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Superseded by MaximInterface.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@74:23be10c32fa3, 2016-05-13 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Fri May 13 07:48:35 2016 -0500
- Revision:
- 74:23be10c32fa3
- Parent:
- 73:2cecc1372acc
- Child:
- 75:8b627804927c
Assimilated indentation and braces.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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IanBenzMaxim | 25:bdb1c5a53b58 | 1 | //------------Copyright (C) 2013 Maxim Integrated Products -------------- |
IanBenzMaxim | 25:bdb1c5a53b58 | 2 | // |
IanBenzMaxim | 25:bdb1c5a53b58 | 3 | // Permission is hereby granted, free of charge, to any person obtaining a |
IanBenzMaxim | 25:bdb1c5a53b58 | 4 | // copy of this software and associated documentation files (the "Software"), |
IanBenzMaxim | 25:bdb1c5a53b58 | 5 | // to deal in the Software without restriction, including without limitation |
IanBenzMaxim | 25:bdb1c5a53b58 | 6 | // the rights to use, copy, modify, merge, publish, distribute, sublicense, |
IanBenzMaxim | 25:bdb1c5a53b58 | 7 | // and/or sell copies of the Software, and to permit persons to whom the |
IanBenzMaxim | 25:bdb1c5a53b58 | 8 | // Software is furnished to do so, subject to the following conditions: |
IanBenzMaxim | 25:bdb1c5a53b58 | 9 | // |
IanBenzMaxim | 25:bdb1c5a53b58 | 10 | // The above copyright notice and this permission notice shall be included |
IanBenzMaxim | 25:bdb1c5a53b58 | 11 | // in all copies or substantial portions of the Software. |
IanBenzMaxim | 25:bdb1c5a53b58 | 12 | // |
IanBenzMaxim | 25:bdb1c5a53b58 | 13 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
IanBenzMaxim | 25:bdb1c5a53b58 | 14 | // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
IanBenzMaxim | 25:bdb1c5a53b58 | 15 | // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
IanBenzMaxim | 25:bdb1c5a53b58 | 16 | // IN NO EVENT SHALL MAXIM INTEGRATED PRODCUTS BE LIABLE FOR ANY CLAIM, DAMAGES |
IanBenzMaxim | 25:bdb1c5a53b58 | 17 | // OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
IanBenzMaxim | 25:bdb1c5a53b58 | 18 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
IanBenzMaxim | 25:bdb1c5a53b58 | 19 | // OTHER DEALINGS IN THE SOFTWARE. |
IanBenzMaxim | 25:bdb1c5a53b58 | 20 | // |
IanBenzMaxim | 25:bdb1c5a53b58 | 21 | // Except as contained in this notice, the name of Maxim Integrated Products |
IanBenzMaxim | 25:bdb1c5a53b58 | 22 | // shall not be used except as stated in the Maxim Integrated Products |
IanBenzMaxim | 25:bdb1c5a53b58 | 23 | // Branding Policy. |
IanBenzMaxim | 25:bdb1c5a53b58 | 24 | // --------------------------------------------------------------------------- |
IanBenzMaxim | 25:bdb1c5a53b58 | 25 | |
IanBenzMaxim | 73:2cecc1372acc | 26 | #include "DS28E15_22_25.h" |
IanBenzMaxim | 73:2cecc1372acc | 27 | #include "Masters/OneWireMaster.h" |
IanBenzMaxim | 73:2cecc1372acc | 28 | #include "wait_api.h" |
IanBenzMaxim | 73:2cecc1372acc | 29 | |
IanBenzMaxim | 73:2cecc1372acc | 30 | using OneWire::Authenticators::DS28E15_22_25; |
IanBenzMaxim | 73:2cecc1372acc | 31 | using OneWire::Authenticators::ISha256MacCoproc; |
IanBenzMaxim | 73:2cecc1372acc | 32 | using OneWire::OneWireSlave; |
IanBenzMaxim | 73:2cecc1372acc | 33 | using OneWire::Masters::OneWireMaster; |
IanBenzMaxim | 25:bdb1c5a53b58 | 34 | |
IanBenzMaxim | 49:36954b62f503 | 35 | /// 1-Wire device commands. |
IanBenzMaxim | 49:36954b62f503 | 36 | enum Command |
IanBenzMaxim | 49:36954b62f503 | 37 | { |
IanBenzMaxim | 74:23be10c32fa3 | 38 | CMD_WRITE_MEMORY = 0x55, |
