Device interface library for multiple platforms including Mbed.
Dependents: DeepCover Embedded Security in IoT MaximInterface MAXREFDES155#
Maxim Interface is a library framework focused on providing flexible and expressive hardware interfaces. Both communication interfaces such as I2C and 1-Wire and device interfaces such as DS18B20 are supported. Modern C++ concepts are used extensively while keeping compatibility with C++98/C++03 and requiring no external dependencies. The embedded-friendly design does not depend on exceptions or RTTI.
The full version of the project is hosted on GitLab: https://gitlab.com/iabenz/MaximInterface
MaximInterfaceDevices/DS2465.cpp@7:9cd16581b578, 2019-07-22 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Mon Jul 22 11:44:07 2019 -0500
- Revision:
- 7:9cd16581b578
- Child:
- 8:5ea891c7d1a1
Updated to version 1.9.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
IanBenzMaxim | 7:9cd16581b578 | 1 | /******************************************************************************* |
IanBenzMaxim | 7:9cd16581b578 | 2 | * Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved. |
IanBenzMaxim | 7:9cd16581b578 | 3 | * |
IanBenzMaxim | 7:9cd16581b578 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
IanBenzMaxim | 7:9cd16581b578 | 5 | * copy of this software and associated documentation files (the "Software"), |
IanBenzMaxim | 7:9cd16581b578 | 6 | * to deal in the Software without restriction, including without limitation |
IanBenzMaxim | 7:9cd16581b578 | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
IanBenzMaxim | 7:9cd16581b578 | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
IanBenzMaxim | 7:9cd16581b578 | 9 | * Software is furnished to do so, subject to the following conditions: |
IanBenzMaxim | 7:9cd16581b578 | 10 | * |
IanBenzMaxim | 7:9cd16581b578 | 11 | * The above copyright notice and this permission notice shall be included |
IanBenzMaxim | 7:9cd16581b578 | 12 | * in all copies or substantial portions of the Software. |
IanBenzMaxim | 7:9cd16581b578 | 13 | * |
IanBenzMaxim | 7:9cd16581b578 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
IanBenzMaxim | 7:9cd16581b578 | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
IanBenzMaxim | 7:9cd16581b578 | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
IanBenzMaxim | 7:9cd16581b578 | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
IanBenzMaxim | 7:9cd16581b578 | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
IanBenzMaxim | 7:9cd16581b578 | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
IanBenzMaxim | 7:9cd16581b578 | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
IanBenzMaxim | 7:9cd16581b578 | 21 | * |
IanBenzMaxim | 7:9cd16581b578 | 22 | * Except as contained in this notice, the name of Maxim Integrated |
IanBenzMaxim | 7:9cd16581b578 | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
IanBenzMaxim | 7:9cd16581b578 | 24 | * Products, Inc. Branding Policy. |
IanBenzMaxim | 7:9cd16581b578 | 25 | * |
IanBenzMaxim | 7:9cd16581b578 | 26 | * The mere transfer of this software does not imply any licenses |
IanBenzMaxim | 7:9cd16581b578 | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
IanBenzMaxim | 7:9cd16581b578 | 28 | * trademarks, maskwork rights, or any other form of intellectual |
IanBenzMaxim | 7:9cd16581b578 | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
IanBenzMaxim | 7:9cd16581b578 | 30 | * ownership rights. |
IanBenzMaxim | 7:9cd16581b578 | 31 | *******************************************************************************/ |
IanBenzMaxim | 7:9cd16581b578 | 32 | |
IanBenzMaxim | 7:9cd16581b578 | 33 | #include <MaximInterfaceCore/Error.hpp> |
IanBenzMaxim | 7:9cd16581b578 | 34 | #include "DS2465.hpp" |
IanBenzMaxim | 7:9cd16581b578 | 35 | |
IanBenzMaxim | 7:9cd16581b578 | 36 | namespace MaximInterfaceDevices { |
IanBenzMaxim | 7:9cd16581b578 | 37 | |
IanBenzMaxim | 7:9cd16581b578 | 38 | using namespace Core; |
IanBenzMaxim | 7:9cd16581b578 | 39 | |
IanBenzMaxim | 7:9cd16581b578 | 40 | /// Delay required after writing an EEPROM segment. |
IanBenzMaxim | 7:9cd16581b578 | 41 | static const int eepromSegmentWriteDelayMs = 10; |
IanBenzMaxim | 7:9cd16581b578 | 42 | /// Delay required after writing an EEPROM page such as the secret memory. |
IanBenzMaxim | 7:9cd16581b578 | 43 | static const int eepromPageWriteDelayMs = 8 * eepromSegmentWriteDelayMs; |
IanBenzMaxim | 7:9cd16581b578 | 44 | /// Delay required for a SHA computation to complete. |
IanBenzMaxim | 7:9cd16581b578 | 45 | static const int shaComputationDelayMs = 2; |
IanBenzMaxim | 7:9cd16581b578 | 46 | |
IanBenzMaxim | 7:9cd16581b578 | 47 | static const uint_least8_t scratchpad = 0x00; |
IanBenzMaxim | 7:9cd16581b578 | 48 | static const uint_least8_t commandReg = 0x60; |
IanBenzMaxim | 7:9cd16581b578 | 49 | |
IanBenzMaxim | 7:9cd16581b578 | 50 | static const uint_least8_t owTransmitBlockCmd = 0x69; |
IanBenzMaxim | 7:9cd16581b578 | 51 | |
IanBenzMaxim | 7:9cd16581b578 | 52 | /// DS2465 Status bits. |
IanBenzMaxim | 7:9cd16581b578 | 53 | enum StatusBit { |
IanBenzMaxim | 7:9cd16581b578 | 54 | Status_1WB = 0x01, |
IanBenzMaxim | 7:9cd16581b578 | 55 | Status_PPD = 0x02, |
IanBenzMaxim | 7:9cd16581b578 | 56 | Status_SD = 0x04, |
IanBenzMaxim | 7:9cd16581b578 | 57 | Status_LL = 0x08, |
IanBenzMaxim | 7:9cd16581b578 | 58 | Status_RST = 0x10, |
IanBenzMaxim | 7:9cd16581b578 | 59 | Status_SBR = 0x20, |
IanBenzMaxim | 7:9cd16581b578 | 60 | Status_TSB = 0x40, |
IanBenzMaxim | 7:9cd16581b578 | 61 | Status_DIR = 0x80 |
IanBenzMaxim | 7:9cd16581b578 | 62 | }; |
IanBenzMaxim | 7:9cd16581b578 | 63 | |
IanBenzMaxim | 7:9cd16581b578 | 64 | static const int maxBlockSize = 63; |
IanBenzMaxim | 7:9cd16581b578 | 65 | |
IanBenzMaxim | 7:9cd16581b578 | 66 | const int DS2465::memoryPages; |
IanBenzMaxim | 7:9cd16581b578 | 67 | const int DS2465::segmentsPerPage; |
IanBenzMaxim | 7:9cd16581b578 | 68 | |
IanBenzMaxim | 7:9cd16581b578 | 69 | error_code DS2465::initialize(Config config) { |
IanBenzMaxim | 7:9cd16581b578 | 70 | // reset DS2465 |
IanBenzMaxim | 7:9cd16581b578 | 71 | error_code result = resetDevice(); |
IanBenzMaxim | 7:9cd16581b578 | 72 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 73 | // write the default configuration setup |
IanBenzMaxim | 7:9cd16581b578 | 74 | result = writeConfig(config); |
IanBenzMaxim | 7:9cd16581b578 | 75 | } |
IanBenzMaxim | 7:9cd16581b578 | 76 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 77 | } |
