Mercurial > ~darius > hgwebdir.cgi > tempctrl
annotate 1wire.h @ 35:fed32b382de2
Tidy up, hide details behind macros to make it more obvious what we
talk to do do things.
Convert constants to my preferred format.
| author | darius |
|---|---|
| date | Tue, 23 Oct 2007 10:54:01 +0930 |
| parents | 0aa6bf4b98ae |
| children | 5898fba6593c |
| rev | line source |
|---|---|
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Change the 1 wire routines to mostly C with assembly delay routines
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1 /* |
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2 * 1 wire header which defines functions and constants |
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3 * |
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4 * $Id$ |
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5 * |
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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 | |
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31 void OWInit(void); |
| 12 | 32 uint8_t OWTouchReset(void); |
| 33 void OWWriteBit(uint8_t bit); | |
| 34 uint8_t OWReadBit(void); | |
| 0 | 35 void OWWriteByte(uint8_t data); |
| 12 | 36 uint8_t OWReadByte(void); |
| 37 uint8_t OWTouchByte(uint8_t data); | |
| 0 | 38 void OWBlock(uint8_t *data, int len); |
| 12 | 39 uint8_t OWFirst(uint8_t *ROM, uint8_t do_reset, uint8_t alarm_only); |
| 40 uint8_t OWNext(uint8_t *ROM, uint8_t do_reset, uint8_t alarm_only); | |
| 0 | 41 void OWCRC(uint8_t x, uint8_t *crc); |
| 42 void OWSendCmd(uint8_t *ROM, uint8_t cmd); | |
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43 uint8_t OWProgROM(uint8_t *ROM, uint8_t start, uint8_t len, uint8_t *data, uint8_t exact, uint8_t status); |
| 0 | 44 |
| 10 | 45 /* Return codes for OWFirst()/OWNext() */ |
| 46 #define OW_BADWIRE -3 | |
| 47 #define OW_BADCRC -2 | |
| 48 #define OW_NOPRESENCE -1 | |
| 49 #define OW_NOMODULES 0 | |
| 50 #define OW_FOUND 1 | |
| 51 | |
| 0 | 52 /* General 1 wire commands */ |
| 53 #define OW_OVRDRV_SKIP_CMD 0x3c | |
| 54 #define OW_SEARCH_ALRM_CMD 0xec | |
| 55 #define OW_SEARCH_ROM_CMD 0xf0 | |
| 56 #define OW_READ_ROM_CMD 0x33 | |
| 57 #define OW_MATCH_ROM_CMD 0x55 | |
| 58 #define OW_SKIP_ROM_CMD 0xcc | |
| 59 | |
| 60 /* DS1820 commands */ | |
| 61 #define OW_CONVERTT_CMD 0x44 | |
| 62 #define OW_RD_SCR_CMD 0xbe | |
| 63 #define OW_WR_SCR_CMD 0x4e | |
| 64 #define OW_CPY_SCR_CMD 0x48 | |
| 65 #define OW_RECALL_CMD 0xb8 | |
| 66 #define OW_RD_PSU_CMD 0xb4 | |
| 67 | |
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68 /* DS2502 commands */ |
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69 #define OW_READ_MEMORY 0xf0 |
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70 #define OW_READ_STATUS 0xaa |
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71 #define OW_GEN_CRC 0xc3 |
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72 #define OW_WRITE_MEMORY 0x0f |
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73 #define OW_WRITE_STATUS 0x55 |
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74 |
| 0 | 75 /* Family codes */ |
| 76 #define OW_FAMILY_ROM 0x09 | |
| 77 #define OW_FAMILY_TEMP 0x10 |