IanBenzMaxim | 74:23be10c32fa3 | 39 | CMD_READ_MEMORY = 0xF0, |
IanBenzMaxim | 74:23be10c32fa3 | 40 | CMD_LOAD_LOCK_SECRET = 0x33, |
IanBenzMaxim | 74:23be10c32fa3 | 41 | CMD_COMPUTE_LOCK_SECRET = 0x3C, |
IanBenzMaxim | 74:23be10c32fa3 | 42 | CMD_READ_WRITE_SCRATCHPAD = 0x0F, |
IanBenzMaxim | 74:23be10c32fa3 | 43 | CMD_COMPUTE_PAGEMAC = 0xA5, |
IanBenzMaxim | 74:23be10c32fa3 | 44 | CMD_READ_STATUS = 0xAA, |
IanBenzMaxim | 74:23be10c32fa3 | 45 | CMD_WRITE_BLOCK_PROTECT = 0xC3, |
IanBenzMaxim | 74:23be10c32fa3 | 46 | CMD_WRITE_AUTH_MEMORY = 0x5A, |
IanBenzMaxim | 74:23be10c32fa3 | 47 | CMD_WRITE_AUTH_PROTECT = 0xCC, |
IanBenzMaxim | 49:36954b62f503 | 48 | }; |
IanBenzMaxim | 25:bdb1c5a53b58 | 49 | |
IanBenzMaxim | 62:43039aeca2ab | 50 | DS28E15_22_25::Segment DS28E15_22_25::Page::toSegment(unsigned int segmentNum) const |
IanBenzMaxim | 62:43039aeca2ab | 51 | { |
IanBenzMaxim | 74:23be10c32fa3 | 52 | if (segmentNum > (segmentsPerPage - 1)) |
IanBenzMaxim | 74:23be10c32fa3 | 53 | { |
IanBenzMaxim | 74:23be10c32fa3 | 54 | segmentNum = (segmentsPerPage - 1); |
IanBenzMaxim | 74:23be10c32fa3 | 55 | } |
IanBenzMaxim | 74:23be10c32fa3 | 56 | return Segment(*reinterpret_cast<const Segment::Buffer *>(&m_data[segmentNum * sizeof(Segment::Buffer)])); |
IanBenzMaxim | 62:43039aeca2ab | 57 | } |
IanBenzMaxim | 62:43039aeca2ab | 58 | |
IanBenzMaxim | 62:43039aeca2ab | 59 | void DS28E15_22_25::Page::fromSegment(unsigned int segmentNum, const Segment & segment) |
IanBenzMaxim | 62:43039aeca2ab | 60 | { |
IanBenzMaxim | 74:23be10c32fa3 | 61 | if (segmentNum > (segmentsPerPage - 1)) |
IanBenzMaxim | 74:23be10c32fa3 | 62 | { |
IanBenzMaxim | 74:23be10c32fa3 | 63 | segmentNum = (segmentsPerPage - 1); |
IanBenzMaxim | 74:23be10c32fa3 | 64 | } |
IanBenzMaxim | 74:23be10c32fa3 | 65 | std::memcpy(&m_data[segmentNum * sizeof(Segment::Buffer)], &static_cast<const Segment::Buffer &>(segment), Segment::length); |
IanBenzMaxim | 62:43039aeca2ab | 66 | } |
IanBenzMaxim | 62:43039aeca2ab | 67 | |
IanBenzMaxim | 73:2cecc1372acc | 68 | DS28E15_22_25::BlockProtection::BlockProtection(bool readProtection, bool writeProtection, bool eepromEmulation, bool authProtection, uint8_t blockNum) |
IanBenzMaxim | 34:11fffbe98ef9 | 69 | { |
IanBenzMaxim | 74:23be10c32fa3 | 70 | setReadProtection(readProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 71 | setWriteProtection(writeProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 72 | setEepromEmulation(eepromEmulation); |
IanBenzMaxim | 74:23be10c32fa3 | 73 | setAuthProtection(authProtection); |
IanBenzMaxim | 74:23be10c32fa3 | 74 | setBlockNum(blockNum); |
IanBenzMaxim | 34:11fffbe98ef9 | 75 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 76 | |
IanBenzMaxim | 73:2cecc1372acc | 77 | void DS28E15_22_25::BlockProtection::setBlockNum(uint8_t blockNum) |
IanBenzMaxim | 34:11fffbe98ef9 | 78 | { |
IanBenzMaxim | 74:23be10c32fa3 | 79 | m_status &= ~blockNumMask; |
IanBenzMaxim | 74:23be10c32fa3 | 80 | m_status |= (blockNum & blockNumMask); |
IanBenzMaxim | 34:11fffbe98ef9 | 81 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 82 | |
IanBenzMaxim | 34:11fffbe98ef9 | 83 | bool DS28E15_22_25::BlockProtection::noProtection() const |
IanBenzMaxim | 34:11fffbe98ef9 | 84 | { |
IanBenzMaxim | 74:23be10c32fa3 | 85 | return !readProtection() && !writeProtection() && !eepromEmulation() && !authProtection(); |
IanBenzMaxim | 34:11fffbe98ef9 | 86 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 87 | |
IanBenzMaxim | 34:11fffbe98ef9 | 88 | void DS28E15_22_25::BlockProtection::setReadProtection(bool readProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 89 | { |
