1-Wire® library for mbed. Complete 1-Wire library that supports our silicon masters along with a bit-bang master on the MAX32600MBED platform with one common interface for mbed. Slave support has also been included and more slaves will be added as time permits.
Dependents: MAXREFDES131_Qt_Demo MAX32630FTHR_iButton_uSD_Logger MAX32630FTHR_DS18B20_uSD_Logger MAXREFDES130_131_Demo ... more
Superseded by MaximInterface.
Authenticators/DS28E15_22_25/DS28E15_22_25.cpp@77:529edb329ee0, 2016-05-16 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Mon May 16 10:36:30 2016 -0500
- Revision:
- 77:529edb329ee0
- Parent:
- 76:84e6c4994e29
- Child:
- 78:0cbbac7f2016
Added iterators for selecting 1-Wire devices on the bus and added support iterator support to OneWireSlave class.
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 | 76:84e6c4994e29 | 37 | using namespace OneWire; |
IanBenzMaxim | 25:bdb1c5a53b58 | 38 | |
IanBenzMaxim | 49:36954b62f503 | 39 | /// 1-Wire device commands. |
IanBenzMaxim | 49:36954b62f503 | 40 | enum Command |
IanBenzMaxim | 49:36954b62f503 | 41 | { |
IanBenzMaxim | 75:8b627804927c | 42 | WriteMemory = 0x55, |
IanBenzMaxim | 75:8b627804927c | 43 | ReadMemory = 0xF0, |
IanBenzMaxim | 75:8b627804927c | 44 | LoadAndLockSecret = 0x33, |
IanBenzMaxim | 75:8b627804927c | 45 | ComputeAndLockSecret = 0x3C, |
IanBenzMaxim | 75:8b627804927c | 46 | ReadWriteScratchpad = 0x0F, |
IanBenzMaxim | 75:8b627804927c | 47 | ComputePageMac = 0xA5, |
IanBenzMaxim | 75:8b627804927c | 48 | ReadStatus = 0xAA, |
IanBenzMaxim | 75:8b627804927c | 49 | WriteBlockProtection = 0xC3, |
IanBenzMaxim | 75:8b627804927c | 50 | AuthWriteMemory = 0x5A, |
IanBenzMaxim | 75:8b627804927c | 51 | AuthWriteBlockProtection = 0xCC, |
IanBenzMaxim | 49:36954b62f503 | 52 | }; |
IanBenzMaxim | 25:bdb1c5a53b58 | 53 | |
IanBenzMaxim | 62:43039aeca2ab | 54 | DS28E15_22_25::Segment DS28E15_22_25::Page::toSegment(unsigned int segmentNum) const |
IanBenzMaxim | 62:43039aeca2ab | 55 | { |
IanBenzMaxim | 74:23be10c32fa3 | 56 | if (segmentNum > (segmentsPerPage - 1)) |
IanBenzMaxim | 74:23be10c32fa3 | 57 | { |
IanBenzMaxim | 74:23be10c32fa3 | 58 | segmentNum = (segmentsPerPage - 1); |
IanBenzMaxim | 74:23be10c32fa3 | 59 | } |
IanBenzMaxim | 74:23be10c32fa3 | 60 | return Segment(*reinterpret_cast<const Segment::Buffer *>(&m_data[segmentNum * sizeof(Segment::Buffer)])); |
IanBenzMaxim | 62:43039aeca2ab | 61 | } |
IanBenzMaxim | 62:43039aeca2ab | 62 | |
IanBenzMaxim | 62:43039aeca2ab | 63 | void DS28E15_22_25::Page::fromSegment(unsigned int segmentNum, const Segment & segment) |
IanBenzMaxim | 62:43039aeca2ab | 64 | { |
IanBenzMaxim | 74:23be10c32fa3 | 65 | if (segmentNum > (segmentsPerPage - 1)) |
IanBenzMaxim | 74:23be10c32fa3 | 66 | { |
IanBenzMaxim | 74:23be10c32fa3 | 67 | segmentNum = (segmentsPerPage - 1); |
IanBenzMaxim | 74:23be10c32fa3 | 68 | } |
IanBenzMaxim | 74:23be10c32fa3 | 69 | std::memcpy(&m_data[segmentNum * sizeof(Segment::Buffer)], &static_cast<const Segment::Buffer &>(segment), Segment::length); |
IanBenzMaxim | 62:43039aeca2ab | 70 | } |
IanBenzMaxim | 62:43039aeca2ab | 71 | |
IanBenzMaxim | 73:2cecc1372acc | 72 | DS28E15_22_25::BlockProtection::BlockProtection(bool readProtection, bool writeProtection, bool eepromEmulation, bool authProtection, uint8_t blockNum) |
IanBenzMaxim | 34:11fffbe98ef9 | 73 | { |
IanBenzMaxim | 74:23be10c32fa3 | 74 | setReadProtection(readProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 75 | setWriteProtection(writeProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 76 | setEepromEmulation(eepromEmulation); |
IanBenzMaxim | 74:23be10c32fa3 | 77 | setAuthProtection(authProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 78 | setBlockNum(blockNum); |
IanBenzMaxim | 34:11fffbe98ef9 | 79 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 80 | |
IanBenzMaxim | 73:2cecc1372acc | 81 | void DS28E15_22_25::BlockProtection::setBlockNum(uint8_t blockNum) |
IanBenzMaxim | 34:11fffbe98ef9 | 82 | { |
IanBenzMaxim | 74:23be10c32fa3 | 83 | m_status &= ~blockNumMask; |
IanBenzMaxim | 74:23be10c32fa3 | 84 | m_status |= (blockNum & blockNumMask); |
IanBenzMaxim | 34:11fffbe98ef9 | 85 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 86 | |
IanBenzMaxim | 34:11fffbe98ef9 | 87 | bool DS28E15_22_25::BlockProtection::noProtection() const |
IanBenzMaxim | 34:11fffbe98ef9 | 88 | { |
IanBenzMaxim | 74:23be10c32fa3 | 89 | return !readProtection() && !writeProtection() && !eepromEmulation() && !authProtection(); |
IanBenzMaxim | 34:11fffbe98ef9 | 90 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 91 | |
IanBenzMaxim | 34:11fffbe98ef9 | 92 | void DS28E15_22_25::BlockProtection::setReadProtection(bool readProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 93 | { |
IanBenzMaxim | 74:23be10c32fa3 | 94 | if (readProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 95 | { |
IanBenzMaxim | 74:23be10c32fa3 | 96 | m_status |= readProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 97 | } |
IanBenzMaxim | 74:23be10c32fa3 | 98 | else |
IanBenzMaxim | 74:23be10c32fa3 | 99 | { |
IanBenzMaxim | 74:23be10c32fa3 | 100 | m_status &= ~readProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 101 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 102 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 103 | |
IanBenzMaxim | 34:11fffbe98ef9 | 104 | void DS28E15_22_25::BlockProtection::setWriteProtection(bool writeProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 105 | { |
IanBenzMaxim | 74:23be10c32fa3 | 106 | if (writeProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 107 | { |
IanBenzMaxim | 74:23be10c32fa3 | 108 | m_status |= writeProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 109 | } |
IanBenzMaxim | 74:23be10c32fa3 | 110 | else |
IanBenzMaxim | 74:23be10c32fa3 | 111 | { |
IanBenzMaxim | 74:23be10c32fa3 | 112 | m_status &= ~writeProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 113 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 114 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 115 | |
IanBenzMaxim | 34:11fffbe98ef9 | 116 | void DS28E15_22_25::BlockProtection::setEepromEmulation(bool eepromEmulation) |
IanBenzMaxim | 34:11fffbe98ef9 | 117 | { |
IanBenzMaxim | 74:23be10c32fa3 | 118 | if (eepromEmulation) |
IanBenzMaxim | 74:23be10c32fa3 | 119 | { |
IanBenzMaxim | 74:23be10c32fa3 | 120 | m_status |= eepromEmulationMask; |
IanBenzMaxim | 74:23be10c32fa3 | 121 | } |
IanBenzMaxim | 74:23be10c32fa3 | 122 | else |
IanBenzMaxim | 74:23be10c32fa3 | 123 | { |
IanBenzMaxim | 74:23be10c32fa3 | 124 | m_status &= ~eepromEmulationMask; |
IanBenzMaxim | 74:23be10c32fa3 | 125 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 126 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 127 | |
IanBenzMaxim | 34:11fffbe98ef9 | 128 | void DS28E15_22_25::BlockProtection::setAuthProtection(bool authProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 129 | { |
IanBenzMaxim | 74:23be10c32fa3 | 130 | if (authProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 131 | { |
IanBenzMaxim | 74:23be10c32fa3 | 132 | m_status |= authProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 133 | } |
IanBenzMaxim | 74:23be10c32fa3 | 134 | else |
IanBenzMaxim | 74:23be10c32fa3 | 135 | { |
IanBenzMaxim | 74:23be10c32fa3 | 136 | m_status &= ~authProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 137 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 138 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 139 | |
IanBenzMaxim | 77:529edb329ee0 | 140 | DS28E15_22_25::DS28E15_22_25(RandomAccessRomIterator & selector, bool lowVoltage) |
IanBenzMaxim | 77:529edb329ee0 | 141 | : OneWireSlave(selector), lowVoltage(lowVoltage) |
IanBenzMaxim | 25:bdb1c5a53b58 | 142 | { |
IanBenzMaxim | 74:23be10c32fa3 | 143 | std::memset(manId, 0x00, manId.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 144 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 145 | |
IanBenzMaxim | 34:11fffbe98ef9 | 146 | DS28E15_22_25::MemoryPages DS28E15_22_25::memoryPages() |
IanBenzMaxim | 25:bdb1c5a53b58 | 147 | { |
IanBenzMaxim | 74:23be10c32fa3 | 148 | MemoryPages pages; |
IanBenzMaxim | 74:23be10c32fa3 | 149 | |
IanBenzMaxim | 74:23be10c32fa3 | 150 | switch (romId.familyCode()) |
IanBenzMaxim | 74:23be10c32fa3 | 151 | { |
IanBenzMaxim | 75:8b627804927c | 152 | case DS28E25_Family: |
IanBenzMaxim | 75:8b627804927c | 153 | pages = DS28E25_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 154 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 155 | |
IanBenzMaxim | 75:8b627804927c | 156 | case DS28E22_Family: |
IanBenzMaxim | 75:8b627804927c | 157 | pages = DS28E22_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 158 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 159 | |
IanBenzMaxim | 75:8b627804927c | 160 | case DS28E15_Family: |
IanBenzMaxim | 75:8b627804927c | 161 | pages = DS28E15_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 162 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 163 | |
IanBenzMaxim | 74:23be10c32fa3 | 164 | default: |
IanBenzMaxim | 75:8b627804927c | 165 | pages = Unknown_Pages; |
