Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
Masters/DS248x/DS2482EightChannel/DS2482EightChannel.cpp@104:3f48daed532b, 2016-08-02 (annotated)
- Committer:
- j3
- Date:
- Tue Aug 02 18:21:09 2016 +0000
- Revision:
- 104:3f48daed532b
- Parent:
- 92:aa40c49b8563
- Child:
- 139:f0e0a7976846
removed "OneWire" from absolute paths
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
j3 | 92:aa40c49b8563 | 1 | /********************************************************************** |
j3 | 92:aa40c49b8563 | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
j3 | 92:aa40c49b8563 | 3 | * |
j3 | 92:aa40c49b8563 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
j3 | 92:aa40c49b8563 | 5 | * copy of this software and associated documentation files (the "Software"), |
j3 | 92:aa40c49b8563 | 6 | * to deal in the Software without restriction, including without limitation |
j3 | 92:aa40c49b8563 | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
j3 | 92:aa40c49b8563 | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
j3 | 92:aa40c49b8563 | 9 | * Software is furnished to do so, subject to the following conditions: |
j3 | 92:aa40c49b8563 | 10 | * |
j3 | 92:aa40c49b8563 | 11 | * The above copyright notice and this permission notice shall be included |
j3 | 92:aa40c49b8563 | 12 | * in all copies or substantial portions of the Software. |
j3 | 92:aa40c49b8563 | 13 | * |
j3 | 92:aa40c49b8563 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
j3 | 92:aa40c49b8563 | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
j3 | 92:aa40c49b8563 | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
j3 | 92:aa40c49b8563 | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
j3 | 92:aa40c49b8563 | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
j3 | 92:aa40c49b8563 | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
j3 | 92:aa40c49b8563 | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
j3 | 92:aa40c49b8563 | 21 | * |
j3 | 92:aa40c49b8563 | 22 | * Except as contained in this notice, the name of Maxim Integrated |
j3 | 92:aa40c49b8563 | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
j3 | 92:aa40c49b8563 | 24 | * Products, Inc. Branding Policy. |
j3 | 92:aa40c49b8563 | 25 | * |
j3 | 92:aa40c49b8563 | 26 | * The mere transfer of this software does not imply any licenses |
j3 | 92:aa40c49b8563 | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
j3 | 92:aa40c49b8563 | 28 | * trademarks, maskwork rights, or any other form of intellectual |
j3 | 92:aa40c49b8563 | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
j3 | 92:aa40c49b8563 | 30 | * ownership rights. |
j3 | 92:aa40c49b8563 | 31 | **********************************************************************/ |
j3 | 92:aa40c49b8563 | 32 | |
j3 | 92:aa40c49b8563 | 33 | |
j3 | 104:3f48daed532b | 34 | #include "Masters/DS248x/DS2482EightChannel/DS2482EightChannel.h" |
j3 | 92:aa40c49b8563 | 35 | |
j3 | 92:aa40c49b8563 | 36 | using OneWire::OneWireMaster; |
j3 | 92:aa40c49b8563 | 37 | using OneWire::DS2482EightChannel; |
j3 | 92:aa40c49b8563 | 38 | |
j3 | 92:aa40c49b8563 | 39 | |
j3 | 92:aa40c49b8563 | 40 | //********************************************************************* |
j3 | 92:aa40c49b8563 | 41 | DS2482EightChannel::DS2482EightChannel(mbed::I2C & i2c_bus, uint8_t adrs) |
j3 | 92:aa40c49b8563 | 42 | :DS248x(i2c_bus, adrs) |
j3 | 92:aa40c49b8563 | 43 | { |
j3 | 92:aa40c49b8563 | 44 | } |
j3 | 92:aa40c49b8563 | 45 | |
