Maxim Integrated
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Superseded by MaximInterface.
Slaves/Authenticators/DS28E15_22_25/DS28E15_22_25.cpp@113:13e2865603df, 2016-08-09 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Tue Aug 09 12:35:22 2016 -0500
- Revision:
- 113:13e2865603df
- Parent:
- 104:3f48daed532b
- Child:
- 120:200109b73e3c
Begin splitting DS28E15_22_25 into separate classes.
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 | 113:13e2865603df | 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 | 113:13e2865603df | 56 | /// Number for memory pages for each device. |
| IanBenzMaxim | 113:13e2865603df | 57 | enum MemoryPages |
| IanBenzMaxim | 113:13e2865603df | 58 | { |
| IanBenzMaxim | 113:13e2865603df | 59 | DS28E25_Pages = 16, |
| IanBenzMaxim | 113:13e2865603df | 60 | DS28E22_Pages = 8, |
| IanBenzMaxim | 113:13e2865603df | 61 | DS28E15_Pages = 2 |
| IanBenzMaxim | 113:13e2865603df | 62 | }; |
| IanBenzMaxim | 113:13e2865603df | 63 | |
| IanBenzMaxim | 113:13e2865603df | 64 | /// Number of protection blocks for each device. |
| IanBenzMaxim | 113:13e2865603df | 65 | enum ProtectionBlocks |
| IanBenzMaxim | 113:13e2865603df | 66 | { |
| IanBenzMaxim | 113:13e2865603df | 67 | DS28E25_Blocks = 8, |
| IanBenzMaxim | 113:13e2865603df | 68 | DS28E22_Blocks = 4, |
| IanBenzMaxim | 113:13e2865603df | 69 | DS28E15_Blocks = 4 |
| IanBenzMaxim | 113:13e2865603df | 70 | }; |
| IanBenzMaxim | 113:13e2865603df | 71 | |
| IanBenzMaxim | 62:43039aeca2ab | 72 | DS28E15_22_25::Segment DS28E15_22_25::Page::toSegment(unsigned int segmentNum) const |
| IanBenzMaxim | 62:43039aeca2ab | 73 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 74 | if (segmentNum > (segmentsPerPage - 1)) |
| IanBenzMaxim | 74:23be10c32fa3 | 75 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 76 | segmentNum = (segmentsPerPage - 1); |
| IanBenzMaxim | 74:23be10c32fa3 | 77 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 78 | return Segment(*reinterpret_cast<const Segment::Buffer *>(&m_data[segmentNum * sizeof(Segment::Buffer)])); |
| IanBenzMaxim | 62:43039aeca2ab | 79 | } |
| IanBenzMaxim | 62:43039aeca2ab | 80 | |
| IanBenzMaxim | 62:43039aeca2ab | 81 | void DS28E15_22_25::Page::fromSegment(unsigned int segmentNum, const Segment & segment) |
| IanBenzMaxim | 62:43039aeca2ab | 82 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 83 | if (segmentNum > (segmentsPerPage - 1)) |
| IanBenzMaxim | 74:23be10c32fa3 | 84 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 85 | segmentNum = (segmentsPerPage - 1); |
| IanBenzMaxim | 74:23be10c32fa3 | 86 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 87 | std::memcpy(&m_data[segmentNum * sizeof(Segment::Buffer)], &static_cast<const Segment::Buffer &>(segment), Segment::length); |
| IanBenzMaxim | 62:43039aeca2ab | 88 | } |
| IanBenzMaxim | 62:43039aeca2ab | 89 | |
| IanBenzMaxim | 73:2cecc1372acc | 90 | DS28E15_22_25::BlockProtection::BlockProtection(bool readProtection, bool writeProtection, bool eepromEmulation, bool authProtection, uint8_t blockNum) |
| IanBenzMaxim | 34:11fffbe98ef9 | 91 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 92 | setReadProtection(readProtection); |
| IanBenzMaxim | 74:23be10c32fa3 | 93 | setWriteProtection(writeProtection); |
| IanBenzMaxim | 74:23be10c32fa3 | 94 | setEepromEmulation(eepromEmulation); |
| IanBenzMaxim | 74:23be10c32fa3 | 95 | setAuthProtection(authProtection); |
| IanBenzMaxim | 74:23be10c32fa3 | 96 | setBlockNum(blockNum); |
| IanBenzMaxim | 34:11fffbe98ef9 | 97 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 98 | |
| IanBenzMaxim | 73:2cecc1372acc | 99 | void DS28E15_22_25::BlockProtection::setBlockNum(uint8_t blockNum) |
| IanBenzMaxim | 34:11fffbe98ef9 | 100 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 101 | m_status &= ~blockNumMask; |
| IanBenzMaxim | 74:23be10c32fa3 | 102 | m_status |= (blockNum & blockNumMask); |
| IanBenzMaxim | 34:11fffbe98ef9 | 103 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 104 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 105 | bool DS28E15_22_25::BlockProtection::noProtection() const |
| IanBenzMaxim | 34:11fffbe98ef9 | 106 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 107 | return !readProtection() && !writeProtection() && !eepromEmulation() && !authProtection(); |
| IanBenzMaxim | 34:11fffbe98ef9 | 108 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 109 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 110 | void DS28E15_22_25::BlockProtection::setReadProtection(bool readProtection) |
| IanBenzMaxim | 34:11fffbe98ef9 | 111 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 112 | if (readProtection) |
| IanBenzMaxim | 74:23be10c32fa3 | 113 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 114 | m_status |= readProtectionMask; |
| IanBenzMaxim | 74:23be10c32fa3 | 115 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 116 | else |
| IanBenzMaxim | 74:23be10c32fa3 | 117 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 118 | m_status &= ~readProtectionMask; |
| IanBenzMaxim | 74:23be10c32fa3 | 119 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 120 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 121 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 122 | void DS28E15_22_25::BlockProtection::setWriteProtection(bool writeProtection) |
| IanBenzMaxim | 34:11fffbe98ef9 | 123 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 124 | if (writeProtection) |
| IanBenzMaxim | 74:23be10c32fa3 | 125 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 126 | m_status |= writeProtectionMask; |
| IanBenzMaxim | 74:23be10c32fa3 | 127 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 128 | else |
| IanBenzMaxim | 74:23be10c32fa3 | 129 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 130 | m_status &= ~writeProtectionMask; |
| IanBenzMaxim | 74:23be10c32fa3 | 131 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 132 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 133 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 134 | void DS28E15_22_25::BlockProtection::setEepromEmulation(bool eepromEmulation) |
| IanBenzMaxim | 34:11fffbe98ef9 | 135 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 136 | if (eepromEmulation) |
| IanBenzMaxim | 74:23be10c32fa3 | 137 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 138 | m_status |= eepromEmulationMask; |
| IanBenzMaxim | 74:23be10c32fa3 | 139 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 140 | else |
| IanBenzMaxim | 74:23be10c32fa3 | 141 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 142 | m_status &= ~eepromEmulationMask; |
| IanBenzMaxim | 74:23be10c32fa3 | 143 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 144 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 145 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 146 | void DS28E15_22_25::BlockProtection::setAuthProtection(bool authProtection) |
| IanBenzMaxim | 34:11fffbe98ef9 | 147 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 148 | if (authProtection) |
| IanBenzMaxim | 74:23be10c32fa3 | 149 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 150 | m_status |= authProtectionMask; |
| IanBenzMaxim | 74:23be10c32fa3 | 151 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 152 | else |
| IanBenzMaxim | 74:23be10c32fa3 | 153 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 154 | m_status &= ~authProtectionMask; |
| IanBenzMaxim | 74:23be10c32fa3 | 155 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 156 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 157 | |
| IanBenzMaxim | 113:13e2865603df | 158 | DS28E15_22_25::DS28E15_22_25(RandomAccessRomIterator & selector, bool lowVoltage, FamilyCode variant) |
| IanBenzMaxim | 113:13e2865603df | 159 | : OneWireSlave(selector), m_lowVoltage(lowVoltage), m_variant(variant) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 160 | { |
| IanBenzMaxim | 82:c11090a32471 | 161 | std::memset(m_manId, 0x00, m_manId.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 162 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 163 | |
| IanBenzMaxim | 74:23be10c32fa3 | 164 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthBlockProtection(const ISha256MacCoproc & MacCoproc, const BlockProtection & newProtection, const BlockProtection & oldProtection) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 165 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 166 | uint8_t buf[256], cs; |
| IanBenzMaxim | 74:23be10c32fa3 | 167 | int cnt = 0; |
| IanBenzMaxim | 74:23be10c32fa3 | 168 | Mac mac; |
| IanBenzMaxim | 77:529edb329ee0 | 169 | |
| IanBenzMaxim | 77:529edb329ee0 | 170 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 171 | { |
| IanBenzMaxim | 77:529edb329ee0 | 172 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 173 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 174 | |
| IanBenzMaxim | 75:8b627804927c | 175 | buf[cnt++] = AuthWriteBlockProtection; |
| IanBenzMaxim | 74:23be10c32fa3 | 176 | buf[cnt++] = newProtection.statusByte(); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 177 | |
