Annotation of sys/dev/onewire/onewirereg.h, Revision 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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