IanBenzMaxim | 74:23be10c32fa3 | 90 | if (readProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 91 | { |
IanBenzMaxim | 74:23be10c32fa3 | 92 | m_status |= readProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 93 | } |
IanBenzMaxim | 74:23be10c32fa3 | 94 | else |
IanBenzMaxim | 74:23be10c32fa3 | 95 | { |
IanBenzMaxim | 74:23be10c32fa3 | 96 | m_status &= ~readProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 97 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 98 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 99 | |
IanBenzMaxim | 34:11fffbe98ef9 | 100 | void DS28E15_22_25::BlockProtection::setWriteProtection(bool writeProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 101 | { |
IanBenzMaxim | 74:23be10c32fa3 | 102 | if (writeProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 103 | { |
IanBenzMaxim | 74:23be10c32fa3 | 104 | m_status |= writeProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 105 | } |
IanBenzMaxim | 74:23be10c32fa3 | 106 | else |
IanBenzMaxim | 74:23be10c32fa3 | 107 | { |
IanBenzMaxim | 74:23be10c32fa3 | 108 | m_status &= ~writeProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 109 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 110 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 111 | |
IanBenzMaxim | 34:11fffbe98ef9 | 112 | void DS28E15_22_25::BlockProtection::setEepromEmulation(bool eepromEmulation) |
IanBenzMaxim | 34:11fffbe98ef9 | 113 | { |
IanBenzMaxim | 74:23be10c32fa3 | 114 | if (eepromEmulation) |
IanBenzMaxim | 74:23be10c32fa3 | 115 | { |
IanBenzMaxim | 74:23be10c32fa3 | 116 | m_status |= eepromEmulationMask; |
IanBenzMaxim | 74:23be10c32fa3 | 117 | } |
IanBenzMaxim | 74:23be10c32fa3 | 118 | else |
IanBenzMaxim | 74:23be10c32fa3 | 119 | { |
IanBenzMaxim | 74:23be10c32fa3 | 120 | m_status &= ~eepromEmulationMask; |
IanBenzMaxim | 74:23be10c32fa3 | 121 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 122 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 123 | |
IanBenzMaxim | 34:11fffbe98ef9 | 124 | void DS28E15_22_25::BlockProtection::setAuthProtection(bool authProtection) |
IanBenzMaxim | 34:11fffbe98ef9 | 125 | { |
IanBenzMaxim | 74:23be10c32fa3 | 126 | if (authProtection) |
IanBenzMaxim | 74:23be10c32fa3 | 127 | { |
IanBenzMaxim | 74:23be10c32fa3 | 128 | m_status |= authProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 129 | } |
IanBenzMaxim | 74:23be10c32fa3 | 130 | else |
IanBenzMaxim | 74:23be10c32fa3 | 131 | { |
IanBenzMaxim | 74:23be10c32fa3 | 132 | m_status &= ~authProtectionMask; |
IanBenzMaxim | 74:23be10c32fa3 | 133 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 134 | } |
IanBenzMaxim | 34:11fffbe98ef9 | 135 | |
IanBenzMaxim | 34:11fffbe98ef9 | 136 | DS28E15_22_25::DS28E15_22_25(OneWireMaster& OW_master, bool lowVoltage) |
IanBenzMaxim | 74:23be10c32fa3 | 137 | : lowVoltage(lowVoltage), m_OW_master(OW_master) |
IanBenzMaxim | 25:bdb1c5a53b58 | 138 | { |
IanBenzMaxim | 74:23be10c32fa3 | 139 | std::memset(manId, 0x00, manId.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 140 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 141 | |
IanBenzMaxim | 34:11fffbe98ef9 | 142 | DS28E15_22_25::MemoryPages DS28E15_22_25::memoryPages() |
IanBenzMaxim | 25:bdb1c5a53b58 | 143 | { |
IanBenzMaxim | 74:23be10c32fa3 | 144 | MemoryPages pages; |
IanBenzMaxim | 74:23be10c32fa3 | 145 | |
IanBenzMaxim | 74:23be10c32fa3 | 146 | switch (romId.familyCode()) |
IanBenzMaxim | 74:23be10c32fa3 | 147 | { |
IanBenzMaxim | 74:23be10c32fa3 | 148 | case DS28E25_FAMILY: |