IanBenzMaxim | 7:9cd16581b578 | 78 | |
IanBenzMaxim | 7:9cd16581b578 | 79 | error_code DS2465::computeNextMasterSecret(bool swap, int pageNum, |
IanBenzMaxim | 7:9cd16581b578 | 80 | PageRegion region) { |
IanBenzMaxim | 7:9cd16581b578 | 81 | error_code result = make_error_code(ArgumentOutOfRangeError); |
IanBenzMaxim | 7:9cd16581b578 | 82 | if (pageNum >= 0) { |
IanBenzMaxim | 7:9cd16581b578 | 83 | const uint_least8_t command[] = { |
IanBenzMaxim | 7:9cd16581b578 | 84 | 0x1E, static_cast<uint_least8_t>(swap ? (0xC8 | (pageNum << 4) | region) |
IanBenzMaxim | 7:9cd16581b578 | 85 | : 0xBF)}; |
IanBenzMaxim | 7:9cd16581b578 | 86 | result = writeMemory(commandReg, command); |
IanBenzMaxim | 7:9cd16581b578 | 87 | } |
IanBenzMaxim | 7:9cd16581b578 | 88 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 89 | } |
IanBenzMaxim | 7:9cd16581b578 | 90 | |
IanBenzMaxim | 7:9cd16581b578 | 91 | error_code DS2465::computeWriteMac(bool regwrite, bool swap, int pageNum, |
IanBenzMaxim | 7:9cd16581b578 | 92 | int segmentNum) const { |
IanBenzMaxim | 7:9cd16581b578 | 93 | error_code result = make_error_code(ArgumentOutOfRangeError); |
IanBenzMaxim | 7:9cd16581b578 | 94 | if (pageNum >= 0 && segmentNum >= 0) { |
IanBenzMaxim | 7:9cd16581b578 | 95 | const uint_least8_t command[] = { |
IanBenzMaxim | 7:9cd16581b578 | 96 | 0x2D, static_cast<uint_least8_t>((regwrite << 7) | (swap << 6) | |
IanBenzMaxim | 7:9cd16581b578 | 97 | (pageNum << 4) | segmentNum)}; |
IanBenzMaxim | 7:9cd16581b578 | 98 | result = writeMemory(commandReg, command); |
IanBenzMaxim | 7:9cd16581b578 | 99 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 100 | sleep->invoke(shaComputationDelayMs); |
IanBenzMaxim | 7:9cd16581b578 | 101 | } |
IanBenzMaxim | 7:9cd16581b578 | 102 | } |
IanBenzMaxim | 7:9cd16581b578 | 103 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 104 | } |
IanBenzMaxim | 7:9cd16581b578 | 105 | |
IanBenzMaxim | 7:9cd16581b578 | 106 | error_code DS2465::computeAuthMac(bool swap, int pageNum, |
IanBenzMaxim | 7:9cd16581b578 | 107 | PageRegion region) const { |
IanBenzMaxim | 7:9cd16581b578 | 108 | error_code result = make_error_code(ArgumentOutOfRangeError); |
IanBenzMaxim | 7:9cd16581b578 | 109 | if (pageNum >= 0) { |
IanBenzMaxim | 7:9cd16581b578 | 110 | const uint_least8_t command[] = { |
IanBenzMaxim | 7:9cd16581b578 | 111 | 0x3C, static_cast<uint_least8_t>(swap ? (0xC8 | (pageNum << 4) | region) |
IanBenzMaxim | 7:9cd16581b578 | 112 | : 0xBF)}; |
IanBenzMaxim | 7:9cd16581b578 | 113 | result = writeMemory(commandReg, command); |
IanBenzMaxim | 7:9cd16581b578 | 114 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 115 | sleep->invoke(shaComputationDelayMs * 2); |
IanBenzMaxim | 7:9cd16581b578 | 116 | } |
IanBenzMaxim | 7:9cd16581b578 | 117 | } |
IanBenzMaxim | 7:9cd16581b578 | 118 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 119 | } |
IanBenzMaxim | 7:9cd16581b578 | 120 | |
IanBenzMaxim | 7:9cd16581b578 | 121 | error_code DS2465::computeSlaveSecret(bool swap, int pageNum, |
IanBenzMaxim | 7:9cd16581b578 | 122 | PageRegion region) { |
IanBenzMaxim | 7:9cd16581b578 | 123 | error_code result = make_error_code(ArgumentOutOfRangeError); |
IanBenzMaxim | 7:9cd16581b578 | 124 | if (pageNum >= 0) { |
IanBenzMaxim | 7:9cd16581b578 | 125 | const uint_least8_t command[] = { |
IanBenzMaxim | 7:9cd16581b578 | 126 | 0x4B, static_cast<uint_least8_t>(swap ? (0xC8 | (pageNum << 4) | region) |
IanBenzMaxim | 7:9cd16581b578 | 127 | : 0xBF)}; |
IanBenzMaxim | 7:9cd16581b578 | 128 | result = writeMemory(commandReg, command); |
IanBenzMaxim | 7:9cd16581b578 | 129 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 130 | sleep->invoke(shaComputationDelayMs * 2); |
IanBenzMaxim | 7:9cd16581b578 | 131 | } |
IanBenzMaxim | 7:9cd16581b578 | 132 | } |
IanBenzMaxim | 7:9cd16581b578 | 133 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 134 | } |
IanBenzMaxim | 7:9cd16581b578 | 135 | |
IanBenzMaxim | 7:9cd16581b578 | 136 | error_code DS2465::readPage(int pageNum, Page::span data) const { |
IanBenzMaxim | 7:9cd16581b578 | 137 | uint_least8_t addr; |
IanBenzMaxim | 7:9cd16581b578 | 138 | switch (pageNum) { |
IanBenzMaxim | 7:9cd16581b578 | 139 | case 0: |
IanBenzMaxim | 7:9cd16581b578 | 140 | addr = 0x80; |
IanBenzMaxim | 7:9cd16581b578 | 141 | break; |
IanBenzMaxim | 7:9cd16581b578 | 142 | case 1: |
IanBenzMaxim | 7:9cd16581b578 | 143 | addr = 0xA0; |
IanBenzMaxim | 7:9cd16581b578 | 144 | break; |
IanBenzMaxim | 7:9cd16581b578 | 145 | default: |
IanBenzMaxim | 7:9cd16581b578 | 146 | return make_error_code(ArgumentOutOfRangeError); |
IanBenzMaxim | 7:9cd16581b578 | 147 | } |
IanBenzMaxim | 7:9cd16581b578 | 148 | return readMemory(addr, data); |
IanBenzMaxim | 7:9cd16581b578 | 149 | } |
IanBenzMaxim | 7:9cd16581b578 | 150 | |
IanBenzMaxim | 7:9cd16581b578 | 151 | error_code DS2465::writePage(int pageNum, Page::const_span data) { |
IanBenzMaxim | 7:9cd16581b578 | 152 | error_code result = writeMemory(scratchpad, data); |
IanBenzMaxim | 7:9cd16581b578 | 153 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 154 | result = copyScratchpad(false, pageNum, false, 0); |
IanBenzMaxim | 7:9cd16581b578 | 155 | } |
IanBenzMaxim | 7:9cd16581b578 | 156 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 157 | sleep->invoke(eepromPageWriteDelayMs); |
IanBenzMaxim | 7:9cd16581b578 | 158 | } |
IanBenzMaxim | 7:9cd16581b578 | 159 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 160 | } |
IanBenzMaxim | 7:9cd16581b578 | 161 | |
IanBenzMaxim | 7:9cd16581b578 | 162 | error_code DS2465::writeSegment(int pageNum, int segmentNum, |
IanBenzMaxim | 7:9cd16581b578 | 163 | Segment::const_span data) { |
IanBenzMaxim | 7:9cd16581b578 | 164 | error_code result = writeMemory(scratchpad, data); |
IanBenzMaxim | 7:9cd16581b578 | 165 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 166 | result = copyScratchpad(false, pageNum, true, segmentNum); |
IanBenzMaxim | 7:9cd16581b578 | 167 | } |
IanBenzMaxim | 7:9cd16581b578 | 168 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 169 | sleep->invoke(eepromSegmentWriteDelayMs); |
IanBenzMaxim | 7:9cd16581b578 | 170 | } |
IanBenzMaxim | 7:9cd16581b578 | 171 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 172 | } |
IanBenzMaxim | 7:9cd16581b578 | 173 | |
IanBenzMaxim | 7:9cd16581b578 | 174 | error_code DS2465::writeMasterSecret(Page::const_span masterSecret) { |
IanBenzMaxim | 7:9cd16581b578 | 175 | error_code result = writeMemory(scratchpad, masterSecret); |
