Mercurial > ~darius > hgwebdir.cgi > avr
annotate 1wire.h @ 8:f9a085a0ba93
Change the 1 wire routines to mostly C with assembly delay routines
for ease of portability.
| author | darius |
|---|---|
| date | Mon, 12 Jul 2004 17:50:42 +0930 |
| parents | ffeab3c04e83 |
| children | eb1faf51968e |
| rev | line source |
|---|---|
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f9a085a0ba93
Change the 1 wire routines to mostly C with assembly delay routines
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1 /* |
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f9a085a0ba93
Change the 1 wire routines to mostly C with assembly delay routines
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2 * 1 wire header code |
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f9a085a0ba93
Change the 1 wire routines to mostly C with assembly delay routines
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3 * |
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f9a085a0ba93
Change the 1 wire routines to mostly C with assembly delay routines
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4 * $Id$ |
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f9a085a0ba93
Change the 1 wire routines to mostly C with assembly delay routines
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5 * |
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f9a085a0ba93
Change the 1 wire routines to mostly C with assembly delay routines
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6 * Copyright (c) 2004 |
| 0 | 7 * Daniel O'Connor <darius@dons.net.au>. All rights reserved. |
| 8 * | |
| 9 * Redistribution and use in source and binary forms, with or without | |
| 10 * modification, are permitted provided that the following conditions | |
| 11 * are met: | |
| 12 * 1. Redistributions of source code must retain the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer. | |
| 14 * 2. Redistributions in binary form must reproduce the above copyright | |
| 15 * notice, this list of conditions and the following disclaimer in the | |
| 16 * documentation and/or other materials provided with the distribution. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
| 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 21 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 28 * SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 int OWTouchReset(void); | |
| 32 void OWWriteBit(int bit); | |
| 33 int OWReadBit(void); | |
| 34 void OWWriteByte(uint8_t data); | |
| 35 int OWReadByte(void); | |
| 36 int OWTouchByte(uint8_t data); | |
| 37 void OWBlock(uint8_t *data, int len); | |
| 38 int OWFirst(uint8_t *ROM, uint8_t do_reset, uint8_t alarm_only); | |
| 39 int OWNext(uint8_t *ROM, uint8_t do_reset, uint8_t alarm_only); | |
| 40 void OWCRC(uint8_t x, uint8_t *crc); | |
| 41 void OWSendCmd(uint8_t *ROM, uint8_t cmd); | |
| 42 | |
| 43 #define OWIREOUTPORT PORTC | |
| 44 #define OWIREOUTPIN 0 | |
| 45 | |
| 46 #define OWIREINPORT PINC | |
| 47 #define OWIREDDR DDRC | |
| 48 #define OWIREINPIN OWIREOUTPIN | |
| 49 | |
| 50 /* General 1 wire commands */ | |
| 51 #define OW_OVRDRV_SKIP_CMD 0x3c | |
| 52 #define OW_SEARCH_ALRM_CMD 0xec | |
| 53 #define OW_SEARCH_ROM_CMD 0xf0 | |
| 54 #define OW_READ_ROM_CMD 0x33 | |
| 55 #define OW_MATCH_ROM_CMD 0x55 | |
| 56 #define OW_SKIP_ROM_CMD 0xcc | |
| 57 | |
| 58 /* DS1820 commands */ | |
| 59 #define OW_CONVERTT_CMD 0x44 | |
| 60 #define OW_RD_SCR_CMD 0xbe | |
| 61 #define OW_WR_SCR_CMD 0x4e | |
| 62 #define OW_CPY_SCR_CMD 0x48 | |
| 63 #define OW_RECALL_CMD 0xb8 | |
| 64 #define OW_RD_PSU_CMD 0xb4 | |
| 65 | |
| 66 /* Family codes */ | |
| 67 #define OW_FAMILY_ROM 0x09 | |
| 68 #define OW_FAMILY_TEMP 0x10 |