IanBenzMaxim | 74:23be10c32fa3 | 149 | pages = DS28E25_PAGES; |
IanBenzMaxim | 74:23be10c32fa3 | 150 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 151 | |
IanBenzMaxim | 74:23be10c32fa3 | 152 | case DS28E22_FAMILY: |
IanBenzMaxim | 74:23be10c32fa3 | 153 | pages = DS28E22_PAGES; |
IanBenzMaxim | 74:23be10c32fa3 | 154 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 155 | |
IanBenzMaxim | 74:23be10c32fa3 | 156 | case DS28E15_FAMILY: |
IanBenzMaxim | 74:23be10c32fa3 | 157 | pages = DS28E15_PAGES; |
IanBenzMaxim | 74:23be10c32fa3 | 158 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 159 | |
IanBenzMaxim | 74:23be10c32fa3 | 160 | default: |
IanBenzMaxim | 74:23be10c32fa3 | 161 | pages = UNKNOWN_PAGES; |
IanBenzMaxim | 74:23be10c32fa3 | 162 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 163 | } |
IanBenzMaxim | 74:23be10c32fa3 | 164 | |
IanBenzMaxim | 74:23be10c32fa3 | 165 | return pages; |
IanBenzMaxim | 25:bdb1c5a53b58 | 166 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 167 | |
IanBenzMaxim | 34:11fffbe98ef9 | 168 | DS28E15_22_25::ProtectionBlocks DS28E15_22_25::protectionBlocks() |
IanBenzMaxim | 25:bdb1c5a53b58 | 169 | { |
IanBenzMaxim | 74:23be10c32fa3 | 170 | ProtectionBlocks blocks; |
IanBenzMaxim | 74:23be10c32fa3 | 171 | |
IanBenzMaxim | 74:23be10c32fa3 | 172 | switch (romId.familyCode()) |
IanBenzMaxim | 74:23be10c32fa3 | 173 | { |
IanBenzMaxim | 74:23be10c32fa3 | 174 | case DS28E25_FAMILY: |
IanBenzMaxim | 74:23be10c32fa3 | 175 | blocks = DS28E25_BLOCKS; |
IanBenzMaxim | 74:23be10c32fa3 | 176 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 177 | |
IanBenzMaxim | 74:23be10c32fa3 | 178 | case DS28E22_FAMILY: |
IanBenzMaxim | 74:23be10c32fa3 | 179 | blocks = DS28E22_BLOCKS; |
IanBenzMaxim | 74:23be10c32fa3 | 180 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 181 | |
IanBenzMaxim | 74:23be10c32fa3 | 182 | case DS28E15_FAMILY: |
IanBenzMaxim | 74:23be10c32fa3 | 183 | blocks = DS28E15_BLOCKS; |
IanBenzMaxim | 74:23be10c32fa3 | 184 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 185 | |
IanBenzMaxim | 74:23be10c32fa3 | 186 | default: |
IanBenzMaxim | 74:23be10c32fa3 | 187 | blocks = UNKNOWN_BLOCKS; |
IanBenzMaxim | 74:23be10c32fa3 | 188 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 189 | } |
IanBenzMaxim | 74:23be10c32fa3 | 190 | |
IanBenzMaxim | 74:23be10c32fa3 | 191 | return blocks; |
IanBenzMaxim | 25:bdb1c5a53b58 | 192 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 193 | |
IanBenzMaxim | 74:23be10c32fa3 | 194 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthBlockProtection(const ISha256MacCoproc & MacCoproc, const BlockProtection & newProtection, const BlockProtection & oldProtection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 195 | { |
IanBenzMaxim | 74:23be10c32fa3 | 196 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 197 | int cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 198 | Mac mac; |
IanBenzMaxim | 74:23be10c32fa3 | 199 | |
IanBenzMaxim | 74:23be10c32fa3 | 200 | buf[cnt++] = CMD_WRITE_AUTH_PROTECT; |
IanBenzMaxim | 74:23be10c32fa3 | 201 | buf[cnt++] = newProtection.statusByte(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 202 | |
IanBenzMaxim | 74:23be10c32fa3 | 203 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 204 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 205 | |
IanBenzMaxim | 74:23be10c32fa3 | 206 | // read first CRC byte |
IanBenzMaxim | 74:23be10c32fa3 | 207 | m_OW_master.OWReadByte(buf[cnt++]); |
IanBenzMaxim | 74:23be10c32fa3 | 208 | |
IanBenzMaxim | 74:23be10c32fa3 | 209 | // read the last CRC and enable |