IanBenzMaxim | 7:9cd16581b578 | 176 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 177 | result = copyScratchpad(true, 0, false, 0); |
IanBenzMaxim | 7:9cd16581b578 | 178 | } |
IanBenzMaxim | 7:9cd16581b578 | 179 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 180 | sleep->invoke(eepromPageWriteDelayMs); |
IanBenzMaxim | 7:9cd16581b578 | 181 | } |
IanBenzMaxim | 7:9cd16581b578 | 182 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 183 | } |
IanBenzMaxim | 7:9cd16581b578 | 184 | |
IanBenzMaxim | 7:9cd16581b578 | 185 | error_code DS2465::copyScratchpad(bool destSecret, int pageNum, bool notFull, |
IanBenzMaxim | 7:9cd16581b578 | 186 | int segmentNum) { |
IanBenzMaxim | 7:9cd16581b578 | 187 | error_code result = make_error_code(ArgumentOutOfRangeError); |
IanBenzMaxim | 7:9cd16581b578 | 188 | if (pageNum >= 0 && segmentNum >= 0) { |
IanBenzMaxim | 7:9cd16581b578 | 189 | const uint_least8_t command[] = { |
IanBenzMaxim | 7:9cd16581b578 | 190 | 0x5A, |
IanBenzMaxim | 7:9cd16581b578 | 191 | static_cast<uint_least8_t>(destSecret ? 0 |
IanBenzMaxim | 7:9cd16581b578 | 192 | : (0x80 | (pageNum << 4) | |
IanBenzMaxim | 7:9cd16581b578 | 193 | (notFull << 3) | segmentNum))}; |
IanBenzMaxim | 7:9cd16581b578 | 194 | result = writeMemory(commandReg, command); |
IanBenzMaxim | 7:9cd16581b578 | 195 | } |
IanBenzMaxim | 7:9cd16581b578 | 196 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 197 | } |
IanBenzMaxim | 7:9cd16581b578 | 198 | |
IanBenzMaxim | 7:9cd16581b578 | 199 | error_code DS2465::configureLevel(Level level) { |
IanBenzMaxim | 7:9cd16581b578 | 200 | // Check if supported level |
IanBenzMaxim | 7:9cd16581b578 | 201 | if (!((level == NormalLevel) || (level == StrongLevel))) { |
IanBenzMaxim | 7:9cd16581b578 | 202 | return make_error_code(InvalidLevelError); |
IanBenzMaxim | 7:9cd16581b578 | 203 | } |
IanBenzMaxim | 7:9cd16581b578 | 204 | // Check if requested level already set |
IanBenzMaxim | 7:9cd16581b578 | 205 | if (curConfig.getSPU() == (level == StrongLevel)) { |
IanBenzMaxim | 7:9cd16581b578 | 206 | return error_code(); |
IanBenzMaxim | 7:9cd16581b578 | 207 | } |
IanBenzMaxim | 7:9cd16581b578 | 208 | // Set the level |
IanBenzMaxim | 7:9cd16581b578 | 209 | return writeConfig(Config(curConfig).setSPU(level == StrongLevel)); |
IanBenzMaxim | 7:9cd16581b578 | 210 | } |
IanBenzMaxim | 7:9cd16581b578 | 211 | |
IanBenzMaxim | 7:9cd16581b578 | 212 | error_code DS2465::setLevel(Level newLevel) { |
IanBenzMaxim | 7:9cd16581b578 | 213 | if (newLevel == StrongLevel) { |
IanBenzMaxim | 7:9cd16581b578 | 214 | return make_error_code(InvalidLevelError); |
IanBenzMaxim | 7:9cd16581b578 | 215 | } |
IanBenzMaxim | 7:9cd16581b578 | 216 | |
IanBenzMaxim | 7:9cd16581b578 | 217 | return configureLevel(newLevel); |
IanBenzMaxim | 7:9cd16581b578 | 218 | } |
IanBenzMaxim | 7:9cd16581b578 | 219 | |
IanBenzMaxim | 7:9cd16581b578 | 220 | error_code DS2465::setSpeed(Speed newSpeed) { |
IanBenzMaxim | 7:9cd16581b578 | 221 | // Check if supported speed |
IanBenzMaxim | 7:9cd16581b578 | 222 | if (!((newSpeed == OverdriveSpeed) || (newSpeed == StandardSpeed))) { |
IanBenzMaxim | 7:9cd16581b578 | 223 | return make_error_code(InvalidSpeedError); |
IanBenzMaxim | 7:9cd16581b578 | 224 | } |
IanBenzMaxim | 7:9cd16581b578 | 225 | // Check if requested speed is already set |
IanBenzMaxim | 7:9cd16581b578 | 226 | if (curConfig.get1WS() == (newSpeed == OverdriveSpeed)) { |
IanBenzMaxim | 7:9cd16581b578 | 227 | return error_code(); |
IanBenzMaxim | 7:9cd16581b578 | 228 | } |
IanBenzMaxim | 7:9cd16581b578 | 229 | // Set the speed |
IanBenzMaxim | 7:9cd16581b578 | 230 | return writeConfig(Config(curConfig).set1WS(newSpeed == OverdriveSpeed)); |
IanBenzMaxim | 7:9cd16581b578 | 231 | } |
IanBenzMaxim | 7:9cd16581b578 | 232 | |
IanBenzMaxim | 7:9cd16581b578 | 233 | error_code DS2465::triplet(TripletData & data) { |
IanBenzMaxim | 7:9cd16581b578 | 234 | // 1-Wire Triplet (Case B) |
IanBenzMaxim | 7:9cd16581b578 | 235 | // S AD,0 [A] 1WT [A] SS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 7:9cd16581b578 | 236 | // \--------/ |
IanBenzMaxim | 7:9cd16581b578 | 237 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 7:9cd16581b578 | 238 | // [] indicates from slave |
IanBenzMaxim | 7:9cd16581b578 | 239 | // SS indicates byte containing search direction bit value in msbit |
IanBenzMaxim | 7:9cd16581b578 | 240 | |
IanBenzMaxim | 7:9cd16581b578 | 241 | const uint_least8_t command[] = { |
IanBenzMaxim | 7:9cd16581b578 | 242 | 0x78, static_cast<uint_least8_t>(data.writeBit ? 0x80 : 0x00)}; |
IanBenzMaxim | 7:9cd16581b578 | 243 | error_code result = writeMemory(commandReg, command); |
IanBenzMaxim | 7:9cd16581b578 | 244 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 245 | uint_least8_t status; |
IanBenzMaxim | 7:9cd16581b578 | 246 | result = pollBusy(&status); |
IanBenzMaxim | 7:9cd16581b578 | 247 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 248 | // check bit results in status byte |
IanBenzMaxim | 7:9cd16581b578 | 249 | data.readBit = ((status & Status_SBR) == Status_SBR); |
IanBenzMaxim | 7:9cd16581b578 | 250 | data.readBitComplement = ((status & Status_TSB) == Status_TSB); |
IanBenzMaxim | 7:9cd16581b578 | 251 | data.writeBit = ((status & Status_DIR) == Status_DIR); |
IanBenzMaxim | 7:9cd16581b578 | 252 | } |
IanBenzMaxim | 7:9cd16581b578 | 253 | } |
IanBenzMaxim | 7:9cd16581b578 | 254 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 255 | } |
IanBenzMaxim | 7:9cd16581b578 | 256 | |
IanBenzMaxim | 7:9cd16581b578 | 257 | error_code DS2465::readBlock(span<uint_least8_t> recvBuf) { |
IanBenzMaxim | 7:9cd16581b578 | 258 | // 1-Wire Receive Block (Case A) |
IanBenzMaxim | 7:9cd16581b578 | 259 | // S AD,0 [A] CommandReg [A] 1WRF [A] PR [A] P |
IanBenzMaxim | 7:9cd16581b578 | 260 | // [] indicates from slave |
IanBenzMaxim | 7:9cd16581b578 | 261 | // PR indicates byte containing parameter |
IanBenzMaxim | 7:9cd16581b578 | 262 | |
IanBenzMaxim | 7:9cd16581b578 | 263 | error_code result; |
IanBenzMaxim | 7:9cd16581b578 | 264 | span<uint_least8_t>::index_type recvIdx = 0; |
IanBenzMaxim | 7:9cd16581b578 | 265 | while (recvIdx < recvBuf.size() && !result) { |
IanBenzMaxim | 7:9cd16581b578 | 266 | const uint_least8_t command[] = { |
IanBenzMaxim | 7:9cd16581b578 | 267 | 0xE1, |
IanBenzMaxim | 7:9cd16581b578 | 268 | static_cast<uint_least8_t>(std::min<span<uint_least8_t>::index_type>( |
