Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
Masters/OneWireMaster.cpp@90:c233d1c265ff, 2016-06-17 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Fri Jun 17 15:24:37 2016 -0500
- Revision:
- 90:c233d1c265ff
- Parent:
- 86:2ce08ca58b9e
- Child:
- 104:3f48daed532b
Moved ROM utility functions outside of the OneWireMaster class.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
j3 | 5:ce108eeb878d | 1 | /******************************************************************//** |
j3 | 5:ce108eeb878d | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
j3 | 5:ce108eeb878d | 3 | * |
j3 | 5:ce108eeb878d | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
j3 | 5:ce108eeb878d | 5 | * copy of this software and associated documentation files (the "Software"), |
j3 | 5:ce108eeb878d | 6 | * to deal in the Software without restriction, including without limitation |
j3 | 5:ce108eeb878d | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
j3 | 5:ce108eeb878d | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
j3 | 5:ce108eeb878d | 9 | * Software is furnished to do so, subject to the following conditions: |
j3 | 5:ce108eeb878d | 10 | * |
j3 | 5:ce108eeb878d | 11 | * The above copyright notice and this permission notice shall be included |
j3 | 5:ce108eeb878d | 12 | * in all copies or substantial portions of the Software. |
j3 | 5:ce108eeb878d | 13 | * |
j3 | 5:ce108eeb878d | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
j3 | 5:ce108eeb878d | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
j3 | 5:ce108eeb878d | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
j3 | 5:ce108eeb878d | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
j3 | 5:ce108eeb878d | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
j3 | 5:ce108eeb878d | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
j3 | 5:ce108eeb878d | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
j3 | 5:ce108eeb878d | 21 | * |
j3 | 5:ce108eeb878d | 22 | * Except as contained in this notice, the name of Maxim Integrated |
j3 | 5:ce108eeb878d | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
j3 | 5:ce108eeb878d | 24 | * Products, Inc. Branding Policy. |
j3 | 5:ce108eeb878d | 25 | * |
j3 | 5:ce108eeb878d | 26 | * The mere transfer of this software does not imply any licenses |
j3 | 5:ce108eeb878d | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
j3 | 5:ce108eeb878d | 28 | * trademarks, maskwork rights, or any other form of intellectual |
j3 | 5:ce108eeb878d | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
j3 | 5:ce108eeb878d | 30 | * ownership rights. |
j3 | 5:ce108eeb878d | 31 | **********************************************************************/ |
j3 | 5:ce108eeb878d | 32 | |
j3 | 15:f6cb0d906fb6 | 33 | #include "OneWireMaster.h" |
IanBenzMaxim | 86:2ce08ca58b9e | 34 | #include "Utilities/crc.h" |
IanBenzMaxim | 27:d5aaefa252f1 | 35 | |
IanBenzMaxim | 82:c11090a32471 | 36 | using namespace OneWire::crc; |
j3 | 15:f6cb0d906fb6 | 37 | |
IanBenzMaxim | 90:c233d1c265ff | 38 | namespace OneWire |
IanBenzMaxim | 77:529edb329ee0 | 39 | { |
