Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
Slaves/Authenticators/DS28E15_22_25/DS28E15_22_25.cpp@86:2ce08ca58b9e, 2016-06-15 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Wed Jun 15 15:00:06 2016 -0500
- Revision:
- 86:2ce08ca58b9e
- Parent:
- Authenticators/DS28E15_22_25/DS28E15_22_25.cpp@82:c11090a32471
- Child:
- 104:3f48daed532b
Updated to match new directory structure.
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 | 86:2ce08ca58b9e | 35 | #include "Utilities/crc.h" |
IanBenzMaxim | 73:2cecc1372acc | 36 | #include "wait_api.h" |
IanBenzMaxim | 73:2cecc1372acc | 37 | |
IanBenzMaxim | 76:84e6c4994e29 | 38 | using namespace OneWire; |
IanBenzMaxim | 78:0cbbac7f2016 | 39 | using namespace OneWire::crc; |
IanBenzMaxim | 25:bdb1c5a53b58 | 40 | |
IanBenzMaxim | 49:36954b62f503 | 41 | /// 1-Wire device commands. |
IanBenzMaxim | 49:36954b62f503 | 42 | enum Command |
IanBenzMaxim | 49:36954b62f503 | 43 | { |
IanBenzMaxim | 75:8b627804927c | 44 | WriteMemory = 0x55, |
IanBenzMaxim | 75:8b627804927c | 45 | ReadMemory = 0xF0, |
IanBenzMaxim | 75:8b627804927c | 46 | LoadAndLockSecret = 0x33, |
IanBenzMaxim | 75:8b627804927c | 47 | ComputeAndLockSecret = 0x3C, |
IanBenzMaxim | 75:8b627804927c | 48 | ReadWriteScratchpad = 0x0F, |
IanBenzMaxim | 75:8b627804927c | 49 | ComputePageMac = 0xA5, |
IanBenzMaxim | 75:8b627804927c | 50 | ReadStatus = 0xAA, |
IanBenzMaxim | 75:8b627804927c | 51 | WriteBlockProtection = 0xC3, |
IanBenzMaxim | 75:8b627804927c | 52 | AuthWriteMemory = 0x5A, |
IanBenzMaxim | 75:8b627804927c | 53 | AuthWriteBlockProtection = 0xCC, |
IanBenzMaxim | 49:36954b62f503 | 54 | }; |
IanBenzMaxim | 25:bdb1c5a53b58 | 55 | |
IanBenzMaxim | 62:43039aeca2ab | 56 | DS28E15_22_25::Segment DS28E15_22_25::Page::toSegment(unsigned int segmentNum) const |
IanBenzMaxim | 62:43039aeca2ab | 57 | { |
IanBenzMaxim | 74:23be10c32fa3 | 58 | if (segmentNum > (segmentsPerPage - 1)) |
IanBenzMaxim | 74:23be10c32fa3 | 59 | { |
IanBenzMaxim | 74:23be10c32fa3 | 60 | segmentNum = (segmentsPerPage - 1); |
IanBenzMaxim | 74:23be10c32fa3 | 61 | } |
IanBenzMaxim | 74:23be10c32fa3 | 62 | return Segment(*reinterpret_cast<const Segment::Buffer *>(&m_data[segmentNum * sizeof(Segment::Buffer)])); |
IanBenzMaxim | 62:43039aeca2ab | 63 | } |
IanBenzMaxim | 62:43039aeca2ab | 64 | |
IanBenzMaxim | 62:43039aeca2ab | 65 | void DS28E15_22_25::Page::fromSegment(unsigned int segmentNum, const Segment & segment) |
IanBenzMaxim | 62:43039aeca2ab | 66 | { |
IanBenzMaxim | 74:23be10c32fa3 | 67 | if (segmentNum > (segmentsPerPage - 1)) |
IanBenzMaxim | 74:23be10c32fa3 | 68 | { |
IanBenzMaxim | 74:23be10c32fa3 | 69 | segmentNum = (segmentsPerPage - 1); |
IanBenzMaxim | 74:23be10c32fa3 | 70 | } |
IanBenzMaxim | 74:23be10c32fa3 | 71 | std::memcpy(&m_data[segmentNum * sizeof(Segment::Buffer)], &static_cast<const Segment::Buffer &>(segment), Segment::length); |
IanBenzMaxim | 62:43039aeca2ab | 72 | } |
IanBenzMaxim | 62:43039aeca2ab | 73 | |
IanBenzMaxim | 73:2cecc1372acc | 74 | DS28E15_22_25::BlockProtection::BlockProtection(bool readProtection, bool writeProtection, bool eepromEmulation, bool authProtection, uint8_t blockNum) |
IanBenzMaxim | 34:11fffbe98ef9 | 75 | { |
IanBenzMaxim | 74:23be10c32fa3 | 76 | setReadProtection(readProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 77 | setWriteProtection(writeProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 78 | setEepromEmulation(eepromEmulation); |
IanBenzMaxim | 74:23be10c32fa3 | 79 | setAuthProtection(authProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 80 | setBlockNum(blockNum); |
IanBenzMaxim | 34:11fffbe98ef9 | 81 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 82 | |
IanBenzMaxim | 73:2cecc1372acc | 83 | void DS28E15_22_25::BlockProtection::setBlockNum(uint8_t blockNum) |
IanBenzMaxim | 34:11fffbe98ef9 | 84 | { |
IanBenzMaxim | 74:23be10c32fa3 | 85 | m_status &= ~blockNumMask; |
IanBenzMaxim | 74:23be10c32fa3 | 86 | m_status |= (blockNum & blockNumMask); |
IanBenzMaxim | 34:11fffbe98ef9 | 87 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 88 | |
IanBenzMaxim | 34:11fffbe98ef9 | 89 | bool DS28E15_22_25::BlockProtection::noProtection() const |
IanBenzMaxim | 34:11fffbe98ef9 | 90 | { |
IanBenzMaxim | 74:23be10c32fa3 | 91 | return !readProtection() && !writeProtection() && !eepromEmulation() && !authProtection(); |
IanBenzMaxim | 34:11fffbe98ef9 | 92 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 93 | |
IanBenzMaxim | 34:11fffbe98ef9 | 94 | void DS28E15_22_25::BlockProtection::setReadProtection(bool readProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 95 | { |
IanBenzMaxim | 74:23be10c32fa3 | 96 | if (readProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 97 | { |
IanBenzMaxim | 74:23be10c32fa3 | 98 | m_status |= readProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 99 | } |
IanBenzMaxim | 74:23be10c32fa3 | 100 | else |
IanBenzMaxim | 74:23be10c32fa3 | 101 | { |
IanBenzMaxim | 74:23be10c32fa3 | 102 | m_status &= ~readProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 103 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 104 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 105 | |
IanBenzMaxim | 34:11fffbe98ef9 | 106 | void DS28E15_22_25::BlockProtection::setWriteProtection(bool writeProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 107 | { |
IanBenzMaxim | 74:23be10c32fa3 | 108 | if (writeProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 109 | { |
IanBenzMaxim | 74:23be10c32fa3 | 110 | m_status |= writeProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 111 | } |
IanBenzMaxim | 74:23be10c32fa3 | 112 | else |
IanBenzMaxim | 74:23be10c32fa3 | 113 | { |
IanBenzMaxim | 74:23be10c32fa3 | 114 | m_status &= ~writeProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 115 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 116 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 117 | |
IanBenzMaxim | 34:11fffbe98ef9 | 118 | void DS28E15_22_25::BlockProtection::setEepromEmulation(bool eepromEmulation) |
IanBenzMaxim | 34:11fffbe98ef9 | 119 | { |
IanBenzMaxim | 74:23be10c32fa3 | 120 | if (eepromEmulation) |
IanBenzMaxim | 74:23be10c32fa3 | 121 | { |
IanBenzMaxim | 74:23be10c32fa3 | 122 | m_status |= eepromEmulationMask; |
IanBenzMaxim | 74:23be10c32fa3 | 123 | } |
IanBenzMaxim | 74:23be10c32fa3 | 124 | else |
IanBenzMaxim | 74:23be10c32fa3 | 125 | { |
IanBenzMaxim | 74:23be10c32fa3 | 126 | m_status &= ~eepromEmulationMask; |
IanBenzMaxim | 74:23be10c32fa3 | 127 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 128 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 129 | |
IanBenzMaxim | 34:11fffbe98ef9 | 130 | void DS28E15_22_25::BlockProtection::setAuthProtection(bool authProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 131 | { |
IanBenzMaxim | 74:23be10c32fa3 | 132 | if (authProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 133 | { |
IanBenzMaxim | 74:23be10c32fa3 | 134 | m_status |= authProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 135 | } |
IanBenzMaxim | 74:23be10c32fa3 | 136 | else |
IanBenzMaxim | 74:23be10c32fa3 | 137 | { |
IanBenzMaxim | 74:23be10c32fa3 | 138 | m_status &= ~authProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 139 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 140 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 141 | |
IanBenzMaxim | 77:529edb329ee0 | 142 | DS28E15_22_25::DS28E15_22_25(RandomAccessRomIterator & selector, bool lowVoltage) |
IanBenzMaxim | 82:c11090a32471 | 143 | : OneWireSlave(selector), m_lowVoltage(lowVoltage) |
IanBenzMaxim | 25:bdb1c5a53b58 | 144 | { |
IanBenzMaxim | 82:c11090a32471 | 145 | std::memset(m_manId, 0x00, m_manId.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 146 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 147 | |
IanBenzMaxim | 34:11fffbe98ef9 | 148 | DS28E15_22_25::MemoryPages DS28E15_22_25::memoryPages() |
IanBenzMaxim | 25:bdb1c5a53b58 | 149 | { |
IanBenzMaxim | 74:23be10c32fa3 | 150 | MemoryPages pages; |
IanBenzMaxim | 74:23be10c32fa3 | 151 | |
IanBenzMaxim | 82:c11090a32471 | 152 | switch (romId().familyCode()) |
IanBenzMaxim | 74:23be10c32fa3 | 153 | { |
IanBenzMaxim | 75:8b627804927c | 154 | case DS28E25_Family: |
IanBenzMaxim | 75:8b627804927c | 155 | pages = DS28E25_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 156 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 157 | |
IanBenzMaxim | 75:8b627804927c | 158 | case DS28E22_Family: |
IanBenzMaxim | 75:8b627804927c | 159 | pages = DS28E22_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 160 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 161 | |
IanBenzMaxim | 75:8b627804927c | 162 | case DS28E15_Family: |
IanBenzMaxim | 75:8b627804927c | 163 | pages = DS28E15_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 164 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 165 | |
IanBenzMaxim | 74:23be10c32fa3 | 166 | default: |
IanBenzMaxim | 75:8b627804927c | 167 | pages = Unknown_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 168 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 169 | } |