IanBenzMaxim | 7:9cd16581b578 | 269 | recvBuf.size() - recvIdx, maxBlockSize))}; |
IanBenzMaxim | 7:9cd16581b578 | 270 | result = writeMemory(commandReg, command); |
IanBenzMaxim | 7:9cd16581b578 | 271 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 272 | result = pollBusy(); |
IanBenzMaxim | 7:9cd16581b578 | 273 | } |
IanBenzMaxim | 7:9cd16581b578 | 274 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 275 | result = readMemory(scratchpad, recvBuf.subspan(recvIdx, command[1])); |
IanBenzMaxim | 7:9cd16581b578 | 276 | } |
IanBenzMaxim | 7:9cd16581b578 | 277 | recvIdx += command[1]; |
IanBenzMaxim | 7:9cd16581b578 | 278 | } |
IanBenzMaxim | 7:9cd16581b578 | 279 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 280 | } |
IanBenzMaxim | 7:9cd16581b578 | 281 | |
IanBenzMaxim | 7:9cd16581b578 | 282 | error_code DS2465::writeBlock(span<const uint_least8_t> sendBuf) { |
IanBenzMaxim | 7:9cd16581b578 | 283 | error_code result; |
IanBenzMaxim | 7:9cd16581b578 | 284 | span<const uint_least8_t>::index_type sendIdx = 0; |
IanBenzMaxim | 7:9cd16581b578 | 285 | while (sendIdx < sendBuf.size() && !result) { |
IanBenzMaxim | 7:9cd16581b578 | 286 | const uint_least8_t command[] = { |
IanBenzMaxim | 7:9cd16581b578 | 287 | owTransmitBlockCmd, static_cast<uint_least8_t>( |
IanBenzMaxim | 7:9cd16581b578 | 288 | std::min<span<const uint_least8_t>::index_type>( |
IanBenzMaxim | 7:9cd16581b578 | 289 | sendBuf.size() - sendIdx, maxBlockSize))}; |
IanBenzMaxim | 7:9cd16581b578 | 290 | |
IanBenzMaxim | 7:9cd16581b578 | 291 | // prefill scratchpad with required data |
IanBenzMaxim | 7:9cd16581b578 | 292 | result = writeMemory(scratchpad, sendBuf.subspan(sendIdx, command[1])); |
IanBenzMaxim | 7:9cd16581b578 | 293 | |
IanBenzMaxim | 7:9cd16581b578 | 294 | // 1-Wire Transmit Block (Case A) |
IanBenzMaxim | 7:9cd16581b578 | 295 | // S AD,0 [A] CommandReg [A] 1WTB [A] PR [A] P |
IanBenzMaxim | 7:9cd16581b578 | 296 | // [] indicates from slave |
IanBenzMaxim | 7:9cd16581b578 | 297 | // PR indicates byte containing parameter |
IanBenzMaxim | 7:9cd16581b578 | 298 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 299 | result = writeMemory(commandReg, command); |
IanBenzMaxim | 7:9cd16581b578 | 300 | } |
IanBenzMaxim | 7:9cd16581b578 | 301 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 302 | result = pollBusy(); |
IanBenzMaxim | 7:9cd16581b578 | 303 | } |
IanBenzMaxim | 7:9cd16581b578 | 304 | sendIdx += command[1]; |
IanBenzMaxim | 7:9cd16581b578 | 305 | } |
IanBenzMaxim | 7:9cd16581b578 | 306 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 307 | } |
IanBenzMaxim | 7:9cd16581b578 | 308 | |
IanBenzMaxim | 7:9cd16581b578 | 309 | error_code DS2465::writeMacBlock() const { |
IanBenzMaxim | 7:9cd16581b578 | 310 | // 1-Wire Transmit Block (Case A) |
IanBenzMaxim | 7:9cd16581b578 | 311 | // S AD,0 [A] CommandReg [A] 1WTB [A] PR [A] P |
IanBenzMaxim | 7:9cd16581b578 | 312 | // [] indicates from slave |
IanBenzMaxim | 7:9cd16581b578 | 313 | // PR indicates byte containing parameter |
IanBenzMaxim | 7:9cd16581b578 | 314 | |
IanBenzMaxim | 7:9cd16581b578 | 315 | const uint_least8_t command[] = {owTransmitBlockCmd, 0xFF}; |
IanBenzMaxim | 7:9cd16581b578 | 316 | error_code result = writeMemory(commandReg, command); |
IanBenzMaxim | 7:9cd16581b578 | 317 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 318 | result = pollBusy(); |
IanBenzMaxim | 7:9cd16581b578 | 319 | } |
IanBenzMaxim | 7:9cd16581b578 | 320 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 321 | } |
IanBenzMaxim | 7:9cd16581b578 | 322 | |
IanBenzMaxim | 7:9cd16581b578 | 323 | error_code DS2465::readByteSetLevel(uint_least8_t & recvByte, |
IanBenzMaxim | 7:9cd16581b578 | 324 | Level afterLevel) { |
IanBenzMaxim | 7:9cd16581b578 | 325 | // 1-Wire Read Bytes (Case C) |
IanBenzMaxim | 7:9cd16581b578 | 326 | // S AD,0 [A] CommandReg [A] 1WRB [A] Sr AD,1 [A] [Status] A [Status] A |
IanBenzMaxim | 7:9cd16581b578 | 327 | // \--------/ |
IanBenzMaxim | 7:9cd16581b578 | 328 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 7:9cd16581b578 | 329 | // Sr AD,0 [A] SRP [A] E1 [A] Sr AD,1 [A] DD A\ P |
IanBenzMaxim | 7:9cd16581b578 | 330 | // |
IanBenzMaxim | 7:9cd16581b578 | 331 | // [] indicates from slave |
IanBenzMaxim | 7:9cd16581b578 | 332 | // DD data read |
IanBenzMaxim | 7:9cd16581b578 | 333 | |
IanBenzMaxim | 7:9cd16581b578 | 334 | error_code result = configureLevel(afterLevel); |
IanBenzMaxim | 7:9cd16581b578 | 335 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 336 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 337 | } |
IanBenzMaxim | 7:9cd16581b578 | 338 | |
IanBenzMaxim | 7:9cd16581b578 | 339 | const uint_least8_t command = 0x96; |
IanBenzMaxim | 7:9cd16581b578 | 340 | result = writeMemory(commandReg, make_span(&command, 1)); |
IanBenzMaxim | 7:9cd16581b578 | 341 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 342 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 343 | } |
IanBenzMaxim | 7:9cd16581b578 | 344 | |
IanBenzMaxim | 7:9cd16581b578 | 345 | result = pollBusy(); |
IanBenzMaxim | 7:9cd16581b578 | 346 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 347 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 348 | } |
IanBenzMaxim | 7:9cd16581b578 | 349 | |
IanBenzMaxim | 7:9cd16581b578 | 350 | result = readMemory(0x62, make_span(&recvByte, 1)); |
IanBenzMaxim | 7:9cd16581b578 | 351 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 352 | } |
IanBenzMaxim | 7:9cd16581b578 | 353 | |
IanBenzMaxim | 7:9cd16581b578 | 354 | error_code DS2465::writeByteSetLevel(uint_least8_t sendByte, Level afterLevel) { |
IanBenzMaxim | 7:9cd16581b578 | 355 | // 1-Wire Write Byte (Case B) |
IanBenzMaxim | 7:9cd16581b578 | 356 | // S AD,0 [A] CommandReg [A] 1WWB [A] DD [A] Sr AD,1 [A] [Status] A [Status] |
IanBenzMaxim | 7:9cd16581b578 | 357 | // A\ P |
IanBenzMaxim | 7:9cd16581b578 | 358 | // \--------/ |
IanBenzMaxim | 7:9cd16581b578 | 359 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 7:9cd16581b578 | 360 | // [] indicates from slave |
IanBenzMaxim | 7:9cd16581b578 | 361 | // DD data to write |
IanBenzMaxim | 7:9cd16581b578 | 362 | |
IanBenzMaxim | 7:9cd16581b578 | 363 | error_code result = configureLevel(afterLevel); |
IanBenzMaxim | 7:9cd16581b578 | 364 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 365 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 366 | } |
IanBenzMaxim | 7:9cd16581b578 | 367 | |
IanBenzMaxim | 7:9cd16581b578 | 368 | const uint_least8_t command[] = {0xA5, sendByte}; |