IanBenzMaxim | 74:23be10c32fa3 | 166 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 167 | } |
IanBenzMaxim | 74:23be10c32fa3 | 168 | |
IanBenzMaxim | 74:23be10c32fa3 | 169 | return pages; |
IanBenzMaxim | 25:bdb1c5a53b58 | 170 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 171 | |
IanBenzMaxim | 34:11fffbe98ef9 | 172 | DS28E15_22_25::ProtectionBlocks DS28E15_22_25::protectionBlocks() |
IanBenzMaxim | 25:bdb1c5a53b58 | 173 | { |
IanBenzMaxim | 74:23be10c32fa3 | 174 | ProtectionBlocks blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 175 | |
IanBenzMaxim | 74:23be10c32fa3 | 176 | switch (romId.familyCode()) |
IanBenzMaxim | 74:23be10c32fa3 | 177 | { |
IanBenzMaxim | 75:8b627804927c | 178 | case DS28E25_Family: |
IanBenzMaxim | 75:8b627804927c | 179 | blocks = DS28E25_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 180 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 181 | |
IanBenzMaxim | 75:8b627804927c | 182 | case DS28E22_Family: |
IanBenzMaxim | 75:8b627804927c | 183 | blocks = DS28E22_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 184 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 185 | |
IanBenzMaxim | 75:8b627804927c | 186 | case DS28E15_Family: |
IanBenzMaxim | 75:8b627804927c | 187 | blocks = DS28E15_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 188 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 189 | |
IanBenzMaxim | 74:23be10c32fa3 | 190 | default: |
IanBenzMaxim | 75:8b627804927c | 191 | blocks = Unknown_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 192 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 193 | } |
IanBenzMaxim | 74:23be10c32fa3 | 194 | |
IanBenzMaxim | 74:23be10c32fa3 | 195 | return blocks; |
IanBenzMaxim | 25:bdb1c5a53b58 | 196 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 197 | |
IanBenzMaxim | 74:23be10c32fa3 | 198 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthBlockProtection(const ISha256MacCoproc & MacCoproc, const BlockProtection & newProtection, const BlockProtection & oldProtection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 199 | { |
IanBenzMaxim | 74:23be10c32fa3 | 200 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 201 | int cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 202 | Mac mac; |
IanBenzMaxim | 77:529edb329ee0 | 203 | |
IanBenzMaxim | 77:529edb329ee0 | 204 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 205 | { |
IanBenzMaxim | 77:529edb329ee0 | 206 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 207 | } |
IanBenzMaxim | 74:23be10c32fa3 | 208 | |
IanBenzMaxim | 75:8b627804927c | 209 | buf[cnt++] = AuthWriteBlockProtection; |
IanBenzMaxim | 74:23be10c32fa3 | 210 | buf[cnt++] = newProtection.statusByte(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 211 | |
IanBenzMaxim | 74:23be10c32fa3 | 212 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 213 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 214 | |
IanBenzMaxim | 74:23be10c32fa3 | 215 | // read first CRC byte |
IanBenzMaxim | 77:529edb329ee0 | 216 | master().OWReadByte(buf[cnt++]); |
IanBenzMaxim | 74:23be10c32fa3 | 217 | |
IanBenzMaxim | 74:23be10c32fa3 | 218 | // read the last CRC and enable |
IanBenzMaxim | 77:529edb329ee0 | 219 | master().OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 220 | |
IanBenzMaxim | 74:23be10c32fa3 | 221 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 222 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 223 | |
IanBenzMaxim | 74:23be10c32fa3 | 224 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 225 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 226 | |
IanBenzMaxim | 74:23be10c32fa3 | 227 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 228 | if (OneWireMaster::calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 229 | { |
IanBenzMaxim | 77:529edb329ee0 | 230 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 231 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 232 | |
IanBenzMaxim | 74:23be10c32fa3 | 233 | ISha256MacCoproc::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 234 | result = computeProtectionWriteMac(MacCoproc, newProtection, oldProtection, romId, manId, mac); |
IanBenzMaxim | 74:23be10c32fa3 | 235 | if (result != ISha256MacCoproc::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 236 | { |
IanBenzMaxim | 74:23be10c32fa3 | 237 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 238 | } |
IanBenzMaxim | 74:23be10c32fa3 | 239 | cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 240 | |
IanBenzMaxim | 74:23be10c32fa3 | 241 | // send the MAC |
IanBenzMaxim | 77:529edb329ee0 | 242 | master().OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 74:23be10c32fa3 | 243 | |
IanBenzMaxim | 74:23be10c32fa3 | 244 | // Read CRC and CS byte |
IanBenzMaxim | 77:529edb329ee0 | 245 | master().OWReadBlock(&buf[cnt], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 246 | cnt += 3; |
IanBenzMaxim | 25:bdb1c5a53b58 | 247 | |
IanBenzMaxim | 74:23be10c32fa3 | 248 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 249 | if (OneWireMaster::calculateCrc16(buf, 0, (cnt - 1), OneWireMaster::calculateCrc16(mac, 0, mac.length)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 250 | { |
IanBenzMaxim | 77:529edb329ee0 | 251 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 252 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 253 | |
IanBenzMaxim | 74:23be10c32fa3 | 254 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 255 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 256 | { |
IanBenzMaxim | 74:23be10c32fa3 | 257 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 258 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 259 | |
IanBenzMaxim | 74:23be10c32fa3 | 260 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 261 | // DATASHEET_CORRECTION - last bit in release is a read-zero so don't check echo of write byte |
IanBenzMaxim | 77:529edb329ee0 | 262 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 263 | |
IanBenzMaxim | 74:23be10c32fa3 | 264 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 265 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 266 | |
IanBenzMaxim | 74:23be10c32fa3 | 267 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 268 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 269 | |
IanBenzMaxim | 74:23be10c32fa3 | 270 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 271 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 272 | |
IanBenzMaxim | 74:23be10c32fa3 | 273 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 274 | { |
IanBenzMaxim | 74:23be10c32fa3 | 275 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 276 | } |
IanBenzMaxim | 74:23be10c32fa3 | 277 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 278 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 279 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 280 | |
IanBenzMaxim | 74:23be10c32fa3 | 281 | OneWireSlave::CmdResult DS28E15_22_25::writeBlockProtection(const BlockProtection & protection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 282 | { |
IanBenzMaxim | 74:23be10c32fa3 | 283 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 284 | int cnt = 0; |
IanBenzMaxim | 77:529edb329ee0 | 285 | |
IanBenzMaxim | 77:529edb329ee0 | 286 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 287 | { |
IanBenzMaxim | 77:529edb329ee0 | 288 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 289 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 290 | |
IanBenzMaxim | 75:8b627804927c | 291 | buf[cnt++] = WriteBlockProtection; |
IanBenzMaxim | 25:bdb1c5a53b58 | 292 | |
IanBenzMaxim | 74:23be10c32fa3 | 293 | // compute parameter byte |
IanBenzMaxim | 74:23be10c32fa3 | 294 | buf[cnt++] = protection.statusByte(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 295 | |
IanBenzMaxim | 77:529edb329ee0 | 296 | master().OWWriteBlock(&buf[0], cnt); |
IanBenzMaxim | 25:bdb1c5a53b58 | 297 | |
IanBenzMaxim | 74:23be10c32fa3 | 298 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 299 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 300 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 301 | |
IanBenzMaxim | 74:23be10c32fa3 | 302 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 303 | if (OneWireMaster::calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 304 | { |
IanBenzMaxim | 77:529edb329ee0 | 305 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 306 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 307 | |
IanBenzMaxim | 74:23be10c32fa3 | 308 | // sent release |
IanBenzMaxim | 77:529edb329ee0 | 309 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 310 | |
IanBenzMaxim | 74:23be10c32fa3 | 311 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 312 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 313 | |
IanBenzMaxim | 74:23be10c32fa3 | 314 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 315 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 316 | |
IanBenzMaxim | 74:23be10c32fa3 | 317 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 318 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 319 | |