IanBenzMaxim | 74:23be10c32fa3 | 210 | m_OW_master.OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 211 | |
IanBenzMaxim | 74:23be10c32fa3 | 212 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 213 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 214 | |
IanBenzMaxim | 74:23be10c32fa3 | 215 | // disable strong pullup |
IanBenzMaxim | 74:23be10c32fa3 | 216 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
IanBenzMaxim | 25:bdb1c5a53b58 | 217 | |
IanBenzMaxim | 74:23be10c32fa3 | 218 | // check CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 219 | if (OneWireMaster::calculateCRC16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 220 | { |
IanBenzMaxim | 74:23be10c32fa3 | 221 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 222 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 223 | |
IanBenzMaxim | 74:23be10c32fa3 | 224 | ISha256MacCoproc::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 225 | result = computeProtectionWriteMac(MacCoproc, newProtection, oldProtection, romId, manId, mac); |
IanBenzMaxim | 74:23be10c32fa3 | 226 | if (result != ISha256MacCoproc::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 227 | { |
IanBenzMaxim | 74:23be10c32fa3 | 228 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 229 | } |
IanBenzMaxim | 74:23be10c32fa3 | 230 | cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 231 | |
IanBenzMaxim | 74:23be10c32fa3 | 232 | // send the MAC |
IanBenzMaxim | 74:23be10c32fa3 | 233 | m_OW_master.OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 74:23be10c32fa3 | 234 | |
IanBenzMaxim | 74:23be10c32fa3 | 235 | // Read CRC and CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 236 | m_OW_master.OWReadBlock(&buf[cnt], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 237 | cnt += 3; |
IanBenzMaxim | 25:bdb1c5a53b58 | 238 | |
IanBenzMaxim | 74:23be10c32fa3 | 239 | // check CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 240 | if (OneWireMaster::calculateCRC16(buf, 0, (cnt - 1), OneWireMaster::calculateCRC16(mac, 0, mac.length)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 241 | { |
IanBenzMaxim | 74:23be10c32fa3 | 242 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 243 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 244 | |
IanBenzMaxim | 74:23be10c32fa3 | 245 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 246 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 247 | { |
IanBenzMaxim | 74:23be10c32fa3 | 248 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 249 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 250 | |
IanBenzMaxim | 74:23be10c32fa3 | 251 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 252 | // DATASHEET_CORRECTION - last bit in release is a read-zero so don't check echo of write byte |
IanBenzMaxim | 74:23be10c32fa3 | 253 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 254 | |
IanBenzMaxim | 74:23be10c32fa3 | 255 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 256 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 257 | |
IanBenzMaxim | 74:23be10c32fa3 | 258 | // disable strong pullup |
IanBenzMaxim | 74:23be10c32fa3 | 259 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
IanBenzMaxim | 25:bdb1c5a53b58 | 260 | |
IanBenzMaxim | 74:23be10c32fa3 | 261 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 262 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 263 | |
IanBenzMaxim | 74:23be10c32fa3 | 264 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 265 | { |
IanBenzMaxim | 74:23be10c32fa3 | 266 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 267 | } |
