Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
Authenticators/DS28E15_22_25/DS28E15_22_25.cpp@75:8b627804927c, 2016-05-13 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Fri May 13 14:52:50 2016 -0500
- Revision:
- 75:8b627804927c
- Parent:
- 74:23be10c32fa3
- Child:
- 76:84e6c4994e29
Code cleanup.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
IanBenzMaxim | 75:8b627804927c | 1 | /******************************************************************//** |
IanBenzMaxim | 75:8b627804927c | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
IanBenzMaxim | 75:8b627804927c | 3 | * |
IanBenzMaxim | 75:8b627804927c | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
IanBenzMaxim | 75:8b627804927c | 5 | * copy of this software and associated documentation files (the "Software"), |
IanBenzMaxim | 75:8b627804927c | 6 | * to deal in the Software without restriction, including without limitation |
IanBenzMaxim | 75:8b627804927c | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
IanBenzMaxim | 75:8b627804927c | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
IanBenzMaxim | 75:8b627804927c | 9 | * Software is furnished to do so, subject to the following conditions: |
IanBenzMaxim | 75:8b627804927c | 10 | * |
IanBenzMaxim | 75:8b627804927c | 11 | * The above copyright notice and this permission notice shall be included |
IanBenzMaxim | 75:8b627804927c | 12 | * in all copies or substantial portions of the Software. |
IanBenzMaxim | 75:8b627804927c | 13 | * |
IanBenzMaxim | 75:8b627804927c | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
IanBenzMaxim | 75:8b627804927c | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
IanBenzMaxim | 75:8b627804927c | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
IanBenzMaxim | 75:8b627804927c | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
IanBenzMaxim | 75:8b627804927c | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
IanBenzMaxim | 75:8b627804927c | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
IanBenzMaxim | 75:8b627804927c | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
IanBenzMaxim | 75:8b627804927c | 21 | * |
IanBenzMaxim | 75:8b627804927c | 22 | * Except as contained in this notice, the name of Maxim Integrated |
IanBenzMaxim | 75:8b627804927c | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
IanBenzMaxim | 75:8b627804927c | 24 | * Products, Inc. Branding Policy. |
IanBenzMaxim | 75:8b627804927c | 25 | * |
IanBenzMaxim | 75:8b627804927c | 26 | * The mere transfer of this software does not imply any licenses |
IanBenzMaxim | 75:8b627804927c | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
IanBenzMaxim | 75:8b627804927c | 28 | * trademarks, maskwork rights, or any other form of intellectual |
IanBenzMaxim | 75:8b627804927c | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
IanBenzMaxim | 75:8b627804927c | 30 | * ownership rights. |
IanBenzMaxim | 75:8b627804927c | 31 | **********************************************************************/ |
IanBenzMaxim | 25:bdb1c5a53b58 | 32 | |
IanBenzMaxim | 73:2cecc1372acc | 33 | #include "DS28E15_22_25.h" |
IanBenzMaxim | 73:2cecc1372acc | 34 | #include "Masters/OneWireMaster.h" |
IanBenzMaxim | 73:2cecc1372acc | 35 | #include "wait_api.h" |
IanBenzMaxim | 73:2cecc1372acc | 36 | |
IanBenzMaxim | 73:2cecc1372acc | 37 | using OneWire::Authenticators::DS28E15_22_25; |
IanBenzMaxim | 73:2cecc1372acc | 38 | using OneWire::Authenticators::ISha256MacCoproc; |
IanBenzMaxim | 73:2cecc1372acc | 39 | using OneWire::OneWireSlave; |
IanBenzMaxim | 73:2cecc1372acc | 40 | using OneWire::Masters::OneWireMaster; |
IanBenzMaxim | 25:bdb1c5a53b58 | 41 | |
IanBenzMaxim | 49:36954b62f503 | 42 | /// 1-Wire device commands. |
IanBenzMaxim | 49:36954b62f503 | 43 | enum Command |
IanBenzMaxim | 49:36954b62f503 | 44 | { |
IanBenzMaxim | 75:8b627804927c | 45 | WriteMemory = 0x55, |
IanBenzMaxim | 75:8b627804927c | 46 | ReadMemory = 0xF0, |
IanBenzMaxim | 75:8b627804927c | 47 | LoadAndLockSecret = 0x33, |
IanBenzMaxim | 75:8b627804927c | 48 | ComputeAndLockSecret = 0x3C, |
IanBenzMaxim | 75:8b627804927c | 49 | ReadWriteScratchpad = 0x0F, |
IanBenzMaxim | 75:8b627804927c | 50 | ComputePageMac = 0xA5, |
IanBenzMaxim | 75:8b627804927c | 51 | ReadStatus = 0xAA, |
IanBenzMaxim | 75:8b627804927c | 52 | WriteBlockProtection = 0xC3, |
IanBenzMaxim | 75:8b627804927c | 53 | AuthWriteMemory = 0x5A, |
IanBenzMaxim | 75:8b627804927c | 54 | AuthWriteBlockProtection = 0xCC, |
IanBenzMaxim | 49:36954b62f503 | 55 | }; |
IanBenzMaxim | 25:bdb1c5a53b58 | 56 | |
IanBenzMaxim | 62:43039aeca2ab | 57 | DS28E15_22_25::Segment DS28E15_22_25::Page::toSegment(unsigned int segmentNum) const |
IanBenzMaxim | 62:43039aeca2ab | 58 | { |
IanBenzMaxim | 74:23be10c32fa3 | 59 | if (segmentNum > (segmentsPerPage - 1)) |
IanBenzMaxim | 74:23be10c32fa3 | 60 | { |
IanBenzMaxim | 74:23be10c32fa3 | 61 | segmentNum = (segmentsPerPage - 1); |
IanBenzMaxim | 74:23be10c32fa3 | 62 | } |
IanBenzMaxim | 74:23be10c32fa3 | 63 | return Segment(*reinterpret_cast<const Segment::Buffer *>(&m_data[segmentNum * sizeof(Segment::Buffer)])); |
IanBenzMaxim | 62:43039aeca2ab | 64 | } |
IanBenzMaxim | 62:43039aeca2ab | 65 | |
IanBenzMaxim | 62:43039aeca2ab | 66 | void DS28E15_22_25::Page::fromSegment(unsigned int segmentNum, const Segment & segment) |
IanBenzMaxim | 62:43039aeca2ab | 67 | { |
IanBenzMaxim | 74:23be10c32fa3 | 68 | if (segmentNum > (segmentsPerPage - 1)) |
IanBenzMaxim | 74:23be10c32fa3 | 69 | { |
IanBenzMaxim | 74:23be10c32fa3 | 70 | segmentNum = (segmentsPerPage - 1); |
IanBenzMaxim | 74:23be10c32fa3 | 71 | } |
IanBenzMaxim | 74:23be10c32fa3 | 72 | std::memcpy(&m_data[segmentNum * sizeof(Segment::Buffer)], &static_cast<const Segment::Buffer &>(segment), Segment::length); |
IanBenzMaxim | 62:43039aeca2ab | 73 | } |
IanBenzMaxim | 62:43039aeca2ab | 74 | |
IanBenzMaxim | 73:2cecc1372acc | 75 | DS28E15_22_25::BlockProtection::BlockProtection(bool readProtection, bool writeProtection, bool eepromEmulation, bool authProtection, uint8_t blockNum) |
IanBenzMaxim | 34:11fffbe98ef9 | 76 | { |
IanBenzMaxim | 74:23be10c32fa3 | 77 | setReadProtection(readProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 78 | setWriteProtection(writeProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 79 | setEepromEmulation(eepromEmulation); |
IanBenzMaxim | 74:23be10c32fa3 | 80 | setAuthProtection(authProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 81 | setBlockNum(blockNum); |
IanBenzMaxim | 34:11fffbe98ef9 | 82 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 83 | |
IanBenzMaxim | 73:2cecc1372acc | 84 | void DS28E15_22_25::BlockProtection::setBlockNum(uint8_t blockNum) |
IanBenzMaxim | 34:11fffbe98ef9 | 85 | { |
IanBenzMaxim | 74:23be10c32fa3 | 86 | m_status &= ~blockNumMask; |
IanBenzMaxim | 74:23be10c32fa3 | 87 | m_status |= (blockNum & blockNumMask); |
IanBenzMaxim | 34:11fffbe98ef9 | 88 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 89 | |
IanBenzMaxim | 34:11fffbe98ef9 | 90 | bool DS28E15_22_25::BlockProtection::noProtection() const |
IanBenzMaxim | 34:11fffbe98ef9 | 91 | { |
IanBenzMaxim | 74:23be10c32fa3 | 92 | return !readProtection() && !writeProtection() && !eepromEmulation() && !authProtection(); |
IanBenzMaxim | 34:11fffbe98ef9 | 93 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 94 | |
IanBenzMaxim | 34:11fffbe98ef9 | 95 | void DS28E15_22_25::BlockProtection::setReadProtection(bool readProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 96 | { |
IanBenzMaxim | 74:23be10c32fa3 | 97 | if (readProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 98 | { |
IanBenzMaxim | 74:23be10c32fa3 | 99 | m_status |= readProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 100 | } |
IanBenzMaxim | 74:23be10c32fa3 | 101 | else |
IanBenzMaxim | 74:23be10c32fa3 | 102 | { |
IanBenzMaxim | 74:23be10c32fa3 | 103 | m_status &= ~readProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 104 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 105 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 106 | |
IanBenzMaxim | 34:11fffbe98ef9 | 107 | void DS28E15_22_25::BlockProtection::setWriteProtection(bool writeProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 108 | { |
IanBenzMaxim | 74:23be10c32fa3 | 109 | if (writeProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 110 | { |
IanBenzMaxim | 74:23be10c32fa3 | 111 | m_status |= writeProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 112 | } |
IanBenzMaxim | 74:23be10c32fa3 | 113 | else |
IanBenzMaxim | 74:23be10c32fa3 | 114 | { |
IanBenzMaxim | 74:23be10c32fa3 | 115 | m_status &= ~writeProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 116 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 117 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 118 | |
IanBenzMaxim | 34:11fffbe98ef9 | 119 | void DS28E15_22_25::BlockProtection::setEepromEmulation(bool eepromEmulation) |
IanBenzMaxim | 34:11fffbe98ef9 | 120 | { |
IanBenzMaxim | 74:23be10c32fa3 | 121 | if (eepromEmulation) |
IanBenzMaxim | 74:23be10c32fa3 | 122 | { |
IanBenzMaxim | 74:23be10c32fa3 | 123 | m_status |= eepromEmulationMask; |
IanBenzMaxim | 74:23be10c32fa3 | 124 | } |