IanBenzMaxim | 74:23be10c32fa3 | 170 | |
IanBenzMaxim | 74:23be10c32fa3 | 171 | return pages; |
IanBenzMaxim | 25:bdb1c5a53b58 | 172 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 173 | |
IanBenzMaxim | 34:11fffbe98ef9 | 174 | DS28E15_22_25::ProtectionBlocks DS28E15_22_25::protectionBlocks() |
IanBenzMaxim | 25:bdb1c5a53b58 | 175 | { |
IanBenzMaxim | 74:23be10c32fa3 | 176 | ProtectionBlocks blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 177 | |
IanBenzMaxim | 82:c11090a32471 | 178 | switch (romId().familyCode()) |
IanBenzMaxim | 74:23be10c32fa3 | 179 | { |
IanBenzMaxim | 75:8b627804927c | 180 | case DS28E25_Family: |
IanBenzMaxim | 75:8b627804927c | 181 | blocks = DS28E25_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 182 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 183 | |
IanBenzMaxim | 75:8b627804927c | 184 | case DS28E22_Family: |
IanBenzMaxim | 75:8b627804927c | 185 | blocks = DS28E22_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 186 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 187 | |
IanBenzMaxim | 75:8b627804927c | 188 | case DS28E15_Family: |
IanBenzMaxim | 75:8b627804927c | 189 | blocks = DS28E15_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 190 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 191 | |
IanBenzMaxim | 74:23be10c32fa3 | 192 | default: |
IanBenzMaxim | 75:8b627804927c | 193 | blocks = Unknown_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 194 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 195 | } |
IanBenzMaxim | 74:23be10c32fa3 | 196 | |
IanBenzMaxim | 74:23be10c32fa3 | 197 | return blocks; |
IanBenzMaxim | 25:bdb1c5a53b58 | 198 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 199 | |
IanBenzMaxim | 74:23be10c32fa3 | 200 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthBlockProtection(const ISha256MacCoproc & MacCoproc, const BlockProtection & newProtection, const BlockProtection & oldProtection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 201 | { |
IanBenzMaxim | 74:23be10c32fa3 | 202 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 203 | int cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 204 | Mac mac; |
IanBenzMaxim | 77:529edb329ee0 | 205 | |
IanBenzMaxim | 77:529edb329ee0 | 206 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 207 | { |
IanBenzMaxim | 77:529edb329ee0 | 208 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 209 | } |
IanBenzMaxim | 74:23be10c32fa3 | 210 | |
IanBenzMaxim | 75:8b627804927c | 211 | buf[cnt++] = AuthWriteBlockProtection; |
IanBenzMaxim | 74:23be10c32fa3 | 212 | buf[cnt++] = newProtection.statusByte(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 213 | |
IanBenzMaxim | 74:23be10c32fa3 | 214 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 215 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 216 | |
IanBenzMaxim | 74:23be10c32fa3 | 217 | // read first CRC byte |
IanBenzMaxim | 77:529edb329ee0 | 218 | master().OWReadByte(buf[cnt++]); |
IanBenzMaxim | 74:23be10c32fa3 | 219 | |
IanBenzMaxim | 74:23be10c32fa3 | 220 | // read the last CRC and enable |
IanBenzMaxim | 77:529edb329ee0 | 221 | master().OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 222 | |
IanBenzMaxim | 74:23be10c32fa3 | 223 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 224 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 225 | |
IanBenzMaxim | 74:23be10c32fa3 | 226 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 227 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 228 | |
IanBenzMaxim | 74:23be10c32fa3 | 229 | // check CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 230 | if (calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 231 | { |
IanBenzMaxim | 77:529edb329ee0 | 232 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 233 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 234 | |
IanBenzMaxim | 74:23be10c32fa3 | 235 | ISha256MacCoproc::CmdResult result; |
IanBenzMaxim | 82:c11090a32471 | 236 | result = computeProtectionWriteMac(MacCoproc, newProtection, oldProtection, romId(), manId(), mac); |
IanBenzMaxim | 74:23be10c32fa3 | 237 | if (result != ISha256MacCoproc::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 238 | { |
IanBenzMaxim | 74:23be10c32fa3 | 239 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 240 | } |
IanBenzMaxim | 74:23be10c32fa3 | 241 | cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 242 | |
IanBenzMaxim | 74:23be10c32fa3 | 243 | // send the MAC |
IanBenzMaxim | 77:529edb329ee0 | 244 | master().OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 74:23be10c32fa3 | 245 | |
IanBenzMaxim | 74:23be10c32fa3 | 246 | // Read CRC and CS byte |
IanBenzMaxim | 77:529edb329ee0 | 247 | master().OWReadBlock(&buf[cnt], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 248 | cnt += 3; |
IanBenzMaxim | 25:bdb1c5a53b58 | 249 | |
IanBenzMaxim | 74:23be10c32fa3 | 250 | // check CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 251 | if (calculateCrc16(buf, 0, (cnt - 1), calculateCrc16(mac, 0, mac.length)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 252 | { |
IanBenzMaxim | 77:529edb329ee0 | 253 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 254 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 255 | |
IanBenzMaxim | 74:23be10c32fa3 | 256 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 257 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 258 | { |
IanBenzMaxim | 74:23be10c32fa3 | 259 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 260 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 261 | |
IanBenzMaxim | 74:23be10c32fa3 | 262 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 263 | // DATASHEET_CORRECTION - last bit in release is a read-zero so don't check echo of write byte |
IanBenzMaxim | 77:529edb329ee0 | 264 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 265 | |
IanBenzMaxim | 74:23be10c32fa3 | 266 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 267 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 268 | |
IanBenzMaxim | 74:23be10c32fa3 | 269 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 270 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 271 | |
IanBenzMaxim | 74:23be10c32fa3 | 272 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 273 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 274 | |
IanBenzMaxim | 74:23be10c32fa3 | 275 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 276 | { |
IanBenzMaxim | 74:23be10c32fa3 | 277 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 278 | } |
IanBenzMaxim | 74:23be10c32fa3 | 279 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 280 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 281 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 282 | |
IanBenzMaxim | 74:23be10c32fa3 | 283 | OneWireSlave::CmdResult DS28E15_22_25::writeBlockProtection(const BlockProtection & protection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 284 | { |
IanBenzMaxim | 74:23be10c32fa3 | 285 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 286 | int cnt = 0; |
IanBenzMaxim | 77:529edb329ee0 | 287 | |
IanBenzMaxim | 77:529edb329ee0 | 288 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 289 | { |
IanBenzMaxim | 77:529edb329ee0 | 290 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 291 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 292 | |
IanBenzMaxim | 75:8b627804927c | 293 | buf[cnt++] = WriteBlockProtection; |
IanBenzMaxim | 25:bdb1c5a53b58 | 294 | |
IanBenzMaxim | 74:23be10c32fa3 | 295 | // compute parameter byte |
IanBenzMaxim | 74:23be10c32fa3 | 296 | buf[cnt++] = protection.statusByte(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 297 | |
IanBenzMaxim | 77:529edb329ee0 | 298 | master().OWWriteBlock(&buf[0], cnt); |
IanBenzMaxim | 25:bdb1c5a53b58 | 299 | |
IanBenzMaxim | 74:23be10c32fa3 | 300 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 301 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 302 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 303 | |
IanBenzMaxim | 74:23be10c32fa3 | 304 | // check CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 305 | if (calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 306 | { |
IanBenzMaxim | 77:529edb329ee0 | 307 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 308 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 309 | |
IanBenzMaxim | 74:23be10c32fa3 | 310 | // sent release |
IanBenzMaxim | 77:529edb329ee0 | 311 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 312 | |
IanBenzMaxim | 74:23be10c32fa3 | 313 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 314 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 315 | |
IanBenzMaxim | 74:23be10c32fa3 | 316 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 317 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 318 | |
IanBenzMaxim | 74:23be10c32fa3 | 319 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 320 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 321 | |
IanBenzMaxim | 74:23be10c32fa3 | 322 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 323 | { |