j3 | 92:aa40c49b8563 | 46 | |
j3 | 92:aa40c49b8563 | 47 | //********************************************************************* |
j3 | 92:aa40c49b8563 | 48 | DS2482EightChannel::DS2482EightChannel(mbed::I2C & i2c_bus, I2CAddress adrs) |
j3 | 92:aa40c49b8563 | 49 | :DS248x(i2c_bus, adrs) |
j3 | 92:aa40c49b8563 | 50 | { |
j3 | 92:aa40c49b8563 | 51 | } |
j3 | 92:aa40c49b8563 | 52 | |
j3 | 92:aa40c49b8563 | 53 | |
j3 | 92:aa40c49b8563 | 54 | //********************************************************************* |
j3 | 92:aa40c49b8563 | 55 | OneWireMaster::CmdResult DS2482EightChannel::selectChannel(uint8_t channel) |
j3 | 92:aa40c49b8563 | 56 | { |
j3 | 92:aa40c49b8563 | 57 | OneWireMaster::CmdResult result; |
j3 | 92:aa40c49b8563 | 58 | uint8_t ch, ch_read; |
j3 | 92:aa40c49b8563 | 59 | |
j3 | 92:aa40c49b8563 | 60 | // Channel Select (Case A) |
j3 | 92:aa40c49b8563 | 61 | // S AD,0 [A] CHSL [A] CC [A] Sr AD,1 [A] [RR] A\ P |
j3 | 92:aa40c49b8563 | 62 | // [] indicates from slave |
j3 | 92:aa40c49b8563 | 63 | // CC channel value |
j3 | 92:aa40c49b8563 | 64 | // RR channel read back |
j3 | 92:aa40c49b8563 | 65 | |
j3 | 92:aa40c49b8563 | 66 | switch (channel) |
j3 | 92:aa40c49b8563 | 67 | { |
j3 | 92:aa40c49b8563 | 68 | default: |
j3 | 92:aa40c49b8563 | 69 | case 0: |
j3 | 92:aa40c49b8563 | 70 | ch = 0xF0; |
j3 | 92:aa40c49b8563 | 71 | ch_read = 0xB8; |
j3 | 92:aa40c49b8563 | 72 | break; |
j3 | 92:aa40c49b8563 | 73 | case 1: |
j3 | 92:aa40c49b8563 | 74 | ch = 0xE1; |
j3 | 92:aa40c49b8563 | 75 | ch_read = 0xB1; |
j3 | 92:aa40c49b8563 | 76 | break; |
j3 | 92:aa40c49b8563 | 77 | case 2: |
j3 | 92:aa40c49b8563 | 78 | ch = 0xD2; |
j3 | 92:aa40c49b8563 | 79 | ch_read = 0xAA; |
j3 | 92:aa40c49b8563 | 80 | break; |
j3 | 92:aa40c49b8563 | 81 | case 3: |
j3 | 92:aa40c49b8563 | 82 | ch = 0xC3; |
j3 | 92:aa40c49b8563 | 83 | ch_read = 0xA3; |
j3 | 92:aa40c49b8563 | 84 | break; |
j3 | 92:aa40c49b8563 | 85 | case 4: |
j3 | 92:aa40c49b8563 | 86 | ch = 0xB4; |
j3 | 92:aa40c49b8563 | 87 | ch_read = 0x9C; |
j3 | 92:aa40c49b8563 | 88 | break; |
j3 | 92:aa40c49b8563 | 89 | case 5: |
j3 | 92:aa40c49b8563 | 90 | ch = 0xA5; |
j3 | 92:aa40c49b8563 | 91 | ch_read = 0x95; |
j3 | 92:aa40c49b8563 | 92 | break; |
j3 | 92:aa40c49b8563 | 93 | case 6: |
j3 | 92:aa40c49b8563 | 94 | ch = 0x96; |
j3 | 92:aa40c49b8563 | 95 | ch_read = 0x8E; |
j3 | 92:aa40c49b8563 | 96 | break; |
j3 | 92:aa40c49b8563 | 97 | case 7: |
j3 | 92:aa40c49b8563 | 98 | ch = 0x87; |
j3 | 92:aa40c49b8563 | 99 | ch_read = 0x87; |
j3 | 92:aa40c49b8563 | 100 | break; |
j3 | 92:aa40c49b8563 | 101 | }; |
j3 | 92:aa40c49b8563 | 102 | |
j3 | 92:aa40c49b8563 | 103 | result = sendCommand(ChannelSelectCmd, ch); |
j3 | 92:aa40c49b8563 | 104 | if (result == OneWireMaster::Success) |
j3 | 92:aa40c49b8563 | 105 | { |
j3 | 92:aa40c49b8563 | 106 | result = readRegister(ChannelSelectReg, ch, true); |
j3 | 92:aa40c49b8563 | 107 | if (result == OneWireMaster::Success) |
j3 | 92:aa40c49b8563 | 108 | { |
j3 | 92:aa40c49b8563 | 109 | // check for failure due to incorrect read back of channel |
j3 | 92:aa40c49b8563 | 110 | if (ch != ch_read) |
j3 | 92:aa40c49b8563 | 111 | { |
j3 | 92:aa40c49b8563 | 112 | result = OneWireMaster::OperationFailure; |
j3 | 92:aa40c49b8563 | 113 | } |
j3 | 92:aa40c49b8563 | 114 | } |
j3 | 92:aa40c49b8563 | 115 | } |
j3 | 92:aa40c49b8563 | 116 | |
j3 | 92:aa40c49b8563 | 117 | return result; |
j3 | 92:aa40c49b8563 | 118 | } |