IanBenzMaxim | 74:23be10c32fa3 | 125 | else |
IanBenzMaxim | 74:23be10c32fa3 | 126 | { |
IanBenzMaxim | 74:23be10c32fa3 | 127 | m_status &= ~eepromEmulationMask; |
IanBenzMaxim | 74:23be10c32fa3 | 128 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 129 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 130 | |
IanBenzMaxim | 34:11fffbe98ef9 | 131 | void DS28E15_22_25::BlockProtection::setAuthProtection(bool authProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 132 | { |
IanBenzMaxim | 74:23be10c32fa3 | 133 | if (authProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 134 | { |
IanBenzMaxim | 74:23be10c32fa3 | 135 | m_status |= authProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 136 | } |
IanBenzMaxim | 74:23be10c32fa3 | 137 | else |
IanBenzMaxim | 74:23be10c32fa3 | 138 | { |
IanBenzMaxim | 74:23be10c32fa3 | 139 | m_status &= ~authProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 140 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 141 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 142 | |
IanBenzMaxim | 34:11fffbe98ef9 | 143 | DS28E15_22_25::DS28E15_22_25(OneWireMaster& OW_master, bool lowVoltage) |
IanBenzMaxim | 74:23be10c32fa3 | 144 | : lowVoltage(lowVoltage), m_OW_master(OW_master) |
IanBenzMaxim | 25:bdb1c5a53b58 | 145 | { |
IanBenzMaxim | 74:23be10c32fa3 | 146 | std::memset(manId, 0x00, manId.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 147 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 148 | |
IanBenzMaxim | 34:11fffbe98ef9 | 149 | DS28E15_22_25::MemoryPages DS28E15_22_25::memoryPages() |
IanBenzMaxim | 25:bdb1c5a53b58 | 150 | { |
IanBenzMaxim | 74:23be10c32fa3 | 151 | MemoryPages pages; |
IanBenzMaxim | 74:23be10c32fa3 | 152 | |
IanBenzMaxim | 74:23be10c32fa3 | 153 | switch (romId.familyCode()) |
IanBenzMaxim | 74:23be10c32fa3 | 154 | { |
IanBenzMaxim | 75:8b627804927c | 155 | case DS28E25_Family: |
IanBenzMaxim | 75:8b627804927c | 156 | pages = DS28E25_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 157 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 158 | |
IanBenzMaxim | 75:8b627804927c | 159 | case DS28E22_Family: |
IanBenzMaxim | 75:8b627804927c | 160 | pages = DS28E22_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 161 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 162 | |
IanBenzMaxim | 75:8b627804927c | 163 | case DS28E15_Family: |
IanBenzMaxim | 75:8b627804927c | 164 | pages = DS28E15_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 165 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 166 | |
IanBenzMaxim | 74:23be10c32fa3 | 167 | default: |
IanBenzMaxim | 75:8b627804927c | 168 | pages = Unknown_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 169 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 170 | } |
IanBenzMaxim | 74:23be10c32fa3 | 171 | |
IanBenzMaxim | 74:23be10c32fa3 | 172 | return pages; |
IanBenzMaxim | 25:bdb1c5a53b58 | 173 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 174 | |
IanBenzMaxim | 34:11fffbe98ef9 | 175 | DS28E15_22_25::ProtectionBlocks DS28E15_22_25::protectionBlocks() |
IanBenzMaxim | 25:bdb1c5a53b58 | 176 | { |
IanBenzMaxim | 74:23be10c32fa3 | 177 | ProtectionBlocks blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 178 | |
IanBenzMaxim | 74:23be10c32fa3 | 179 | switch (romId.familyCode()) |
IanBenzMaxim | 74:23be10c32fa3 | 180 | { |
IanBenzMaxim | 75:8b627804927c | 181 | case DS28E25_Family: |
IanBenzMaxim | 75:8b627804927c | 182 | blocks = DS28E25_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 183 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 184 | |
IanBenzMaxim | 75:8b627804927c | 185 | case DS28E22_Family: |
IanBenzMaxim | 75:8b627804927c | 186 | blocks = DS28E22_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 187 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 188 | |
IanBenzMaxim | 75:8b627804927c | 189 | case DS28E15_Family: |
IanBenzMaxim | 75:8b627804927c | 190 | blocks = DS28E15_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 191 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 192 | |
IanBenzMaxim | 74:23be10c32fa3 | 193 | default: |
IanBenzMaxim | 75:8b627804927c | 194 | blocks = Unknown_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 195 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 196 | } |
IanBenzMaxim | 74:23be10c32fa3 | 197 | |
IanBenzMaxim | 74:23be10c32fa3 | 198 | return blocks; |
IanBenzMaxim | 25:bdb1c5a53b58 | 199 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 200 | |
IanBenzMaxim | 74:23be10c32fa3 | 201 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthBlockProtection(const ISha256MacCoproc & MacCoproc, const BlockProtection & newProtection, const BlockProtection & oldProtection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 202 | { |
IanBenzMaxim | 74:23be10c32fa3 | 203 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 204 | int cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 205 | Mac mac; |
IanBenzMaxim | 74:23be10c32fa3 | 206 | |
IanBenzMaxim | 75:8b627804927c | 207 | buf[cnt++] = AuthWriteBlockProtection; |
IanBenzMaxim | 74:23be10c32fa3 | 208 | buf[cnt++] = newProtection.statusByte(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 209 | |
IanBenzMaxim | 74:23be10c32fa3 | 210 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 211 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 212 | |
IanBenzMaxim | 74:23be10c32fa3 | 213 | // read first CRC byte |
IanBenzMaxim | 74:23be10c32fa3 | 214 | m_OW_master.OWReadByte(buf[cnt++]); |
IanBenzMaxim | 74:23be10c32fa3 | 215 | |
IanBenzMaxim | 74:23be10c32fa3 | 216 | // read the last CRC and enable |
IanBenzMaxim | 74:23be10c32fa3 | 217 | m_OW_master.OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 218 | |
IanBenzMaxim | 74:23be10c32fa3 | 219 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 220 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 221 | |
IanBenzMaxim | 74:23be10c32fa3 | 222 | // disable strong pullup |
IanBenzMaxim | 75:8b627804927c | 223 | m_OW_master.OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 224 | |
IanBenzMaxim | 74:23be10c32fa3 | 225 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 226 | if (OneWireMaster::calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 227 | { |
IanBenzMaxim | 74:23be10c32fa3 | 228 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 229 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 230 | |
IanBenzMaxim | 74:23be10c32fa3 | 231 | ISha256MacCoproc::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 232 | result = computeProtectionWriteMac(MacCoproc, newProtection, oldProtection, romId, manId, mac); |
IanBenzMaxim | 74:23be10c32fa3 | 233 | if (result != ISha256MacCoproc::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 234 | { |
IanBenzMaxim | 74:23be10c32fa3 | 235 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 236 | } |
IanBenzMaxim | 74:23be10c32fa3 | 237 | cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 238 | |
IanBenzMaxim | 74:23be10c32fa3 | 239 | // send the MAC |
IanBenzMaxim | 74:23be10c32fa3 | 240 | m_OW_master.OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 74:23be10c32fa3 | 241 | |
IanBenzMaxim | 74:23be10c32fa3 | 242 | // Read CRC and CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 243 | m_OW_master.OWReadBlock(&buf[cnt], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 244 | cnt += 3; |
IanBenzMaxim | 25:bdb1c5a53b58 | 245 | |
IanBenzMaxim | 74:23be10c32fa3 | 246 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 247 | if (OneWireMaster::calculateCrc16(buf, 0, (cnt - 1), OneWireMaster::calculateCrc16(mac, 0, mac.length)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 248 | { |
IanBenzMaxim | 74:23be10c32fa3 | 249 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 250 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 251 | |
IanBenzMaxim | 74:23be10c32fa3 | 252 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 253 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 254 | { |
IanBenzMaxim | 74:23be10c32fa3 | 255 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 256 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 257 | |
IanBenzMaxim | 74:23be10c32fa3 | 258 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 259 | // DATASHEET_CORRECTION - last bit in release is a read-zero so don't check echo of write byte |
IanBenzMaxim | 74:23be10c32fa3 | 260 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 261 | |
IanBenzMaxim | 74:23be10c32fa3 | 262 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 263 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 264 | |
IanBenzMaxim | 74:23be10c32fa3 | 265 | // disable strong pullup |
IanBenzMaxim | 75:8b627804927c | 266 | m_OW_master.OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 267 | |
IanBenzMaxim | 74:23be10c32fa3 | 268 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 269 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 270 | |
IanBenzMaxim | 74:23be10c32fa3 | 271 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 272 | { |
IanBenzMaxim | 74:23be10c32fa3 | 273 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 274 | } |