IanBenzMaxim | 74:23be10c32fa3 | 320 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 321 | { |
IanBenzMaxim | 74:23be10c32fa3 | 322 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 323 | } |
IanBenzMaxim | 74:23be10c32fa3 | 324 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 325 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 326 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 327 | |
IanBenzMaxim | 34:11fffbe98ef9 | 328 | OneWireSlave::CmdResult DS28E15_22_25::readBlockProtection(unsigned int blockNum, BlockProtection & protection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 329 | { |
IanBenzMaxim | 74:23be10c32fa3 | 330 | uint8_t buf; |
IanBenzMaxim | 77:529edb329ee0 | 331 | CmdResult result; |
IanBenzMaxim | 77:529edb329ee0 | 332 | |
IanBenzMaxim | 77:529edb329ee0 | 333 | result = readStatus(false, false, blockNum, &buf); |
IanBenzMaxim | 74:23be10c32fa3 | 334 | if (result == Success) |
IanBenzMaxim | 74:23be10c32fa3 | 335 | { |
IanBenzMaxim | 74:23be10c32fa3 | 336 | protection.setStatusByte(buf); |
IanBenzMaxim | 74:23be10c32fa3 | 337 | } |
IanBenzMaxim | 74:23be10c32fa3 | 338 | return result; |
IanBenzMaxim | 25:bdb1c5a53b58 | 339 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 340 | |
IanBenzMaxim | 74:23be10c32fa3 | 341 | template <DS28E15_22_25::ProtectionBlocks blocks> OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[blocks]) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 342 | { |
IanBenzMaxim | 74:23be10c32fa3 | 343 | uint8_t buf[blocks]; |
IanBenzMaxim | 74:23be10c32fa3 | 344 | CmdResult result = readStatus(false, true, 0, buf); |
IanBenzMaxim | 74:23be10c32fa3 | 345 | if (result == Success) |
IanBenzMaxim | 74:23be10c32fa3 | 346 | { |
IanBenzMaxim | 74:23be10c32fa3 | 347 | for (size_t i = 0; i < blocks; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 348 | { |
IanBenzMaxim | 74:23be10c32fa3 | 349 | protection[i].setStatusByte(buf[i]); |
IanBenzMaxim | 74:23be10c32fa3 | 350 | } |
IanBenzMaxim | 74:23be10c32fa3 | 351 | } |
IanBenzMaxim | 74:23be10c32fa3 | 352 | return result; |
IanBenzMaxim | 50:e967f9befbd0 | 353 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 354 | |
IanBenzMaxim | 75:8b627804927c | 355 | OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[DS28E15_Blocks]) const |
IanBenzMaxim | 50:e967f9befbd0 | 356 | { |
IanBenzMaxim | 75:8b627804927c | 357 | return readAllBlockProtection<DS28E15_Blocks>(protection); |
IanBenzMaxim | 50:e967f9befbd0 | 358 | } |
IanBenzMaxim | 50:e967f9befbd0 | 359 | |
IanBenzMaxim | 75:8b627804927c | 360 | OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[DS28E25_Blocks]) const |
IanBenzMaxim | 50:e967f9befbd0 | 361 | { |
IanBenzMaxim | 75:8b627804927c | 362 | return readAllBlockProtection<DS28E25_Blocks>(protection); |
IanBenzMaxim | 50:e967f9befbd0 | 363 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 364 | |
IanBenzMaxim | 51:a65f031e997b | 365 | OneWireSlave::CmdResult DS28E15_22_25::readPersonality(Personality & personality) const |
IanBenzMaxim | 50:e967f9befbd0 | 366 | { |
IanBenzMaxim | 74:23be10c32fa3 | 367 | return readStatus(true, false, 0, personality.bytes); |
IanBenzMaxim | 50:e967f9befbd0 | 368 | } |
IanBenzMaxim | 50:e967f9befbd0 | 369 | |
IanBenzMaxim | 73:2cecc1372acc | 370 | OneWireSlave::CmdResult DS28E15_22_25::readStatus(bool personality, bool allpages, unsigned int blockNum, uint8_t * rdbuf) const |
IanBenzMaxim | 50:e967f9befbd0 | 371 | { |
IanBenzMaxim | 74:23be10c32fa3 | 372 | const size_t crcLen = 4, ds28e22_25_pagesPerBlock = 2; |
IanBenzMaxim | 74:23be10c32fa3 | 373 | |
IanBenzMaxim | 74:23be10c32fa3 | 374 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 375 | size_t cnt = 0, offset = 0; |
IanBenzMaxim | 77:529edb329ee0 | 376 | |
IanBenzMaxim | 77:529edb329ee0 | 377 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 378 | { |
IanBenzMaxim | 77:529edb329ee0 | 379 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 380 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 381 | |
IanBenzMaxim | 75:8b627804927c | 382 | buf[cnt++] = ReadStatus; |
IanBenzMaxim | 74:23be10c32fa3 | 383 | if (personality) |
IanBenzMaxim | 74:23be10c32fa3 | 384 | { |
IanBenzMaxim | 74:23be10c32fa3 | 385 | buf[cnt++] = 0xE0; |
IanBenzMaxim | 74:23be10c32fa3 | 386 | } |
IanBenzMaxim | 74:23be10c32fa3 | 387 | else if (allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 388 | { |
IanBenzMaxim | 74:23be10c32fa3 | 389 | buf[cnt++] = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 390 | } |
IanBenzMaxim | 74:23be10c32fa3 | 391 | else |
IanBenzMaxim | 74:23be10c32fa3 | 392 | { |
IanBenzMaxim | 74:23be10c32fa3 | 393 | // Convert to page number for DS28E22 and DS28E25 |
IanBenzMaxim | 74:23be10c32fa3 | 394 | buf[cnt] = blockNum; |
IanBenzMaxim | 75:8b627804927c | 395 | if ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 396 | { |
IanBenzMaxim | 74:23be10c32fa3 | 397 | buf[cnt] *= ds28e22_25_pagesPerBlock; |
IanBenzMaxim | 74:23be10c32fa3 | 398 | } |
IanBenzMaxim | 74:23be10c32fa3 | 399 | cnt++; |
IanBenzMaxim | 74:23be10c32fa3 | 400 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 401 | |
IanBenzMaxim | 74:23be10c32fa3 | 402 | // send the command |
IanBenzMaxim | 77:529edb329ee0 | 403 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 50:e967f9befbd0 | 404 | |
IanBenzMaxim | 74:23be10c32fa3 | 405 | offset = cnt + 2; |
IanBenzMaxim | 50:e967f9befbd0 | 406 | |
IanBenzMaxim | 74:23be10c32fa3 | 407 | // Set data length |
IanBenzMaxim | 74:23be10c32fa3 | 408 | size_t rdnum; |
IanBenzMaxim | 74:23be10c32fa3 | 409 | if (personality) |
IanBenzMaxim | 74:23be10c32fa3 | 410 | { |
IanBenzMaxim | 74:23be10c32fa3 | 411 | rdnum = 4; |
IanBenzMaxim | 74:23be10c32fa3 | 412 | } |
IanBenzMaxim | 74:23be10c32fa3 | 413 | else if (!allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 414 | { |
IanBenzMaxim | 74:23be10c32fa3 | 415 | rdnum = 1; |
IanBenzMaxim | 74:23be10c32fa3 | 416 | } |
IanBenzMaxim | 75:8b627804927c | 417 | else if ((romId.familyCode() == DS28E22_Family) || (romId.familyCode() == DS28E25_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 418 | { |
IanBenzMaxim | 75:8b627804927c | 419 | rdnum = DS28E25_Pages; // Need to read extra data on DS28E22 to get CRC16. |
IanBenzMaxim | 74:23be10c32fa3 | 420 | } |
IanBenzMaxim | 74:23be10c32fa3 | 421 | else // DS28E15 |
IanBenzMaxim | 74:23be10c32fa3 | 422 | { |
IanBenzMaxim | 75:8b627804927c | 423 | rdnum = DS28E15_Blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 424 | } |
IanBenzMaxim | 74:23be10c32fa3 | 425 | rdnum += crcLen; // Add in CRC length |
IanBenzMaxim | 50:e967f9befbd0 | 426 | |
IanBenzMaxim | 74:23be10c32fa3 | 427 | // Read the bytes |
IanBenzMaxim | 77:529edb329ee0 | 428 | master().OWReadBlock(&buf[cnt], rdnum); |
IanBenzMaxim | 74:23be10c32fa3 | 429 | cnt += rdnum; |
IanBenzMaxim | 50:e967f9befbd0 | 430 | |
IanBenzMaxim | 74:23be10c32fa3 | 431 | // check the first CRC16 |
IanBenzMaxim | 75:8b627804927c | 432 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 433 | { |
IanBenzMaxim | 77:529edb329ee0 | 434 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 435 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 436 | |
IanBenzMaxim | 74:23be10c32fa3 | 437 | if (personality || allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 438 | { |
IanBenzMaxim | 74:23be10c32fa3 | 439 | // check the second CRC16 |
IanBenzMaxim | 75:8b627804927c | 440 | if (OneWireMaster::calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 441 | { |
IanBenzMaxim | 77:529edb329ee0 | 442 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 443 | } |
IanBenzMaxim | 74:23be10c32fa3 | 444 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 445 | |
IanBenzMaxim | 74:23be10c32fa3 | 446 | // copy the data to the read buffer |
IanBenzMaxim | 74:23be10c32fa3 | 447 | rdnum -= crcLen; |
IanBenzMaxim | 75:8b627804927c | 448 | if (allpages && ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family))) |
IanBenzMaxim | 50:e967f9befbd0 | 449 | { |
IanBenzMaxim | 75:8b627804927c | 450 | if (romId.familyCode() == DS28E22_Family) |
IanBenzMaxim | 74:23be10c32fa3 | 451 | { |
IanBenzMaxim | 75:8b627804927c | 452 | rdnum -= (DS28E25_Pages - DS28E22_Pages); |
IanBenzMaxim | 74:23be10c32fa3 | 453 | } |
IanBenzMaxim | 74:23be10c32fa3 | 454 | |
IanBenzMaxim | 74:23be10c32fa3 | 455 | for (size_t i = 0; i < (rdnum / ds28e22_25_pagesPerBlock); i++) |
IanBenzMaxim | 74:23be10c32fa3 | 456 | { |
IanBenzMaxim | 74:23be10c32fa3 | 457 | rdbuf[i] = (buf[offset + (i * ds28e22_25_pagesPerBlock)] & 0xF0); // Upper nibble |
IanBenzMaxim | 74:23be10c32fa3 | 458 | rdbuf[i] |= ((buf[offset + (i * ds28e22_25_pagesPerBlock)] & 0x0F) / ds28e22_25_pagesPerBlock); // Lower nibble |
IanBenzMaxim | 74:23be10c32fa3 | 459 | } |
IanBenzMaxim | 50:e967f9befbd0 | 460 | } |
IanBenzMaxim | 74:23be10c32fa3 | 461 | else |
IanBenzMaxim | 74:23be10c32fa3 | 462 | { |
IanBenzMaxim | 74:23be10c32fa3 | 463 | std::memcpy(rdbuf, &buf[offset], rdnum); |
IanBenzMaxim | 74:23be10c32fa3 | 464 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 465 | |