IanBenzMaxim | 74:23be10c32fa3 | 324 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 325 | } |
IanBenzMaxim | 74:23be10c32fa3 | 326 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 327 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 328 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 329 | |
IanBenzMaxim | 34:11fffbe98ef9 | 330 | OneWireSlave::CmdResult DS28E15_22_25::readBlockProtection(unsigned int blockNum, BlockProtection & protection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 331 | { |
IanBenzMaxim | 74:23be10c32fa3 | 332 | uint8_t buf; |
IanBenzMaxim | 77:529edb329ee0 | 333 | CmdResult result; |
IanBenzMaxim | 77:529edb329ee0 | 334 | |
IanBenzMaxim | 77:529edb329ee0 | 335 | result = readStatus(false, false, blockNum, &buf); |
IanBenzMaxim | 74:23be10c32fa3 | 336 | if (result == Success) |
IanBenzMaxim | 74:23be10c32fa3 | 337 | { |
IanBenzMaxim | 74:23be10c32fa3 | 338 | protection.setStatusByte(buf); |
IanBenzMaxim | 74:23be10c32fa3 | 339 | } |
IanBenzMaxim | 74:23be10c32fa3 | 340 | return result; |
IanBenzMaxim | 25:bdb1c5a53b58 | 341 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 342 | |
IanBenzMaxim | 74:23be10c32fa3 | 343 | template <DS28E15_22_25::ProtectionBlocks blocks> OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[blocks]) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 344 | { |
IanBenzMaxim | 74:23be10c32fa3 | 345 | uint8_t buf[blocks]; |
IanBenzMaxim | 74:23be10c32fa3 | 346 | CmdResult result = readStatus(false, true, 0, buf); |
IanBenzMaxim | 74:23be10c32fa3 | 347 | if (result == Success) |
IanBenzMaxim | 74:23be10c32fa3 | 348 | { |
IanBenzMaxim | 74:23be10c32fa3 | 349 | for (size_t i = 0; i < blocks; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 350 | { |
IanBenzMaxim | 74:23be10c32fa3 | 351 | protection[i].setStatusByte(buf[i]); |
IanBenzMaxim | 74:23be10c32fa3 | 352 | } |
IanBenzMaxim | 74:23be10c32fa3 | 353 | } |
IanBenzMaxim | 74:23be10c32fa3 | 354 | return result; |
IanBenzMaxim | 50:e967f9befbd0 | 355 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 356 | |
IanBenzMaxim | 75:8b627804927c | 357 | OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[DS28E15_Blocks]) const |
IanBenzMaxim | 50:e967f9befbd0 | 358 | { |
IanBenzMaxim | 75:8b627804927c | 359 | return readAllBlockProtection<DS28E15_Blocks>(protection); |
IanBenzMaxim | 50:e967f9befbd0 | 360 | } |
IanBenzMaxim | 50:e967f9befbd0 | 361 | |
IanBenzMaxim | 75:8b627804927c | 362 | OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[DS28E25_Blocks]) const |
IanBenzMaxim | 50:e967f9befbd0 | 363 | { |
IanBenzMaxim | 75:8b627804927c | 364 | return readAllBlockProtection<DS28E25_Blocks>(protection); |
IanBenzMaxim | 50:e967f9befbd0 | 365 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 366 | |
IanBenzMaxim | 51:a65f031e997b | 367 | OneWireSlave::CmdResult DS28E15_22_25::readPersonality(Personality & personality) const |
IanBenzMaxim | 50:e967f9befbd0 | 368 | { |
IanBenzMaxim | 74:23be10c32fa3 | 369 | return readStatus(true, false, 0, personality.bytes); |
IanBenzMaxim | 50:e967f9befbd0 | 370 | } |
IanBenzMaxim | 50:e967f9befbd0 | 371 | |
IanBenzMaxim | 73:2cecc1372acc | 372 | OneWireSlave::CmdResult DS28E15_22_25::readStatus(bool personality, bool allpages, unsigned int blockNum, uint8_t * rdbuf) const |
IanBenzMaxim | 50:e967f9befbd0 | 373 | { |
IanBenzMaxim | 74:23be10c32fa3 | 374 | const size_t crcLen = 4, ds28e22_25_pagesPerBlock = 2; |
IanBenzMaxim | 74:23be10c32fa3 | 375 | |
IanBenzMaxim | 74:23be10c32fa3 | 376 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 377 | size_t cnt = 0, offset = 0; |
IanBenzMaxim | 77:529edb329ee0 | 378 | |
IanBenzMaxim | 77:529edb329ee0 | 379 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 380 | { |
IanBenzMaxim | 77:529edb329ee0 | 381 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 382 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 383 | |
IanBenzMaxim | 75:8b627804927c | 384 | buf[cnt++] = ReadStatus; |
IanBenzMaxim | 74:23be10c32fa3 | 385 | if (personality) |
IanBenzMaxim | 74:23be10c32fa3 | 386 | { |
IanBenzMaxim | 74:23be10c32fa3 | 387 | buf[cnt++] = 0xE0; |
IanBenzMaxim | 74:23be10c32fa3 | 388 | } |
IanBenzMaxim | 74:23be10c32fa3 | 389 | else if (allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 390 | { |
IanBenzMaxim | 74:23be10c32fa3 | 391 | buf[cnt++] = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 392 | } |
IanBenzMaxim | 74:23be10c32fa3 | 393 | else |
IanBenzMaxim | 74:23be10c32fa3 | 394 | { |
IanBenzMaxim | 74:23be10c32fa3 | 395 | // Convert to page number for DS28E22 and DS28E25 |
IanBenzMaxim | 74:23be10c32fa3 | 396 | buf[cnt] = blockNum; |
IanBenzMaxim | 82:c11090a32471 | 397 | if ((romId().familyCode() == DS28E25_Family) || (romId().familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 398 | { |
IanBenzMaxim | 74:23be10c32fa3 | 399 | buf[cnt] *= ds28e22_25_pagesPerBlock; |
IanBenzMaxim | 74:23be10c32fa3 | 400 | } |
IanBenzMaxim | 74:23be10c32fa3 | 401 | cnt++; |
IanBenzMaxim | 74:23be10c32fa3 | 402 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 403 | |
IanBenzMaxim | 74:23be10c32fa3 | 404 | // send the command |
IanBenzMaxim | 77:529edb329ee0 | 405 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 50:e967f9befbd0 | 406 | |
IanBenzMaxim | 74:23be10c32fa3 | 407 | offset = cnt + 2; |
IanBenzMaxim | 50:e967f9befbd0 | 408 | |
IanBenzMaxim | 74:23be10c32fa3 | 409 | // Set data length |
IanBenzMaxim | 74:23be10c32fa3 | 410 | size_t rdnum; |
IanBenzMaxim | 74:23be10c32fa3 | 411 | if (personality) |
IanBenzMaxim | 74:23be10c32fa3 | 412 | { |
IanBenzMaxim | 74:23be10c32fa3 | 413 | rdnum = 4; |
IanBenzMaxim | 74:23be10c32fa3 | 414 | } |
IanBenzMaxim | 74:23be10c32fa3 | 415 | else if (!allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 416 | { |
IanBenzMaxim | 74:23be10c32fa3 | 417 | rdnum = 1; |
IanBenzMaxim | 74:23be10c32fa3 | 418 | } |
IanBenzMaxim | 82:c11090a32471 | 419 | else if ((romId().familyCode() == DS28E22_Family) || (romId().familyCode() == DS28E25_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 420 | { |
IanBenzMaxim | 75:8b627804927c | 421 | rdnum = DS28E25_Pages; // Need to read extra data on DS28E22 to get CRC16. |
IanBenzMaxim | 74:23be10c32fa3 | 422 | } |
IanBenzMaxim | 74:23be10c32fa3 | 423 | else // DS28E15 |
IanBenzMaxim | 74:23be10c32fa3 | 424 | { |
IanBenzMaxim | 75:8b627804927c | 425 | rdnum = DS28E15_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 426 | } |
IanBenzMaxim | 74:23be10c32fa3 | 427 | rdnum += crcLen; // Add in CRC length |
IanBenzMaxim | 50:e967f9befbd0 | 428 | |
IanBenzMaxim | 74:23be10c32fa3 | 429 | // Read the bytes |
IanBenzMaxim | 77:529edb329ee0 | 430 | master().OWReadBlock(&buf[cnt], rdnum); |
IanBenzMaxim | 74:23be10c32fa3 | 431 | cnt += rdnum; |
IanBenzMaxim | 50:e967f9befbd0 | 432 | |
IanBenzMaxim | 74:23be10c32fa3 | 433 | // check the first CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 434 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 435 | { |
IanBenzMaxim | 77:529edb329ee0 | 436 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 437 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 438 | |
IanBenzMaxim | 74:23be10c32fa3 | 439 | if (personality || allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 440 | { |
IanBenzMaxim | 74:23be10c32fa3 | 441 | // check the second CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 442 | if (calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 443 | { |
IanBenzMaxim | 77:529edb329ee0 | 444 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 445 | } |
IanBenzMaxim | 74:23be10c32fa3 | 446 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 447 | |
IanBenzMaxim | 74:23be10c32fa3 | 448 | // copy the data to the read buffer |
IanBenzMaxim | 74:23be10c32fa3 | 449 | rdnum -= crcLen; |
IanBenzMaxim | 82:c11090a32471 | 450 | if (allpages && ((romId().familyCode() == DS28E25_Family) || (romId().familyCode() == DS28E22_Family))) |
IanBenzMaxim | 50:e967f9befbd0 | 451 | { |
IanBenzMaxim | 82:c11090a32471 | 452 | if (romId().familyCode() == DS28E22_Family) |
IanBenzMaxim | 74:23be10c32fa3 | 453 | { |
IanBenzMaxim | 75:8b627804927c | 454 | rdnum -= (DS28E25_Pages - DS28E22_Pages); |
IanBenzMaxim | 74:23be10c32fa3 | 455 | } |
IanBenzMaxim | 74:23be10c32fa3 | 456 | |
IanBenzMaxim | 74:23be10c32fa3 | 457 | for (size_t i = 0; i < (rdnum / ds28e22_25_pagesPerBlock); i++) |
IanBenzMaxim | 74:23be10c32fa3 | 458 | { |
IanBenzMaxim | 74:23be10c32fa3 | 459 | rdbuf[i] = (buf[offset + (i * ds28e22_25_pagesPerBlock)] & 0xF0); // Upper nibble |
IanBenzMaxim | 74:23be10c32fa3 | 460 | rdbuf[i] |= ((buf[offset + (i * ds28e22_25_pagesPerBlock)] & 0x0F) / ds28e22_25_pagesPerBlock); // Lower nibble |
IanBenzMaxim | 74:23be10c32fa3 | 461 | } |
IanBenzMaxim | 50:e967f9befbd0 | 462 | } |
IanBenzMaxim | 74:23be10c32fa3 | 463 | else |
IanBenzMaxim | 74:23be10c32fa3 | 464 | { |
IanBenzMaxim | 74:23be10c32fa3 | 465 | std::memcpy(rdbuf, &buf[offset], rdnum); |
IanBenzMaxim | 74:23be10c32fa3 | 466 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 467 | |
