Mercurial > ~darius > hgwebdir.cgi > stm32temp
annotate 1wire.h @ 85:18b154c447bb
Add note about 1-wire wiring
| author | Daniel O'Connor <darius@dons.net.au> |
|---|---|
| date | Thu, 12 Mar 2015 23:22:11 +1030 |
| parents | cc998b0b2bae |
| children |
| rev | line source |
|---|---|
| 13 | 1 /* |
| 2 * 1 wire header which defines functions and constants | |
| 3 * | |
| 4 * $Id$ | |
| 5 * | |
| 6 * Copyright (c) 2004 | |
| 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 #ifndef PROGMEM | |
| 32 #define PROGMEM | |
| 33 #endif | |
| 34 | |
| 35 void OWInit(void); | |
| 36 uint8_t OWTouchReset(void); | |
| 37 void OWWriteBit(uint8_t bit); | |
| 38 uint8_t OWReadBit(void); | |
| 39 void OWWriteByte(uint8_t data); | |
| 40 uint8_t OWReadByte(void); | |
| 41 uint8_t OWTouchByte(uint8_t data); | |
| 42 void OWBlock(uint8_t *data, int len); | |
| 43 uint8_t OWFirst(uint8_t *ROM, uint8_t do_reset, uint8_t alarm_only); | |
| 44 uint8_t OWNext(uint8_t *ROM, uint8_t do_reset, uint8_t alarm_only); | |
| 45 void OWCRC(uint8_t x, uint8_t *crc); | |
|
68
cc998b0b2bae
Handle missing modules in OWGetTemp.
Daniel O'Connor <darius@dons.net.au>
parents:
13
diff
changeset
|
46 uint8_t OWSendCmd(uint8_t *ROM, uint8_t cmd); |
| 13 | 47 uint8_t OWProgROM(uint8_t *ROM, uint8_t start, uint8_t len, uint8_t *data, uint8_t exact, uint8_t status); |
| 48 int16_t OWGetTemp(uint8_t *ROM); | |
| 49 const PROGMEM char *OWTempStatusStr(int16_t val, uint8_t shrt); | |
| 50 extern const PROGMEM char *OWProgROM_Status[]; | |
| 51 | |
| 52 | |
| 53 /* Return codes for OWFirst()/OWNext() */ | |
| 54 #define OW_BADWIRE -3 | |
| 55 #define OW_BADCRC -2 | |
| 56 #define OW_NOPRESENCE -1 | |
| 57 #define OW_NOMODULES 0 | |
| 58 #define OW_FOUND 1 | |
| 59 | |
| 60 /* General 1 wire commands */ | |
| 61 #define OW_OVRDRV_SKIP_CMD 0x3c | |
| 62 #define OW_SEARCH_ALRM_CMD 0xec | |
| 63 #define OW_SEARCH_ROM_CMD 0xf0 | |
| 64 #define OW_READ_ROM_CMD 0x33 | |
| 65 #define OW_MATCH_ROM_CMD 0x55 | |
| 66 #define OW_SKIP_ROM_CMD 0xcc | |
| 67 | |
| 68 /* DS1820 commands */ | |
| 69 #define OW_CONVERTT_CMD 0x44 | |
| 70 #define OW_RD_SCR_CMD 0xbe | |
| 71 #define OW_WR_SCR_CMD 0x4e | |
| 72 #define OW_CPY_SCR_CMD 0x48 | |
| 73 #define OW_RECALL_CMD 0xb8 | |
| 74 #define OW_RD_PSU_CMD 0xb4 | |
| 75 | |
| 76 /* DS2502 commands */ | |
| 77 #define OW_READ_MEMORY 0xf0 | |
| 78 #define OW_READ_STATUS 0xaa | |
| 79 #define OW_GEN_CRC 0xc3 | |
| 80 #define OW_WRITE_MEMORY 0x0f | |
| 81 #define OW_WRITE_STATUS 0x55 | |
| 82 | |
| 83 /* Family codes */ | |
| 84 #define OW_FAMILY_ROM 0x09 | |
| 85 #define OW_FAMILY_TEMP 0x10 | |
| 86 | |
| 87 /* Return codes for OWGetTemp */ | |
| 88 #define OW_TEMP_BADVAL -6000 | |
| 89 #define OW_TEMP_WRONG_FAM -6001 | |
| 90 #define OW_TEMP_CRC_ERR -6002 | |
| 91 #define OW_TEMP_NO_ROM -6003 | |
| 92 | |
| 93 /* Helpers for OWGetTemp's number system */ | |
| 94 #define GETWHOLE(x) ((x) / 100) | |
| 95 #define GETFRAC(x) abs((x) - (GETWHOLE(x) * 100)) |