1/* $NetBSD: onewirereg.h,v 1.2 2006/04/08 23:41:46 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