IanBenzMaxim | 7:9cd16581b578 | 369 | result = writeMemory(commandReg, command); |
IanBenzMaxim | 7:9cd16581b578 | 370 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 371 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 372 | } |
IanBenzMaxim | 7:9cd16581b578 | 373 | |
IanBenzMaxim | 7:9cd16581b578 | 374 | result = pollBusy(); |
IanBenzMaxim | 7:9cd16581b578 | 375 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 376 | } |
IanBenzMaxim | 7:9cd16581b578 | 377 | |
IanBenzMaxim | 7:9cd16581b578 | 378 | error_code DS2465::touchBitSetLevel(bool & sendRecvBit, Level afterLevel) { |
IanBenzMaxim | 7:9cd16581b578 | 379 | // 1-Wire bit (Case B) |
IanBenzMaxim | 7:9cd16581b578 | 380 | // S AD,0 [A] CommandReg [A] 1WSB [A] BB [A] Sr AD,1 [A] [Status] A [Status] |
IanBenzMaxim | 7:9cd16581b578 | 381 | // A\ P |
IanBenzMaxim | 7:9cd16581b578 | 382 | // \--------/ |
IanBenzMaxim | 7:9cd16581b578 | 383 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 7:9cd16581b578 | 384 | // [] indicates from slave |
IanBenzMaxim | 7:9cd16581b578 | 385 | // BB indicates byte containing bit value in msbit |
IanBenzMaxim | 7:9cd16581b578 | 386 | |
IanBenzMaxim | 7:9cd16581b578 | 387 | error_code result = configureLevel(afterLevel); |
IanBenzMaxim | 7:9cd16581b578 | 388 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 389 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 390 | } |
IanBenzMaxim | 7:9cd16581b578 | 391 | |
IanBenzMaxim | 7:9cd16581b578 | 392 | const uint_least8_t command[] = { |
IanBenzMaxim | 7:9cd16581b578 | 393 | 0x87, static_cast<uint_least8_t>(sendRecvBit ? 0x80 : 0x00)}; |
IanBenzMaxim | 7:9cd16581b578 | 394 | result = writeMemory(commandReg, command); |
IanBenzMaxim | 7:9cd16581b578 | 395 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 396 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 397 | } |
IanBenzMaxim | 7:9cd16581b578 | 398 | |
IanBenzMaxim | 7:9cd16581b578 | 399 | uint_least8_t status; |
IanBenzMaxim | 7:9cd16581b578 | 400 | result = pollBusy(&status); |
IanBenzMaxim | 7:9cd16581b578 | 401 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 402 | sendRecvBit = ((status & Status_SBR) == Status_SBR); |
IanBenzMaxim | 7:9cd16581b578 | 403 | } |
IanBenzMaxim | 7:9cd16581b578 | 404 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 405 | } |
IanBenzMaxim | 7:9cd16581b578 | 406 | |
IanBenzMaxim | 7:9cd16581b578 | 407 | error_code DS2465::writeMemory(uint_least8_t addr, |
IanBenzMaxim | 7:9cd16581b578 | 408 | span<const uint_least8_t> buf) const { |
IanBenzMaxim | 7:9cd16581b578 | 409 | // Write SRAM (Case A) |
IanBenzMaxim | 7:9cd16581b578 | 410 | // S AD,0 [A] VSA [A] DD [A] P |
IanBenzMaxim | 7:9cd16581b578 | 411 | // \-----/ |
IanBenzMaxim | 7:9cd16581b578 | 412 | // Repeat for each data byte |
IanBenzMaxim | 7:9cd16581b578 | 413 | // [] indicates from slave |
IanBenzMaxim | 7:9cd16581b578 | 414 | // VSA valid SRAM memory address |
IanBenzMaxim | 7:9cd16581b578 | 415 | // DD memory data to write |
IanBenzMaxim | 7:9cd16581b578 | 416 | |
IanBenzMaxim | 7:9cd16581b578 | 417 | error_code result = master->start(address_); |
IanBenzMaxim | 7:9cd16581b578 | 418 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 419 | master->stop(); |
IanBenzMaxim | 7:9cd16581b578 | 420 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 421 | } |
IanBenzMaxim | 7:9cd16581b578 | 422 | result = master->writeByte(addr); |
IanBenzMaxim | 7:9cd16581b578 | 423 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 424 | master->stop(); |
IanBenzMaxim | 7:9cd16581b578 | 425 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 426 | } |
IanBenzMaxim | 7:9cd16581b578 | 427 | result = master->writeBlock(buf); |
IanBenzMaxim | 7:9cd16581b578 | 428 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 429 | master->stop(); |
IanBenzMaxim | 7:9cd16581b578 | 430 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 431 | } |
IanBenzMaxim | 7:9cd16581b578 | 432 | result = master->stop(); |
IanBenzMaxim | 7:9cd16581b578 | 433 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 434 | } |
IanBenzMaxim | 7:9cd16581b578 | 435 | |
IanBenzMaxim | 7:9cd16581b578 | 436 | error_code DS2465::readMemory(uint_least8_t addr, |
IanBenzMaxim | 7:9cd16581b578 | 437 | span<uint_least8_t> buf) const { |
IanBenzMaxim | 7:9cd16581b578 | 438 | // Read (Case A) |
IanBenzMaxim | 7:9cd16581b578 | 439 | // S AD,0 [A] MA [A] Sr AD,1 [A] [DD] A [DD] A\ P |
IanBenzMaxim | 7:9cd16581b578 | 440 | // \-----/ |
IanBenzMaxim | 7:9cd16581b578 | 441 | // Repeat for each data byte, NAK last byte |
IanBenzMaxim | 7:9cd16581b578 | 442 | // [] indicates from slave |
IanBenzMaxim | 7:9cd16581b578 | 443 | // MA memory address |
IanBenzMaxim | 7:9cd16581b578 | 444 | // DD memory data read |
IanBenzMaxim | 7:9cd16581b578 | 445 | |
IanBenzMaxim | 7:9cd16581b578 | 446 | error_code result = master->start(address_); |
IanBenzMaxim | 7:9cd16581b578 | 447 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 448 | master->stop(); |
IanBenzMaxim | 7:9cd16581b578 | 449 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 450 | } |
IanBenzMaxim | 7:9cd16581b578 | 451 | result = master->writeByte(addr); |
IanBenzMaxim | 7:9cd16581b578 | 452 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 453 | master->stop(); |
IanBenzMaxim | 7:9cd16581b578 | 454 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 455 | } |
IanBenzMaxim | 7:9cd16581b578 | 456 | result = readMemory(buf); |
IanBenzMaxim | 7:9cd16581b578 | 457 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 458 | } |
IanBenzMaxim | 7:9cd16581b578 | 459 | |
IanBenzMaxim | 7:9cd16581b578 | 460 | error_code DS2465::readMemory(span<uint_least8_t> buf) const { |
IanBenzMaxim | 7:9cd16581b578 | 461 | error_code result = master->start(address_ | 1); |
IanBenzMaxim | 7:9cd16581b578 | 462 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 463 | master->stop(); |
IanBenzMaxim | 7:9cd16581b578 | 464 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 465 | } |
IanBenzMaxim | 7:9cd16581b578 | 466 | result = master->readBlock(I2CMaster::Nack, buf); |
IanBenzMaxim | 7:9cd16581b578 | 467 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 468 | master->stop(); |
IanBenzMaxim | 7:9cd16581b578 | 469 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 470 | } |
IanBenzMaxim | 7:9cd16581b578 | 471 | result = master->stop(); |
IanBenzMaxim | 7:9cd16581b578 | 472 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 473 | } |