IanBenzMaxim | 74:23be10c32fa3 | 275 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 276 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 277 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 278 | |
IanBenzMaxim | 74:23be10c32fa3 | 279 | OneWireSlave::CmdResult DS28E15_22_25::writeBlockProtection(const BlockProtection & protection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 280 | { |
IanBenzMaxim | 74:23be10c32fa3 | 281 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 282 | int cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 283 | |
IanBenzMaxim | 75:8b627804927c | 284 | buf[cnt++] = WriteBlockProtection; |
IanBenzMaxim | 25:bdb1c5a53b58 | 285 | |
IanBenzMaxim | 74:23be10c32fa3 | 286 | // compute parameter byte |
IanBenzMaxim | 74:23be10c32fa3 | 287 | buf[cnt++] = protection.statusByte(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 288 | |
IanBenzMaxim | 74:23be10c32fa3 | 289 | m_OW_master.OWWriteBlock(&buf[0], cnt); |
IanBenzMaxim | 25:bdb1c5a53b58 | 290 | |
IanBenzMaxim | 74:23be10c32fa3 | 291 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 292 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 293 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 294 | |
IanBenzMaxim | 74:23be10c32fa3 | 295 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 296 | if (OneWireMaster::calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 297 | { |
IanBenzMaxim | 74:23be10c32fa3 | 298 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 299 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 300 | |
IanBenzMaxim | 74:23be10c32fa3 | 301 | // sent release |
IanBenzMaxim | 74:23be10c32fa3 | 302 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 303 | |
IanBenzMaxim | 74:23be10c32fa3 | 304 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 305 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 306 | |
IanBenzMaxim | 74:23be10c32fa3 | 307 | // disable strong pullup |
IanBenzMaxim | 75:8b627804927c | 308 | m_OW_master.OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 309 | |
IanBenzMaxim | 74:23be10c32fa3 | 310 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 311 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 312 | |
IanBenzMaxim | 74:23be10c32fa3 | 313 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 314 | { |
IanBenzMaxim | 74:23be10c32fa3 | 315 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 316 | } |
IanBenzMaxim | 74:23be10c32fa3 | 317 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 318 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 319 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 320 | |
IanBenzMaxim | 34:11fffbe98ef9 | 321 | OneWireSlave::CmdResult DS28E15_22_25::readBlockProtection(unsigned int blockNum, BlockProtection & protection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 322 | { |
IanBenzMaxim | 74:23be10c32fa3 | 323 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 324 | CmdResult result = readStatus(false, false, blockNum, &buf); |
IanBenzMaxim | 74:23be10c32fa3 | 325 | if (result == Success) |
IanBenzMaxim | 74:23be10c32fa3 | 326 | { |
IanBenzMaxim | 74:23be10c32fa3 | 327 | protection.setStatusByte(buf); |
IanBenzMaxim | 74:23be10c32fa3 | 328 | } |
IanBenzMaxim | 74:23be10c32fa3 | 329 | return result; |
IanBenzMaxim | 25:bdb1c5a53b58 | 330 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 331 | |
IanBenzMaxim | 74:23be10c32fa3 | 332 | template <DS28E15_22_25::ProtectionBlocks blocks> OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[blocks]) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 333 | { |
IanBenzMaxim | 74:23be10c32fa3 | 334 | uint8_t buf[blocks]; |
IanBenzMaxim | 74:23be10c32fa3 | 335 | CmdResult result = readStatus(false, true, 0, buf); |
IanBenzMaxim | 74:23be10c32fa3 | 336 | if (result == Success) |
IanBenzMaxim | 74:23be10c32fa3 | 337 | { |
IanBenzMaxim | 74:23be10c32fa3 | 338 | for (size_t i = 0; i < blocks; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 339 | { |
IanBenzMaxim | 74:23be10c32fa3 | 340 | protection[i].setStatusByte(buf[i]); |
IanBenzMaxim | 74:23be10c32fa3 | 341 | } |
IanBenzMaxim | 74:23be10c32fa3 | 342 | } |
IanBenzMaxim | 74:23be10c32fa3 | 343 | return result; |
IanBenzMaxim | 50:e967f9befbd0 | 344 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 345 | |
IanBenzMaxim | 75:8b627804927c | 346 | OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[DS28E15_Blocks]) const |
IanBenzMaxim | 50:e967f9befbd0 | 347 | { |
IanBenzMaxim | 75:8b627804927c | 348 | return readAllBlockProtection<DS28E15_Blocks>(protection); |
IanBenzMaxim | 50:e967f9befbd0 | 349 | } |
IanBenzMaxim | 50:e967f9befbd0 | 350 | |
IanBenzMaxim | 75:8b627804927c | 351 | OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[DS28E25_Blocks]) const |
IanBenzMaxim | 50:e967f9befbd0 | 352 | { |
IanBenzMaxim | 75:8b627804927c | 353 | return readAllBlockProtection<DS28E25_Blocks>(protection); |
IanBenzMaxim | 50:e967f9befbd0 | 354 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 355 | |
IanBenzMaxim | 51:a65f031e997b | 356 | OneWireSlave::CmdResult DS28E15_22_25::readPersonality(Personality & personality) const |
IanBenzMaxim | 50:e967f9befbd0 | 357 | { |
IanBenzMaxim | 74:23be10c32fa3 | 358 | return readStatus(true, false, 0, personality.bytes); |
IanBenzMaxim | 50:e967f9befbd0 | 359 | } |
IanBenzMaxim | 50:e967f9befbd0 | 360 | |
IanBenzMaxim | 73:2cecc1372acc | 361 | OneWireSlave::CmdResult DS28E15_22_25::readStatus(bool personality, bool allpages, unsigned int blockNum, uint8_t * rdbuf) const |
IanBenzMaxim | 50:e967f9befbd0 | 362 | { |
IanBenzMaxim | 74:23be10c32fa3 | 363 | const size_t crcLen = 4, ds28e22_25_pagesPerBlock = 2; |
IanBenzMaxim | 74:23be10c32fa3 | 364 | |
IanBenzMaxim | 74:23be10c32fa3 | 365 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 366 | size_t cnt = 0, offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 367 | |
IanBenzMaxim | 75:8b627804927c | 368 | buf[cnt++] = ReadStatus; |
IanBenzMaxim | 74:23be10c32fa3 | 369 | if (personality) |
IanBenzMaxim | 74:23be10c32fa3 | 370 | { |
IanBenzMaxim | 74:23be10c32fa3 | 371 | buf[cnt++] = 0xE0; |
IanBenzMaxim | 74:23be10c32fa3 | 372 | } |
IanBenzMaxim | 74:23be10c32fa3 | 373 | else if (allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 374 | { |
IanBenzMaxim | 74:23be10c32fa3 | 375 | buf[cnt++] = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 376 | } |
IanBenzMaxim | 74:23be10c32fa3 | 377 | else |
IanBenzMaxim | 74:23be10c32fa3 | 378 | { |
IanBenzMaxim | 74:23be10c32fa3 | 379 | // Convert to page number for DS28E22 and DS28E25 |
IanBenzMaxim | 74:23be10c32fa3 | 380 | buf[cnt] = blockNum; |
IanBenzMaxim | 75:8b627804927c | 381 | if ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 382 | { |
IanBenzMaxim | 74:23be10c32fa3 | 383 | buf[cnt] *= ds28e22_25_pagesPerBlock; |
IanBenzMaxim | 74:23be10c32fa3 | 384 | } |
IanBenzMaxim | 74:23be10c32fa3 | 385 | cnt++; |
IanBenzMaxim | 74:23be10c32fa3 | 386 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 387 | |
IanBenzMaxim | 74:23be10c32fa3 | 388 | // send the command |
IanBenzMaxim | 74:23be10c32fa3 | 389 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 50:e967f9befbd0 | 390 | |
IanBenzMaxim | 74:23be10c32fa3 | 391 | offset = cnt + 2; |
IanBenzMaxim | 50:e967f9befbd0 | 392 | |
IanBenzMaxim | 74:23be10c32fa3 | 393 | // Set data length |
IanBenzMaxim | 74:23be10c32fa3 | 394 | size_t rdnum; |
IanBenzMaxim | 74:23be10c32fa3 | 395 | if (personality) |
IanBenzMaxim | 74:23be10c32fa3 | 396 | { |
IanBenzMaxim | 74:23be10c32fa3 | 397 | rdnum = 4; |
IanBenzMaxim | 74:23be10c32fa3 | 398 | } |
IanBenzMaxim | 74:23be10c32fa3 | 399 | else if (!allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 400 | { |
IanBenzMaxim | 74:23be10c32fa3 | 401 | rdnum = 1; |
IanBenzMaxim | 74:23be10c32fa3 | 402 | } |
IanBenzMaxim | 75:8b627804927c | 403 | else if ((romId.familyCode() == DS28E22_Family) || (romId.familyCode() == DS28E25_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 404 | { |
IanBenzMaxim | 75:8b627804927c | 405 | rdnum = DS28E25_Pages; // Need to read extra data on DS28E22 to get CRC16. |
IanBenzMaxim | 74:23be10c32fa3 | 406 | } |
IanBenzMaxim | 74:23be10c32fa3 | 407 | else // DS28E15 |
IanBenzMaxim | 74:23be10c32fa3 | 408 | { |
IanBenzMaxim | 75:8b627804927c | 409 | rdnum = DS28E15_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 410 | } |
IanBenzMaxim | 74:23be10c32fa3 | 411 | rdnum += crcLen; // Add in CRC length |
IanBenzMaxim | 50:e967f9befbd0 | 412 | |
IanBenzMaxim | 74:23be10c32fa3 | 413 | // Read the bytes |
IanBenzMaxim | 74:23be10c32fa3 | 414 | m_OW_master.OWReadBlock(&buf[cnt], rdnum); |
IanBenzMaxim | 74:23be10c32fa3 | 415 | cnt += rdnum; |
IanBenzMaxim | 50:e967f9befbd0 | 416 | |
IanBenzMaxim | 74:23be10c32fa3 | 417 | // check the first CRC16 |
IanBenzMaxim | 75:8b627804927c | 418 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 419 | { |
IanBenzMaxim | 74:23be10c32fa3 | 420 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 421 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 422 | |
IanBenzMaxim | 74:23be10c32fa3 | 423 | if (personality || allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 424 | { |
IanBenzMaxim | 74:23be10c32fa3 | 425 | // check the second CRC16 |