IanBenzMaxim | 74:23be10c32fa3 | 468 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 469 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 470 | |
IanBenzMaxim | 73:2cecc1372acc | 471 | 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 | 472 | { |
IanBenzMaxim | 74:23be10c32fa3 | 473 | ISha256MacCoproc::AuthMacData authMacData; |
IanBenzMaxim | 49:36954b62f503 | 474 | |
IanBenzMaxim | 74:23be10c32fa3 | 475 | // insert ROM number or FF |
IanBenzMaxim | 74:23be10c32fa3 | 476 | std::memcpy(authMacData, romId, RomId::byteLen); |
IanBenzMaxim | 49:36954b62f503 | 477 | |
IanBenzMaxim | 74:23be10c32fa3 | 478 | authMacData[10] = pageNum; |
IanBenzMaxim | 25:bdb1c5a53b58 | 479 | |
IanBenzMaxim | 74:23be10c32fa3 | 480 | authMacData[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 481 | authMacData[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 482 | |
IanBenzMaxim | 74:23be10c32fa3 | 483 | authMacData[11] = 0x00; |
IanBenzMaxim | 25:bdb1c5a53b58 | 484 | |
IanBenzMaxim | 74:23be10c32fa3 | 485 | return MacCoproc.computeAuthMac(ISha256MacCoproc::DevicePage(pageData), challenge, authMacData, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 486 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 487 | |
IanBenzMaxim | 73:2cecc1372acc | 488 | 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 | 489 | { |
IanBenzMaxim | 74:23be10c32fa3 | 490 | RomId romId; |
IanBenzMaxim | 74:23be10c32fa3 | 491 | std::memset(romId, 0xFF, RomId::byteLen); |
IanBenzMaxim | 74:23be10c32fa3 | 492 | return computeAuthMac(MacCoproc, pageData, pageNum, challenge, romId, manId, mac); |
IanBenzMaxim | 49:36954b62f503 | 493 | } |
IanBenzMaxim | 49:36954b62f503 | 494 | |
IanBenzMaxim | 74:23be10c32fa3 | 495 | OneWireSlave::CmdResult DS28E15_22_25::computeReadPageMac(unsigned int page_num, bool anon, Mac & mac) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 496 | { |
IanBenzMaxim | 74:23be10c32fa3 | 497 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 498 | int cnt = 0; |
IanBenzMaxim | 77:529edb329ee0 | 499 | |
IanBenzMaxim | 77:529edb329ee0 | 500 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 501 | { |
IanBenzMaxim | 77:529edb329ee0 | 502 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 503 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 504 | |
IanBenzMaxim | 75:8b627804927c | 505 | buf[cnt++] = ComputePageMac; |
IanBenzMaxim | 74:23be10c32fa3 | 506 | buf[cnt++] = ((anon) ? 0xE0 : 0x00) | page_num; |
IanBenzMaxim | 74:23be10c32fa3 | 507 | |
IanBenzMaxim | 74:23be10c32fa3 | 508 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 509 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 510 | |
IanBenzMaxim | 74:23be10c32fa3 | 511 | // read first CRC byte |
IanBenzMaxim | 77:529edb329ee0 | 512 | master().OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 513 | |
IanBenzMaxim | 74:23be10c32fa3 | 514 | // read the last CRC and enable |
IanBenzMaxim | 77:529edb329ee0 | 515 | master().OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 516 | |
IanBenzMaxim | 74:23be10c32fa3 | 517 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 518 | wait_ms(shaComputationDelayMs * 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 519 | |
IanBenzMaxim | 74:23be10c32fa3 | 520 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 521 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 522 | |
IanBenzMaxim | 74:23be10c32fa3 | 523 | // check CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 524 | if (calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 525 | { |
IanBenzMaxim | 77:529edb329ee0 | 526 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 527 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 528 | |
IanBenzMaxim | 74:23be10c32fa3 | 529 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 530 | master().OWReadByte(cs); |
IanBenzMaxim | 74:23be10c32fa3 | 531 | if (cs != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 532 | { |
IanBenzMaxim | 74:23be10c32fa3 | 533 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 534 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 535 | |
IanBenzMaxim | 74:23be10c32fa3 | 536 | // read the MAC and CRC |
IanBenzMaxim | 77:529edb329ee0 | 537 | master().OWReadBlock(&buf[0], (Mac::length + 2)); |
IanBenzMaxim | 25:bdb1c5a53b58 | 538 | |
IanBenzMaxim | 74:23be10c32fa3 | 539 | // check CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 540 | if (calculateCrc16(buf, 0, (Mac::length + 2)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 541 | { |
IanBenzMaxim | 77:529edb329ee0 | 542 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 543 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 544 | |
IanBenzMaxim | 74:23be10c32fa3 | 545 | // copy MAC to return buffer |
IanBenzMaxim | 74:23be10c32fa3 | 546 | std::memcpy(mac, buf, Mac::length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 547 | |
IanBenzMaxim | 74:23be10c32fa3 | 548 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 549 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 550 | |
IanBenzMaxim | 74:23be10c32fa3 | 551 | OneWireSlave::CmdResult DS28E15_22_25::computeSecret(unsigned int page_num, bool lock) |
IanBenzMaxim | 25:bdb1c5a53b58 | 552 | { |
IanBenzMaxim | 74:23be10c32fa3 | 553 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 554 | int cnt = 0; |
IanBenzMaxim | 77:529edb329ee0 | 555 | |
IanBenzMaxim | 77:529edb329ee0 | 556 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 557 | { |
IanBenzMaxim | 77:529edb329ee0 | 558 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 559 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 560 | |
IanBenzMaxim | 75:8b627804927c | 561 | buf[cnt++] = ComputeAndLockSecret; |
IanBenzMaxim | 74:23be10c32fa3 | 562 | buf[cnt++] = (lock) ? (0xE0 | page_num) : page_num; // lock flag |
IanBenzMaxim | 25:bdb1c5a53b58 | 563 | |
IanBenzMaxim | 74:23be10c32fa3 | 564 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 565 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 566 | |
IanBenzMaxim | 74:23be10c32fa3 | 567 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 568 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 569 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 570 | |
IanBenzMaxim | 74:23be10c32fa3 | 571 | // check CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 572 | if (calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 573 | { |
IanBenzMaxim | 77:529edb329ee0 | 574 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 575 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 576 | |
IanBenzMaxim | 74:23be10c32fa3 | 577 | // send release and strong pull-up |
IanBenzMaxim | 77:529edb329ee0 | 578 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 579 | |
IanBenzMaxim | 74:23be10c32fa3 | 580 | // now wait for the MAC computations and secret programming. |
IanBenzMaxim | 74:23be10c32fa3 | 581 | wait_ms(shaComputationDelayMs * 2 + secretEepromWriteDelayMs()); |
IanBenzMaxim | 25:bdb1c5a53b58 | 582 | |
IanBenzMaxim | 74:23be10c32fa3 | 583 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 584 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 585 | |
IanBenzMaxim | 74:23be10c32fa3 | 586 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 587 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 588 | |
IanBenzMaxim | 74:23be10c32fa3 | 589 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 590 | { |
IanBenzMaxim | 74:23be10c32fa3 | 591 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 592 | } |
IanBenzMaxim | 74:23be10c32fa3 | 593 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 594 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 595 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 596 | |
IanBenzMaxim | 34:11fffbe98ef9 | 597 | OneWireSlave::CmdResult DS28E15_22_25::writeScratchpad(const Scratchpad & data) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 598 | { |
IanBenzMaxim | 74:23be10c32fa3 | 599 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 600 | int cnt = 0, offset; |
IanBenzMaxim | 77:529edb329ee0 | 601 | |
IanBenzMaxim | 77:529edb329ee0 | 602 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 603 | { |
IanBenzMaxim | 77:529edb329ee0 | 604 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 605 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 606 | |
IanBenzMaxim | 75:8b627804927c | 607 | buf[cnt++] = ReadWriteScratchpad; |
IanBenzMaxim | 82:c11090a32471 | 608 | if ((romId().familyCode() == DS28E25_Family) || (romId().familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 609 | { |
IanBenzMaxim | 74:23be10c32fa3 | 610 | buf[cnt++] = 0x20; |
IanBenzMaxim | 74:23be10c32fa3 | 611 | } |
IanBenzMaxim | 74:23be10c32fa3 | 612 | else |
IanBenzMaxim | 74:23be10c32fa3 | 613 | { |
IanBenzMaxim | 74:23be10c32fa3 | 614 | buf[cnt++] = 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 615 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 616 | |
IanBenzMaxim | 74:23be10c32fa3 | 617 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 618 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 619 | |