| IanBenzMaxim | 74:23be10c32fa3 | 178 | // Send command |
| IanBenzMaxim | 77:529edb329ee0 | 179 | master().OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 180 | |
| IanBenzMaxim | 74:23be10c32fa3 | 181 | // read first CRC byte |
| IanBenzMaxim | 77:529edb329ee0 | 182 | master().OWReadByte(buf[cnt++]); |
| IanBenzMaxim | 74:23be10c32fa3 | 183 | |
| IanBenzMaxim | 74:23be10c32fa3 | 184 | // read the last CRC and enable |
| IanBenzMaxim | 77:529edb329ee0 | 185 | master().OWReadBytePower(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 186 | |
| IanBenzMaxim | 74:23be10c32fa3 | 187 | // now wait for the MAC computation. |
| IanBenzMaxim | 74:23be10c32fa3 | 188 | wait_ms(shaComputationDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 189 | |
| IanBenzMaxim | 74:23be10c32fa3 | 190 | // disable strong pullup |
| IanBenzMaxim | 77:529edb329ee0 | 191 | master().OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 192 | |
| IanBenzMaxim | 74:23be10c32fa3 | 193 | // check CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 194 | if (calculateCrc16(buf, 0, cnt) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 195 | { |
| IanBenzMaxim | 77:529edb329ee0 | 196 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 197 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 198 | |
| IanBenzMaxim | 74:23be10c32fa3 | 199 | ISha256MacCoproc::CmdResult result; |
| IanBenzMaxim | 82:c11090a32471 | 200 | result = computeProtectionWriteMac(MacCoproc, newProtection, oldProtection, romId(), manId(), mac); |
| IanBenzMaxim | 74:23be10c32fa3 | 201 | if (result != ISha256MacCoproc::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 202 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 203 | return OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 204 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 205 | cnt = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 206 | |
| IanBenzMaxim | 74:23be10c32fa3 | 207 | // send the MAC |
| IanBenzMaxim | 77:529edb329ee0 | 208 | master().OWWriteBlock(mac, mac.length); |
| IanBenzMaxim | 74:23be10c32fa3 | 209 | |
| IanBenzMaxim | 74:23be10c32fa3 | 210 | // Read CRC and CS byte |
| IanBenzMaxim | 77:529edb329ee0 | 211 | master().OWReadBlock(&buf[cnt], 3); |
| IanBenzMaxim | 74:23be10c32fa3 | 212 | cnt += 3; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 213 | |
| IanBenzMaxim | 74:23be10c32fa3 | 214 | // check CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 215 | if (calculateCrc16(buf, 0, (cnt - 1), calculateCrc16(mac, 0, mac.length)) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 216 | { |
| IanBenzMaxim | 77:529edb329ee0 | 217 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 218 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 219 | |
| IanBenzMaxim | 74:23be10c32fa3 | 220 | // check CS |
| IanBenzMaxim | 74:23be10c32fa3 | 221 | if (buf[cnt - 1] != 0xAA) |
| IanBenzMaxim | 74:23be10c32fa3 | 222 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 223 | return OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 224 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 225 | |
| IanBenzMaxim | 74:23be10c32fa3 | 226 | // send release and strong pull-up |
| IanBenzMaxim | 74:23be10c32fa3 | 227 | // DATASHEET_CORRECTION - last bit in release is a read-zero so don't check echo of write byte |
| IanBenzMaxim | 77:529edb329ee0 | 228 | master().OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 229 | |
| IanBenzMaxim | 74:23be10c32fa3 | 230 | // now wait for the programming. |
| IanBenzMaxim | 74:23be10c32fa3 | 231 | wait_ms(eepromWriteDelayMs); |
| IanBenzMaxim | 74:23be10c32fa3 | 232 | |
| IanBenzMaxim | 74:23be10c32fa3 | 233 | // disable strong pullup |
| IanBenzMaxim | 77:529edb329ee0 | 234 | master().OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 235 | |
| IanBenzMaxim | 74:23be10c32fa3 | 236 | // read the CS byte |
| IanBenzMaxim | 77:529edb329ee0 | 237 | master().OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 238 | |
| IanBenzMaxim | 74:23be10c32fa3 | 239 | if (cs == 0xAA) |
| IanBenzMaxim | 74:23be10c32fa3 | 240 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 241 | return Success; |
| IanBenzMaxim | 74:23be10c32fa3 | 242 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 243 | // else |
| IanBenzMaxim | 74:23be10c32fa3 | 244 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 245 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 246 | |
| IanBenzMaxim | 74:23be10c32fa3 | 247 | OneWireSlave::CmdResult DS28E15_22_25::writeBlockProtection(const BlockProtection & protection) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 248 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 249 | uint8_t buf[256], cs; |
| IanBenzMaxim | 74:23be10c32fa3 | 250 | int cnt = 0; |
| IanBenzMaxim | 77:529edb329ee0 | 251 | |
| IanBenzMaxim | 77:529edb329ee0 | 252 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 253 | { |
| IanBenzMaxim | 77:529edb329ee0 | 254 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 255 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 256 | |
| IanBenzMaxim | 75:8b627804927c | 257 | buf[cnt++] = WriteBlockProtection; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 258 | |
| IanBenzMaxim | 74:23be10c32fa3 | 259 | // compute parameter byte |
| IanBenzMaxim | 74:23be10c32fa3 | 260 | buf[cnt++] = protection.statusByte(); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 261 | |
| IanBenzMaxim | 77:529edb329ee0 | 262 | master().OWWriteBlock(&buf[0], cnt); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 263 | |
| IanBenzMaxim | 74:23be10c32fa3 | 264 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 265 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 266 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 267 | |
| IanBenzMaxim | 74:23be10c32fa3 | 268 | // check CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 269 | if (calculateCrc16(buf, 0, cnt) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 270 | { |
| IanBenzMaxim | 77:529edb329ee0 | 271 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 272 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 273 | |
| IanBenzMaxim | 74:23be10c32fa3 | 274 | // sent release |
| IanBenzMaxim | 77:529edb329ee0 | 275 | master().OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 276 | |
| IanBenzMaxim | 74:23be10c32fa3 | 277 | // now wait for the programming. |
| IanBenzMaxim | 74:23be10c32fa3 | 278 | wait_ms(eepromWriteDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 279 | |
| IanBenzMaxim | 74:23be10c32fa3 | 280 | // disable strong pullup |
| IanBenzMaxim | 77:529edb329ee0 | 281 | master().OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 74:23be10c32fa3 | 282 | |
| IanBenzMaxim | 74:23be10c32fa3 | 283 | // read the CS byte |
| IanBenzMaxim | 77:529edb329ee0 | 284 | master().OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 285 | |
| IanBenzMaxim | 74:23be10c32fa3 | 286 | if (cs == 0xAA) |
| IanBenzMaxim | 74:23be10c32fa3 | 287 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 288 | return Success; |
| IanBenzMaxim | 74:23be10c32fa3 | 289 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 290 | // else |
| IanBenzMaxim | 74:23be10c32fa3 | 291 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 292 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 293 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 294 | OneWireSlave::CmdResult DS28E15_22_25::readBlockProtection(unsigned int blockNum, BlockProtection & protection) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 295 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 296 | uint8_t buf; |
| IanBenzMaxim | 77:529edb329ee0 | 297 | CmdResult result; |
| IanBenzMaxim | 77:529edb329ee0 | 298 | |
| IanBenzMaxim | 77:529edb329ee0 | 299 | result = readStatus(false, false, blockNum, &buf); |
| IanBenzMaxim | 74:23be10c32fa3 | 300 | if (result == Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 301 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 302 | protection.setStatusByte(buf); |
| IanBenzMaxim | 74:23be10c32fa3 | 303 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 304 | return result; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 305 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 306 | |
| IanBenzMaxim | 51:a65f031e997b | 307 | OneWireSlave::CmdResult DS28E15_22_25::readPersonality(Personality & personality) const |
| IanBenzMaxim | 50:e967f9befbd0 | 308 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 309 | return readStatus(true, false, 0, personality.bytes); |
| IanBenzMaxim | 50:e967f9befbd0 | 310 | } |
| IanBenzMaxim | 50:e967f9befbd0 | 311 | |
| IanBenzMaxim | 73:2cecc1372acc | 312 | OneWireSlave::CmdResult DS28E15_22_25::readStatus(bool personality, bool allpages, unsigned int blockNum, uint8_t * rdbuf) const |
| IanBenzMaxim | 50:e967f9befbd0 | 313 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 314 | const size_t crcLen = 4, ds28e22_25_pagesPerBlock = 2; |
| IanBenzMaxim | 74:23be10c32fa3 | 315 | |