IanBenzMaxim | 74:23be10c32fa3 | 466 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 467 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 468 | |
IanBenzMaxim | 73:2cecc1372acc | 469 | 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 | 470 | { |
IanBenzMaxim | 74:23be10c32fa3 | 471 | ISha256MacCoproc::AuthMacData authMacData; |
IanBenzMaxim | 49:36954b62f503 | 472 | |
IanBenzMaxim | 74:23be10c32fa3 | 473 | // insert ROM number or FF |
IanBenzMaxim | 74:23be10c32fa3 | 474 | std::memcpy(authMacData, romId, RomId::byteLen); |
IanBenzMaxim | 49:36954b62f503 | 475 | |
IanBenzMaxim | 74:23be10c32fa3 | 476 | authMacData[10] = pageNum; |
IanBenzMaxim | 25:bdb1c5a53b58 | 477 | |
IanBenzMaxim | 74:23be10c32fa3 | 478 | authMacData[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 479 | authMacData[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 480 | |
IanBenzMaxim | 74:23be10c32fa3 | 481 | authMacData[11] = 0x00; |
IanBenzMaxim | 25:bdb1c5a53b58 | 482 | |
IanBenzMaxim | 74:23be10c32fa3 | 483 | return MacCoproc.computeAuthMac(ISha256MacCoproc::DevicePage(pageData), challenge, authMacData, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 484 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 485 | |
IanBenzMaxim | 73:2cecc1372acc | 486 | 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 | 487 | { |
IanBenzMaxim | 74:23be10c32fa3 | 488 | RomId romId; |
IanBenzMaxim | 74:23be10c32fa3 | 489 | std::memset(romId, 0xFF, RomId::byteLen); |
IanBenzMaxim | 74:23be10c32fa3 | 490 | return computeAuthMac(MacCoproc, pageData, pageNum, challenge, romId, manId, mac); |
IanBenzMaxim | 49:36954b62f503 | 491 | } |
IanBenzMaxim | 49:36954b62f503 | 492 | |
IanBenzMaxim | 74:23be10c32fa3 | 493 | OneWireSlave::CmdResult DS28E15_22_25::computeReadPageMac(unsigned int page_num, bool anon, Mac & mac) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 494 | { |
IanBenzMaxim | 74:23be10c32fa3 | 495 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 496 | int cnt = 0; |
IanBenzMaxim | 77:529edb329ee0 | 497 | |
IanBenzMaxim | 77:529edb329ee0 | 498 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 499 | { |
IanBenzMaxim | 77:529edb329ee0 | 500 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 501 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 502 | |
IanBenzMaxim | 75:8b627804927c | 503 | buf[cnt++] = ComputePageMac; |
IanBenzMaxim | 74:23be10c32fa3 | 504 | buf[cnt++] = ((anon) ? 0xE0 : 0x00) | page_num; |
IanBenzMaxim | 74:23be10c32fa3 | 505 | |
IanBenzMaxim | 74:23be10c32fa3 | 506 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 507 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 508 | |
IanBenzMaxim | 74:23be10c32fa3 | 509 | // read first CRC byte |
IanBenzMaxim | 77:529edb329ee0 | 510 | master().OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 511 | |
IanBenzMaxim | 74:23be10c32fa3 | 512 | // read the last CRC and enable |
IanBenzMaxim | 77:529edb329ee0 | 513 | master().OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 514 | |
IanBenzMaxim | 74:23be10c32fa3 | 515 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 516 | wait_ms(shaComputationDelayMs * 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 517 | |
IanBenzMaxim | 74:23be10c32fa3 | 518 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 519 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 520 | |
IanBenzMaxim | 74:23be10c32fa3 | 521 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 522 | if (OneWireMaster::calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 523 | { |
IanBenzMaxim | 77:529edb329ee0 | 524 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 525 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 526 | |
IanBenzMaxim | 74:23be10c32fa3 | 527 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 528 | master().OWReadByte(cs); |
IanBenzMaxim | 74:23be10c32fa3 | 529 | if (cs != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 530 | { |
IanBenzMaxim | 74:23be10c32fa3 | 531 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 532 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 533 | |
IanBenzMaxim | 74:23be10c32fa3 | 534 | // read the MAC and CRC |
IanBenzMaxim | 77:529edb329ee0 | 535 | master().OWReadBlock(&buf[0], (Mac::length + 2)); |
IanBenzMaxim | 25:bdb1c5a53b58 | 536 | |
IanBenzMaxim | 74:23be10c32fa3 | 537 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 538 | if (OneWireMaster::calculateCrc16(buf, 0, (Mac::length + 2)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 539 | { |
IanBenzMaxim | 77:529edb329ee0 | 540 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 541 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 542 | |
IanBenzMaxim | 74:23be10c32fa3 | 543 | // copy MAC to return buffer |
IanBenzMaxim | 74:23be10c32fa3 | 544 | std::memcpy(mac, buf, Mac::length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 545 | |
IanBenzMaxim | 74:23be10c32fa3 | 546 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 547 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 548 | |
IanBenzMaxim | 74:23be10c32fa3 | 549 | OneWireSlave::CmdResult DS28E15_22_25::computeSecret(unsigned int page_num, bool lock) |
IanBenzMaxim | 25:bdb1c5a53b58 | 550 | { |
IanBenzMaxim | 74:23be10c32fa3 | 551 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 552 | int cnt = 0; |
IanBenzMaxim | 77:529edb329ee0 | 553 | |
IanBenzMaxim | 77:529edb329ee0 | 554 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 555 | { |
IanBenzMaxim | 77:529edb329ee0 | 556 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 557 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 558 | |
IanBenzMaxim | 75:8b627804927c | 559 | buf[cnt++] = ComputeAndLockSecret; |
IanBenzMaxim | 74:23be10c32fa3 | 560 | buf[cnt++] = (lock) ? (0xE0 | page_num) : page_num; // lock flag |
IanBenzMaxim | 25:bdb1c5a53b58 | 561 | |
IanBenzMaxim | 74:23be10c32fa3 | 562 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 563 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 564 | |
IanBenzMaxim | 74:23be10c32fa3 | 565 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 566 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 567 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 568 | |
IanBenzMaxim | 74:23be10c32fa3 | 569 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 570 | if (OneWireMaster::calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 571 | { |
IanBenzMaxim | 77:529edb329ee0 | 572 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 573 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 574 | |
IanBenzMaxim | 74:23be10c32fa3 | 575 | // send release and strong pull-up |
IanBenzMaxim | 77:529edb329ee0 | 576 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 577 | |
IanBenzMaxim | 74:23be10c32fa3 | 578 | // now wait for the MAC computations and secret programming. |
IanBenzMaxim | 74:23be10c32fa3 | 579 | wait_ms(shaComputationDelayMs * 2 + secretEepromWriteDelayMs()); |
IanBenzMaxim | 25:bdb1c5a53b58 | 580 | |
IanBenzMaxim | 74:23be10c32fa3 | 581 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 582 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 583 | |
IanBenzMaxim | 74:23be10c32fa3 | 584 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 585 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 586 | |
IanBenzMaxim | 74:23be10c32fa3 | 587 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 588 | { |
IanBenzMaxim | 74:23be10c32fa3 | 589 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 590 | } |
IanBenzMaxim | 74:23be10c32fa3 | 591 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 592 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 593 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 594 | |
IanBenzMaxim | 34:11fffbe98ef9 | 595 | OneWireSlave::CmdResult DS28E15_22_25::writeScratchpad(const Scratchpad & data) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 596 | { |
IanBenzMaxim | 74:23be10c32fa3 | 597 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 598 | int cnt = 0, offset; |
IanBenzMaxim | 77:529edb329ee0 | 599 | |
IanBenzMaxim | 77:529edb329ee0 | 600 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 601 | { |
IanBenzMaxim | 77:529edb329ee0 | 602 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 603 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 604 | |
IanBenzMaxim | 75:8b627804927c | 605 | buf[cnt++] = ReadWriteScratchpad; |
IanBenzMaxim | 75:8b627804927c | 606 | if ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 607 | { |
IanBenzMaxim | 74:23be10c32fa3 | 608 | buf[cnt++] = 0x20; |
IanBenzMaxim | 74:23be10c32fa3 | 609 | } |
IanBenzMaxim | 74:23be10c32fa3 | 610 | else |
IanBenzMaxim | 74:23be10c32fa3 | 611 | { |
IanBenzMaxim | 74:23be10c32fa3 | 612 | buf[cnt++] = 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 613 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 614 | |
IanBenzMaxim | 74:23be10c32fa3 | 615 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 616 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 617 | |
IanBenzMaxim | 74:23be10c32fa3 | 618 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 619 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 620 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 621 | |