IanBenzMaxim | 74:23be10c32fa3 | 620 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 621 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 622 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 623 | |
IanBenzMaxim | 74:23be10c32fa3 | 624 | offset = cnt; |
IanBenzMaxim | 25:bdb1c5a53b58 | 625 | |
IanBenzMaxim | 74:23be10c32fa3 | 626 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 627 | std::memcpy(&buf[cnt], data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 628 | cnt += data.length; |
IanBenzMaxim | 25:bdb1c5a53b58 | 629 | |
IanBenzMaxim | 74:23be10c32fa3 | 630 | // Send the data |
IanBenzMaxim | 77:529edb329ee0 | 631 | master().OWWriteBlock(data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 632 | |
IanBenzMaxim | 74:23be10c32fa3 | 633 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 634 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 635 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 636 | |
IanBenzMaxim | 74:23be10c32fa3 | 637 | // check first CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 638 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 639 | { |
IanBenzMaxim | 77:529edb329ee0 | 640 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 641 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 642 | |
IanBenzMaxim | 74:23be10c32fa3 | 643 | // check the second CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 644 | if (calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 645 | { |
IanBenzMaxim | 77:529edb329ee0 | 646 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 647 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 648 | |
IanBenzMaxim | 74:23be10c32fa3 | 649 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 650 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 651 | |
IanBenzMaxim | 49:36954b62f503 | 652 | OneWireSlave::CmdResult DS28E15_22_25::readScratchpad(Scratchpad & data) const |
IanBenzMaxim | 49:36954b62f503 | 653 | { |
IanBenzMaxim | 74:23be10c32fa3 | 654 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 655 | int cnt = 0, offset; |
IanBenzMaxim | 77:529edb329ee0 | 656 | |
IanBenzMaxim | 77:529edb329ee0 | 657 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 658 | { |
IanBenzMaxim | 77:529edb329ee0 | 659 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 660 | } |
IanBenzMaxim | 49:36954b62f503 | 661 | |
IanBenzMaxim | 75:8b627804927c | 662 | buf[cnt++] = ReadWriteScratchpad; |
IanBenzMaxim | 82:c11090a32471 | 663 | if ((romId().familyCode() == DS28E25_Family) || (romId().familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 664 | { |
IanBenzMaxim | 74:23be10c32fa3 | 665 | buf[cnt++] = 0x2F; |
IanBenzMaxim | 74:23be10c32fa3 | 666 | } |
IanBenzMaxim | 74:23be10c32fa3 | 667 | else |
IanBenzMaxim | 74:23be10c32fa3 | 668 | { |
IanBenzMaxim | 74:23be10c32fa3 | 669 | buf[cnt++] = 0x0F; |
IanBenzMaxim | 74:23be10c32fa3 | 670 | } |
IanBenzMaxim | 49:36954b62f503 | 671 | |
IanBenzMaxim | 74:23be10c32fa3 | 672 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 673 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 49:36954b62f503 | 674 | |
IanBenzMaxim | 74:23be10c32fa3 | 675 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 676 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 677 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 678 | |
IanBenzMaxim | 74:23be10c32fa3 | 679 | offset = cnt; |
IanBenzMaxim | 49:36954b62f503 | 680 | |
IanBenzMaxim | 74:23be10c32fa3 | 681 | // Receive the data |
IanBenzMaxim | 77:529edb329ee0 | 682 | master().OWReadBlock(&buf[cnt], data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 683 | cnt += data.length; |
IanBenzMaxim | 74:23be10c32fa3 | 684 | |
IanBenzMaxim | 74:23be10c32fa3 | 685 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 686 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 687 | cnt += 2; |
IanBenzMaxim | 49:36954b62f503 | 688 | |
IanBenzMaxim | 74:23be10c32fa3 | 689 | // check first CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 690 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 691 | { |
IanBenzMaxim | 77:529edb329ee0 | 692 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 693 | } |
IanBenzMaxim | 49:36954b62f503 | 694 | |
IanBenzMaxim | 74:23be10c32fa3 | 695 | // check the second CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 696 | if (calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 697 | { |
IanBenzMaxim | 77:529edb329ee0 | 698 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 699 | } |
IanBenzMaxim | 49:36954b62f503 | 700 | |
IanBenzMaxim | 74:23be10c32fa3 | 701 | // Copy to output |
IanBenzMaxim | 74:23be10c32fa3 | 702 | std::memcpy(data, &buf[offset], data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 703 | |
IanBenzMaxim | 74:23be10c32fa3 | 704 | return Success; |
IanBenzMaxim | 49:36954b62f503 | 705 | } |
IanBenzMaxim | 49:36954b62f503 | 706 | |
IanBenzMaxim | 34:11fffbe98ef9 | 707 | OneWireSlave::CmdResult DS28E15_22_25::loadSecret(bool lock) |
IanBenzMaxim | 25:bdb1c5a53b58 | 708 | { |
IanBenzMaxim | 74:23be10c32fa3 | 709 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 710 | int cnt = 0; |
IanBenzMaxim | 77:529edb329ee0 | 711 | |
IanBenzMaxim | 77:529edb329ee0 | 712 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 713 | { |
IanBenzMaxim | 77:529edb329ee0 | 714 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 715 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 716 | |
IanBenzMaxim | 75:8b627804927c | 717 | buf[cnt++] = LoadAndLockSecret; |
IanBenzMaxim | 74:23be10c32fa3 | 718 | buf[cnt++] = (lock) ? 0xE0 : 0x00; // lock flag |
IanBenzMaxim | 74:23be10c32fa3 | 719 | |
IanBenzMaxim | 74:23be10c32fa3 | 720 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 721 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 722 | |
IanBenzMaxim | 74:23be10c32fa3 | 723 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 724 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 725 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 726 | |
IanBenzMaxim | 74:23be10c32fa3 | 727 | // check CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 728 | if (calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 729 | { |
IanBenzMaxim | 77:529edb329ee0 | 730 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 731 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 732 | |
IanBenzMaxim | 74:23be10c32fa3 | 733 | // send release and strong pull-up |
IanBenzMaxim | 77:529edb329ee0 | 734 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 735 | |
IanBenzMaxim | 74:23be10c32fa3 | 736 | // now wait for the secret programming. |
IanBenzMaxim | 74:23be10c32fa3 | 737 | wait_ms(secretEepromWriteDelayMs()); |
IanBenzMaxim | 74:23be10c32fa3 | 738 | |
IanBenzMaxim | 74:23be10c32fa3 | 739 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 740 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 741 | |
IanBenzMaxim | 74:23be10c32fa3 | 742 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 743 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 744 | |
IanBenzMaxim | 74:23be10c32fa3 | 745 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 746 | { |
IanBenzMaxim | 74:23be10c32fa3 | 747 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 748 | } |
IanBenzMaxim | 74:23be10c32fa3 | 749 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 750 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 751 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 752 | |
IanBenzMaxim | 74:23be10c32fa3 | 753 | OneWireSlave::CmdResult DS28E15_22_25::readPage(unsigned int page, Page & rdbuf, bool continuing) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 754 | { |
IanBenzMaxim | 74:23be10c32fa3 | 755 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 756 | int cnt, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 757 | |
IanBenzMaxim | 74:23be10c32fa3 | 758 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 759 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 760 | |
IanBenzMaxim | 74:23be10c32fa3 | 761 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 762 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 763 | { |
IanBenzMaxim | 77:529edb329ee0 | 764 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 765 | { |
IanBenzMaxim | 77:529edb329ee0 | 766 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 767 | } |
IanBenzMaxim | 77:529edb329ee0 | 768 | |
IanBenzMaxim | 75:8b627804927c | 769 | buf[cnt++] = ReadMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 770 | buf[cnt++] = page; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 771 | |
IanBenzMaxim | 74:23be10c32fa3 | 772 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 773 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 774 | |
IanBenzMaxim | 74:23be10c32fa3 | 775 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 776 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 777 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 778 | |
IanBenzMaxim | 74:23be10c32fa3 | 779 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 780 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 781 | |
IanBenzMaxim | 74:23be10c32fa3 | 782 | // read data and CRC16 |