| IanBenzMaxim | 74:23be10c32fa3 | 316 | uint8_t buf[256]; |
| IanBenzMaxim | 74:23be10c32fa3 | 317 | size_t cnt = 0, offset = 0; |
| IanBenzMaxim | 77:529edb329ee0 | 318 | |
| IanBenzMaxim | 77:529edb329ee0 | 319 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 320 | { |
| IanBenzMaxim | 77:529edb329ee0 | 321 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 322 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 323 | |
| IanBenzMaxim | 75:8b627804927c | 324 | buf[cnt++] = ReadStatus; |
| IanBenzMaxim | 74:23be10c32fa3 | 325 | if (personality) |
| IanBenzMaxim | 74:23be10c32fa3 | 326 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 327 | buf[cnt++] = 0xE0; |
| IanBenzMaxim | 74:23be10c32fa3 | 328 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 329 | else if (allpages) |
| IanBenzMaxim | 74:23be10c32fa3 | 330 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 331 | buf[cnt++] = 0; |
| IanBenzMaxim | 74:23be10c32fa3 | 332 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 333 | else |
| IanBenzMaxim | 74:23be10c32fa3 | 334 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 335 | // Convert to page number for DS28E22 and DS28E25 |
| IanBenzMaxim | 74:23be10c32fa3 | 336 | buf[cnt] = blockNum; |
| IanBenzMaxim | 113:13e2865603df | 337 | if ((m_variant == DS28E25_Family) || (m_variant == DS28E22_Family)) |
| IanBenzMaxim | 74:23be10c32fa3 | 338 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 339 | buf[cnt] *= ds28e22_25_pagesPerBlock; |
| IanBenzMaxim | 74:23be10c32fa3 | 340 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 341 | cnt++; |
| IanBenzMaxim | 74:23be10c32fa3 | 342 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 343 | |
| IanBenzMaxim | 74:23be10c32fa3 | 344 | // send the command |
| IanBenzMaxim | 77:529edb329ee0 | 345 | master().OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 50:e967f9befbd0 | 346 | |
| IanBenzMaxim | 74:23be10c32fa3 | 347 | offset = cnt + 2; |
| IanBenzMaxim | 50:e967f9befbd0 | 348 | |
| IanBenzMaxim | 74:23be10c32fa3 | 349 | // Set data length |
| IanBenzMaxim | 74:23be10c32fa3 | 350 | size_t rdnum; |
| IanBenzMaxim | 74:23be10c32fa3 | 351 | if (personality) |
| IanBenzMaxim | 74:23be10c32fa3 | 352 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 353 | rdnum = 4; |
| IanBenzMaxim | 74:23be10c32fa3 | 354 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 355 | else if (!allpages) |
| IanBenzMaxim | 74:23be10c32fa3 | 356 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 357 | rdnum = 1; |
| IanBenzMaxim | 74:23be10c32fa3 | 358 | } |
| IanBenzMaxim | 113:13e2865603df | 359 | else if ((m_variant == DS28E22_Family) || (m_variant == DS28E25_Family)) |
| IanBenzMaxim | 74:23be10c32fa3 | 360 | { |
| IanBenzMaxim | 75:8b627804927c | 361 | rdnum = DS28E25_Pages; // Need to read extra data on DS28E22 to get CRC16. |
| IanBenzMaxim | 74:23be10c32fa3 | 362 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 363 | else // DS28E15 |
| IanBenzMaxim | 74:23be10c32fa3 | 364 | { |
| IanBenzMaxim | 75:8b627804927c | 365 | rdnum = DS28E15_Blocks; |
| IanBenzMaxim | 74:23be10c32fa3 | 366 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 367 | rdnum += crcLen; // Add in CRC length |
| IanBenzMaxim | 50:e967f9befbd0 | 368 | |
| IanBenzMaxim | 74:23be10c32fa3 | 369 | // Read the bytes |
| IanBenzMaxim | 77:529edb329ee0 | 370 | master().OWReadBlock(&buf[cnt], rdnum); |
| IanBenzMaxim | 74:23be10c32fa3 | 371 | cnt += rdnum; |
| IanBenzMaxim | 50:e967f9befbd0 | 372 | |
| IanBenzMaxim | 74:23be10c32fa3 | 373 | // check the first CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 374 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 375 | { |
| IanBenzMaxim | 77:529edb329ee0 | 376 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 377 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 378 | |
| IanBenzMaxim | 74:23be10c32fa3 | 379 | if (personality || allpages) |
| IanBenzMaxim | 74:23be10c32fa3 | 380 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 381 | // check the second CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 382 | if (calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 383 | { |
| IanBenzMaxim | 77:529edb329ee0 | 384 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 385 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 386 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 387 | |
| IanBenzMaxim | 74:23be10c32fa3 | 388 | // copy the data to the read buffer |
| IanBenzMaxim | 74:23be10c32fa3 | 389 | rdnum -= crcLen; |
| IanBenzMaxim | 113:13e2865603df | 390 | if (allpages && ((m_variant == DS28E25_Family) || (m_variant == DS28E22_Family))) |
| IanBenzMaxim | 50:e967f9befbd0 | 391 | { |
| IanBenzMaxim | 113:13e2865603df | 392 | if (m_variant == DS28E22_Family) |
| IanBenzMaxim | 74:23be10c32fa3 | 393 | { |
| IanBenzMaxim | 75:8b627804927c | 394 | rdnum -= (DS28E25_Pages - DS28E22_Pages); |
| IanBenzMaxim | 74:23be10c32fa3 | 395 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 396 | |
| IanBenzMaxim | 74:23be10c32fa3 | 397 | for (size_t i = 0; i < (rdnum / ds28e22_25_pagesPerBlock); i++) |
| IanBenzMaxim | 74:23be10c32fa3 | 398 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 399 | rdbuf[i] = (buf[offset + (i * ds28e22_25_pagesPerBlock)] & 0xF0); // Upper nibble |
| IanBenzMaxim | 74:23be10c32fa3 | 400 | rdbuf[i] |= ((buf[offset + (i * ds28e22_25_pagesPerBlock)] & 0x0F) / ds28e22_25_pagesPerBlock); // Lower nibble |
| IanBenzMaxim | 74:23be10c32fa3 | 401 | } |
| IanBenzMaxim | 50:e967f9befbd0 | 402 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 403 | else |
| IanBenzMaxim | 74:23be10c32fa3 | 404 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 405 | std::memcpy(rdbuf, &buf[offset], rdnum); |
| IanBenzMaxim | 74:23be10c32fa3 | 406 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 407 | |
| IanBenzMaxim | 74:23be10c32fa3 | 408 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 409 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 410 | |
| IanBenzMaxim | 73:2cecc1372acc | 411 | 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 | 412 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 413 | ISha256MacCoproc::AuthMacData authMacData; |
| IanBenzMaxim | 49:36954b62f503 | 414 | |
| IanBenzMaxim | 74:23be10c32fa3 | 415 | // insert ROM number or FF |
| IanBenzMaxim | 74:23be10c32fa3 | 416 | std::memcpy(authMacData, romId, RomId::byteLen); |
| IanBenzMaxim | 49:36954b62f503 | 417 | |
| IanBenzMaxim | 74:23be10c32fa3 | 418 | authMacData[10] = pageNum; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 419 | |
| IanBenzMaxim | 74:23be10c32fa3 | 420 | authMacData[9] = manId[0]; |
| IanBenzMaxim | 74:23be10c32fa3 | 421 | authMacData[8] = manId[1]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 422 | |
| IanBenzMaxim | 74:23be10c32fa3 | 423 | authMacData[11] = 0x00; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 424 | |
| IanBenzMaxim | 74:23be10c32fa3 | 425 | return MacCoproc.computeAuthMac(ISha256MacCoproc::DevicePage(pageData), challenge, authMacData, mac); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 426 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 427 | |
| IanBenzMaxim | 73:2cecc1372acc | 428 | 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 | 429 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 430 | RomId romId; |
| IanBenzMaxim | 74:23be10c32fa3 | 431 | std::memset(romId, 0xFF, RomId::byteLen); |
| IanBenzMaxim | 74:23be10c32fa3 | 432 | return computeAuthMac(MacCoproc, pageData, pageNum, challenge, romId, manId, mac); |
| IanBenzMaxim | 49:36954b62f503 | 433 | } |
| IanBenzMaxim | 49:36954b62f503 | 434 | |
| IanBenzMaxim | 74:23be10c32fa3 | 435 | OneWireSlave::CmdResult DS28E15_22_25::computeReadPageMac(unsigned int page_num, bool anon, Mac & mac) const |
| IanBenzMaxim | 25:bdb1c5a53b58 | 436 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 437 | uint8_t buf[256], cs; |
| IanBenzMaxim | 74:23be10c32fa3 | 438 | int cnt = 0; |
| IanBenzMaxim | 77:529edb329ee0 | 439 | |
| IanBenzMaxim | 77:529edb329ee0 | 440 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 441 | { |
| IanBenzMaxim | 77:529edb329ee0 | 442 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 443 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 444 | |
| IanBenzMaxim | 75:8b627804927c | 445 | buf[cnt++] = ComputePageMac; |
| IanBenzMaxim | 74:23be10c32fa3 | 446 | buf[cnt++] = ((anon) ? 0xE0 : 0x00) | page_num; |
| IanBenzMaxim | 74:23be10c32fa3 | 447 | |
| IanBenzMaxim | 74:23be10c32fa3 | 448 | // Send command |
| IanBenzMaxim | 77:529edb329ee0 | 449 | master().OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 450 | |
| IanBenzMaxim | 74:23be10c32fa3 | 451 | // read first CRC byte |
| IanBenzMaxim | 77:529edb329ee0 | 452 | master().OWReadByte(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 453 | |
| IanBenzMaxim | 74:23be10c32fa3 | 454 | // read the last CRC and enable |
| IanBenzMaxim | 77:529edb329ee0 | 455 | master().OWReadBytePower(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 456 | |