IanBenzMaxim | 74:23be10c32fa3 | 622 | offset = cnt; |
IanBenzMaxim | 25:bdb1c5a53b58 | 623 | |
IanBenzMaxim | 74:23be10c32fa3 | 624 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 625 | std::memcpy(&buf[cnt], data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 626 | cnt += data.length; |
IanBenzMaxim | 25:bdb1c5a53b58 | 627 | |
IanBenzMaxim | 74:23be10c32fa3 | 628 | // Send the data |
IanBenzMaxim | 77:529edb329ee0 | 629 | master().OWWriteBlock(data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 630 | |
IanBenzMaxim | 74:23be10c32fa3 | 631 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 632 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 633 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 634 | |
IanBenzMaxim | 74:23be10c32fa3 | 635 | // check first CRC16 |
IanBenzMaxim | 75:8b627804927c | 636 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 637 | { |
IanBenzMaxim | 77:529edb329ee0 | 638 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 639 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 640 | |
IanBenzMaxim | 74:23be10c32fa3 | 641 | // check the second CRC16 |
IanBenzMaxim | 75:8b627804927c | 642 | if (OneWireMaster::calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 643 | { |
IanBenzMaxim | 77:529edb329ee0 | 644 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 645 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 646 | |
IanBenzMaxim | 74:23be10c32fa3 | 647 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 648 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 649 | |
IanBenzMaxim | 49:36954b62f503 | 650 | OneWireSlave::CmdResult DS28E15_22_25::readScratchpad(Scratchpad & data) const |
IanBenzMaxim | 49:36954b62f503 | 651 | { |
IanBenzMaxim | 74:23be10c32fa3 | 652 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 653 | int cnt = 0, offset; |
IanBenzMaxim | 77:529edb329ee0 | 654 | |
IanBenzMaxim | 77:529edb329ee0 | 655 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 656 | { |
IanBenzMaxim | 77:529edb329ee0 | 657 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 658 | } |
IanBenzMaxim | 49:36954b62f503 | 659 | |
IanBenzMaxim | 75:8b627804927c | 660 | buf[cnt++] = ReadWriteScratchpad; |
IanBenzMaxim | 75:8b627804927c | 661 | if ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 662 | { |
IanBenzMaxim | 74:23be10c32fa3 | 663 | buf[cnt++] = 0x2F; |
IanBenzMaxim | 74:23be10c32fa3 | 664 | } |
IanBenzMaxim | 74:23be10c32fa3 | 665 | else |
IanBenzMaxim | 74:23be10c32fa3 | 666 | { |
IanBenzMaxim | 74:23be10c32fa3 | 667 | buf[cnt++] = 0x0F; |
IanBenzMaxim | 74:23be10c32fa3 | 668 | } |
IanBenzMaxim | 49:36954b62f503 | 669 | |
IanBenzMaxim | 74:23be10c32fa3 | 670 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 671 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 49:36954b62f503 | 672 | |
IanBenzMaxim | 74:23be10c32fa3 | 673 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 674 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 675 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 676 | |
IanBenzMaxim | 74:23be10c32fa3 | 677 | offset = cnt; |
IanBenzMaxim | 49:36954b62f503 | 678 | |
IanBenzMaxim | 74:23be10c32fa3 | 679 | // Receive the data |
IanBenzMaxim | 77:529edb329ee0 | 680 | master().OWReadBlock(&buf[cnt], data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 681 | cnt += data.length; |
IanBenzMaxim | 74:23be10c32fa3 | 682 | |
IanBenzMaxim | 74:23be10c32fa3 | 683 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 684 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 685 | cnt += 2; |
IanBenzMaxim | 49:36954b62f503 | 686 | |
IanBenzMaxim | 74:23be10c32fa3 | 687 | // check first CRC16 |
IanBenzMaxim | 75:8b627804927c | 688 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 689 | { |
IanBenzMaxim | 77:529edb329ee0 | 690 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 691 | } |
IanBenzMaxim | 49:36954b62f503 | 692 | |
IanBenzMaxim | 74:23be10c32fa3 | 693 | // check the second CRC16 |
IanBenzMaxim | 75:8b627804927c | 694 | if (OneWireMaster::calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 695 | { |
IanBenzMaxim | 77:529edb329ee0 | 696 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 697 | } |
IanBenzMaxim | 49:36954b62f503 | 698 | |
IanBenzMaxim | 74:23be10c32fa3 | 699 | // Copy to output |
IanBenzMaxim | 74:23be10c32fa3 | 700 | std::memcpy(data, &buf[offset], data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 701 | |
IanBenzMaxim | 74:23be10c32fa3 | 702 | return Success; |
IanBenzMaxim | 49:36954b62f503 | 703 | } |
IanBenzMaxim | 49:36954b62f503 | 704 | |
IanBenzMaxim | 34:11fffbe98ef9 | 705 | OneWireSlave::CmdResult DS28E15_22_25::loadSecret(bool lock) |
IanBenzMaxim | 25:bdb1c5a53b58 | 706 | { |
IanBenzMaxim | 74:23be10c32fa3 | 707 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 708 | int cnt = 0; |
IanBenzMaxim | 77:529edb329ee0 | 709 | |
IanBenzMaxim | 77:529edb329ee0 | 710 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 711 | { |
IanBenzMaxim | 77:529edb329ee0 | 712 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 713 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 714 | |
IanBenzMaxim | 75:8b627804927c | 715 | buf[cnt++] = LoadAndLockSecret; |
IanBenzMaxim | 74:23be10c32fa3 | 716 | buf[cnt++] = (lock) ? 0xE0 : 0x00; // lock flag |
IanBenzMaxim | 74:23be10c32fa3 | 717 | |
IanBenzMaxim | 74:23be10c32fa3 | 718 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 719 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 720 | |
IanBenzMaxim | 74:23be10c32fa3 | 721 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 722 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 723 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 724 | |
IanBenzMaxim | 74:23be10c32fa3 | 725 | // check CRC16 |
IanBenzMaxim | 75:8b627804927c | 726 | if (OneWireMaster::calculateCrc16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 727 | { |
IanBenzMaxim | 77:529edb329ee0 | 728 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 729 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 730 | |
IanBenzMaxim | 74:23be10c32fa3 | 731 | // send release and strong pull-up |
IanBenzMaxim | 77:529edb329ee0 | 732 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 733 | |
IanBenzMaxim | 74:23be10c32fa3 | 734 | // now wait for the secret programming. |
IanBenzMaxim | 74:23be10c32fa3 | 735 | wait_ms(secretEepromWriteDelayMs()); |
IanBenzMaxim | 74:23be10c32fa3 | 736 | |
IanBenzMaxim | 74:23be10c32fa3 | 737 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 738 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 739 | |
IanBenzMaxim | 74:23be10c32fa3 | 740 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 741 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 742 | |
IanBenzMaxim | 74:23be10c32fa3 | 743 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 744 | { |
IanBenzMaxim | 74:23be10c32fa3 | 745 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 746 | } |
IanBenzMaxim | 74:23be10c32fa3 | 747 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 748 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 749 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 750 | |
IanBenzMaxim | 74:23be10c32fa3 | 751 | OneWireSlave::CmdResult DS28E15_22_25::readPage(unsigned int page, Page & rdbuf, bool continuing) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 752 | { |
IanBenzMaxim | 74:23be10c32fa3 | 753 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 754 | int cnt, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 755 | |
IanBenzMaxim | 74:23be10c32fa3 | 756 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 757 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 758 | |
IanBenzMaxim | 74:23be10c32fa3 | 759 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 760 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 761 | { |
IanBenzMaxim | 77:529edb329ee0 | 762 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 763 | { |
IanBenzMaxim | 77:529edb329ee0 | 764 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 765 | } |
IanBenzMaxim | 77:529edb329ee0 | 766 | |
IanBenzMaxim | 75:8b627804927c | 767 | buf[cnt++] = ReadMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 768 | buf[cnt++] = page; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 769 | |
IanBenzMaxim | 74:23be10c32fa3 | 770 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 771 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 772 | |
IanBenzMaxim | 74:23be10c32fa3 | 773 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 774 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 775 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 776 | |
IanBenzMaxim | 74:23be10c32fa3 | 777 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 778 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 779 | |
IanBenzMaxim | 74:23be10c32fa3 | 780 | // read data and CRC16 |
IanBenzMaxim | 77:529edb329ee0 | 781 | master().OWReadBlock(&buf[cnt], (rdbuf.length + 2)); |
IanBenzMaxim | 74:23be10c32fa3 | 782 | cnt += 34; |
