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      1  1.4  martin /*	$NetBSD: onewirereg.h,v 1.4 2019/10/25 16:25:14 martin Exp $	*/
      2  1.1     riz /*	$OpenBSD: onewirereg.h,v 1.1 2006/03/04 16:27:03 grange Exp $	*/
      3  1.1     riz 
      4  1.1     riz /*
      5  1.1     riz  * Copyright (c) 2006 Alexander Yurchenko <grange (at) openbsd.org>
      6  1.1     riz  *
      7  1.1     riz  * Permission to use, copy, modify, and distribute this software for any
      8  1.1     riz  * purpose with or without fee is hereby granted, provided that the above
      9  1.1     riz  * copyright notice and this permission notice appear in all copies.
     10  1.1     riz  *
     11  1.1     riz  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     12  1.1     riz  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     13  1.1     riz  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     14  1.1     riz  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     15  1.1     riz  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     16  1.1     riz  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     17  1.1     riz  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     18  1.1     riz  */
     19  1.1     riz 
     20  1.1     riz #ifndef _DEV_ONEWIRE_ONEWIREREG_H_
     21  1.1     riz #define _DEV_ONEWIRE_ONEWIREREG_H_
     22  1.1     riz 
     23  1.1     riz /*
     24  1.1     riz  * 1-Wire bus protocol definitions.
     25  1.1     riz  */
     26  1.1     riz 
     27  1.1     riz /*
     28  1.1     riz  * 64-bit ROM section.
     29  1.1     riz  */
     30  1.1     riz 
     31  1.1     riz /* Family code */
     32  1.1     riz #define ONEWIRE_ROM_FAMILY(x)		((x) & 0xff)
     33  1.1     riz #define ONEWIRE_ROM_FAMILY_TYPE(x)	((x) & 0x7f)
     34  1.1     riz #define ONEWIRE_ROM_FAMILY_CUSTOM(x)	(((x) >> 7) & 0x1)
     35  1.1     riz 
     36  1.1     riz /* Serial number */
     37  1.4  martin #define ONEWIRE_ROM_SN(x)		(((x) >> 8) & ((uint64_t)0xffffffffffffULL))
     38  1.1     riz 
     39  1.1     riz /* CRC */
     40  1.1     riz #define ONEWIRE_ROM_CRC(x)		(((x) >> 56) & 0xff)
     41  1.1     riz 
     42  1.1     riz /*
     43  1.1     riz  * Command set.
     44  1.1     riz  */
     45  1.1     riz 
     46  1.1     riz /* ROM commands */
     47  1.1     riz #define ONEWIRE_CMD_READ_ROM		0x33
     48  1.1     riz #define ONEWIRE_CMD_SKIP_ROM		0xcc
     49  1.1     riz #define ONEWIRE_CMD_MATCH_ROM		0x55
     50  1.1     riz #define ONEWIRE_CMD_SEARCH_ROM		0xf0
     51  1.1     riz #define ONEWIRE_CMD_OVERDRIVE_SKIP_ROM	0x3c
     52  1.1     riz #define ONEWIRE_CMD_OVERDRIVE_MATCH_ROM	0x69
     53  1.1     riz 
     54  1.1     riz /* Scratchpad commands */
     55  1.1     riz #define ONEWIRE_CMD_READ_SCRATCHPAD	0xaa
     56  1.1     riz #define ONEWIRE_CMD_WRITE_SCRATCHPAD	0x0f
     57  1.1     riz #define ONEWIRE_CMD_COPY_SCRATCHPAD	0x55
     58  1.1     riz 
     59  1.1     riz /* Memory commands */
     60  1.1     riz #define ONEWIRE_CMD_READ_MEMORY		0xf0
     61  1.1     riz #define ONEWIRE_CMD_WRITE_MEMORY	0x0f
     62  1.1     riz #define ONEWIRE_CMD_EXT_READ_MEMORY	0xa5
     63  1.1     riz 
     64  1.1     riz /* Password commands */
     65  1.1     riz #define ONEWIRE_CMD_READ_SUBKEY		0x66
     66  1.1     riz #define ONEWIRE_CMD_WRITE_SUBKEY	0x99
     67  1.1     riz #define ONEWIRE_CMD_WRITE_PASSWORD	0x5a
     68  1.1     riz 
     69  1.1     riz /* Status commands */
     70  1.1     riz #define ONEWIRE_CMD_READ_STATUS		0xaa
     71  1.1     riz #define ONEWIRE_CMD_WRITE_STATUS	0x55
     72  1.1     riz 
     73  1.1     riz #endif	/* !_DEV_ONEWIRE_ONEWIREREG_H_ */
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