| IanBenzMaxim | 74:23be10c32fa3 | 457 | // now wait for the MAC computation. |
| IanBenzMaxim | 74:23be10c32fa3 | 458 | wait_ms(shaComputationDelayMs * 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 459 | |
| IanBenzMaxim | 74:23be10c32fa3 | 460 | // disable strong pullup |
| IanBenzMaxim | 77:529edb329ee0 | 461 | master().OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 462 | |
| IanBenzMaxim | 74:23be10c32fa3 | 463 | // check CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 464 | if (calculateCrc16(buf, 0, cnt) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 465 | { |
| IanBenzMaxim | 77:529edb329ee0 | 466 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 467 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 468 | |
| IanBenzMaxim | 74:23be10c32fa3 | 469 | // read the CS byte |
| IanBenzMaxim | 77:529edb329ee0 | 470 | master().OWReadByte(cs); |
| IanBenzMaxim | 74:23be10c32fa3 | 471 | if (cs != 0xAA) |
| IanBenzMaxim | 74:23be10c32fa3 | 472 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 473 | return OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 474 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 475 | |
| IanBenzMaxim | 74:23be10c32fa3 | 476 | // read the MAC and CRC |
| IanBenzMaxim | 77:529edb329ee0 | 477 | master().OWReadBlock(&buf[0], (Mac::length + 2)); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 478 | |
| IanBenzMaxim | 74:23be10c32fa3 | 479 | // check CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 480 | if (calculateCrc16(buf, 0, (Mac::length + 2)) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 481 | { |
| IanBenzMaxim | 77:529edb329ee0 | 482 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 483 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 484 | |
| IanBenzMaxim | 74:23be10c32fa3 | 485 | // copy MAC to return buffer |
| IanBenzMaxim | 74:23be10c32fa3 | 486 | std::memcpy(mac, buf, Mac::length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 487 | |
| IanBenzMaxim | 74:23be10c32fa3 | 488 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 489 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 490 | |
| IanBenzMaxim | 74:23be10c32fa3 | 491 | OneWireSlave::CmdResult DS28E15_22_25::computeSecret(unsigned int page_num, bool lock) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 492 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 493 | uint8_t buf[256], cs; |
| IanBenzMaxim | 74:23be10c32fa3 | 494 | int cnt = 0; |
| IanBenzMaxim | 77:529edb329ee0 | 495 | |
| IanBenzMaxim | 77:529edb329ee0 | 496 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 497 | { |
| IanBenzMaxim | 77:529edb329ee0 | 498 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 499 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 500 | |
| IanBenzMaxim | 75:8b627804927c | 501 | buf[cnt++] = ComputeAndLockSecret; |
| IanBenzMaxim | 74:23be10c32fa3 | 502 | buf[cnt++] = (lock) ? (0xE0 | page_num) : page_num; // lock flag |
| IanBenzMaxim | 25:bdb1c5a53b58 | 503 | |
| IanBenzMaxim | 74:23be10c32fa3 | 504 | // Send command |
| IanBenzMaxim | 77:529edb329ee0 | 505 | master().OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 506 | |
| IanBenzMaxim | 74:23be10c32fa3 | 507 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 508 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 509 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 510 | |
| IanBenzMaxim | 74:23be10c32fa3 | 511 | // check CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 512 | if (calculateCrc16(buf, 0, cnt) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 513 | { |
| IanBenzMaxim | 77:529edb329ee0 | 514 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 515 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 516 | |
| IanBenzMaxim | 74:23be10c32fa3 | 517 | // send release and strong pull-up |
| IanBenzMaxim | 77:529edb329ee0 | 518 | master().OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 519 | |
| IanBenzMaxim | 74:23be10c32fa3 | 520 | // now wait for the MAC computations and secret programming. |
| IanBenzMaxim | 74:23be10c32fa3 | 521 | wait_ms(shaComputationDelayMs * 2 + secretEepromWriteDelayMs()); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 522 | |
| IanBenzMaxim | 74:23be10c32fa3 | 523 | // disable strong pullup |
| IanBenzMaxim | 77:529edb329ee0 | 524 | master().OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 74:23be10c32fa3 | 525 | |
| IanBenzMaxim | 74:23be10c32fa3 | 526 | // read the CS byte |
| IanBenzMaxim | 77:529edb329ee0 | 527 | master().OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 528 | |
| IanBenzMaxim | 74:23be10c32fa3 | 529 | if (cs == 0xAA) |
| IanBenzMaxim | 74:23be10c32fa3 | 530 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 531 | return Success; |
| IanBenzMaxim | 74:23be10c32fa3 | 532 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 533 | // else |
| IanBenzMaxim | 74:23be10c32fa3 | 534 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 535 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 536 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 537 | OneWireSlave::CmdResult DS28E15_22_25::writeScratchpad(const Scratchpad & data) const |
| IanBenzMaxim | 25:bdb1c5a53b58 | 538 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 539 | uint8_t buf[256]; |
| IanBenzMaxim | 74:23be10c32fa3 | 540 | int cnt = 0, offset; |
| IanBenzMaxim | 77:529edb329ee0 | 541 | |
| IanBenzMaxim | 77:529edb329ee0 | 542 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 543 | { |
| IanBenzMaxim | 77:529edb329ee0 | 544 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 545 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 546 | |
| IanBenzMaxim | 75:8b627804927c | 547 | buf[cnt++] = ReadWriteScratchpad; |
| IanBenzMaxim | 113:13e2865603df | 548 | if ((m_variant == DS28E25_Family) || (m_variant == DS28E22_Family)) |
| IanBenzMaxim | 74:23be10c32fa3 | 549 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 550 | buf[cnt++] = 0x20; |
| IanBenzMaxim | 74:23be10c32fa3 | 551 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 552 | else |
| IanBenzMaxim | 74:23be10c32fa3 | 553 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 554 | buf[cnt++] = 0x00; |
| IanBenzMaxim | 74:23be10c32fa3 | 555 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 556 | |
| IanBenzMaxim | 74:23be10c32fa3 | 557 | // Send command |
| IanBenzMaxim | 77:529edb329ee0 | 558 | master().OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 559 | |
| IanBenzMaxim | 74:23be10c32fa3 | 560 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 561 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 562 | cnt += 2; |
| IanBenzMaxim | 74:23be10c32fa3 | 563 | |
| IanBenzMaxim | 74:23be10c32fa3 | 564 | offset = cnt; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 565 | |
| IanBenzMaxim | 74:23be10c32fa3 | 566 | // add the data |
| IanBenzMaxim | 74:23be10c32fa3 | 567 | std::memcpy(&buf[cnt], data, data.length); |
| IanBenzMaxim | 74:23be10c32fa3 | 568 | cnt += data.length; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 569 | |
| IanBenzMaxim | 74:23be10c32fa3 | 570 | // Send the data |
| IanBenzMaxim | 77:529edb329ee0 | 571 | master().OWWriteBlock(data, data.length); |
| IanBenzMaxim | 74:23be10c32fa3 | 572 | |
| IanBenzMaxim | 74:23be10c32fa3 | 573 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 574 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 575 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 576 | |
| IanBenzMaxim | 74:23be10c32fa3 | 577 | // check first CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 578 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 579 | { |
| IanBenzMaxim | 77:529edb329ee0 | 580 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 581 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 582 | |
| IanBenzMaxim | 74:23be10c32fa3 | 583 | // check the second CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 584 | if (calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 585 | { |
| IanBenzMaxim | 77:529edb329ee0 | 586 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 587 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 588 | |
| IanBenzMaxim | 74:23be10c32fa3 | 589 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 590 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 591 | |
| IanBenzMaxim | 49:36954b62f503 | 592 | OneWireSlave::CmdResult DS28E15_22_25::readScratchpad(Scratchpad & data) const |
| IanBenzMaxim | 49:36954b62f503 | 593 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 594 | uint8_t buf[256]; |
| IanBenzMaxim | 74:23be10c32fa3 | 595 | int cnt = 0, offset; |
| IanBenzMaxim | 77:529edb329ee0 | 596 | |
| IanBenzMaxim | 77:529edb329ee0 | 597 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 598 | { |
| IanBenzMaxim | 77:529edb329ee0 | 599 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 600 | } |
| IanBenzMaxim | 49:36954b62f503 | 601 | |
| IanBenzMaxim | 75:8b627804927c | 602 | buf[cnt++] = ReadWriteScratchpad; |
| IanBenzMaxim | 113:13e2865603df | 603 | if ((m_variant == DS28E25_Family) || (m_variant == DS28E22_Family)) |