IanBenzMaxim | 75:8b627804927c | 426 | if (OneWireMaster::calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 427 | { |
IanBenzMaxim | 74:23be10c32fa3 | 428 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 429 | } |
IanBenzMaxim | 74:23be10c32fa3 | 430 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 431 | |
IanBenzMaxim | 74:23be10c32fa3 | 432 | // copy the data to the read buffer |
IanBenzMaxim | 74:23be10c32fa3 | 433 | rdnum -= crcLen; |
IanBenzMaxim | 75:8b627804927c | 434 | if (allpages && ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family))) |
IanBenzMaxim | 50:e967f9befbd0 | 435 | { |
IanBenzMaxim | 75:8b627804927c | 436 | if (romId.familyCode() == DS28E22_Family) |
IanBenzMaxim | 74:23be10c32fa3 | 437 | { |
IanBenzMaxim | 75:8b627804927c | 438 | rdnum -= (DS28E25_Pages - DS28E22_Pages); |
IanBenzMaxim | 74:23be10c32fa3 | 439 | } |
IanBenzMaxim | 74:23be10c32fa3 | 440 | |
IanBenzMaxim | 74:23be10c32fa3 | 441 | for (size_t i = 0; i < (rdnum / ds28e22_25_pagesPerBlock); i++) |
IanBenzMaxim | 74:23be10c32fa3 | 442 | { |
IanBenzMaxim | 74:23be10c32fa3 | 443 | rdbuf[i] = (buf[offset + (i * ds28e22_25_pagesPerBlock)] & 0xF0); // Upper nibble |
IanBenzMaxim | 74:23be10c32fa3 | 444 | rdbuf[i] |= ((buf[offset + (i * ds28e22_25_pagesPerBlock)] & 0x0F) / ds28e22_25_pagesPerBlock); // Lower nibble |
IanBenzMaxim | 74:23be10c32fa3 | 445 | } |
IanBenzMaxim | 50:e967f9befbd0 | 446 | } |
IanBenzMaxim | 74:23be10c32fa3 | 447 | else |
IanBenzMaxim | 74:23be10c32fa3 | 448 | { |
IanBenzMaxim | 74:23be10c32fa3 | 449 | std::memcpy(rdbuf, &buf[offset], rdnum); |
IanBenzMaxim | 74:23be10c32fa3 | 450 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 451 | |
IanBenzMaxim | 74:23be10c32fa3 | 452 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 453 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 454 | |
IanBenzMaxim | 73:2cecc1372acc | 455 | ISha256MacCoproc::CmdResult DS28E15_22_25::computeAuthMac(const ISha256MacCoproc & MacCoproc, const Page & pageData, unsigned int pageNum, const Scratchpad & challenge, const RomId & romId, const ManId & manId, Mac & mac) |
IanBenzMaxim | 25:bdb1c5a53b58 | 456 | { |
IanBenzMaxim | 74:23be10c32fa3 | 457 | ISha256MacCoproc::AuthMacData authMacData; |
IanBenzMaxim | 49:36954b62f503 | 458 | |
IanBenzMaxim | 74:23be10c32fa3 | 459 | // insert ROM number or FF |
IanBenzMaxim | 74:23be10c32fa3 | 460 | std::memcpy(authMacData, romId, RomId::byteLen); |
IanBenzMaxim | 49:36954b62f503 | 461 | |
IanBenzMaxim | 74:23be10c32fa3 | 462 | authMacData[10] = pageNum; |
IanBenzMaxim | 25:bdb1c5a53b58 | 463 | |
IanBenzMaxim | 74:23be10c32fa3 | 464 | authMacData[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 465 | authMacData[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 466 | |
IanBenzMaxim | 74:23be10c32fa3 | 467 | authMacData[11] = 0x00; |
IanBenzMaxim | 25:bdb1c5a53b58 | 468 | |
IanBenzMaxim | 74:23be10c32fa3 | 469 | return MacCoproc.computeAuthMac(ISha256MacCoproc::DevicePage(pageData), challenge, authMacData, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 470 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 471 | |
IanBenzMaxim | 73:2cecc1372acc | 472 | ISha256MacCoproc::CmdResult DS28E15_22_25::computeAuthMacAnon(const ISha256MacCoproc & MacCoproc, const Page & pageData, unsigned int pageNum, const Scratchpad & challenge, const ManId & manId, Mac & mac) |
IanBenzMaxim | 49:36954b62f503 | 473 | { |
IanBenzMaxim | 74:23be10c32fa3 | 474 | RomId romId; |
IanBenzMaxim | 74:23be10c32fa3 | 475 | std::memset(romId, 0xFF, RomId::byteLen); |
IanBenzMaxim | 74:23be10c32fa3 | 476 | return computeAuthMac(MacCoproc, pageData, pageNum, challenge, romId, manId, mac); |
IanBenzMaxim | 49:36954b62f503 | 477 | } |
IanBenzMaxim | 49:36954b62f503 | 478 | |
IanBenzMaxim | 74:23be10c32fa3 | 479 | OneWireSlave::CmdResult DS28E15_22_25::computeReadPageMac(unsigned int page_num, bool anon, Mac & mac) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 480 | { |
IanBenzMaxim | 74:23be10c32fa3 | 481 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 482 | int cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 483 | |
IanBenzMaxim | 75:8b627804927c | 484 | buf[cnt++] = ComputePageMac; |
IanBenzMaxim | 74:23be10c32fa3 | 485 | buf[cnt++] = ((anon) ? 0xE0 : 0x00) | page_num; |
IanBenzMaxim | 74:23be10c32fa3 | 486 | |
IanBenzMaxim | 74:23be10c32fa3 | 487 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 488 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 489 | |
IanBenzMaxim | 74:23be10c32fa3 | 490 | // read first CRC byte |
IanBenzMaxim | 74:23be10c32fa3 | 491 | m_OW_master.OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 492 | |
IanBenzMaxim | 74:23be10c32fa3 | 493 | // read the last CRC and enable |
IanBenzMaxim | 74:23be10c32fa3 | 494 | m_OW_master.OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 495 | |
IanBenzMaxim | 74:23be10c32fa3 | 496 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 497 | wait_ms(shaComputationDelayMs * 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 498 | |
IanBenzMaxim | 74:23be10c32fa3 | 499 | // disable strong pullup |
IanBenzMaxim | 75:8b627804927c | 500 | m_OW_master.OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 501 | |
IanBenzMaxim | 74:23be10c32fa3 | 502 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 503 | if (OneWireMaster::calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 504 | { |
IanBenzMaxim | 74:23be10c32fa3 | 505 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 506 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 507 | |
IanBenzMaxim | 74:23be10c32fa3 | 508 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 509 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 74:23be10c32fa3 | 510 | if (cs != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 511 | { |
IanBenzMaxim | 74:23be10c32fa3 | 512 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 513 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 514 | |
IanBenzMaxim | 74:23be10c32fa3 | 515 | // read the MAC and CRC |
IanBenzMaxim | 74:23be10c32fa3 | 516 | m_OW_master.OWReadBlock(&buf[0], (Mac::length + 2)); |
IanBenzMaxim | 25:bdb1c5a53b58 | 517 | |
IanBenzMaxim | 74:23be10c32fa3 | 518 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 519 | if (OneWireMaster::calculateCrc16(buf, 0, (Mac::length + 2)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 520 | { |
IanBenzMaxim | 74:23be10c32fa3 | 521 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 522 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 523 | |
IanBenzMaxim | 74:23be10c32fa3 | 524 | // copy MAC to return buffer |
IanBenzMaxim | 74:23be10c32fa3 | 525 | std::memcpy(mac, buf, Mac::length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 526 | |
IanBenzMaxim | 74:23be10c32fa3 | 527 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 528 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 529 | |
IanBenzMaxim | 74:23be10c32fa3 | 530 | OneWireSlave::CmdResult DS28E15_22_25::computeSecret(unsigned int page_num, bool lock) |
IanBenzMaxim | 25:bdb1c5a53b58 | 531 | { |
IanBenzMaxim | 74:23be10c32fa3 | 532 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 533 | int cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 534 | |
IanBenzMaxim | 75:8b627804927c | 535 | buf[cnt++] = ComputeAndLockSecret; |
IanBenzMaxim | 74:23be10c32fa3 | 536 | buf[cnt++] = (lock) ? (0xE0 | page_num) : page_num; // lock flag |
IanBenzMaxim | 25:bdb1c5a53b58 | 537 | |
IanBenzMaxim | 74:23be10c32fa3 | 538 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 539 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 540 | |
IanBenzMaxim | 74:23be10c32fa3 | 541 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 542 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 543 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 544 | |
IanBenzMaxim | 74:23be10c32fa3 | 545 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 546 | if (OneWireMaster::calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 547 | { |
IanBenzMaxim | 74:23be10c32fa3 | 548 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 549 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 550 | |
IanBenzMaxim | 74:23be10c32fa3 | 551 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 552 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 553 | |
IanBenzMaxim | 74:23be10c32fa3 | 554 | // now wait for the MAC computations and secret programming. |
IanBenzMaxim | 74:23be10c32fa3 | 555 | wait_ms(shaComputationDelayMs * 2 + secretEepromWriteDelayMs()); |
IanBenzMaxim | 25:bdb1c5a53b58 | 556 | |
IanBenzMaxim | 74:23be10c32fa3 | 557 | // disable strong pullup |
IanBenzMaxim | 75:8b627804927c | 558 | m_OW_master.OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 559 | |
IanBenzMaxim | 74:23be10c32fa3 | 560 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 561 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 562 | |
IanBenzMaxim | 74:23be10c32fa3 | 563 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 564 | { |
IanBenzMaxim | 74:23be10c32fa3 | 565 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 566 | } |