IanBenzMaxim | 7:9cd16581b578 | 474 | |
IanBenzMaxim | 7:9cd16581b578 | 475 | error_code DS2465::writeConfig(Config config) { |
IanBenzMaxim | 7:9cd16581b578 | 476 | const uint_least8_t configReg = 0x67; |
IanBenzMaxim | 7:9cd16581b578 | 477 | uint_least8_t configBuf = |
IanBenzMaxim | 7:9cd16581b578 | 478 | ((config.readByte() ^ 0xF) << 4) | config.readByte(); |
IanBenzMaxim | 7:9cd16581b578 | 479 | error_code result = writeMemory(configReg, make_span(&configBuf, 1)); |
IanBenzMaxim | 7:9cd16581b578 | 480 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 481 | result = readMemory(configReg, make_span(&configBuf, 1)); |
IanBenzMaxim | 7:9cd16581b578 | 482 | } |
IanBenzMaxim | 7:9cd16581b578 | 483 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 484 | if (configBuf != config.readByte()) |
IanBenzMaxim | 7:9cd16581b578 | 485 | result = make_error_code(HardwareError); |
IanBenzMaxim | 7:9cd16581b578 | 486 | } |
IanBenzMaxim | 7:9cd16581b578 | 487 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 488 | curConfig = config; |
IanBenzMaxim | 7:9cd16581b578 | 489 | } |
IanBenzMaxim | 7:9cd16581b578 | 490 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 491 | } |
IanBenzMaxim | 7:9cd16581b578 | 492 | |
IanBenzMaxim | 7:9cd16581b578 | 493 | error_code DS2465::writePortParameter(PortParameter param, int val) { |
IanBenzMaxim | 7:9cd16581b578 | 494 | if (val < 0 || val > 15) { |
IanBenzMaxim | 7:9cd16581b578 | 495 | return make_error_code(ArgumentOutOfRangeError); |
IanBenzMaxim | 7:9cd16581b578 | 496 | } |
IanBenzMaxim | 7:9cd16581b578 | 497 | |
IanBenzMaxim | 7:9cd16581b578 | 498 | uint_least8_t addr = 0; |
IanBenzMaxim | 7:9cd16581b578 | 499 | switch (param) { |
IanBenzMaxim | 7:9cd16581b578 | 500 | case tRSTL_STD: |
IanBenzMaxim | 7:9cd16581b578 | 501 | case tRSTL_OD: |
IanBenzMaxim | 7:9cd16581b578 | 502 | addr = 0x68; |
IanBenzMaxim | 7:9cd16581b578 | 503 | break; |
IanBenzMaxim | 7:9cd16581b578 | 504 | case tMSP_STD: |
IanBenzMaxim | 7:9cd16581b578 | 505 | case tMSP_OD: |
IanBenzMaxim | 7:9cd16581b578 | 506 | addr = 0x69; |
IanBenzMaxim | 7:9cd16581b578 | 507 | break; |
IanBenzMaxim | 7:9cd16581b578 | 508 | case tW0L_STD: |
IanBenzMaxim | 7:9cd16581b578 | 509 | case tW0L_OD: |
IanBenzMaxim | 7:9cd16581b578 | 510 | addr = 0x6A; |
IanBenzMaxim | 7:9cd16581b578 | 511 | break; |
IanBenzMaxim | 7:9cd16581b578 | 512 | case tREC0: |
IanBenzMaxim | 7:9cd16581b578 | 513 | addr = 0x6B; |
IanBenzMaxim | 7:9cd16581b578 | 514 | break; |
IanBenzMaxim | 7:9cd16581b578 | 515 | case RWPU: |
IanBenzMaxim | 7:9cd16581b578 | 516 | addr = 0x6C; |
IanBenzMaxim | 7:9cd16581b578 | 517 | break; |
IanBenzMaxim | 7:9cd16581b578 | 518 | case tW1L_OD: |
IanBenzMaxim | 7:9cd16581b578 | 519 | addr = 0x6D; |
IanBenzMaxim | 7:9cd16581b578 | 520 | break; |
IanBenzMaxim | 7:9cd16581b578 | 521 | } |
IanBenzMaxim | 7:9cd16581b578 | 522 | |
IanBenzMaxim | 7:9cd16581b578 | 523 | uint_least8_t data; |
IanBenzMaxim | 7:9cd16581b578 | 524 | error_code result = readMemory(addr, make_span(&data, 1)); |
IanBenzMaxim | 7:9cd16581b578 | 525 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 526 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 527 | } |
IanBenzMaxim | 7:9cd16581b578 | 528 | |
IanBenzMaxim | 7:9cd16581b578 | 529 | uint_least8_t newData; |
IanBenzMaxim | 7:9cd16581b578 | 530 | if (param == tRSTL_OD || param == tMSP_OD || param == tW0L_OD) { |
IanBenzMaxim | 7:9cd16581b578 | 531 | newData = (data & 0x0F) | (val << 4); |
IanBenzMaxim | 7:9cd16581b578 | 532 | } else { |
IanBenzMaxim | 7:9cd16581b578 | 533 | newData = (data & 0xF0) | val; |
IanBenzMaxim | 7:9cd16581b578 | 534 | } |
IanBenzMaxim | 7:9cd16581b578 | 535 | |
IanBenzMaxim | 7:9cd16581b578 | 536 | if (newData != data) { |
IanBenzMaxim | 7:9cd16581b578 | 537 | result = writeMemory(addr, make_span(&newData, 1)); |
IanBenzMaxim | 7:9cd16581b578 | 538 | } |
IanBenzMaxim | 7:9cd16581b578 | 539 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 540 | } |
IanBenzMaxim | 7:9cd16581b578 | 541 | |
IanBenzMaxim | 7:9cd16581b578 | 542 | error_code DS2465::pollBusy(uint_least8_t * pStatus) const { |
IanBenzMaxim | 7:9cd16581b578 | 543 | const int pollLimit = 200; |
IanBenzMaxim | 7:9cd16581b578 | 544 | |
IanBenzMaxim | 7:9cd16581b578 | 545 | int pollCount = 0; |
IanBenzMaxim | 7:9cd16581b578 | 546 | uint_least8_t status; |
IanBenzMaxim | 7:9cd16581b578 | 547 | do { |
IanBenzMaxim | 7:9cd16581b578 | 548 | error_code result = readMemory(make_span(&status, 1)); |
IanBenzMaxim | 7:9cd16581b578 | 549 | if (result) { |
IanBenzMaxim | 7:9cd16581b578 | 550 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 551 | } |
IanBenzMaxim | 7:9cd16581b578 | 552 | if (pStatus != NULL) { |
IanBenzMaxim | 7:9cd16581b578 | 553 | *pStatus = status; |
IanBenzMaxim | 7:9cd16581b578 | 554 | } |
IanBenzMaxim | 7:9cd16581b578 | 555 | if (pollCount++ >= pollLimit) { |
IanBenzMaxim | 7:9cd16581b578 | 556 | return make_error_code(HardwareError); |
IanBenzMaxim | 7:9cd16581b578 | 557 | } |
IanBenzMaxim | 7:9cd16581b578 | 558 | } while (status & Status_1WB); |
IanBenzMaxim | 7:9cd16581b578 | 559 | |
IanBenzMaxim | 7:9cd16581b578 | 560 | return error_code(); |
IanBenzMaxim | 7:9cd16581b578 | 561 | } |
IanBenzMaxim | 7:9cd16581b578 | 562 | |
IanBenzMaxim | 7:9cd16581b578 | 563 | error_code DS2465::reset() { |
IanBenzMaxim | 7:9cd16581b578 | 564 | // 1-Wire reset (Case B) |
IanBenzMaxim | 7:9cd16581b578 | 565 | // S AD,0 [A] CommandReg [A] 1WRS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 7:9cd16581b578 | 566 | // \--------/ |
IanBenzMaxim | 7:9cd16581b578 | 567 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 7:9cd16581b578 | 568 | // [] indicates from slave |
IanBenzMaxim | 7:9cd16581b578 | 569 | |
IanBenzMaxim | 7:9cd16581b578 | 570 | uint_least8_t buf = 0xB4; |
IanBenzMaxim | 7:9cd16581b578 | 571 | error_code result = writeMemory(commandReg, make_span(&buf, 1)); |
IanBenzMaxim | 7:9cd16581b578 | 572 | |
IanBenzMaxim | 7:9cd16581b578 | 573 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 574 | result = pollBusy(&buf); |
IanBenzMaxim | 7:9cd16581b578 | 575 | } |
IanBenzMaxim | 7:9cd16581b578 | 576 | |
IanBenzMaxim | 7:9cd16581b578 | 577 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 578 | if ((buf & Status_SD) == Status_SD) { |
IanBenzMaxim | 7:9cd16581b578 | 579 | result = make_error_code(ShortDetectedError); |
IanBenzMaxim | 7:9cd16581b578 | 580 | } else if ((buf & Status_PPD) != Status_PPD) { |