| IanBenzMaxim | 74:23be10c32fa3 | 604 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 605 | buf[cnt++] = 0x2F; |
| IanBenzMaxim | 74:23be10c32fa3 | 606 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 607 | else |
| IanBenzMaxim | 74:23be10c32fa3 | 608 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 609 | buf[cnt++] = 0x0F; |
| IanBenzMaxim | 74:23be10c32fa3 | 610 | } |
| IanBenzMaxim | 49:36954b62f503 | 611 | |
| IanBenzMaxim | 74:23be10c32fa3 | 612 | // Send command |
| IanBenzMaxim | 77:529edb329ee0 | 613 | master().OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 49:36954b62f503 | 614 | |
| IanBenzMaxim | 74:23be10c32fa3 | 615 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 616 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 617 | cnt += 2; |
| IanBenzMaxim | 74:23be10c32fa3 | 618 | |
| IanBenzMaxim | 74:23be10c32fa3 | 619 | offset = cnt; |
| IanBenzMaxim | 49:36954b62f503 | 620 | |
| IanBenzMaxim | 74:23be10c32fa3 | 621 | // Receive the data |
| IanBenzMaxim | 77:529edb329ee0 | 622 | master().OWReadBlock(&buf[cnt], data.length); |
| IanBenzMaxim | 74:23be10c32fa3 | 623 | cnt += data.length; |
| IanBenzMaxim | 74:23be10c32fa3 | 624 | |
| IanBenzMaxim | 74:23be10c32fa3 | 625 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 626 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 627 | cnt += 2; |
| IanBenzMaxim | 49:36954b62f503 | 628 | |
| IanBenzMaxim | 74:23be10c32fa3 | 629 | // check first CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 630 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 631 | { |
| IanBenzMaxim | 77:529edb329ee0 | 632 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 633 | } |
| IanBenzMaxim | 49:36954b62f503 | 634 | |
| IanBenzMaxim | 74:23be10c32fa3 | 635 | // check the second CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 636 | if (calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 637 | { |
| IanBenzMaxim | 77:529edb329ee0 | 638 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 639 | } |
| IanBenzMaxim | 49:36954b62f503 | 640 | |
| IanBenzMaxim | 74:23be10c32fa3 | 641 | // Copy to output |
| IanBenzMaxim | 74:23be10c32fa3 | 642 | std::memcpy(data, &buf[offset], data.length); |
| IanBenzMaxim | 74:23be10c32fa3 | 643 | |
| IanBenzMaxim | 74:23be10c32fa3 | 644 | return Success; |
| IanBenzMaxim | 49:36954b62f503 | 645 | } |
| IanBenzMaxim | 49:36954b62f503 | 646 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 647 | OneWireSlave::CmdResult DS28E15_22_25::loadSecret(bool lock) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 648 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 649 | uint8_t buf[256], cs; |
| IanBenzMaxim | 74:23be10c32fa3 | 650 | int cnt = 0; |
| IanBenzMaxim | 77:529edb329ee0 | 651 | |
| IanBenzMaxim | 77:529edb329ee0 | 652 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 653 | { |
| IanBenzMaxim | 77:529edb329ee0 | 654 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 655 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 656 | |
| IanBenzMaxim | 75:8b627804927c | 657 | buf[cnt++] = LoadAndLockSecret; |
| IanBenzMaxim | 74:23be10c32fa3 | 658 | buf[cnt++] = (lock) ? 0xE0 : 0x00; // lock flag |
| IanBenzMaxim | 74:23be10c32fa3 | 659 | |
| IanBenzMaxim | 74:23be10c32fa3 | 660 | // Send command |
| IanBenzMaxim | 77:529edb329ee0 | 661 | master().OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 662 | |
| IanBenzMaxim | 74:23be10c32fa3 | 663 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 664 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 665 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 666 | |
| IanBenzMaxim | 74:23be10c32fa3 | 667 | // check CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 668 | if (calculateCrc16(buf, 0, cnt) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 669 | { |
| IanBenzMaxim | 77:529edb329ee0 | 670 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 671 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 672 | |
| IanBenzMaxim | 74:23be10c32fa3 | 673 | // send release and strong pull-up |
| IanBenzMaxim | 77:529edb329ee0 | 674 | master().OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 675 | |
| IanBenzMaxim | 74:23be10c32fa3 | 676 | // now wait for the secret programming. |
| IanBenzMaxim | 74:23be10c32fa3 | 677 | wait_ms(secretEepromWriteDelayMs()); |
| IanBenzMaxim | 74:23be10c32fa3 | 678 | |
| IanBenzMaxim | 74:23be10c32fa3 | 679 | // disable strong pullup |
| IanBenzMaxim | 77:529edb329ee0 | 680 | master().OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 681 | |
| IanBenzMaxim | 74:23be10c32fa3 | 682 | // read the CS byte |
| IanBenzMaxim | 77:529edb329ee0 | 683 | master().OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 684 | |
| IanBenzMaxim | 74:23be10c32fa3 | 685 | if (cs == 0xAA) |
| IanBenzMaxim | 74:23be10c32fa3 | 686 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 687 | return Success; |
| IanBenzMaxim | 74:23be10c32fa3 | 688 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 689 | // else |
| IanBenzMaxim | 74:23be10c32fa3 | 690 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 691 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 692 | |
| IanBenzMaxim | 74:23be10c32fa3 | 693 | OneWireSlave::CmdResult DS28E15_22_25::readPage(unsigned int page, Page & rdbuf, bool continuing) const |
| IanBenzMaxim | 25:bdb1c5a53b58 | 694 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 695 | uint8_t buf[256]; |
| IanBenzMaxim | 74:23be10c32fa3 | 696 | int cnt, offset; |
| IanBenzMaxim | 74:23be10c32fa3 | 697 | |
| IanBenzMaxim | 74:23be10c32fa3 | 698 | cnt = 0; |
| IanBenzMaxim | 74:23be10c32fa3 | 699 | offset = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 700 | |
| IanBenzMaxim | 74:23be10c32fa3 | 701 | // check if not continuing a previous block write |
| IanBenzMaxim | 74:23be10c32fa3 | 702 | if (!continuing) |
| IanBenzMaxim | 74:23be10c32fa3 | 703 | { |
| IanBenzMaxim | 77:529edb329ee0 | 704 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 705 | { |
| IanBenzMaxim | 77:529edb329ee0 | 706 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 707 | } |
| IanBenzMaxim | 77:529edb329ee0 | 708 | |
| IanBenzMaxim | 75:8b627804927c | 709 | buf[cnt++] = ReadMemory; |
| IanBenzMaxim | 74:23be10c32fa3 | 710 | buf[cnt++] = page; // address |
| IanBenzMaxim | 25:bdb1c5a53b58 | 711 | |
| IanBenzMaxim | 74:23be10c32fa3 | 712 | // Send command |
| IanBenzMaxim | 77:529edb329ee0 | 713 | master().OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 714 | |
| IanBenzMaxim | 74:23be10c32fa3 | 715 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 716 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 717 | cnt += 2; |
| IanBenzMaxim | 74:23be10c32fa3 | 718 | |
| IanBenzMaxim | 74:23be10c32fa3 | 719 | offset = cnt; |
| IanBenzMaxim | 74:23be10c32fa3 | 720 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 721 | |
| IanBenzMaxim | 74:23be10c32fa3 | 722 | // read data and CRC16 |
| IanBenzMaxim | 77:529edb329ee0 | 723 | master().OWReadBlock(&buf[cnt], (rdbuf.length + 2)); |
| IanBenzMaxim | 74:23be10c32fa3 | 724 | cnt += 34; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 725 | |
| IanBenzMaxim | 74:23be10c32fa3 | 726 | // check the first CRC16 |
| IanBenzMaxim | 74:23be10c32fa3 | 727 | if (!continuing) |
| IanBenzMaxim | 74:23be10c32fa3 | 728 | { |
| IanBenzMaxim | 78:0cbbac7f2016 | 729 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 730 | { |
| IanBenzMaxim | 77:529edb329ee0 | 731 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 732 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 733 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 734 | |
| IanBenzMaxim | 74:23be10c32fa3 | 735 | // check the second CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 736 | if (calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 737 | { |
| IanBenzMaxim | 77:529edb329ee0 | 738 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 739 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 740 | |
| IanBenzMaxim | 74:23be10c32fa3 | 741 | // copy the data to the read buffer |
| IanBenzMaxim | 74:23be10c32fa3 | 742 | std::memcpy(rdbuf, &buf[offset], rdbuf.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 743 | |
| IanBenzMaxim | 74:23be10c32fa3 | 744 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 745 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 746 | |
| IanBenzMaxim | 74:23be10c32fa3 | 747 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthSegmentMac(unsigned int pageNum, unsigned int segmentNum, const Segment & newData, const Mac & mac, bool continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 748 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 749 | uint8_t buf[256], cs; |
| IanBenzMaxim | 74:23be10c32fa3 | 750 | int cnt, i, offset; |
| IanBenzMaxim | 74:23be10c32fa3 | 751 | |
| IanBenzMaxim | 74:23be10c32fa3 | 752 | cnt = 0; |
| IanBenzMaxim | 74:23be10c32fa3 | 753 | offset = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 754 | |
| IanBenzMaxim | 74:23be10c32fa3 | 755 | // check if not continuing a previous block write |