IanBenzMaxim | 74:23be10c32fa3 | 567 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 568 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 569 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 570 | |
IanBenzMaxim | 34:11fffbe98ef9 | 571 | OneWireSlave::CmdResult DS28E15_22_25::writeScratchpad(const Scratchpad & data) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 572 | { |
IanBenzMaxim | 74:23be10c32fa3 | 573 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 574 | int cnt = 0, offset; |
IanBenzMaxim | 25:bdb1c5a53b58 | 575 | |
IanBenzMaxim | 75:8b627804927c | 576 | buf[cnt++] = ReadWriteScratchpad; |
IanBenzMaxim | 75:8b627804927c | 577 | if ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 578 | { |
IanBenzMaxim | 74:23be10c32fa3 | 579 | buf[cnt++] = 0x20; |
IanBenzMaxim | 74:23be10c32fa3 | 580 | } |
IanBenzMaxim | 74:23be10c32fa3 | 581 | else |
IanBenzMaxim | 74:23be10c32fa3 | 582 | { |
IanBenzMaxim | 74:23be10c32fa3 | 583 | buf[cnt++] = 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 584 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 585 | |
IanBenzMaxim | 74:23be10c32fa3 | 586 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 587 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 588 | |
IanBenzMaxim | 74:23be10c32fa3 | 589 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 590 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 591 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 592 | |
IanBenzMaxim | 74:23be10c32fa3 | 593 | offset = cnt; |
IanBenzMaxim | 25:bdb1c5a53b58 | 594 | |
IanBenzMaxim | 74:23be10c32fa3 | 595 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 596 | std::memcpy(&buf[cnt], data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 597 | cnt += data.length; |
IanBenzMaxim | 25:bdb1c5a53b58 | 598 | |
IanBenzMaxim | 74:23be10c32fa3 | 599 | // Send the data |
IanBenzMaxim | 74:23be10c32fa3 | 600 | m_OW_master.OWWriteBlock(data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 601 | |
IanBenzMaxim | 74:23be10c32fa3 | 602 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 603 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 604 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 605 | |
IanBenzMaxim | 74:23be10c32fa3 | 606 | // check first CRC16 |
IanBenzMaxim | 75:8b627804927c | 607 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 608 | { |
IanBenzMaxim | 74:23be10c32fa3 | 609 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 610 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 611 | |
IanBenzMaxim | 74:23be10c32fa3 | 612 | // check the second CRC16 |
IanBenzMaxim | 75:8b627804927c | 613 | if (OneWireMaster::calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 614 | { |
IanBenzMaxim | 74:23be10c32fa3 | 615 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 616 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 617 | |
IanBenzMaxim | 74:23be10c32fa3 | 618 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 619 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 620 | |
IanBenzMaxim | 49:36954b62f503 | 621 | OneWireSlave::CmdResult DS28E15_22_25::readScratchpad(Scratchpad & data) const |
IanBenzMaxim | 49:36954b62f503 | 622 | { |
IanBenzMaxim | 74:23be10c32fa3 | 623 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 624 | int cnt = 0, offset; |
IanBenzMaxim | 49:36954b62f503 | 625 | |
IanBenzMaxim | 75:8b627804927c | 626 | buf[cnt++] = ReadWriteScratchpad; |
IanBenzMaxim | 75:8b627804927c | 627 | if ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 628 | { |
IanBenzMaxim | 74:23be10c32fa3 | 629 | buf[cnt++] = 0x2F; |
IanBenzMaxim | 74:23be10c32fa3 | 630 | } |
IanBenzMaxim | 74:23be10c32fa3 | 631 | else |
IanBenzMaxim | 74:23be10c32fa3 | 632 | { |
IanBenzMaxim | 74:23be10c32fa3 | 633 | buf[cnt++] = 0x0F; |
IanBenzMaxim | 74:23be10c32fa3 | 634 | } |
IanBenzMaxim | 49:36954b62f503 | 635 | |
IanBenzMaxim | 74:23be10c32fa3 | 636 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 637 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 49:36954b62f503 | 638 | |
IanBenzMaxim | 74:23be10c32fa3 | 639 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 640 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 641 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 642 | |
IanBenzMaxim | 74:23be10c32fa3 | 643 | offset = cnt; |
IanBenzMaxim | 49:36954b62f503 | 644 | |
IanBenzMaxim | 74:23be10c32fa3 | 645 | // Receive the data |
IanBenzMaxim | 74:23be10c32fa3 | 646 | m_OW_master.OWReadBlock(&buf[cnt], data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 647 | cnt += data.length; |
IanBenzMaxim | 74:23be10c32fa3 | 648 | |
IanBenzMaxim | 74:23be10c32fa3 | 649 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 650 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 651 | cnt += 2; |
IanBenzMaxim | 49:36954b62f503 | 652 | |
IanBenzMaxim | 74:23be10c32fa3 | 653 | // check first CRC16 |
IanBenzMaxim | 75:8b627804927c | 654 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 655 | { |
IanBenzMaxim | 74:23be10c32fa3 | 656 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 657 | } |
IanBenzMaxim | 49:36954b62f503 | 658 | |
IanBenzMaxim | 74:23be10c32fa3 | 659 | // check the second CRC16 |
IanBenzMaxim | 75:8b627804927c | 660 | if (OneWireMaster::calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 661 | { |
IanBenzMaxim | 74:23be10c32fa3 | 662 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 663 | } |
IanBenzMaxim | 49:36954b62f503 | 664 | |
IanBenzMaxim | 74:23be10c32fa3 | 665 | // Copy to output |
IanBenzMaxim | 74:23be10c32fa3 | 666 | std::memcpy(data, &buf[offset], data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 667 | |
IanBenzMaxim | 74:23be10c32fa3 | 668 | return Success; |
IanBenzMaxim | 49:36954b62f503 | 669 | } |
IanBenzMaxim | 49:36954b62f503 | 670 | |
IanBenzMaxim | 34:11fffbe98ef9 | 671 | OneWireSlave::CmdResult DS28E15_22_25::loadSecret(bool lock) |
IanBenzMaxim | 25:bdb1c5a53b58 | 672 | { |
IanBenzMaxim | 74:23be10c32fa3 | 673 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 674 | int cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 675 | |
IanBenzMaxim | 75:8b627804927c | 676 | buf[cnt++] = LoadAndLockSecret; |
IanBenzMaxim | 74:23be10c32fa3 | 677 | buf[cnt++] = (lock) ? 0xE0 : 0x00; // lock flag |
IanBenzMaxim | 74:23be10c32fa3 | 678 | |
IanBenzMaxim | 74:23be10c32fa3 | 679 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 680 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 681 | |
IanBenzMaxim | 74:23be10c32fa3 | 682 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 683 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 684 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 685 | |
IanBenzMaxim | 74:23be10c32fa3 | 686 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 687 | if (OneWireMaster::calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 688 | { |
IanBenzMaxim | 74:23be10c32fa3 | 689 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 690 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 691 | |
IanBenzMaxim | 74:23be10c32fa3 | 692 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 693 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 694 | |
IanBenzMaxim | 74:23be10c32fa3 | 695 | // now wait for the secret programming. |
IanBenzMaxim | 74:23be10c32fa3 | 696 | wait_ms(secretEepromWriteDelayMs()); |
IanBenzMaxim | 74:23be10c32fa3 | 697 | |
IanBenzMaxim | 74:23be10c32fa3 | 698 | // disable strong pullup |
IanBenzMaxim | 75:8b627804927c | 699 | m_OW_master.OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 700 | |
IanBenzMaxim | 74:23be10c32fa3 | 701 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 702 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 703 | |
IanBenzMaxim | 74:23be10c32fa3 | 704 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 705 | { |
IanBenzMaxim | 74:23be10c32fa3 | 706 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 707 | } |
IanBenzMaxim | 74:23be10c32fa3 | 708 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 709 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 710 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 711 | |
IanBenzMaxim | 74:23be10c32fa3 | 712 | OneWireSlave::CmdResult DS28E15_22_25::readPage(unsigned int page, Page & rdbuf, bool continuing) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 713 | { |
IanBenzMaxim | 74:23be10c32fa3 | 714 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 715 | int cnt, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 716 | |
IanBenzMaxim | 74:23be10c32fa3 | 717 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 718 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 719 | |
IanBenzMaxim | 74:23be10c32fa3 | 720 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 721 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 722 | { |
IanBenzMaxim | 75:8b627804927c | 723 | buf[cnt++] = ReadMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 724 | buf[cnt++] = page; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 725 | |
IanBenzMaxim | 74:23be10c32fa3 | 726 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 727 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 728 | |