IanBenzMaxim | 74:23be10c32fa3 | 268 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 269 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 270 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 271 | |
IanBenzMaxim | 74:23be10c32fa3 | 272 | OneWireSlave::CmdResult DS28E15_22_25::writeBlockProtection(const BlockProtection & protection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 273 | { |
IanBenzMaxim | 74:23be10c32fa3 | 274 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 275 | int cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 276 | |
IanBenzMaxim | 74:23be10c32fa3 | 277 | buf[cnt++] = CMD_WRITE_BLOCK_PROTECT; |
IanBenzMaxim | 25:bdb1c5a53b58 | 278 | |
IanBenzMaxim | 74:23be10c32fa3 | 279 | // compute parameter byte |
IanBenzMaxim | 74:23be10c32fa3 | 280 | buf[cnt++] = protection.statusByte(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 281 | |
IanBenzMaxim | 74:23be10c32fa3 | 282 | m_OW_master.OWWriteBlock(&buf[0], cnt); |
IanBenzMaxim | 25:bdb1c5a53b58 | 283 | |
IanBenzMaxim | 74:23be10c32fa3 | 284 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 285 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 286 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 287 | |
IanBenzMaxim | 74:23be10c32fa3 | 288 | // check CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 289 | if (OneWireMaster::calculateCRC16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 290 | { |
IanBenzMaxim | 74:23be10c32fa3 | 291 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 292 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 293 | |
IanBenzMaxim | 74:23be10c32fa3 | 294 | // sent release |
IanBenzMaxim | 74:23be10c32fa3 | 295 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 296 | |
IanBenzMaxim | 74:23be10c32fa3 | 297 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 298 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 299 | |
IanBenzMaxim | 74:23be10c32fa3 | 300 | // disable strong pullup |
IanBenzMaxim | 74:23be10c32fa3 | 301 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
IanBenzMaxim | 74:23be10c32fa3 | 302 | |
IanBenzMaxim | 74:23be10c32fa3 | 303 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 304 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 305 | |
IanBenzMaxim | 74:23be10c32fa3 | 306 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 307 | { |
IanBenzMaxim | 74:23be10c32fa3 | 308 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 309 | } |
IanBenzMaxim | 74:23be10c32fa3 | 310 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 311 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 312 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 313 | |
IanBenzMaxim | 34:11fffbe98ef9 | 314 | OneWireSlave::CmdResult DS28E15_22_25::readBlockProtection(unsigned int blockNum, BlockProtection & protection) |
IanBenzMaxim | 25:bdb1c5a53b58 | 315 | { |
IanBenzMaxim | 74:23be10c32fa3 | 316 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 317 | CmdResult result = readStatus(false, false, blockNum, &buf); |
IanBenzMaxim | 74:23be10c32fa3 | 318 | if (result == Success) |
IanBenzMaxim | 74:23be10c32fa3 | 319 | { |
IanBenzMaxim | 74:23be10c32fa3 | 320 | protection.setStatusByte(buf); |
IanBenzMaxim | 74:23be10c32fa3 | 321 | } |
IanBenzMaxim | 74:23be10c32fa3 | 322 | return result; |
IanBenzMaxim | 25:bdb1c5a53b58 | 323 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 324 | |
IanBenzMaxim | 74:23be10c32fa3 | 325 | template <DS28E15_22_25::ProtectionBlocks blocks> OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[blocks]) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 326 | { |