| IanBenzMaxim | 74:23be10c32fa3 | 756 | if (!continuing) |
| IanBenzMaxim | 74:23be10c32fa3 | 757 | { |
| IanBenzMaxim | 77:529edb329ee0 | 758 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 759 | { |
| IanBenzMaxim | 77:529edb329ee0 | 760 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 761 | } |
| IanBenzMaxim | 77:529edb329ee0 | 762 | |
| IanBenzMaxim | 75:8b627804927c | 763 | buf[cnt++] = AuthWriteMemory; |
| IanBenzMaxim | 74:23be10c32fa3 | 764 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
| IanBenzMaxim | 25:bdb1c5a53b58 | 765 | |
| IanBenzMaxim | 74:23be10c32fa3 | 766 | // Send command |
| IanBenzMaxim | 77:529edb329ee0 | 767 | master().OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 768 | |
| IanBenzMaxim | 74:23be10c32fa3 | 769 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 770 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 771 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 772 | |
| IanBenzMaxim | 74:23be10c32fa3 | 773 | offset = cnt; |
| IanBenzMaxim | 74:23be10c32fa3 | 774 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 775 | |
| IanBenzMaxim | 74:23be10c32fa3 | 776 | // add the data |
| IanBenzMaxim | 74:23be10c32fa3 | 777 | for (i = 0; i < newData.length; i++) |
| IanBenzMaxim | 74:23be10c32fa3 | 778 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 779 | buf[cnt++] = newData[i]; |
| IanBenzMaxim | 74:23be10c32fa3 | 780 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 781 | |
| IanBenzMaxim | 74:23be10c32fa3 | 782 | // Send data |
| IanBenzMaxim | 77:529edb329ee0 | 783 | master().OWWriteBlock(newData, newData.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 784 | |
| IanBenzMaxim | 74:23be10c32fa3 | 785 | // read first CRC byte |
| IanBenzMaxim | 77:529edb329ee0 | 786 | master().OWReadByte(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 787 | |
| IanBenzMaxim | 74:23be10c32fa3 | 788 | // read the last CRC and enable power |
| IanBenzMaxim | 77:529edb329ee0 | 789 | master().OWReadBytePower(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 790 | |
| IanBenzMaxim | 74:23be10c32fa3 | 791 | // now wait for the MAC computation. |
| IanBenzMaxim | 74:23be10c32fa3 | 792 | wait_ms(shaComputationDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 793 | |
| IanBenzMaxim | 74:23be10c32fa3 | 794 | // disable strong pullup |
| IanBenzMaxim | 77:529edb329ee0 | 795 | master().OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 796 | |
| IanBenzMaxim | 74:23be10c32fa3 | 797 | // check the first CRC16 |
| IanBenzMaxim | 74:23be10c32fa3 | 798 | if (!continuing) |
| IanBenzMaxim | 74:23be10c32fa3 | 799 | { |
| IanBenzMaxim | 78:0cbbac7f2016 | 800 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 801 | { |
| IanBenzMaxim | 77:529edb329ee0 | 802 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 803 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 804 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 805 | |
| IanBenzMaxim | 74:23be10c32fa3 | 806 | // check the second CRC16 |
| IanBenzMaxim | 79:7f22823a5a2d | 807 | uint16_t CRC16 = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 808 | |
| IanBenzMaxim | 74:23be10c32fa3 | 809 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
| IanBenzMaxim | 113:13e2865603df | 810 | if ((m_variant == DS28E25_Family) || (m_variant == DS28E22_Family)) |
| IanBenzMaxim | 74:23be10c32fa3 | 811 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 812 | if (continuing) |
| IanBenzMaxim | 74:23be10c32fa3 | 813 | { |
| IanBenzMaxim | 78:0cbbac7f2016 | 814 | CRC16 = calculateCrc16(CRC16, 0xAA); |
| IanBenzMaxim | 74:23be10c32fa3 | 815 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 816 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 817 | |
| IanBenzMaxim | 78:0cbbac7f2016 | 818 | CRC16 = calculateCrc16(buf, offset, (cnt - offset), CRC16); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 819 | |
| IanBenzMaxim | 74:23be10c32fa3 | 820 | if (CRC16 != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 821 | { |
| IanBenzMaxim | 77:529edb329ee0 | 822 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 823 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 824 | |
| IanBenzMaxim | 74:23be10c32fa3 | 825 | // transmit MAC as a block |
| IanBenzMaxim | 77:529edb329ee0 | 826 | master().OWWriteBlock(mac, mac.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 827 | |
| IanBenzMaxim | 74:23be10c32fa3 | 828 | // calculate CRC on MAC |
| IanBenzMaxim | 78:0cbbac7f2016 | 829 | CRC16 = calculateCrc16(mac, 0, mac.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 830 | |
| IanBenzMaxim | 74:23be10c32fa3 | 831 | // append read of CRC16 and CS byte |
| IanBenzMaxim | 77:529edb329ee0 | 832 | master().OWReadBlock(&buf[0], 3); |
| IanBenzMaxim | 74:23be10c32fa3 | 833 | cnt = 3; |
| IanBenzMaxim | 74:23be10c32fa3 | 834 | |
| IanBenzMaxim | 74:23be10c32fa3 | 835 | // ckeck CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 836 | CRC16 = calculateCrc16(buf, 0, (cnt - 1), CRC16); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 837 | |
| IanBenzMaxim | 74:23be10c32fa3 | 838 | if (CRC16 != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 839 | { |
| IanBenzMaxim | 77:529edb329ee0 | 840 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 841 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 842 | |
| IanBenzMaxim | 74:23be10c32fa3 | 843 | // check CS |
| IanBenzMaxim | 74:23be10c32fa3 | 844 | if (buf[cnt - 1] != 0xAA) |
| IanBenzMaxim | 74:23be10c32fa3 | 845 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 846 | return OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 847 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 848 | |
| IanBenzMaxim | 74:23be10c32fa3 | 849 | // send release and strong pull-up |
| IanBenzMaxim | 77:529edb329ee0 | 850 | master().OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 851 | |
| IanBenzMaxim | 74:23be10c32fa3 | 852 | // now wait for the programming. |
| IanBenzMaxim | 74:23be10c32fa3 | 853 | wait_ms(eepromWriteDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 854 | |
| IanBenzMaxim | 74:23be10c32fa3 | 855 | // disable strong pullup |
| IanBenzMaxim | 77:529edb329ee0 | 856 | master().OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 857 | |
| IanBenzMaxim | 74:23be10c32fa3 | 858 | // read the CS byte |
| IanBenzMaxim | 77:529edb329ee0 | 859 | master().OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 860 | |
| IanBenzMaxim | 74:23be10c32fa3 | 861 | if (cs == 0xAA) |
| IanBenzMaxim | 74:23be10c32fa3 | 862 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 863 | return Success; |
| IanBenzMaxim | 74:23be10c32fa3 | 864 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 865 | // else |
| IanBenzMaxim | 74:23be10c32fa3 | 866 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 867 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 868 | |
| IanBenzMaxim | 74:23be10c32fa3 | 869 | 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 | 870 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 871 | ISha256MacCoproc::WriteMacData MT; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 872 | |
| IanBenzMaxim | 74:23be10c32fa3 | 873 | // insert ROM number |
| IanBenzMaxim | 74:23be10c32fa3 | 874 | std::memcpy(&MT[0], romId, RomId::byteLen); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 875 | |
| IanBenzMaxim | 74:23be10c32fa3 | 876 | MT[11] = segmentNum; |
| IanBenzMaxim | 74:23be10c32fa3 | 877 | MT[10] = pageNum; |
| IanBenzMaxim | 74:23be10c32fa3 | 878 | MT[9] = manId[0]; |
| IanBenzMaxim | 74:23be10c32fa3 | 879 | MT[8] = manId[1]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 880 | |
| IanBenzMaxim | 74:23be10c32fa3 | 881 | // insert old data |
| IanBenzMaxim | 74:23be10c32fa3 | 882 | std::memcpy(&MT[12], oldData, Segment::length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 883 | |
| IanBenzMaxim | 74:23be10c32fa3 | 884 | // insert new data |
| IanBenzMaxim | 74:23be10c32fa3 | 885 | std::memcpy(&MT[16], newData, Segment::length); |
| IanBenzMaxim | 74:23be10c32fa3 | 886 | |
| IanBenzMaxim | 74:23be10c32fa3 | 887 | return MacCoproc.computeWriteMac(MT, mac); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 888 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 889 | |
| IanBenzMaxim | 73:2cecc1372acc | 890 | 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 | 891 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 892 | ISha256MacCoproc::WriteMacData MT; |
| IanBenzMaxim | 74:23be10c32fa3 | 893 | |
| IanBenzMaxim | 74:23be10c32fa3 | 894 | // insert ROM number |
| IanBenzMaxim | 74:23be10c32fa3 | 895 | std::memcpy(MT, romId, RomId::byteLen); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 896 | |
| IanBenzMaxim | 74:23be10c32fa3 | 897 | // instert block and page |
| IanBenzMaxim | 74:23be10c32fa3 | 898 | MT[11] = 0; |
| IanBenzMaxim | 74:23be10c32fa3 | 899 | MT[10] = newProtection.blockNum(); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 900 | |
| IanBenzMaxim | 74:23be10c32fa3 | 901 | MT[9] = manId[0]; |