IanBenzMaxim | 74:23be10c32fa3 | 729 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 730 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 731 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 732 | |
IanBenzMaxim | 74:23be10c32fa3 | 733 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 734 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 735 | |
IanBenzMaxim | 74:23be10c32fa3 | 736 | // read data and CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 737 | m_OW_master.OWReadBlock(&buf[cnt], (rdbuf.length + 2)); |
IanBenzMaxim | 74:23be10c32fa3 | 738 | cnt += 34; |
IanBenzMaxim | 25:bdb1c5a53b58 | 739 | |
IanBenzMaxim | 74:23be10c32fa3 | 740 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 741 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 742 | { |
IanBenzMaxim | 75:8b627804927c | 743 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 744 | { |
IanBenzMaxim | 74:23be10c32fa3 | 745 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 746 | } |
IanBenzMaxim | 74:23be10c32fa3 | 747 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 748 | |
IanBenzMaxim | 74:23be10c32fa3 | 749 | // check the second CRC16 |
IanBenzMaxim | 75:8b627804927c | 750 | if (OneWireMaster::calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 751 | { |
IanBenzMaxim | 74:23be10c32fa3 | 752 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 753 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 754 | |
IanBenzMaxim | 74:23be10c32fa3 | 755 | // copy the data to the read buffer |
IanBenzMaxim | 74:23be10c32fa3 | 756 | std::memcpy(rdbuf, &buf[offset], rdbuf.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 757 | |
IanBenzMaxim | 74:23be10c32fa3 | 758 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 759 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 760 | |
IanBenzMaxim | 74:23be10c32fa3 | 761 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthSegmentMac(unsigned int pageNum, unsigned int segmentNum, const Segment & newData, const Mac & mac, bool continuing) |
IanBenzMaxim | 25:bdb1c5a53b58 | 762 | { |
IanBenzMaxim | 74:23be10c32fa3 | 763 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 764 | int cnt, i, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 765 | |
IanBenzMaxim | 74:23be10c32fa3 | 766 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 767 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 768 | |
IanBenzMaxim | 74:23be10c32fa3 | 769 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 770 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 771 | { |
IanBenzMaxim | 75:8b627804927c | 772 | buf[cnt++] = AuthWriteMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 773 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 774 | |
IanBenzMaxim | 74:23be10c32fa3 | 775 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 776 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 777 | |
IanBenzMaxim | 74:23be10c32fa3 | 778 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 779 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 780 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 781 | |
IanBenzMaxim | 74:23be10c32fa3 | 782 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 783 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 784 | |
IanBenzMaxim | 74:23be10c32fa3 | 785 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 786 | for (i = 0; i < newData.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 787 | { |
IanBenzMaxim | 74:23be10c32fa3 | 788 | buf[cnt++] = newData[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 789 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 790 | |
IanBenzMaxim | 74:23be10c32fa3 | 791 | // Send data |
IanBenzMaxim | 74:23be10c32fa3 | 792 | m_OW_master.OWWriteBlock(newData, newData.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 793 | |
IanBenzMaxim | 74:23be10c32fa3 | 794 | // read first CRC byte |
IanBenzMaxim | 74:23be10c32fa3 | 795 | m_OW_master.OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 796 | |
IanBenzMaxim | 74:23be10c32fa3 | 797 | // read the last CRC and enable power |
IanBenzMaxim | 74:23be10c32fa3 | 798 | m_OW_master.OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 799 | |
IanBenzMaxim | 74:23be10c32fa3 | 800 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 801 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 802 | |
IanBenzMaxim | 74:23be10c32fa3 | 803 | // disable strong pullup |
IanBenzMaxim | 75:8b627804927c | 804 | m_OW_master.OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 805 | |
IanBenzMaxim | 74:23be10c32fa3 | 806 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 807 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 808 | { |
IanBenzMaxim | 75:8b627804927c | 809 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 810 | { |
IanBenzMaxim | 74:23be10c32fa3 | 811 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 812 | } |
IanBenzMaxim | 74:23be10c32fa3 | 813 | } |
IanBenzMaxim | 74:23be10c32fa3 | 814 | |
IanBenzMaxim | 74:23be10c32fa3 | 815 | // check the second CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 816 | unsigned short CRC16 = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 817 | |
IanBenzMaxim | 74:23be10c32fa3 | 818 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
IanBenzMaxim | 75:8b627804927c | 819 | if ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 820 | { |
IanBenzMaxim | 74:23be10c32fa3 | 821 | if (continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 822 | { |
IanBenzMaxim | 75:8b627804927c | 823 | CRC16 = OneWireMaster::calculateCrc16(CRC16, 0xAA); |
IanBenzMaxim | 74:23be10c32fa3 | 824 | } |
IanBenzMaxim | 74:23be10c32fa3 | 825 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 826 | |
IanBenzMaxim | 75:8b627804927c | 827 | CRC16 = OneWireMaster::calculateCrc16(buf, offset, (cnt - offset), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 828 | |
IanBenzMaxim | 74:23be10c32fa3 | 829 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 830 | { |
IanBenzMaxim | 74:23be10c32fa3 | 831 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 832 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 833 | |
IanBenzMaxim | 74:23be10c32fa3 | 834 | // transmit MAC as a block |
IanBenzMaxim | 74:23be10c32fa3 | 835 | m_OW_master.OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 836 | |
IanBenzMaxim | 74:23be10c32fa3 | 837 | // calculate CRC on MAC |
IanBenzMaxim | 75:8b627804927c | 838 | CRC16 = OneWireMaster::calculateCrc16(mac, 0, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 839 | |
IanBenzMaxim | 74:23be10c32fa3 | 840 | // append read of CRC16 and CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 841 | m_OW_master.OWReadBlock(&buf[0], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 842 | cnt = 3; |
IanBenzMaxim | 74:23be10c32fa3 | 843 | |
IanBenzMaxim | 74:23be10c32fa3 | 844 | // ckeck CRC16 |
IanBenzMaxim | 75:8b627804927c | 845 | CRC16 = OneWireMaster::calculateCrc16(buf, 0, (cnt - 1), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 846 | |
IanBenzMaxim | 74:23be10c32fa3 | 847 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 848 | { |
IanBenzMaxim | 74:23be10c32fa3 | 849 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 850 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 851 | |
IanBenzMaxim | 74:23be10c32fa3 | 852 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 853 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 854 | { |
IanBenzMaxim | 74:23be10c32fa3 | 855 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 856 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 857 | |
IanBenzMaxim | 74:23be10c32fa3 | 858 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 859 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 860 | |
IanBenzMaxim | 74:23be10c32fa3 | 861 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 862 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 863 | |
IanBenzMaxim | 74:23be10c32fa3 | 864 | // disable strong pullup |
IanBenzMaxim | 75:8b627804927c | 865 | m_OW_master.OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 866 | |
IanBenzMaxim | 74:23be10c32fa3 | 867 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 868 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 869 | |
IanBenzMaxim | 74:23be10c32fa3 | 870 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 871 | { |
IanBenzMaxim | 74:23be10c32fa3 | 872 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 873 | } |
IanBenzMaxim | 74:23be10c32fa3 | 874 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 875 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 876 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 877 | |
IanBenzMaxim | 74:23be10c32fa3 | 878 | ISha256MacCoproc::CmdResult DS28E15_22_25::computeSegmentWriteMac(const ISha256MacCoproc & MacCoproc, unsigned int pageNum, unsigned int segmentNum, const Segment & newData, const Segment & oldData, const RomId & romId, const ManId & manId, Mac & mac) |
IanBenzMaxim | 25:bdb1c5a53b58 | 879 | { |
IanBenzMaxim | 74:23be10c32fa3 | 880 | ISha256MacCoproc::WriteMacData MT; |
IanBenzMaxim | 25:bdb1c5a53b58 | 881 | |
IanBenzMaxim | 74:23be10c32fa3 | 882 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 883 | std::memcpy(&MT[0], romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 884 | |