IanBenzMaxim | 90:c233d1c265ff | 40 | OneWireMaster::CmdResult OneWireMaster::OWWriteBlock(const uint8_t *sendBuf, uint8_t sendLen) |
IanBenzMaxim | 77:529edb329ee0 | 41 | { |
IanBenzMaxim | 90:c233d1c265ff | 42 | CmdResult result; |
IanBenzMaxim | 77:529edb329ee0 | 43 | |
IanBenzMaxim | 90:c233d1c265ff | 44 | for (uint8_t idx = 0; idx < sendLen; idx++) |
IanBenzMaxim | 77:529edb329ee0 | 45 | { |
IanBenzMaxim | 90:c233d1c265ff | 46 | result = OWWriteByte(sendBuf[idx]); |
IanBenzMaxim | 90:c233d1c265ff | 47 | if (result != Success) |
IanBenzMaxim | 90:c233d1c265ff | 48 | { |
IanBenzMaxim | 90:c233d1c265ff | 49 | break; |
IanBenzMaxim | 90:c233d1c265ff | 50 | } |
IanBenzMaxim | 77:529edb329ee0 | 51 | } |
IanBenzMaxim | 77:529edb329ee0 | 52 | |
IanBenzMaxim | 90:c233d1c265ff | 53 | return result; |
IanBenzMaxim | 77:529edb329ee0 | 54 | } |
IanBenzMaxim | 77:529edb329ee0 | 55 | |
IanBenzMaxim | 90:c233d1c265ff | 56 | OneWireMaster::CmdResult OneWireMaster::OWReadBlock(uint8_t *recvBuf, uint8_t recvLen) |
IanBenzMaxim | 77:529edb329ee0 | 57 | { |
IanBenzMaxim | 90:c233d1c265ff | 58 | CmdResult result; |
IanBenzMaxim | 77:529edb329ee0 | 59 | |
IanBenzMaxim | 90:c233d1c265ff | 60 | for (uint8_t idx = 0; idx < recvLen; idx++) |
IanBenzMaxim | 77:529edb329ee0 | 61 | { |
IanBenzMaxim | 90:c233d1c265ff | 62 | result = OWReadByte(recvBuf[idx]); |
IanBenzMaxim | 90:c233d1c265ff | 63 | if (result != Success) |
IanBenzMaxim | 77:529edb329ee0 | 64 | { |
IanBenzMaxim | 77:529edb329ee0 | 65 | break; |
IanBenzMaxim | 77:529edb329ee0 | 66 | } |
IanBenzMaxim | 90:c233d1c265ff | 67 | } |
IanBenzMaxim | 77:529edb329ee0 | 68 | |
IanBenzMaxim | 90:c233d1c265ff | 69 | return result; |
IanBenzMaxim | 77:529edb329ee0 | 70 | } |
IanBenzMaxim | 77:529edb329ee0 | 71 | |
IanBenzMaxim | 90:c233d1c265ff | 72 | OneWireMaster::CmdResult OneWireMaster::OWTriplet(SearchDirection & searchDirection, uint8_t & sbr, uint8_t & tsb) |
IanBenzMaxim | 77:529edb329ee0 | 73 | { |
IanBenzMaxim | 90:c233d1c265ff | 74 | CmdResult result; |
IanBenzMaxim | 90:c233d1c265ff | 75 | result = OWReadBit(sbr); |
IanBenzMaxim | 90:c233d1c265ff | 76 | if (result == Success) |
IanBenzMaxim | 90:c233d1c265ff | 77 | { |
IanBenzMaxim | 90:c233d1c265ff | 78 | result = OWReadBit(tsb); |
IanBenzMaxim | 90:c233d1c265ff | 79 | } |
IanBenzMaxim | 90:c233d1c265ff | 80 | if (result == Success) |
IanBenzMaxim | 90:c233d1c265ff | 81 | { |
IanBenzMaxim | 90:c233d1c265ff | 82 | if (sbr) |
IanBenzMaxim | 90:c233d1c265ff | 83 | { |
IanBenzMaxim | 90:c233d1c265ff | 84 | searchDirection = WriteOne; |
IanBenzMaxim | 90:c233d1c265ff | 85 | } |
IanBenzMaxim | 90:c233d1c265ff | 86 | else if (tsb) |
IanBenzMaxim | 90:c233d1c265ff | 87 | { |
IanBenzMaxim | 90:c233d1c265ff | 88 | searchDirection = WriteZero; |
IanBenzMaxim | 90:c233d1c265ff | 89 | } |
IanBenzMaxim | 90:c233d1c265ff | 90 | // else: use search_direction parameter |
IanBenzMaxim | 90:c233d1c265ff | 91 | |
IanBenzMaxim | 90:c233d1c265ff | 92 | result = OWWriteBit((searchDirection == WriteOne) ? 1 : 0); |
IanBenzMaxim | 90:c233d1c265ff | 93 | } |
IanBenzMaxim | 90:c233d1c265ff | 94 | return result; |
IanBenzMaxim | 77:529edb329ee0 | 95 | } |
IanBenzMaxim | 77:529edb329ee0 | 96 | } |