| IanBenzMaxim | 74:23be10c32fa3 | 902 | MT[8] = manId[1]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 903 | |
| IanBenzMaxim | 74:23be10c32fa3 | 904 | // old data |
| IanBenzMaxim | 74:23be10c32fa3 | 905 | MT[12] = oldProtection.authProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 74:23be10c32fa3 | 906 | MT[13] = oldProtection.eepromEmulation() ? 0x01 : 0x00; |
| IanBenzMaxim | 74:23be10c32fa3 | 907 | MT[14] = oldProtection.writeProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 74:23be10c32fa3 | 908 | MT[15] = oldProtection.readProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 74:23be10c32fa3 | 909 | // new data |
| IanBenzMaxim | 74:23be10c32fa3 | 910 | MT[16] = newProtection.authProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 74:23be10c32fa3 | 911 | MT[17] = newProtection.eepromEmulation() ? 0x01 : 0x00; |
| IanBenzMaxim | 74:23be10c32fa3 | 912 | MT[18] = newProtection.writeProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 74:23be10c32fa3 | 913 | MT[19] = newProtection.readProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 914 | |
| IanBenzMaxim | 74:23be10c32fa3 | 915 | // compute the mac |
| IanBenzMaxim | 74:23be10c32fa3 | 916 | return MacCoproc.computeWriteMac(MT, mac); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 917 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 918 | |
| IanBenzMaxim | 73:2cecc1372acc | 919 | 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 | 920 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 921 | uint8_t buf[256], cs; |
| IanBenzMaxim | 74:23be10c32fa3 | 922 | int cnt, offset; |
| IanBenzMaxim | 74:23be10c32fa3 | 923 | |
| IanBenzMaxim | 74:23be10c32fa3 | 924 | cnt = 0; |
| IanBenzMaxim | 74:23be10c32fa3 | 925 | offset = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 926 | |
| IanBenzMaxim | 74:23be10c32fa3 | 927 | // check if not continuing a previous block write |
| IanBenzMaxim | 74:23be10c32fa3 | 928 | if (!continuing) |
| IanBenzMaxim | 74:23be10c32fa3 | 929 | { |
| IanBenzMaxim | 77:529edb329ee0 | 930 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 931 | { |
| IanBenzMaxim | 77:529edb329ee0 | 932 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 933 | } |
| IanBenzMaxim | 77:529edb329ee0 | 934 | |
| IanBenzMaxim | 75:8b627804927c | 935 | buf[cnt++] = AuthWriteMemory; |
| IanBenzMaxim | 74:23be10c32fa3 | 936 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
| IanBenzMaxim | 74:23be10c32fa3 | 937 | |
| IanBenzMaxim | 74:23be10c32fa3 | 938 | // Send command |
| IanBenzMaxim | 77:529edb329ee0 | 939 | master().OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 940 | |
| IanBenzMaxim | 74:23be10c32fa3 | 941 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 942 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 943 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 944 | |
| IanBenzMaxim | 74:23be10c32fa3 | 945 | offset = cnt; |
| IanBenzMaxim | 74:23be10c32fa3 | 946 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 947 | |
| IanBenzMaxim | 74:23be10c32fa3 | 948 | // add the data |
| IanBenzMaxim | 74:23be10c32fa3 | 949 | for (size_t i = 0; i < newData.length; i++) |
| IanBenzMaxim | 74:23be10c32fa3 | 950 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 951 | buf[cnt++] = newData[i]; |
| IanBenzMaxim | 74:23be10c32fa3 | 952 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 953 | |
| IanBenzMaxim | 74:23be10c32fa3 | 954 | // Send data |
| IanBenzMaxim | 77:529edb329ee0 | 955 | master().OWWriteBlock(newData, newData.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 956 | |
| IanBenzMaxim | 74:23be10c32fa3 | 957 | // read first CRC byte |
| IanBenzMaxim | 77:529edb329ee0 | 958 | master().OWReadByte(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 959 | |
| IanBenzMaxim | 74:23be10c32fa3 | 960 | // read the last CRC and enable power |
| IanBenzMaxim | 77:529edb329ee0 | 961 | master().OWReadBytePower(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 962 | |
| IanBenzMaxim | 74:23be10c32fa3 | 963 | // now wait for the MAC computation. |
| IanBenzMaxim | 74:23be10c32fa3 | 964 | wait_ms(shaComputationDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 965 | |
| IanBenzMaxim | 74:23be10c32fa3 | 966 | // disable strong pullup |
| IanBenzMaxim | 77:529edb329ee0 | 967 | master().OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 968 | |
| IanBenzMaxim | 74:23be10c32fa3 | 969 | // check the first CRC16 |
| IanBenzMaxim | 74:23be10c32fa3 | 970 | if (!continuing) |
| IanBenzMaxim | 74:23be10c32fa3 | 971 | { |
| IanBenzMaxim | 78:0cbbac7f2016 | 972 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 973 | { |
| IanBenzMaxim | 77:529edb329ee0 | 974 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 975 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 976 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 977 | |
| IanBenzMaxim | 74:23be10c32fa3 | 978 | // check the second CRC16 |
| IanBenzMaxim | 79:7f22823a5a2d | 979 | uint16_t CRC16 = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 980 | |
| IanBenzMaxim | 74:23be10c32fa3 | 981 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
| IanBenzMaxim | 113:13e2865603df | 982 | if ((m_variant == DS28E25_Family) || (m_variant == DS28E22_Family)) |
| IanBenzMaxim | 74:23be10c32fa3 | 983 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 984 | if (continuing) |
| IanBenzMaxim | 78:0cbbac7f2016 | 985 | CRC16 = calculateCrc16(CRC16, 0xAA); |
| IanBenzMaxim | 74:23be10c32fa3 | 986 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 987 | |
| IanBenzMaxim | 78:0cbbac7f2016 | 988 | CRC16 = calculateCrc16(buf, offset, (cnt - offset), CRC16); |
| IanBenzMaxim | 74:23be10c32fa3 | 989 | |
| IanBenzMaxim | 74:23be10c32fa3 | 990 | if (CRC16 != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 991 | { |
| IanBenzMaxim | 77:529edb329ee0 | 992 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 993 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 994 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 995 | // compute the mac |
| IanBenzMaxim | 74:23be10c32fa3 | 996 | ISha256MacCoproc::CmdResult result; |
| IanBenzMaxim | 74:23be10c32fa3 | 997 | Mac mac; |
| IanBenzMaxim | 82:c11090a32471 | 998 | result = computeSegmentWriteMac(MacCoproc, pageNum, segmentNum, newData, oldData, romId(), manId(), mac); |
| IanBenzMaxim | 74:23be10c32fa3 | 999 | if (result != ISha256MacCoproc::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 1000 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 1001 | return OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 1002 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1003 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1004 | // transmit MAC as a block |
| IanBenzMaxim | 77:529edb329ee0 | 1005 | master().OWWriteBlock(mac, mac.length); |
| IanBenzMaxim | 74:23be10c32fa3 | 1006 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1007 | // calculate CRC on MAC |
| IanBenzMaxim | 78:0cbbac7f2016 | 1008 | CRC16 = calculateCrc16(mac, 0, mac.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1009 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1010 | // append read of CRC16 and CS byte |
| IanBenzMaxim | 77:529edb329ee0 | 1011 | master().OWReadBlock(&buf[0], 3); |
| IanBenzMaxim | 74:23be10c32fa3 | 1012 | cnt = 3; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1013 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1014 | // ckeck CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 1015 | CRC16 = calculateCrc16(buf, 0, (cnt - 1), CRC16); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1016 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1017 | if (CRC16 != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 1018 | { |
| IanBenzMaxim | 77:529edb329ee0 | 1019 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 1020 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1021 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1022 | // check CS |
| IanBenzMaxim | 74:23be10c32fa3 | 1023 | if (buf[cnt - 1] != 0xAA) |
| IanBenzMaxim | 74:23be10c32fa3 | 1024 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 1025 | return OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 1026 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1027 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1028 | // send release and strong pull-up |
| IanBenzMaxim | 77:529edb329ee0 | 1029 | master().OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1030 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1031 | // now wait for the programming. |
| IanBenzMaxim | 74:23be10c32fa3 | 1032 | wait_ms(eepromWriteDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1033 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1034 | // disable strong pullup |
| IanBenzMaxim | 77:529edb329ee0 | 1035 | master().OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1036 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1037 | // read the CS byte |