IanBenzMaxim | 25:bdb1c5a53b58 | 783 | |
IanBenzMaxim | 74:23be10c32fa3 | 784 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 785 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 786 | { |
IanBenzMaxim | 75:8b627804927c | 787 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 788 | { |
IanBenzMaxim | 77:529edb329ee0 | 789 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 790 | } |
IanBenzMaxim | 74:23be10c32fa3 | 791 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 792 | |
IanBenzMaxim | 74:23be10c32fa3 | 793 | // check the second CRC16 |
IanBenzMaxim | 75:8b627804927c | 794 | if (OneWireMaster::calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 795 | { |
IanBenzMaxim | 77:529edb329ee0 | 796 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 797 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 798 | |
IanBenzMaxim | 74:23be10c32fa3 | 799 | // copy the data to the read buffer |
IanBenzMaxim | 74:23be10c32fa3 | 800 | std::memcpy(rdbuf, &buf[offset], rdbuf.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 801 | |
IanBenzMaxim | 74:23be10c32fa3 | 802 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 803 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 804 | |
IanBenzMaxim | 74:23be10c32fa3 | 805 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthSegmentMac(unsigned int pageNum, unsigned int segmentNum, const Segment & newData, const Mac & mac, bool continuing) |
IanBenzMaxim | 25:bdb1c5a53b58 | 806 | { |
IanBenzMaxim | 74:23be10c32fa3 | 807 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 808 | int cnt, i, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 809 | |
IanBenzMaxim | 74:23be10c32fa3 | 810 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 811 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 812 | |
IanBenzMaxim | 74:23be10c32fa3 | 813 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 814 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 815 | { |
IanBenzMaxim | 77:529edb329ee0 | 816 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 817 | { |
IanBenzMaxim | 77:529edb329ee0 | 818 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 819 | } |
IanBenzMaxim | 77:529edb329ee0 | 820 | |
IanBenzMaxim | 75:8b627804927c | 821 | buf[cnt++] = AuthWriteMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 822 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 823 | |
IanBenzMaxim | 74:23be10c32fa3 | 824 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 825 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 826 | |
IanBenzMaxim | 74:23be10c32fa3 | 827 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 828 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 829 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 830 | |
IanBenzMaxim | 74:23be10c32fa3 | 831 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 832 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 833 | |
IanBenzMaxim | 74:23be10c32fa3 | 834 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 835 | for (i = 0; i < newData.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 836 | { |
IanBenzMaxim | 74:23be10c32fa3 | 837 | buf[cnt++] = newData[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 838 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 839 | |
IanBenzMaxim | 74:23be10c32fa3 | 840 | // Send data |
IanBenzMaxim | 77:529edb329ee0 | 841 | master().OWWriteBlock(newData, newData.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 842 | |
IanBenzMaxim | 74:23be10c32fa3 | 843 | // read first CRC byte |
IanBenzMaxim | 77:529edb329ee0 | 844 | master().OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 845 | |
IanBenzMaxim | 74:23be10c32fa3 | 846 | // read the last CRC and enable power |
IanBenzMaxim | 77:529edb329ee0 | 847 | master().OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 848 | |
IanBenzMaxim | 74:23be10c32fa3 | 849 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 850 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 851 | |
IanBenzMaxim | 74:23be10c32fa3 | 852 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 853 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 854 | |
IanBenzMaxim | 74:23be10c32fa3 | 855 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 856 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 857 | { |
IanBenzMaxim | 75:8b627804927c | 858 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 859 | { |
IanBenzMaxim | 77:529edb329ee0 | 860 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 861 | } |
IanBenzMaxim | 74:23be10c32fa3 | 862 | } |
IanBenzMaxim | 74:23be10c32fa3 | 863 | |
IanBenzMaxim | 74:23be10c32fa3 | 864 | // check the second CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 865 | unsigned short CRC16 = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 866 | |
IanBenzMaxim | 74:23be10c32fa3 | 867 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
IanBenzMaxim | 75:8b627804927c | 868 | if ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 869 | { |
IanBenzMaxim | 74:23be10c32fa3 | 870 | if (continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 871 | { |
IanBenzMaxim | 75:8b627804927c | 872 | CRC16 = OneWireMaster::calculateCrc16(CRC16, 0xAA); |
IanBenzMaxim | 74:23be10c32fa3 | 873 | } |
IanBenzMaxim | 74:23be10c32fa3 | 874 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 875 | |
IanBenzMaxim | 75:8b627804927c | 876 | CRC16 = OneWireMaster::calculateCrc16(buf, offset, (cnt - offset), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 877 | |
IanBenzMaxim | 74:23be10c32fa3 | 878 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 879 | { |
IanBenzMaxim | 77:529edb329ee0 | 880 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 881 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 882 | |
IanBenzMaxim | 74:23be10c32fa3 | 883 | // transmit MAC as a block |
IanBenzMaxim | 77:529edb329ee0 | 884 | master().OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 885 | |
IanBenzMaxim | 74:23be10c32fa3 | 886 | // calculate CRC on MAC |
IanBenzMaxim | 75:8b627804927c | 887 | CRC16 = OneWireMaster::calculateCrc16(mac, 0, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 888 | |
IanBenzMaxim | 74:23be10c32fa3 | 889 | // append read of CRC16 and CS byte |
IanBenzMaxim | 77:529edb329ee0 | 890 | master().OWReadBlock(&buf[0], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 891 | cnt = 3; |
IanBenzMaxim | 74:23be10c32fa3 | 892 | |
IanBenzMaxim | 74:23be10c32fa3 | 893 | // ckeck CRC16 |
IanBenzMaxim | 75:8b627804927c | 894 | CRC16 = OneWireMaster::calculateCrc16(buf, 0, (cnt - 1), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 895 | |
IanBenzMaxim | 74:23be10c32fa3 | 896 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 897 | { |
IanBenzMaxim | 77:529edb329ee0 | 898 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 899 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 900 | |
IanBenzMaxim | 74:23be10c32fa3 | 901 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 902 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 903 | { |
IanBenzMaxim | 74:23be10c32fa3 | 904 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 905 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 906 | |
IanBenzMaxim | 74:23be10c32fa3 | 907 | // send release and strong pull-up |
IanBenzMaxim | 77:529edb329ee0 | 908 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 909 | |
IanBenzMaxim | 74:23be10c32fa3 | 910 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 911 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 912 | |
IanBenzMaxim | 74:23be10c32fa3 | 913 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 914 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 915 | |
IanBenzMaxim | 74:23be10c32fa3 | 916 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 917 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 918 | |
IanBenzMaxim | 74:23be10c32fa3 | 919 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 920 | { |
IanBenzMaxim | 74:23be10c32fa3 | 921 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 922 | } |
IanBenzMaxim | 74:23be10c32fa3 | 923 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 924 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 925 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 926 | |
IanBenzMaxim | 74:23be10c32fa3 | 927 | 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 | 928 | { |
IanBenzMaxim | 74:23be10c32fa3 | 929 | ISha256MacCoproc::WriteMacData MT; |
IanBenzMaxim | 25:bdb1c5a53b58 | 930 | |
IanBenzMaxim | 74:23be10c32fa3 | 931 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 932 | std::memcpy(&MT[0], romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 933 | |
IanBenzMaxim | 74:23be10c32fa3 | 934 | MT[11] = segmentNum; |
IanBenzMaxim | 74:23be10c32fa3 | 935 | MT[10] = pageNum; |
IanBenzMaxim | 74:23be10c32fa3 | 936 | MT[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 937 | MT[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 938 | |
IanBenzMaxim | 74:23be10c32fa3 | 939 | // insert old data |