IanBenzMaxim | 74:23be10c32fa3 | 885 | MT[11] = segmentNum; |
IanBenzMaxim | 74:23be10c32fa3 | 886 | MT[10] = pageNum; |
IanBenzMaxim | 74:23be10c32fa3 | 887 | MT[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 888 | MT[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 889 | |
IanBenzMaxim | 74:23be10c32fa3 | 890 | // insert old data |
IanBenzMaxim | 74:23be10c32fa3 | 891 | std::memcpy(&MT[12], oldData, Segment::length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 892 | |
IanBenzMaxim | 74:23be10c32fa3 | 893 | // insert new data |
IanBenzMaxim | 74:23be10c32fa3 | 894 | std::memcpy(&MT[16], newData, Segment::length); |
IanBenzMaxim | 74:23be10c32fa3 | 895 | |
IanBenzMaxim | 74:23be10c32fa3 | 896 | return MacCoproc.computeWriteMac(MT, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 897 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 898 | |
IanBenzMaxim | 73:2cecc1372acc | 899 | ISha256MacCoproc::CmdResult DS28E15_22_25::computeProtectionWriteMac(const ISha256MacCoproc & MacCoproc, const BlockProtection & newProtection, const BlockProtection & oldProtection, const RomId & romId, const ManId & manId, Mac & mac) |
IanBenzMaxim | 25:bdb1c5a53b58 | 900 | { |
IanBenzMaxim | 74:23be10c32fa3 | 901 | ISha256MacCoproc::WriteMacData MT; |
IanBenzMaxim | 74:23be10c32fa3 | 902 | |
IanBenzMaxim | 74:23be10c32fa3 | 903 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 904 | std::memcpy(MT, romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 905 | |
IanBenzMaxim | 74:23be10c32fa3 | 906 | // instert block and page |
IanBenzMaxim | 74:23be10c32fa3 | 907 | MT[11] = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 908 | MT[10] = newProtection.blockNum(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 909 | |
IanBenzMaxim | 74:23be10c32fa3 | 910 | MT[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 911 | MT[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 912 | |
IanBenzMaxim | 74:23be10c32fa3 | 913 | // old data |
IanBenzMaxim | 74:23be10c32fa3 | 914 | MT[12] = oldProtection.authProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 915 | MT[13] = oldProtection.eepromEmulation() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 916 | MT[14] = oldProtection.writeProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 917 | MT[15] = oldProtection.readProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 918 | // new data |
IanBenzMaxim | 74:23be10c32fa3 | 919 | MT[16] = newProtection.authProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 920 | MT[17] = newProtection.eepromEmulation() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 921 | MT[18] = newProtection.writeProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 922 | MT[19] = newProtection.readProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 25:bdb1c5a53b58 | 923 | |
IanBenzMaxim | 74:23be10c32fa3 | 924 | // compute the mac |
IanBenzMaxim | 74:23be10c32fa3 | 925 | return MacCoproc.computeWriteMac(MT, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 926 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 927 | |
IanBenzMaxim | 73:2cecc1372acc | 928 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthSegment(const ISha256MacCoproc & MacCoproc, unsigned int pageNum, unsigned int segmentNum, const Segment & newData, const Segment & oldData, bool continuing) |
IanBenzMaxim | 25:bdb1c5a53b58 | 929 | { |
IanBenzMaxim | 74:23be10c32fa3 | 930 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 931 | int cnt, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 932 | |
IanBenzMaxim | 74:23be10c32fa3 | 933 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 934 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 935 | |
IanBenzMaxim | 74:23be10c32fa3 | 936 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 937 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 938 | { |
IanBenzMaxim | 75:8b627804927c | 939 | buf[cnt++] = AuthWriteMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 940 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
IanBenzMaxim | 74:23be10c32fa3 | 941 | |
IanBenzMaxim | 74:23be10c32fa3 | 942 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 943 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 944 | |
IanBenzMaxim | 74:23be10c32fa3 | 945 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 946 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 947 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 948 | |
IanBenzMaxim | 74:23be10c32fa3 | 949 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 950 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 951 | |
IanBenzMaxim | 74:23be10c32fa3 | 952 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 953 | for (size_t i = 0; i < newData.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 954 | { |
IanBenzMaxim | 74:23be10c32fa3 | 955 | buf[cnt++] = newData[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 956 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 957 | |
IanBenzMaxim | 74:23be10c32fa3 | 958 | // Send data |
IanBenzMaxim | 74:23be10c32fa3 | 959 | m_OW_master.OWWriteBlock(newData, newData.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 960 | |
IanBenzMaxim | 74:23be10c32fa3 | 961 | // read first CRC byte |
IanBenzMaxim | 74:23be10c32fa3 | 962 | m_OW_master.OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 963 | |
IanBenzMaxim | 74:23be10c32fa3 | 964 | // read the last CRC and enable power |
IanBenzMaxim | 74:23be10c32fa3 | 965 | m_OW_master.OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 966 | |
IanBenzMaxim | 74:23be10c32fa3 | 967 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 968 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 969 | |
IanBenzMaxim | 74:23be10c32fa3 | 970 | // disable strong pullup |
IanBenzMaxim | 75:8b627804927c | 971 | m_OW_master.OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 972 | |
IanBenzMaxim | 74:23be10c32fa3 | 973 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 974 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 975 | { |
IanBenzMaxim | 75:8b627804927c | 976 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 977 | { |
IanBenzMaxim | 74:23be10c32fa3 | 978 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 979 | } |
IanBenzMaxim | 74:23be10c32fa3 | 980 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 981 | |
IanBenzMaxim | 74:23be10c32fa3 | 982 | // check the second CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 983 | unsigned short CRC16 = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 984 | |
IanBenzMaxim | 74:23be10c32fa3 | 985 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
IanBenzMaxim | 75:8b627804927c | 986 | if ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 987 | { |
IanBenzMaxim | 74:23be10c32fa3 | 988 | if (continuing) |
IanBenzMaxim | 75:8b627804927c | 989 | CRC16 = OneWireMaster::calculateCrc16(CRC16, 0xAA); |
IanBenzMaxim | 74:23be10c32fa3 | 990 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 991 | |
IanBenzMaxim | 75:8b627804927c | 992 | CRC16 = OneWireMaster::calculateCrc16(buf, offset, (cnt - offset), CRC16); |
IanBenzMaxim | 74:23be10c32fa3 | 993 | |
IanBenzMaxim | 74:23be10c32fa3 | 994 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 995 | { |
IanBenzMaxim | 74:23be10c32fa3 | 996 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 997 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 998 | |
IanBenzMaxim | 25:bdb1c5a53b58 | 999 | // compute the mac |
IanBenzMaxim | 74:23be10c32fa3 | 1000 | ISha256MacCoproc::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 1001 | Mac mac; |
IanBenzMaxim | 74:23be10c32fa3 | 1002 | result = computeSegmentWriteMac(MacCoproc, pageNum, segmentNum, newData, oldData, romId, manId, mac); |
IanBenzMaxim | 74:23be10c32fa3 | 1003 | if (result != ISha256MacCoproc::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 1004 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1005 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 1006 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1007 | |
IanBenzMaxim | 74:23be10c32fa3 | 1008 | // transmit MAC as a block |
IanBenzMaxim | 74:23be10c32fa3 | 1009 | m_OW_master.OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 74:23be10c32fa3 | 1010 | |
IanBenzMaxim | 74:23be10c32fa3 | 1011 | // calculate CRC on MAC |
IanBenzMaxim | 75:8b627804927c | 1012 | CRC16 = OneWireMaster::calculateCrc16(mac, 0, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1013 | |
IanBenzMaxim | 74:23be10c32fa3 | 1014 | // append read of CRC16 and CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 1015 | m_OW_master.OWReadBlock(&buf[0], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 1016 | cnt = 3; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1017 | |
IanBenzMaxim | 74:23be10c32fa3 | 1018 | // ckeck CRC16 |
IanBenzMaxim | 75:8b627804927c | 1019 | CRC16 = OneWireMaster::calculateCrc16(buf, 0, (cnt - 1), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1020 | |