IanBenzMaxim | 74:23be10c32fa3 | 327 | uint8_t buf[blocks]; |
IanBenzMaxim | 74:23be10c32fa3 | 328 | CmdResult result = readStatus(false, true, 0, buf); |
IanBenzMaxim | 74:23be10c32fa3 | 329 | if (result == Success) |
IanBenzMaxim | 74:23be10c32fa3 | 330 | { |
IanBenzMaxim | 74:23be10c32fa3 | 331 | for (size_t i = 0; i < blocks; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 332 | { |
IanBenzMaxim | 74:23be10c32fa3 | 333 | protection[i].setStatusByte(buf[i]); |
IanBenzMaxim | 74:23be10c32fa3 | 334 | } |
IanBenzMaxim | 74:23be10c32fa3 | 335 | } |
IanBenzMaxim | 74:23be10c32fa3 | 336 | return result; |
IanBenzMaxim | 50:e967f9befbd0 | 337 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 338 | |
IanBenzMaxim | 74:23be10c32fa3 | 339 | OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[DS28E15_BLOCKS]) const |
IanBenzMaxim | 50:e967f9befbd0 | 340 | { |
IanBenzMaxim | 74:23be10c32fa3 | 341 | return readAllBlockProtection<DS28E15_BLOCKS>(protection); |
IanBenzMaxim | 50:e967f9befbd0 | 342 | } |
IanBenzMaxim | 50:e967f9befbd0 | 343 | |
IanBenzMaxim | 74:23be10c32fa3 | 344 | OneWireSlave::CmdResult DS28E15_22_25::readAllBlockProtection(BlockProtection(&protection)[DS28E25_BLOCKS]) const |
IanBenzMaxim | 50:e967f9befbd0 | 345 | { |
IanBenzMaxim | 74:23be10c32fa3 | 346 | return readAllBlockProtection<DS28E25_BLOCKS>(protection); |
IanBenzMaxim | 50:e967f9befbd0 | 347 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 348 | |
IanBenzMaxim | 51:a65f031e997b | 349 | OneWireSlave::CmdResult DS28E15_22_25::readPersonality(Personality & personality) const |
IanBenzMaxim | 50:e967f9befbd0 | 350 | { |
IanBenzMaxim | 74:23be10c32fa3 | 351 | return readStatus(true, false, 0, personality.bytes); |
IanBenzMaxim | 50:e967f9befbd0 | 352 | } |
IanBenzMaxim | 50:e967f9befbd0 | 353 | |
IanBenzMaxim | 73:2cecc1372acc | 354 | OneWireSlave::CmdResult DS28E15_22_25::readStatus(bool personality, bool allpages, unsigned int blockNum, uint8_t * rdbuf) const |
IanBenzMaxim | 50:e967f9befbd0 | 355 | { |
IanBenzMaxim | 74:23be10c32fa3 | 356 | const size_t crcLen = 4, ds28e22_25_pagesPerBlock = 2; |
IanBenzMaxim | 74:23be10c32fa3 | 357 | |
IanBenzMaxim | 74:23be10c32fa3 | 358 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 359 | size_t cnt = 0, offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 360 | |
IanBenzMaxim | 74:23be10c32fa3 | 361 | buf[cnt++] = CMD_READ_STATUS; |
IanBenzMaxim | 74:23be10c32fa3 | 362 | if (personality) |
IanBenzMaxim | 74:23be10c32fa3 | 363 | { |
IanBenzMaxim | 74:23be10c32fa3 | 364 | buf[cnt++] = 0xE0; |
IanBenzMaxim | 74:23be10c32fa3 | 365 | } |
IanBenzMaxim | 74:23be10c32fa3 | 366 | else if (allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 367 | { |
IanBenzMaxim | 74:23be10c32fa3 | 368 | buf[cnt++] = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 369 | } |
IanBenzMaxim | 74:23be10c32fa3 | 370 | else |
IanBenzMaxim | 74:23be10c32fa3 | 371 | { |
IanBenzMaxim | 74:23be10c32fa3 | 372 | // Convert to page number for DS28E22 and DS28E25 |
IanBenzMaxim | 74:23be10c32fa3 | 373 | buf[cnt] = blockNum; |
IanBenzMaxim | 74:23be10c32fa3 | 374 | if ((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY)) |
IanBenzMaxim | 74:23be10c32fa3 | 375 | { |
IanBenzMaxim | 74:23be10c32fa3 | 376 | buf[cnt] *= ds28e22_25_pagesPerBlock; |
IanBenzMaxim | 74:23be10c32fa3 | 377 | } |
IanBenzMaxim | 74:23be10c32fa3 | 378 | cnt++; |
IanBenzMaxim | 74:23be10c32fa3 | 379 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 380 | |
IanBenzMaxim | 74:23be10c32fa3 | 381 | // send the command |