IanBenzMaxim | 74:23be10c32fa3 | 940 | std::memcpy(&MT[12], oldData, Segment::length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 941 | |
IanBenzMaxim | 74:23be10c32fa3 | 942 | // insert new data |
IanBenzMaxim | 74:23be10c32fa3 | 943 | std::memcpy(&MT[16], newData, Segment::length); |
IanBenzMaxim | 74:23be10c32fa3 | 944 | |
IanBenzMaxim | 74:23be10c32fa3 | 945 | return MacCoproc.computeWriteMac(MT, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 946 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 947 | |
IanBenzMaxim | 73:2cecc1372acc | 948 | 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 | 949 | { |
IanBenzMaxim | 74:23be10c32fa3 | 950 | ISha256MacCoproc::WriteMacData MT; |
IanBenzMaxim | 74:23be10c32fa3 | 951 | |
IanBenzMaxim | 74:23be10c32fa3 | 952 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 953 | std::memcpy(MT, romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 954 | |
IanBenzMaxim | 74:23be10c32fa3 | 955 | // instert block and page |
IanBenzMaxim | 74:23be10c32fa3 | 956 | MT[11] = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 957 | MT[10] = newProtection.blockNum(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 958 | |
IanBenzMaxim | 74:23be10c32fa3 | 959 | MT[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 960 | MT[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 961 | |
IanBenzMaxim | 74:23be10c32fa3 | 962 | // old data |
IanBenzMaxim | 74:23be10c32fa3 | 963 | MT[12] = oldProtection.authProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 964 | MT[13] = oldProtection.eepromEmulation() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 965 | MT[14] = oldProtection.writeProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 966 | MT[15] = oldProtection.readProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 967 | // new data |
IanBenzMaxim | 74:23be10c32fa3 | 968 | MT[16] = newProtection.authProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 969 | MT[17] = newProtection.eepromEmulation() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 970 | MT[18] = newProtection.writeProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 971 | MT[19] = newProtection.readProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 25:bdb1c5a53b58 | 972 | |
IanBenzMaxim | 74:23be10c32fa3 | 973 | // compute the mac |
IanBenzMaxim | 74:23be10c32fa3 | 974 | return MacCoproc.computeWriteMac(MT, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 975 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 976 | |
IanBenzMaxim | 73:2cecc1372acc | 977 | 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 | 978 | { |
IanBenzMaxim | 74:23be10c32fa3 | 979 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 980 | int cnt, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 981 | |
IanBenzMaxim | 74:23be10c32fa3 | 982 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 983 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 984 | |
IanBenzMaxim | 74:23be10c32fa3 | 985 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 986 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 987 | { |
IanBenzMaxim | 77:529edb329ee0 | 988 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 989 | { |
IanBenzMaxim | 77:529edb329ee0 | 990 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 991 | } |
IanBenzMaxim | 77:529edb329ee0 | 992 | |
IanBenzMaxim | 75:8b627804927c | 993 | buf[cnt++] = AuthWriteMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 994 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
IanBenzMaxim | 74:23be10c32fa3 | 995 | |
IanBenzMaxim | 74:23be10c32fa3 | 996 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 997 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 998 | |
IanBenzMaxim | 74:23be10c32fa3 | 999 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 1000 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1001 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1002 | |
IanBenzMaxim | 74:23be10c32fa3 | 1003 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 1004 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1005 | |
IanBenzMaxim | 74:23be10c32fa3 | 1006 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 1007 | for (size_t i = 0; i < newData.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 1008 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1009 | buf[cnt++] = newData[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 1010 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1011 | |
IanBenzMaxim | 74:23be10c32fa3 | 1012 | // Send data |
IanBenzMaxim | 77:529edb329ee0 | 1013 | master().OWWriteBlock(newData, newData.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1014 | |
IanBenzMaxim | 74:23be10c32fa3 | 1015 | // read first CRC byte |
IanBenzMaxim | 77:529edb329ee0 | 1016 | master().OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1017 | |
IanBenzMaxim | 74:23be10c32fa3 | 1018 | // read the last CRC and enable power |
IanBenzMaxim | 77:529edb329ee0 | 1019 | master().OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1020 | |
IanBenzMaxim | 74:23be10c32fa3 | 1021 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 1022 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1023 | |
IanBenzMaxim | 74:23be10c32fa3 | 1024 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 1025 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1026 | |
IanBenzMaxim | 74:23be10c32fa3 | 1027 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 1028 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1029 | { |
IanBenzMaxim | 75:8b627804927c | 1030 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1031 | { |
IanBenzMaxim | 77:529edb329ee0 | 1032 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 1033 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1034 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1035 | |
IanBenzMaxim | 74:23be10c32fa3 | 1036 | // check the second CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 1037 | unsigned short CRC16 = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1038 | |
IanBenzMaxim | 74:23be10c32fa3 | 1039 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
IanBenzMaxim | 75:8b627804927c | 1040 | if ((romId.familyCode() == DS28E25_Family) || (romId.familyCode() == DS28E22_Family)) |
IanBenzMaxim | 74:23be10c32fa3 | 1041 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1042 | if (continuing) |
IanBenzMaxim | 75:8b627804927c | 1043 | CRC16 = OneWireMaster::calculateCrc16(CRC16, 0xAA); |
IanBenzMaxim | 74:23be10c32fa3 | 1044 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1045 | |
IanBenzMaxim | 75:8b627804927c | 1046 | CRC16 = OneWireMaster::calculateCrc16(buf, offset, (cnt - offset), CRC16); |
IanBenzMaxim | 74:23be10c32fa3 | 1047 | |
IanBenzMaxim | 74:23be10c32fa3 | 1048 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1049 | { |
IanBenzMaxim | 77:529edb329ee0 | 1050 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 1051 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1052 | |
IanBenzMaxim | 25:bdb1c5a53b58 | 1053 | // compute the mac |
IanBenzMaxim | 74:23be10c32fa3 | 1054 | ISha256MacCoproc::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 1055 | Mac mac; |
IanBenzMaxim | 74:23be10c32fa3 | 1056 | result = computeSegmentWriteMac(MacCoproc, pageNum, segmentNum, newData, oldData, romId, manId, mac); |
IanBenzMaxim | 74:23be10c32fa3 | 1057 | if (result != ISha256MacCoproc::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 1058 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1059 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 1060 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1061 | |
IanBenzMaxim | 74:23be10c32fa3 | 1062 | // transmit MAC as a block |
IanBenzMaxim | 77:529edb329ee0 | 1063 | master().OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 74:23be10c32fa3 | 1064 | |
IanBenzMaxim | 74:23be10c32fa3 | 1065 | // calculate CRC on MAC |
IanBenzMaxim | 75:8b627804927c | 1066 | CRC16 = OneWireMaster::calculateCrc16(mac, 0, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1067 | |
IanBenzMaxim | 74:23be10c32fa3 | 1068 | // append read of CRC16 and CS byte |
IanBenzMaxim | 77:529edb329ee0 | 1069 | master().OWReadBlock(&buf[0], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 1070 | cnt = 3; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1071 | |
IanBenzMaxim | 74:23be10c32fa3 | 1072 | // ckeck CRC16 |
IanBenzMaxim | 75:8b627804927c | 1073 | CRC16 = OneWireMaster::calculateCrc16(buf, 0, (cnt - 1), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1074 | |
IanBenzMaxim | 74:23be10c32fa3 | 1075 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1076 | { |
IanBenzMaxim | 77:529edb329ee0 | 1077 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 1078 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1079 | |
IanBenzMaxim | 74:23be10c32fa3 | 1080 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 1081 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1082 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1083 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 1084 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1085 | |