IanBenzMaxim | 77:529edb329ee0 | 783 | master().OWReadBlock(&buf[cnt], (rdbuf.length + 2)); |
IanBenzMaxim | 74:23be10c32fa3 | 784 | cnt += 34; |
IanBenzMaxim | 25:bdb1c5a53b58 | 785 | |
IanBenzMaxim | 74:23be10c32fa3 | 786 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 787 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 788 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 789 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 790 | { |
IanBenzMaxim | 77:529edb329ee0 | 791 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 792 | } |
IanBenzMaxim | 74:23be10c32fa3 | 793 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 794 | |
IanBenzMaxim | 74:23be10c32fa3 | 795 | // check the second CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 796 | if (calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 797 | { |
IanBenzMaxim | 77:529edb329ee0 | 798 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 799 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 800 | |
IanBenzMaxim | 74:23be10c32fa3 | 801 | // copy the data to the read buffer |
IanBenzMaxim | 74:23be10c32fa3 | 802 | std::memcpy(rdbuf, &buf[offset], rdbuf.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 803 | |
IanBenzMaxim | 74:23be10c32fa3 | 804 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 805 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 806 | |
IanBenzMaxim | 74:23be10c32fa3 | 807 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthSegmentMac(unsigned int pageNum, unsigned int segmentNum, const Segment & newData, const Mac & mac, bool continuing) |
IanBenzMaxim | 25:bdb1c5a53b58 | 808 | { |
IanBenzMaxim | 74:23be10c32fa3 | 809 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 810 | int cnt, i, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 811 | |
IanBenzMaxim | 74:23be10c32fa3 | 812 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 813 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 814 | |
IanBenzMaxim | 74:23be10c32fa3 | 815 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 816 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 817 | { |
IanBenzMaxim | 77:529edb329ee0 | 818 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 819 | { |
IanBenzMaxim | 77:529edb329ee0 | 820 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 821 | } |
IanBenzMaxim | 77:529edb329ee0 | 822 | |
IanBenzMaxim | 75:8b627804927c | 823 | buf[cnt++] = AuthWriteMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 824 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 825 | |
IanBenzMaxim | 74:23be10c32fa3 | 826 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 827 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 828 | |
IanBenzMaxim | 74:23be10c32fa3 | 829 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 830 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 831 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 832 | |
IanBenzMaxim | 74:23be10c32fa3 | 833 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 834 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 835 | |
IanBenzMaxim | 74:23be10c32fa3 | 836 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 837 | for (i = 0; i < newData.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 838 | { |
IanBenzMaxim | 74:23be10c32fa3 | 839 | buf[cnt++] = newData[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 840 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 841 | |
IanBenzMaxim | 74:23be10c32fa3 | 842 | // Send data |
IanBenzMaxim | 77:529edb329ee0 | 843 | master().OWWriteBlock(newData, newData.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 844 | |
IanBenzMaxim | 74:23be10c32fa3 | 845 | // read first CRC byte |
IanBenzMaxim | 77:529edb329ee0 | 846 | master().OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 847 | |
IanBenzMaxim | 74:23be10c32fa3 | 848 | // read the last CRC and enable power |
IanBenzMaxim | 77:529edb329ee0 | 849 | master().OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 850 | |
IanBenzMaxim | 74:23be10c32fa3 | 851 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 852 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 853 | |
IanBenzMaxim | 74:23be10c32fa3 | 854 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 855 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 856 | |
IanBenzMaxim | 74:23be10c32fa3 | 857 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 858 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 859 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 860 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 861 | { |
IanBenzMaxim | 77:529edb329ee0 | 862 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 863 | } |
IanBenzMaxim | 74:23be10c32fa3 | 864 | } |
IanBenzMaxim | 74:23be10c32fa3 | 865 | |
IanBenzMaxim | 74:23be10c32fa3 | 866 | // check the second CRC16 |
IanBenzMaxim | 79:7f22823a5a2d | 867 | uint16_t CRC16 = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 868 | |
IanBenzMaxim | 74:23be10c32fa3 | 869 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
IanBenzMaxim | 82:c11090a32471 | 870 | if ((romId().familyCode() == DS28E25_Family) || (romId().familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 871 | { |
IanBenzMaxim | 74:23be10c32fa3 | 872 | if (continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 873 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 874 | CRC16 = calculateCrc16(CRC16, 0xAA); |
IanBenzMaxim | 74:23be10c32fa3 | 875 | } |
IanBenzMaxim | 74:23be10c32fa3 | 876 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 877 | |
IanBenzMaxim | 78:0cbbac7f2016 | 878 | CRC16 = calculateCrc16(buf, offset, (cnt - offset), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 879 | |
IanBenzMaxim | 74:23be10c32fa3 | 880 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 881 | { |
IanBenzMaxim | 77:529edb329ee0 | 882 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 883 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 884 | |
IanBenzMaxim | 74:23be10c32fa3 | 885 | // transmit MAC as a block |
IanBenzMaxim | 77:529edb329ee0 | 886 | master().OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 887 | |
IanBenzMaxim | 74:23be10c32fa3 | 888 | // calculate CRC on MAC |
IanBenzMaxim | 78:0cbbac7f2016 | 889 | CRC16 = calculateCrc16(mac, 0, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 890 | |
IanBenzMaxim | 74:23be10c32fa3 | 891 | // append read of CRC16 and CS byte |
IanBenzMaxim | 77:529edb329ee0 | 892 | master().OWReadBlock(&buf[0], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 893 | cnt = 3; |
IanBenzMaxim | 74:23be10c32fa3 | 894 | |
IanBenzMaxim | 74:23be10c32fa3 | 895 | // ckeck CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 896 | CRC16 = calculateCrc16(buf, 0, (cnt - 1), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 897 | |
IanBenzMaxim | 74:23be10c32fa3 | 898 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 899 | { |
IanBenzMaxim | 77:529edb329ee0 | 900 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 901 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 902 | |
IanBenzMaxim | 74:23be10c32fa3 | 903 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 904 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 905 | { |
IanBenzMaxim | 74:23be10c32fa3 | 906 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 907 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 908 | |
IanBenzMaxim | 74:23be10c32fa3 | 909 | // send release and strong pull-up |
IanBenzMaxim | 77:529edb329ee0 | 910 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 911 | |
IanBenzMaxim | 74:23be10c32fa3 | 912 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 913 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 914 | |
IanBenzMaxim | 74:23be10c32fa3 | 915 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 916 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 917 | |
IanBenzMaxim | 74:23be10c32fa3 | 918 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 919 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 920 | |
IanBenzMaxim | 74:23be10c32fa3 | 921 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 922 | { |
IanBenzMaxim | 74:23be10c32fa3 | 923 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 924 | } |
IanBenzMaxim | 74:23be10c32fa3 | 925 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 926 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 927 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 928 | |
IanBenzMaxim | 74:23be10c32fa3 | 929 | 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 | 930 | { |
IanBenzMaxim | 74:23be10c32fa3 | 931 | ISha256MacCoproc::WriteMacData MT; |
IanBenzMaxim | 25:bdb1c5a53b58 | 932 | |
IanBenzMaxim | 74:23be10c32fa3 | 933 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 934 | std::memcpy(&MT[0], romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 935 | |
IanBenzMaxim | 74:23be10c32fa3 | 936 | MT[11] = segmentNum; |
IanBenzMaxim | 74:23be10c32fa3 | 937 | MT[10] = pageNum; |
IanBenzMaxim | 74:23be10c32fa3 | 938 | MT[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 939 | MT[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 940 | |
