/* Password commands */
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#define ONEWIRE_CMD_READ_SUBKEY 0x66
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#define ONEWIRE_CMD_WRITE_SUBKEY 0x99
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#define ONEWIRE_CMD_WRITE_PASSWORD 0x5a
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/* Status commands */
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#define ONEWIRE_CMD_READ_STATUS 0xaa
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#define ONEWIRE_CMD_WRITE_STATUS 0x55
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#endif /* !_DEV_ONEWIRE_ONEWIREREG_H_ */
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