IanBenzMaxim | 74:23be10c32fa3 | 1086 | // send release and strong pull-up |
IanBenzMaxim | 77:529edb329ee0 | 1087 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1088 | |
IanBenzMaxim | 74:23be10c32fa3 | 1089 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 1090 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1091 | |
IanBenzMaxim | 74:23be10c32fa3 | 1092 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 1093 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1094 | |
IanBenzMaxim | 74:23be10c32fa3 | 1095 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 1096 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1097 | |
IanBenzMaxim | 74:23be10c32fa3 | 1098 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1099 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1100 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 1101 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1102 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 1103 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1104 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1105 | |
IanBenzMaxim | 50:e967f9befbd0 | 1106 | OneWireSlave::CmdResult DS28E15_22_25::readSegment(unsigned int page, unsigned int segment, Segment & data, bool continuing) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 1107 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1108 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 1109 | uint8_t buf[2]; |
IanBenzMaxim | 74:23be10c32fa3 | 1110 | |
IanBenzMaxim | 74:23be10c32fa3 | 1111 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1112 | { |
IanBenzMaxim | 77:529edb329ee0 | 1113 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 1114 | { |
IanBenzMaxim | 77:529edb329ee0 | 1115 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 1116 | } |
IanBenzMaxim | 77:529edb329ee0 | 1117 | |
IanBenzMaxim | 75:8b627804927c | 1118 | buf[0] = ReadMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 1119 | buf[1] = (segment << 5) | page; |
IanBenzMaxim | 74:23be10c32fa3 | 1120 | |
IanBenzMaxim | 74:23be10c32fa3 | 1121 | // Transmit command |
IanBenzMaxim | 77:529edb329ee0 | 1122 | master().OWWriteBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1123 | |
IanBenzMaxim | 74:23be10c32fa3 | 1124 | // Receive CRC |
IanBenzMaxim | 77:529edb329ee0 | 1125 | result = master().OWReadBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1126 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1127 | else if (segment == 0) |
IanBenzMaxim | 74:23be10c32fa3 | 1128 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1129 | // Receive CRC from previous read |
IanBenzMaxim | 77:529edb329ee0 | 1130 | result = master().OWReadBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1131 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1132 | |
IanBenzMaxim | 74:23be10c32fa3 | 1133 | // Receive data |
IanBenzMaxim | 74:23be10c32fa3 | 1134 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 1135 | { |
IanBenzMaxim | 77:529edb329ee0 | 1136 | result = master().OWReadBlock(data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 1137 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1138 | |
IanBenzMaxim | 74:23be10c32fa3 | 1139 | return (result == OneWireMaster::Success ? OneWireSlave::Success : OneWireSlave::CommunicationError); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1140 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1141 | |
IanBenzMaxim | 74:23be10c32fa3 | 1142 | OneWireSlave::CmdResult DS28E15_22_25::writeSegment(unsigned int page, unsigned int block, const Segment & data, bool continuing) |
IanBenzMaxim | 25:bdb1c5a53b58 | 1143 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1144 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 1145 | int cnt, offset; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1146 | |
IanBenzMaxim | 74:23be10c32fa3 | 1147 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 1148 | offset = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 1149 | |
IanBenzMaxim | 74:23be10c32fa3 | 1150 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 1151 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1152 | { |
IanBenzMaxim | 77:529edb329ee0 | 1153 | if (selectDevice() != OneWireMaster::Success) |
IanBenzMaxim | 77:529edb329ee0 | 1154 | { |
IanBenzMaxim | 77:529edb329ee0 | 1155 | return CommunicationError; |
IanBenzMaxim | 77:529edb329ee0 | 1156 | } |
IanBenzMaxim | 77:529edb329ee0 | 1157 | |
IanBenzMaxim | 75:8b627804927c | 1158 | buf[cnt++] = WriteMemory; |
IanBenzMaxim | 74:23be10c32fa3 | 1159 | buf[cnt++] = (block << 5) | page; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 1160 | |
IanBenzMaxim | 74:23be10c32fa3 | 1161 | // Send command |
IanBenzMaxim | 77:529edb329ee0 | 1162 | master().OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1163 | |
IanBenzMaxim | 74:23be10c32fa3 | 1164 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 1165 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1166 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1167 | |
IanBenzMaxim | 74:23be10c32fa3 | 1168 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 1169 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1170 | |
IanBenzMaxim | 74:23be10c32fa3 | 1171 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 1172 | for (size_t i = 0; i < data.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 1173 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1174 | buf[cnt++] = data[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 1175 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1176 | |
IanBenzMaxim | 74:23be10c32fa3 | 1177 | // Send data |
IanBenzMaxim | 77:529edb329ee0 | 1178 | master().OWWriteBlock(data, data.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1179 | |
IanBenzMaxim | 74:23be10c32fa3 | 1180 | // Read CRC |
IanBenzMaxim | 77:529edb329ee0 | 1181 | master().OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1182 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1183 | |
IanBenzMaxim | 74:23be10c32fa3 | 1184 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 1185 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1186 | { |
IanBenzMaxim | 75:8b627804927c | 1187 | if (OneWireMaster::calculateCrc16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1188 | { |
IanBenzMaxim | 77:529edb329ee0 | 1189 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 1190 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1191 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1192 | |
IanBenzMaxim | 74:23be10c32fa3 | 1193 | // check the second CRC16 |
IanBenzMaxim | 75:8b627804927c | 1194 | if (OneWireMaster::calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1195 | { |
IanBenzMaxim | 77:529edb329ee0 | 1196 | return CrcError; |
IanBenzMaxim | 74:23be10c32fa3 | 1197 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1198 | |
IanBenzMaxim | 74:23be10c32fa3 | 1199 | // send release and strong pull-up |
IanBenzMaxim | 77:529edb329ee0 | 1200 | master().OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1201 | |
IanBenzMaxim | 74:23be10c32fa3 | 1202 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 1203 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 1204 | |
IanBenzMaxim | 74:23be10c32fa3 | 1205 | // disable strong pullup |
IanBenzMaxim | 77:529edb329ee0 | 1206 | master().OWSetLevel(OneWireMaster::NormalLevel); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1207 | |
IanBenzMaxim | 74:23be10c32fa3 | 1208 | // read the CS byte |
IanBenzMaxim | 77:529edb329ee0 | 1209 | master().OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1210 | |
IanBenzMaxim | 74:23be10c32fa3 | 1211 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1212 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1213 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 1214 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1215 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 1216 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1217 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1218 | |
IanBenzMaxim | 73:2cecc1372acc | 1219 | 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 | 1220 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1221 | ISha256MacCoproc::SlaveSecretData slaveSecretData; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1222 | |
IanBenzMaxim | 74:23be10c32fa3 | 1223 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 1224 | std::memcpy(slaveSecretData, romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1225 | |
IanBenzMaxim | 74:23be10c32fa3 | 1226 | slaveSecretData[11] = 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 1227 | slaveSecretData[10] = bindingPageNum; |
IanBenzMaxim | 74:23be10c32fa3 | 1228 | slaveSecretData[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 1229 | slaveSecretData[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1230 | |
IanBenzMaxim | 74:23be10c32fa3 | 1231 | return MacCoproc.computeSlaveSecret(ISha256MacCoproc::DevicePage(bindingPage), partialSecret, slaveSecretData); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1232 | } |