IanBenzMaxim | 74:23be10c32fa3 | 941 | // insert old data |
IanBenzMaxim | 74:23be10c32fa3 | 942 | std::memcpy(&MT[12], oldData, Segment::length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 943 | |
IanBenzMaxim | 74:23be10c32fa3 | 944 | // insert new data |
IanBenzMaxim | 74:23be10c32fa3 | 945 | std::memcpy(&MT[16], newData, Segment::length); |
IanBenzMaxim | 74:23be10c32fa3 | 946 | |
IanBenzMaxim | 74:23be10c32fa3 | 947 | return MacCoproc.computeWriteMac(MT, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 948 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 949 | |
IanBenzMaxim | 73:2cecc1372acc | 950 | 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 | 951 | { |
IanBenzMaxim | 74:23be10c32fa3 | 952 | ISha256MacCoproc::WriteMacData MT; |
IanBenzMaxim | 74:23be10c32fa3 | 953 | |
IanBenzMaxim | 74:23be10c32fa3 | 954 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 955 | std::memcpy(MT, romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 956 | |
IanBenzMaxim | 74:23be10c32fa3 | 957 | // instert block and page |
IanBenzMaxim | 74:23be10c32fa3 | 958 | MT[11] = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 959 | MT[10] = newProtection.blockNum(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 960 | |
IanBenzMaxim | 74:23be10c32fa3 | 961 | MT[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 962 | MT[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 963 | |
IanBenzMaxim | 74:23be10c32fa3 | 964 | // old data |
IanBenzMaxim | 74:23be10c32fa3 | 965 | MT[12] = oldProtection.authProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 966 | MT[13] = oldProtection.eepromEmulation() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 967 | MT[14] = oldProtection.writeProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 968 | MT[15] = oldProtection.readProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 969 | // new data |
IanBenzMaxim | 74:23be10c32fa3 | 970 | MT[16] = newProtection.authProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 971 | MT[17] = newProtection.eepromEmulation() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 972 | MT[18] = newProtection.writeProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 973 | MT[19] = newProtection.readProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 25:bdb1c5a53b58 | 974 | |
IanBenzMaxim | 74:23be10c32fa3 | 975 | // compute the mac |
IanBenzMaxim | 74:23be10c32fa3 | 976 | return MacCoproc.computeWriteMac(MT, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 977 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 978 | |
IanBenzMaxim | 73:2cecc1372acc | 979 | 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 | 980 | { |
IanBenzMaxim | 74:23be10c32fa3 | 981 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 982 | int cnt, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 983 | |
IanBenzMaxim | 74:23be10c32fa3 | 984 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 985 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 986 | |
IanBenzMaxim | 74:23be10c32fa3 | 987 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 988 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 989 | { |
IanBenzMaxim | 77:529edb329ee0 | 990 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 991 | { |
IanBenzMaxim | 77:529edb329ee0 | 992 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 993 | } |
IanBenzMaxim | 77:529edb329ee0 | 994 | |
IanBenzMaxim | 75:8b627804927c | 995 | buf[cnt++] = AuthWriteMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 996 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
IanBenzMaxim | 74:23be10c32fa3 | 997 | |
IanBenzMaxim | 74:23be10c32fa3 | 998 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 999 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1000 | |
IanBenzMaxim | 74:23be10c32fa3 | 1001 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 1002 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1003 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1004 | |
IanBenzMaxim | 74:23be10c32fa3 | 1005 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 1006 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1007 | |
IanBenzMaxim | 74:23be10c32fa3 | 1008 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 1009 | for (size_t i = 0; i < newData.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 1010 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1011 | buf[cnt++] = newData[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 1012 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1013 | |
IanBenzMaxim | 74:23be10c32fa3 | 1014 | // Send data |
IanBenzMaxim | 77:529edb329ee0 | 1015 | master().OWWriteBlock(newData, newData.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1016 | |
IanBenzMaxim | 74:23be10c32fa3 | 1017 | // read first CRC byte |
IanBenzMaxim | 77:529edb329ee0 | 1018 | master().OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1019 | |
IanBenzMaxim | 74:23be10c32fa3 | 1020 | // read the last CRC and enable power |
IanBenzMaxim | 77:529edb329ee0 | 1021 | master().OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1022 | |
IanBenzMaxim | 74:23be10c32fa3 | 1023 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 1024 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1025 | |
IanBenzMaxim | 74:23be10c32fa3 | 1026 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 1027 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1028 | |
IanBenzMaxim | 74:23be10c32fa3 | 1029 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 1030 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1031 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 1032 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1033 | { |
IanBenzMaxim | 77:529edb329ee0 | 1034 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 1035 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1036 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1037 | |
IanBenzMaxim | 74:23be10c32fa3 | 1038 | // check the second CRC16 |
IanBenzMaxim | 79:7f22823a5a2d | 1039 | uint16_t CRC16 = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1040 | |
IanBenzMaxim | 74:23be10c32fa3 | 1041 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
IanBenzMaxim | 82:c11090a32471 | 1042 | if ((romId().familyCode() == DS28E25_Family) || (romId().familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 1043 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1044 | if (continuing) |
IanBenzMaxim | 78:0cbbac7f2016 | 1045 | CRC16 = calculateCrc16(CRC16, 0xAA); |
IanBenzMaxim | 74:23be10c32fa3 | 1046 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1047 | |
IanBenzMaxim | 78:0cbbac7f2016 | 1048 | CRC16 = calculateCrc16(buf, offset, (cnt - offset), CRC16); |
IanBenzMaxim | 74:23be10c32fa3 | 1049 | |
IanBenzMaxim | 74:23be10c32fa3 | 1050 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1051 | { |
IanBenzMaxim | 77:529edb329ee0 | 1052 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 1053 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1054 | |
IanBenzMaxim | 25:bdb1c5a53b58 | 1055 | // compute the mac |
IanBenzMaxim | 74:23be10c32fa3 | 1056 | ISha256MacCoproc::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 1057 | Mac mac; |
IanBenzMaxim | 82:c11090a32471 | 1058 | result = computeSegmentWriteMac(MacCoproc, pageNum, segmentNum, newData, oldData, romId(), manId(), mac); |
IanBenzMaxim | 74:23be10c32fa3 | 1059 | if (result != ISha256MacCoproc::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 1060 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1061 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 1062 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1063 | |
IanBenzMaxim | 74:23be10c32fa3 | 1064 | // transmit MAC as a block |
IanBenzMaxim | 77:529edb329ee0 | 1065 | master().OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 74:23be10c32fa3 | 1066 | |
IanBenzMaxim | 74:23be10c32fa3 | 1067 | // calculate CRC on MAC |
IanBenzMaxim | 78:0cbbac7f2016 | 1068 | CRC16 = calculateCrc16(mac, 0, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1069 | |
IanBenzMaxim | 74:23be10c32fa3 | 1070 | // append read of CRC16 and CS byte |
IanBenzMaxim | 77:529edb329ee0 | 1071 | master().OWReadBlock(&buf[0], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 1072 | cnt = 3; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1073 | |
IanBenzMaxim | 74:23be10c32fa3 | 1074 | // ckeck CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 1075 | CRC16 = calculateCrc16(buf, 0, (cnt - 1), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1076 | |
IanBenzMaxim | 74:23be10c32fa3 | 1077 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1078 | { |
IanBenzMaxim | 77:529edb329ee0 | 1079 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 1080 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1081 | |
IanBenzMaxim | 74:23be10c32fa3 | 1082 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 1083 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1084 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1085 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 1086 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1087 | |