IanBenzMaxim | 7:9cd16581b578 | 581 | result = make_error_code(NoSlaveError); |
IanBenzMaxim | 7:9cd16581b578 | 582 | } |
IanBenzMaxim | 7:9cd16581b578 | 583 | } |
IanBenzMaxim | 7:9cd16581b578 | 584 | |
IanBenzMaxim | 7:9cd16581b578 | 585 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 586 | } |
IanBenzMaxim | 7:9cd16581b578 | 587 | |
IanBenzMaxim | 7:9cd16581b578 | 588 | error_code DS2465::resetDevice() { |
IanBenzMaxim | 7:9cd16581b578 | 589 | // Device Reset |
IanBenzMaxim | 7:9cd16581b578 | 590 | // S AD,0 [A] CommandReg [A] 1WMR [A] Sr AD,1 [A] [SS] A\ P |
IanBenzMaxim | 7:9cd16581b578 | 591 | // [] indicates from slave |
IanBenzMaxim | 7:9cd16581b578 | 592 | // SS status byte to read to verify state |
IanBenzMaxim | 7:9cd16581b578 | 593 | |
IanBenzMaxim | 7:9cd16581b578 | 594 | uint_least8_t buf = 0xF0; |
IanBenzMaxim | 7:9cd16581b578 | 595 | error_code result = writeMemory(commandReg, make_span(&buf, 1)); |
IanBenzMaxim | 7:9cd16581b578 | 596 | |
IanBenzMaxim | 7:9cd16581b578 | 597 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 598 | result = readMemory(make_span(&buf, 1)); |
IanBenzMaxim | 7:9cd16581b578 | 599 | } |
IanBenzMaxim | 7:9cd16581b578 | 600 | |
IanBenzMaxim | 7:9cd16581b578 | 601 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 602 | if ((buf & 0xF7) != 0x10) { |
IanBenzMaxim | 7:9cd16581b578 | 603 | result = make_error_code(HardwareError); |
IanBenzMaxim | 7:9cd16581b578 | 604 | } |
IanBenzMaxim | 7:9cd16581b578 | 605 | } |
IanBenzMaxim | 7:9cd16581b578 | 606 | |
IanBenzMaxim | 7:9cd16581b578 | 607 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 608 | reset(); // do a command to get 1-Wire master reset out of holding state |
IanBenzMaxim | 7:9cd16581b578 | 609 | } |
IanBenzMaxim | 7:9cd16581b578 | 610 | |
IanBenzMaxim | 7:9cd16581b578 | 611 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 612 | } |
IanBenzMaxim | 7:9cd16581b578 | 613 | |
IanBenzMaxim | 7:9cd16581b578 | 614 | error_code |
IanBenzMaxim | 7:9cd16581b578 | 615 | DS2465::computeNextMasterSecret(AuthenticationData::const_span data) { |
IanBenzMaxim | 7:9cd16581b578 | 616 | error_code result = writeMemory(scratchpad, data); |
IanBenzMaxim | 7:9cd16581b578 | 617 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 618 | result = computeNextMasterSecret(false, 0, FullPage); |
IanBenzMaxim | 7:9cd16581b578 | 619 | } |
IanBenzMaxim | 7:9cd16581b578 | 620 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 621 | } |
IanBenzMaxim | 7:9cd16581b578 | 622 | |
IanBenzMaxim | 7:9cd16581b578 | 623 | error_code |
IanBenzMaxim | 7:9cd16581b578 | 624 | DS2465::computeNextMasterSecretWithSwap(AuthenticationData::const_span data, |
IanBenzMaxim | 7:9cd16581b578 | 625 | int pageNum, PageRegion region) { |
IanBenzMaxim | 7:9cd16581b578 | 626 | error_code result = writeMemory(scratchpad, data); |
IanBenzMaxim | 7:9cd16581b578 | 627 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 628 | result = computeNextMasterSecret(true, pageNum, region); |
IanBenzMaxim | 7:9cd16581b578 | 629 | } |
IanBenzMaxim | 7:9cd16581b578 | 630 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 631 | } |
IanBenzMaxim | 7:9cd16581b578 | 632 | |
IanBenzMaxim | 7:9cd16581b578 | 633 | error_code DS2465::computeWriteMac(WriteMacData::const_span data) const { |
IanBenzMaxim | 7:9cd16581b578 | 634 | error_code result = writeMemory(scratchpad, data); |
IanBenzMaxim | 7:9cd16581b578 | 635 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 636 | result = computeWriteMac(false, false, 0, 0); |
IanBenzMaxim | 7:9cd16581b578 | 637 | } |
IanBenzMaxim | 7:9cd16581b578 | 638 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 639 | } |
IanBenzMaxim | 7:9cd16581b578 | 640 | |
IanBenzMaxim | 7:9cd16581b578 | 641 | error_code DS2465::computeWriteMac(WriteMacData::const_span data, |
IanBenzMaxim | 7:9cd16581b578 | 642 | Page::span mac) const { |
IanBenzMaxim | 7:9cd16581b578 | 643 | error_code result = computeWriteMac(data); |
IanBenzMaxim | 7:9cd16581b578 | 644 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 645 | result = readMemory(mac); |
IanBenzMaxim | 7:9cd16581b578 | 646 | } |
IanBenzMaxim | 7:9cd16581b578 | 647 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 648 | } |
IanBenzMaxim | 7:9cd16581b578 | 649 | |
IanBenzMaxim | 7:9cd16581b578 | 650 | error_code |
IanBenzMaxim | 7:9cd16581b578 | 651 | DS2465::computeAndTransmitWriteMac(WriteMacData::const_span data) const { |
IanBenzMaxim | 7:9cd16581b578 | 652 | error_code result = computeWriteMac(data); |
IanBenzMaxim | 7:9cd16581b578 | 653 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 654 | result = writeMacBlock(); |
IanBenzMaxim | 7:9cd16581b578 | 655 | } |
IanBenzMaxim | 7:9cd16581b578 | 656 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 657 | } |
IanBenzMaxim | 7:9cd16581b578 | 658 | |
IanBenzMaxim | 7:9cd16581b578 | 659 | error_code DS2465::computeWriteMacWithSwap(WriteMacData::const_span data, |
IanBenzMaxim | 7:9cd16581b578 | 660 | int pageNum, int segmentNum) const { |
IanBenzMaxim | 7:9cd16581b578 | 661 | error_code result = writeMemory(scratchpad, data); |
IanBenzMaxim | 7:9cd16581b578 | 662 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 663 | result = computeWriteMac(false, true, pageNum, segmentNum); |
IanBenzMaxim | 7:9cd16581b578 | 664 | } |
IanBenzMaxim | 7:9cd16581b578 | 665 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 666 | } |
IanBenzMaxim | 7:9cd16581b578 | 667 | |
IanBenzMaxim | 7:9cd16581b578 | 668 | error_code DS2465::computeWriteMacWithSwap(WriteMacData::const_span data, |
IanBenzMaxim | 7:9cd16581b578 | 669 | int pageNum, int segmentNum, |
IanBenzMaxim | 7:9cd16581b578 | 670 | Page::span mac) const { |
IanBenzMaxim | 7:9cd16581b578 | 671 | error_code result = computeWriteMacWithSwap(data, pageNum, segmentNum); |
IanBenzMaxim | 7:9cd16581b578 | 672 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 673 | result = readMemory(mac); |
IanBenzMaxim | 7:9cd16581b578 | 674 | } |
IanBenzMaxim | 7:9cd16581b578 | 675 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 676 | } |
IanBenzMaxim | 7:9cd16581b578 | 677 | |
IanBenzMaxim | 7:9cd16581b578 | 678 | error_code |
IanBenzMaxim | 7:9cd16581b578 | 679 | DS2465::computeAndTransmitWriteMacWithSwap(WriteMacData::const_span data, |
IanBenzMaxim | 7:9cd16581b578 | 680 | int pageNum, int segmentNum) const { |
IanBenzMaxim | 7:9cd16581b578 | 681 | error_code result = computeWriteMacWithSwap(data, pageNum, segmentNum); |