| IanBenzMaxim | 77:529edb329ee0 | 1038 | master().OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1039 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1040 | if (cs == 0xAA) |
| IanBenzMaxim | 74:23be10c32fa3 | 1041 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 1042 | return Success; |
| IanBenzMaxim | 74:23be10c32fa3 | 1043 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 1044 | // else |
| IanBenzMaxim | 74:23be10c32fa3 | 1045 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1046 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1047 | |
| IanBenzMaxim | 50:e967f9befbd0 | 1048 | OneWireSlave::CmdResult DS28E15_22_25::readSegment(unsigned int page, unsigned int segment, Segment & data, bool continuing) const |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1049 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 1050 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 74:23be10c32fa3 | 1051 | uint8_t buf[2]; |
| IanBenzMaxim | 74:23be10c32fa3 | 1052 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1053 | if (!continuing) |
| IanBenzMaxim | 74:23be10c32fa3 | 1054 | { |
| IanBenzMaxim | 77:529edb329ee0 | 1055 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 1056 | { |
| IanBenzMaxim | 77:529edb329ee0 | 1057 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 1058 | } |
| IanBenzMaxim | 77:529edb329ee0 | 1059 | |
| IanBenzMaxim | 75:8b627804927c | 1060 | buf[0] = ReadMemory; |
| IanBenzMaxim | 74:23be10c32fa3 | 1061 | buf[1] = (segment << 5) | page; |
| IanBenzMaxim | 74:23be10c32fa3 | 1062 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1063 | // Transmit command |
| IanBenzMaxim | 77:529edb329ee0 | 1064 | master().OWWriteBlock(buf, 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 1065 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1066 | // Receive CRC |
| IanBenzMaxim | 77:529edb329ee0 | 1067 | result = master().OWReadBlock(buf, 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 1068 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 1069 | else if (segment == 0) |
| IanBenzMaxim | 74:23be10c32fa3 | 1070 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 1071 | // Receive CRC from previous read |
| IanBenzMaxim | 77:529edb329ee0 | 1072 | result = master().OWReadBlock(buf, 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 1073 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 1074 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1075 | // Receive data |
| IanBenzMaxim | 74:23be10c32fa3 | 1076 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 1077 | { |
| IanBenzMaxim | 77:529edb329ee0 | 1078 | result = master().OWReadBlock(data, data.length); |
| IanBenzMaxim | 74:23be10c32fa3 | 1079 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 1080 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1081 | return (result == OneWireMaster::Success ? OneWireSlave::Success : OneWireSlave::CommunicationError); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1082 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1083 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1084 | OneWireSlave::CmdResult DS28E15_22_25::writeSegment(unsigned int page, unsigned int block, const Segment & data, bool continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1085 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 1086 | uint8_t buf[256], cs; |
| IanBenzMaxim | 74:23be10c32fa3 | 1087 | int cnt, offset; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1088 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1089 | cnt = 0; |
| IanBenzMaxim | 74:23be10c32fa3 | 1090 | offset = 0; |
| IanBenzMaxim | 74:23be10c32fa3 | 1091 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1092 | // check if not continuing a previous block write |
| IanBenzMaxim | 74:23be10c32fa3 | 1093 | if (!continuing) |
| IanBenzMaxim | 74:23be10c32fa3 | 1094 | { |
| IanBenzMaxim | 77:529edb329ee0 | 1095 | if (selectDevice() != OneWireMaster::Success) |
| IanBenzMaxim | 77:529edb329ee0 | 1096 | { |
| IanBenzMaxim | 77:529edb329ee0 | 1097 | return CommunicationError; |
| IanBenzMaxim | 77:529edb329ee0 | 1098 | } |
| IanBenzMaxim | 77:529edb329ee0 | 1099 | |
| IanBenzMaxim | 75:8b627804927c | 1100 | buf[cnt++] = WriteMemory; |
| IanBenzMaxim | 74:23be10c32fa3 | 1101 | buf[cnt++] = (block << 5) | page; // address |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1102 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1103 | // Send command |
| IanBenzMaxim | 77:529edb329ee0 | 1104 | master().OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1105 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1106 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 1107 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 1108 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1109 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1110 | offset = cnt; |
| IanBenzMaxim | 74:23be10c32fa3 | 1111 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1112 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1113 | // add the data |
| IanBenzMaxim | 74:23be10c32fa3 | 1114 | for (size_t i = 0; i < data.length; i++) |
| IanBenzMaxim | 74:23be10c32fa3 | 1115 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 1116 | buf[cnt++] = data[i]; |
| IanBenzMaxim | 74:23be10c32fa3 | 1117 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1118 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1119 | // Send data |
| IanBenzMaxim | 77:529edb329ee0 | 1120 | master().OWWriteBlock(data, data.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1121 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1122 | // Read CRC |
| IanBenzMaxim | 77:529edb329ee0 | 1123 | master().OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 74:23be10c32fa3 | 1124 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1125 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1126 | // check the first CRC16 |
| IanBenzMaxim | 74:23be10c32fa3 | 1127 | if (!continuing) |
| IanBenzMaxim | 74:23be10c32fa3 | 1128 | { |
| IanBenzMaxim | 78:0cbbac7f2016 | 1129 | if (calculateCrc16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 1130 | { |
| IanBenzMaxim | 77:529edb329ee0 | 1131 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 1132 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 1133 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 1134 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1135 | // check the second CRC16 |
| IanBenzMaxim | 78:0cbbac7f2016 | 1136 | if (calculateCrc16(buf, offset, (cnt - offset)) != 0xB001) |
| IanBenzMaxim | 74:23be10c32fa3 | 1137 | { |
| IanBenzMaxim | 77:529edb329ee0 | 1138 | return CrcError; |
| IanBenzMaxim | 74:23be10c32fa3 | 1139 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1140 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1141 | // send release and strong pull-up |
| IanBenzMaxim | 77:529edb329ee0 | 1142 | master().OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1143 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1144 | // now wait for the programming. |
| IanBenzMaxim | 74:23be10c32fa3 | 1145 | wait_ms(eepromWriteDelayMs); |
| IanBenzMaxim | 74:23be10c32fa3 | 1146 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1147 | // disable strong pullup |
| IanBenzMaxim | 77:529edb329ee0 | 1148 | master().OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1149 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1150 | // read the CS byte |
| IanBenzMaxim | 77:529edb329ee0 | 1151 | master().OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1152 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1153 | if (cs == 0xAA) |
| IanBenzMaxim | 74:23be10c32fa3 | 1154 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 1155 | return Success; |
| IanBenzMaxim | 74:23be10c32fa3 | 1156 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 1157 | // else |
| IanBenzMaxim | 74:23be10c32fa3 | 1158 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1159 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1160 | |
| IanBenzMaxim | 73:2cecc1372acc | 1161 | 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 | 1162 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 1163 | ISha256MacCoproc::SlaveSecretData slaveSecretData; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1164 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1165 | // insert ROM number |
| IanBenzMaxim | 74:23be10c32fa3 | 1166 | std::memcpy(slaveSecretData, romId, RomId::byteLen); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1167 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1168 | slaveSecretData[11] = 0x00; |
| IanBenzMaxim | 74:23be10c32fa3 | 1169 | slaveSecretData[10] = bindingPageNum; |
| IanBenzMaxim | 74:23be10c32fa3 | 1170 | slaveSecretData[9] = manId[0]; |
| IanBenzMaxim | 74:23be10c32fa3 | 1171 | slaveSecretData[8] = manId[1]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1172 | |
| IanBenzMaxim | 74:23be10c32fa3 | 1173 | return MacCoproc.computeSlaveSecret(ISha256MacCoproc::DevicePage(bindingPage), partialSecret, slaveSecretData); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 1174 | } |