IanBenzMaxim | 74:23be10c32fa3 | 1088 | // send release and strong pull-up |
IanBenzMaxim | 77:529edb329ee0 | 1089 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1090 | |
IanBenzMaxim | 74:23be10c32fa3 | 1091 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 1092 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1093 | |
IanBenzMaxim | 74:23be10c32fa3 | 1094 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 1095 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1096 | |
IanBenzMaxim | 74:23be10c32fa3 | 1097 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 1098 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1099 | |
IanBenzMaxim | 74:23be10c32fa3 | 1100 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1101 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1102 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 1103 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1104 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 1105 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1106 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1107 | |
IanBenzMaxim | 50:e967f9befbd0 | 1108 | OneWireSlave::CmdResult DS28E15_22_25::readSegment(unsigned int page, unsigned int segment, Segment & data, bool continuing) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 1109 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1110 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 1111 | uint8_t buf[2]; |
IanBenzMaxim | 74:23be10c32fa3 | 1112 | |
IanBenzMaxim | 74:23be10c32fa3 | 1113 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1114 | { |
IanBenzMaxim | 77:529edb329ee0 | 1115 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 1116 | { |
IanBenzMaxim | 77:529edb329ee0 | 1117 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 1118 | } |
IanBenzMaxim | 77:529edb329ee0 | 1119 | |
IanBenzMaxim | 75:8b627804927c | 1120 | buf[0] = ReadMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 1121 | buf[1] = (segment << 5) | page; |
IanBenzMaxim | 74:23be10c32fa3 | 1122 | |
IanBenzMaxim | 74:23be10c32fa3 | 1123 | // Transmit command |
IanBenzMaxim | 77:529edb329ee0 | 1124 | master().OWWriteBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1125 | |
IanBenzMaxim | 74:23be10c32fa3 | 1126 | // Receive CRC |
IanBenzMaxim | 77:529edb329ee0 | 1127 | result = master().OWReadBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1128 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1129 | else if (segment == 0) |
IanBenzMaxim | 74:23be10c32fa3 | 1130 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1131 | // Receive CRC from previous read |
IanBenzMaxim | 77:529edb329ee0 | 1132 | result = master().OWReadBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1133 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1134 | |
IanBenzMaxim | 74:23be10c32fa3 | 1135 | // Receive data |
IanBenzMaxim | 74:23be10c32fa3 | 1136 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 1137 | { |
IanBenzMaxim | 77:529edb329ee0 | 1138 | result = master().OWReadBlock(data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 1139 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1140 | |
IanBenzMaxim | 74:23be10c32fa3 | 1141 | return (result == OneWireMaster::Success ? OneWireSlave::Success : OneWireSlave::CommunicationError); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1142 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1143 | |
IanBenzMaxim | 74:23be10c32fa3 | 1144 | OneWireSlave::CmdResult DS28E15_22_25::writeSegment(unsigned int page, unsigned int block, const Segment & data, bool continuing) |
IanBenzMaxim | 25:bdb1c5a53b58 | 1145 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1146 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 1147 | int cnt, offset; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1148 | |
IanBenzMaxim | 74:23be10c32fa3 | 1149 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 1150 | offset = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 1151 | |
IanBenzMaxim | 74:23be10c32fa3 | 1152 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 1153 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1154 | { |
IanBenzMaxim | 77:529edb329ee0 | 1155 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 1156 | { |
IanBenzMaxim | 77:529edb329ee0 | 1157 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 1158 | } |
IanBenzMaxim | 77:529edb329ee0 | 1159 | |
IanBenzMaxim | 75:8b627804927c | 1160 | buf[cnt++] = WriteMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 1161 | buf[cnt++] = (block << 5) | page; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 1162 | |
IanBenzMaxim | 74:23be10c32fa3 | 1163 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 1164 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1165 | |
IanBenzMaxim | 74:23be10c32fa3 | 1166 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 1167 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1168 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1169 | |
IanBenzMaxim | 74:23be10c32fa3 | 1170 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 1171 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1172 | |
IanBenzMaxim | 74:23be10c32fa3 | 1173 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 1174 | for (size_t i = 0; i < data.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 1175 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1176 | buf[cnt++] = data[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 1177 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1178 | |
IanBenzMaxim | 74:23be10c32fa3 | 1179 | // Send data |
IanBenzMaxim | 77:529edb329ee0 | 1180 | master().OWWriteBlock(data, data.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1181 | |
IanBenzMaxim | 74:23be10c32fa3 | 1182 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 1183 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1184 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1185 | |
IanBenzMaxim | 74:23be10c32fa3 | 1186 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 1187 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1188 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 1189 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1190 | { |
IanBenzMaxim | 77:529edb329ee0 | 1191 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 1192 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1193 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1194 | |
IanBenzMaxim | 74:23be10c32fa3 | 1195 | // check the second CRC16 |
IanBenzMaxim | 78:0cbbac7f2016 | 1196 | if (calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1197 | { |
IanBenzMaxim | 77:529edb329ee0 | 1198 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 1199 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1200 | |
IanBenzMaxim | 74:23be10c32fa3 | 1201 | // send release and strong pull-up |
IanBenzMaxim | 77:529edb329ee0 | 1202 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1203 | |
IanBenzMaxim | 74:23be10c32fa3 | 1204 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 1205 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 1206 | |
IanBenzMaxim | 74:23be10c32fa3 | 1207 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 1208 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1209 | |
IanBenzMaxim | 74:23be10c32fa3 | 1210 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 1211 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1212 | |
IanBenzMaxim | 74:23be10c32fa3 | 1213 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1214 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1215 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 1216 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1217 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 1218 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1219 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1220 | |
IanBenzMaxim | 73:2cecc1372acc | 1221 | 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 | 1222 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1223 | ISha256MacCoproc::SlaveSecretData slaveSecretData; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1224 | |
IanBenzMaxim | 74:23be10c32fa3 | 1225 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 1226 | std::memcpy(slaveSecretData, romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1227 | |
IanBenzMaxim | 74:23be10c32fa3 | 1228 | slaveSecretData[11] = 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 1229 | slaveSecretData[10] = bindingPageNum; |
IanBenzMaxim | 74:23be10c32fa3 | 1230 | slaveSecretData[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 1231 | slaveSecretData[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1232 | |
IanBenzMaxim | 74:23be10c32fa3 | 1233 | return MacCoproc.computeSlaveSecret(ISha256MacCoproc::DevicePage(bindingPage), partialSecret, slaveSecretData); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1234 | } |