IanBenzMaxim | 7:9cd16581b578 | 682 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 683 | result = writeMacBlock(); |
IanBenzMaxim | 7:9cd16581b578 | 684 | } |
IanBenzMaxim | 7:9cd16581b578 | 685 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 686 | } |
IanBenzMaxim | 7:9cd16581b578 | 687 | |
IanBenzMaxim | 7:9cd16581b578 | 688 | error_code DS2465::computeSlaveSecret(AuthenticationData::const_span data) { |
IanBenzMaxim | 7:9cd16581b578 | 689 | error_code result = writeMemory(scratchpad, data); |
IanBenzMaxim | 7:9cd16581b578 | 690 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 691 | result = computeSlaveSecret(false, 0, FullPage); |
IanBenzMaxim | 7:9cd16581b578 | 692 | } |
IanBenzMaxim | 7:9cd16581b578 | 693 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 694 | } |
IanBenzMaxim | 7:9cd16581b578 | 695 | |
IanBenzMaxim | 7:9cd16581b578 | 696 | error_code |
IanBenzMaxim | 7:9cd16581b578 | 697 | DS2465::computeSlaveSecretWithSwap(AuthenticationData::const_span data, |
IanBenzMaxim | 7:9cd16581b578 | 698 | int pageNum, PageRegion region) { |
IanBenzMaxim | 7:9cd16581b578 | 699 | error_code result = writeMemory(scratchpad, data); |
IanBenzMaxim | 7:9cd16581b578 | 700 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 701 | result = computeSlaveSecret(true, pageNum, region); |
IanBenzMaxim | 7:9cd16581b578 | 702 | } |
IanBenzMaxim | 7:9cd16581b578 | 703 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 704 | } |
IanBenzMaxim | 7:9cd16581b578 | 705 | |
IanBenzMaxim | 7:9cd16581b578 | 706 | error_code DS2465::computeAuthMac(AuthenticationData::const_span data) const { |
IanBenzMaxim | 7:9cd16581b578 | 707 | error_code result = writeMemory(scratchpad, data); |
IanBenzMaxim | 7:9cd16581b578 | 708 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 709 | result = computeAuthMac(false, 0, FullPage); |
IanBenzMaxim | 7:9cd16581b578 | 710 | } |
IanBenzMaxim | 7:9cd16581b578 | 711 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 712 | } |
IanBenzMaxim | 7:9cd16581b578 | 713 | |
IanBenzMaxim | 7:9cd16581b578 | 714 | error_code DS2465::computeAuthMac(AuthenticationData::const_span data, |
IanBenzMaxim | 7:9cd16581b578 | 715 | Page::span mac) const { |
IanBenzMaxim | 7:9cd16581b578 | 716 | error_code result = computeAuthMac(data); |
IanBenzMaxim | 7:9cd16581b578 | 717 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 718 | result = readMemory(mac); |
IanBenzMaxim | 7:9cd16581b578 | 719 | } |
IanBenzMaxim | 7:9cd16581b578 | 720 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 721 | } |
IanBenzMaxim | 7:9cd16581b578 | 722 | |
IanBenzMaxim | 7:9cd16581b578 | 723 | error_code |
IanBenzMaxim | 7:9cd16581b578 | 724 | DS2465::computeAndTransmitAuthMac(AuthenticationData::const_span data) const { |
IanBenzMaxim | 7:9cd16581b578 | 725 | error_code result = computeAuthMac(data); |
IanBenzMaxim | 7:9cd16581b578 | 726 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 727 | result = writeMacBlock(); |
IanBenzMaxim | 7:9cd16581b578 | 728 | } |
IanBenzMaxim | 7:9cd16581b578 | 729 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 730 | } |
IanBenzMaxim | 7:9cd16581b578 | 731 | |
IanBenzMaxim | 7:9cd16581b578 | 732 | error_code DS2465::computeAuthMacWithSwap(AuthenticationData::const_span data, |
IanBenzMaxim | 7:9cd16581b578 | 733 | int pageNum, |
IanBenzMaxim | 7:9cd16581b578 | 734 | PageRegion region) const { |
IanBenzMaxim | 7:9cd16581b578 | 735 | error_code result = writeMemory(scratchpad, data); |
IanBenzMaxim | 7:9cd16581b578 | 736 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 737 | result = computeAuthMac(true, pageNum, region); |
IanBenzMaxim | 7:9cd16581b578 | 738 | } |
IanBenzMaxim | 7:9cd16581b578 | 739 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 740 | } |
IanBenzMaxim | 7:9cd16581b578 | 741 | |
IanBenzMaxim | 7:9cd16581b578 | 742 | error_code DS2465::computeAuthMacWithSwap(AuthenticationData::const_span data, |
IanBenzMaxim | 7:9cd16581b578 | 743 | int pageNum, PageRegion region, |
IanBenzMaxim | 7:9cd16581b578 | 744 | Page::span mac) const { |
IanBenzMaxim | 7:9cd16581b578 | 745 | error_code result = computeAuthMacWithSwap(data, pageNum, region); |
IanBenzMaxim | 7:9cd16581b578 | 746 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 747 | result = readMemory(mac); |
IanBenzMaxim | 7:9cd16581b578 | 748 | } |
IanBenzMaxim | 7:9cd16581b578 | 749 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 750 | } |
IanBenzMaxim | 7:9cd16581b578 | 751 | |
IanBenzMaxim | 7:9cd16581b578 | 752 | error_code DS2465::computeAndTransmitAuthMacWithSwap( |
IanBenzMaxim | 7:9cd16581b578 | 753 | AuthenticationData::const_span data, int pageNum, PageRegion region) const { |
IanBenzMaxim | 7:9cd16581b578 | 754 | error_code result = computeAuthMacWithSwap(data, pageNum, region); |
IanBenzMaxim | 7:9cd16581b578 | 755 | if (!result) { |
IanBenzMaxim | 7:9cd16581b578 | 756 | result = writeMacBlock(); |
IanBenzMaxim | 7:9cd16581b578 | 757 | } |
IanBenzMaxim | 7:9cd16581b578 | 758 | return result; |
IanBenzMaxim | 7:9cd16581b578 | 759 | } |
IanBenzMaxim | 7:9cd16581b578 | 760 | |
IanBenzMaxim | 7:9cd16581b578 | 761 | const error_category & DS2465::errorCategory() { |
IanBenzMaxim | 7:9cd16581b578 | 762 | static class : public error_category { |
IanBenzMaxim | 7:9cd16581b578 | 763 | public: |
IanBenzMaxim | 7:9cd16581b578 | 764 | virtual const char * name() const { return "DS2465"; } |
IanBenzMaxim | 7:9cd16581b578 | 765 | |
IanBenzMaxim | 7:9cd16581b578 | 766 | virtual std::string message(int condition) const { |
IanBenzMaxim | 7:9cd16581b578 | 767 | switch (condition) { |
IanBenzMaxim | 7:9cd16581b578 | 768 | case HardwareError: |
IanBenzMaxim | 7:9cd16581b578 | 769 | return "Hardware Error"; |
IanBenzMaxim | 7:9cd16581b578 | 770 | |
IanBenzMaxim | 7:9cd16581b578 | 771 | case ArgumentOutOfRangeError: |
IanBenzMaxim | 7:9cd16581b578 | 772 | return "Argument Out of Range Error"; |
IanBenzMaxim | 7:9cd16581b578 | 773 | |
IanBenzMaxim | 7:9cd16581b578 | 774 | default: |
IanBenzMaxim | 7:9cd16581b578 | 775 | return defaultErrorMessage(condition); |
IanBenzMaxim | 7:9cd16581b578 | 776 | } |
IanBenzMaxim | 7:9cd16581b578 | 777 | } |
IanBenzMaxim | 7:9cd16581b578 | 778 | } instance; |
IanBenzMaxim | 7:9cd16581b578 | 779 | return instance; |
IanBenzMaxim | 7:9cd16581b578 | 780 | } |
IanBenzMaxim | 7:9cd16581b578 | 781 | |
IanBenzMaxim | 7:9cd16581b578 | 782 | } // namespace MaximInterfaceDevices |