IanBenzMaxim | 74:23be10c32fa3 | 1021 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1022 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1023 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 1024 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1025 | |
IanBenzMaxim | 74:23be10c32fa3 | 1026 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 1027 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1028 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1029 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 1030 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1031 | |
IanBenzMaxim | 74:23be10c32fa3 | 1032 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 1033 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1034 | |
IanBenzMaxim | 74:23be10c32fa3 | 1035 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 1036 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1037 | |
IanBenzMaxim | 74:23be10c32fa3 | 1038 | // disable strong pullup |
IanBenzMaxim | 75:8b627804927c | 1039 | m_OW_master.OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1040 | |
IanBenzMaxim | 74:23be10c32fa3 | 1041 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 1042 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1043 | |
IanBenzMaxim | 74:23be10c32fa3 | 1044 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1045 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1046 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 1047 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1048 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 1049 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1050 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1051 | |
IanBenzMaxim | 50:e967f9befbd0 | 1052 | OneWireSlave::CmdResult DS28E15_22_25::readSegment(unsigned int page, unsigned int segment, Segment & data, bool continuing) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 1053 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1054 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 1055 | uint8_t buf[2]; |
IanBenzMaxim | 74:23be10c32fa3 | 1056 | |
IanBenzMaxim | 74:23be10c32fa3 | 1057 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1058 | { |
IanBenzMaxim | 75:8b627804927c | 1059 | buf[0] = ReadMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 1060 | buf[1] = (segment << 5) | page; |
IanBenzMaxim | 74:23be10c32fa3 | 1061 | |
IanBenzMaxim | 74:23be10c32fa3 | 1062 | // Transmit command |
IanBenzMaxim | 74:23be10c32fa3 | 1063 | m_OW_master.OWWriteBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1064 | |
IanBenzMaxim | 74:23be10c32fa3 | 1065 | // Receive CRC |
IanBenzMaxim | 74:23be10c32fa3 | 1066 | result = m_OW_master.OWReadBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1067 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1068 | else if (segment == 0) |
IanBenzMaxim | 74:23be10c32fa3 | 1069 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1070 | // Receive CRC from previous read |
IanBenzMaxim | 74:23be10c32fa3 | 1071 | result = m_OW_master.OWReadBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1072 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1073 | |
IanBenzMaxim | 74:23be10c32fa3 | 1074 | // Receive data |
IanBenzMaxim | 74:23be10c32fa3 | 1075 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 1076 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1077 | result = m_OW_master.OWReadBlock(data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 1078 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1079 | |
IanBenzMaxim | 74:23be10c32fa3 | 1080 | return (result == OneWireMaster::Success ? OneWireSlave::Success : OneWireSlave::CommunicationError); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1081 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1082 | |
IanBenzMaxim | 74:23be10c32fa3 | 1083 | OneWireSlave::CmdResult DS28E15_22_25::writeSegment(unsigned int page, unsigned int block, const Segment & data, bool continuing) |
IanBenzMaxim | 25:bdb1c5a53b58 | 1084 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1085 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 1086 | int cnt, offset; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1087 | |
IanBenzMaxim | 74:23be10c32fa3 | 1088 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 1089 | offset = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 1090 | |
IanBenzMaxim | 74:23be10c32fa3 | 1091 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 1092 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1093 | { |
IanBenzMaxim | 75:8b627804927c | 1094 | buf[cnt++] = WriteMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 1095 | buf[cnt++] = (block << 5) | page; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 1096 | |
IanBenzMaxim | 74:23be10c32fa3 | 1097 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 1098 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1099 | |
IanBenzMaxim | 74:23be10c32fa3 | 1100 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 1101 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1102 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1103 | |
IanBenzMaxim | 74:23be10c32fa3 | 1104 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 1105 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1106 | |
IanBenzMaxim | 74:23be10c32fa3 | 1107 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 1108 | for (size_t i = 0; i < data.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 1109 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1110 | buf[cnt++] = data[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 1111 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1112 | |
IanBenzMaxim | 74:23be10c32fa3 | 1113 | // Send data |
IanBenzMaxim | 74:23be10c32fa3 | 1114 | m_OW_master.OWWriteBlock(data, data.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1115 | |
IanBenzMaxim | 74:23be10c32fa3 | 1116 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 1117 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1118 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1119 | |
IanBenzMaxim | 74:23be10c32fa3 | 1120 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 1121 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1122 | { |
IanBenzMaxim | 75:8b627804927c | 1123 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1124 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1125 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 1126 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1127 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1128 | |
IanBenzMaxim | 74:23be10c32fa3 | 1129 | // check the second CRC16 |
IanBenzMaxim | 75:8b627804927c | 1130 | if (OneWireMaster::calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1131 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1132 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 1133 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1134 | |
IanBenzMaxim | 74:23be10c32fa3 | 1135 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 1136 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1137 | |
IanBenzMaxim | 74:23be10c32fa3 | 1138 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 1139 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 1140 | |
IanBenzMaxim | 74:23be10c32fa3 | 1141 | // disable strong pullup |
IanBenzMaxim | 75:8b627804927c | 1142 | m_OW_master.OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1143 | |
IanBenzMaxim | 74:23be10c32fa3 | 1144 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 1145 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1146 | |
IanBenzMaxim | 74:23be10c32fa3 | 1147 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1148 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1149 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 1150 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1151 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 1152 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1153 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1154 | |
IanBenzMaxim | 73:2cecc1372acc | 1155 | ISha256MacCoproc::CmdResult DS28E15_22_25::computeNextSecret(ISha256MacCoproc & MacCoproc, const Page & bindingPage, unsigned int bindingPageNum, const Scratchpad & partialSecret, const RomId & romId, const ManId & manId) |
IanBenzMaxim | 25:bdb1c5a53b58 | 1156 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1157 | ISha256MacCoproc::SlaveSecretData slaveSecretData; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1158 | |
IanBenzMaxim | 74:23be10c32fa3 | 1159 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 1160 | std::memcpy(slaveSecretData, romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1161 | |
IanBenzMaxim | 74:23be10c32fa3 | 1162 | slaveSecretData[11] = 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 1163 | slaveSecretData[10] = bindingPageNum; |
IanBenzMaxim | 74:23be10c32fa3 | 1164 | slaveSecretData[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 1165 | slaveSecretData[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1166 | |
IanBenzMaxim | 74:23be10c32fa3 | 1167 | return MacCoproc.computeSlaveSecret(ISha256MacCoproc::DevicePage(bindingPage), partialSecret, slaveSecretData); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1168 | } |