IanBenzMaxim | 74:23be10c32fa3 | 382 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 50:e967f9befbd0 | 383 | |
IanBenzMaxim | 74:23be10c32fa3 | 384 | offset = cnt + 2; |
IanBenzMaxim | 50:e967f9befbd0 | 385 | |
IanBenzMaxim | 74:23be10c32fa3 | 386 | // Set data length |
IanBenzMaxim | 74:23be10c32fa3 | 387 | size_t rdnum; |
IanBenzMaxim | 74:23be10c32fa3 | 388 | if (personality) |
IanBenzMaxim | 74:23be10c32fa3 | 389 | { |
IanBenzMaxim | 74:23be10c32fa3 | 390 | rdnum = 4; |
IanBenzMaxim | 74:23be10c32fa3 | 391 | } |
IanBenzMaxim | 74:23be10c32fa3 | 392 | else if (!allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 393 | { |
IanBenzMaxim | 74:23be10c32fa3 | 394 | rdnum = 1; |
IanBenzMaxim | 74:23be10c32fa3 | 395 | } |
IanBenzMaxim | 74:23be10c32fa3 | 396 | else if ((romId.familyCode() == DS28E22_FAMILY) || (romId.familyCode() == DS28E25_FAMILY)) |
IanBenzMaxim | 74:23be10c32fa3 | 397 | { |
IanBenzMaxim | 74:23be10c32fa3 | 398 | rdnum = DS28E25_PAGES; // Need to read extra data on DS28E22 to get CRC16. |
IanBenzMaxim | 74:23be10c32fa3 | 399 | } |
IanBenzMaxim | 74:23be10c32fa3 | 400 | else // DS28E15 |
IanBenzMaxim | 74:23be10c32fa3 | 401 | { |
IanBenzMaxim | 74:23be10c32fa3 | 402 | rdnum = DS28E15_BLOCKS; |
IanBenzMaxim | 74:23be10c32fa3 | 403 | } |
IanBenzMaxim | 74:23be10c32fa3 | 404 | rdnum += crcLen; // Add in CRC length |
IanBenzMaxim | 50:e967f9befbd0 | 405 | |
IanBenzMaxim | 74:23be10c32fa3 | 406 | // Read the bytes |
IanBenzMaxim | 74:23be10c32fa3 | 407 | m_OW_master.OWReadBlock(&buf[cnt], rdnum); |
IanBenzMaxim | 74:23be10c32fa3 | 408 | cnt += rdnum; |
IanBenzMaxim | 50:e967f9befbd0 | 409 | |
IanBenzMaxim | 74:23be10c32fa3 | 410 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 411 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 412 | { |
IanBenzMaxim | 74:23be10c32fa3 | 413 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 414 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 415 | |
IanBenzMaxim | 74:23be10c32fa3 | 416 | if (personality || allpages) |
IanBenzMaxim | 74:23be10c32fa3 | 417 | { |
IanBenzMaxim | 74:23be10c32fa3 | 418 | // check the second CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 419 | if (OneWireMaster::calculateCRC16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 420 | { |
IanBenzMaxim | 74:23be10c32fa3 | 421 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 422 | } |
IanBenzMaxim | 74:23be10c32fa3 | 423 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 424 | |
IanBenzMaxim | 74:23be10c32fa3 | 425 | // copy the data to the read buffer |
IanBenzMaxim | 74:23be10c32fa3 | 426 | rdnum -= crcLen; |
IanBenzMaxim | 74:23be10c32fa3 | 427 | if (allpages && ((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY))) |
IanBenzMaxim | 50:e967f9befbd0 | 428 | { |
IanBenzMaxim | 74:23be10c32fa3 | 429 | if (romId.familyCode() == DS28E22_FAMILY) |
IanBenzMaxim | 74:23be10c32fa3 | 430 | { |
IanBenzMaxim | 74:23be10c32fa3 | 431 | rdnum -= (DS28E25_PAGES - DS28E22_PAGES); |
IanBenzMaxim | 74:23be10c32fa3 | 432 | } |
IanBenzMaxim | 74:23be10c32fa3 | 433 | |
IanBenzMaxim | 74:23be10c32fa3 | 434 | for (size_t i = 0; i < (rdnum / ds28e22_25_pagesPerBlock); i++) |
IanBenzMaxim | 74:23be10c32fa3 | 435 | { |
IanBenzMaxim | 74:23be10c32fa3 | 436 | rdbuf[i] = (buf[offset + (i * ds28e22_25_pagesPerBlock)] & 0xF0); // Upper nibble |
IanBenzMaxim | 74:23be10c32fa3 | 437 | rdbuf[i] |= ((buf[offset + (i * ds28e22_25_pagesPerBlock)] & 0x0F) / ds28e22_25_pagesPerBlock); // Lower nibble |
IanBenzMaxim | 74:23be10c32fa3 | 438 | } |
IanBenzMaxim | 50:e967f9befbd0 | 439 | } |
IanBenzMaxim | 74:23be10c32fa3 | 440 | else |
IanBenzMaxim | 74:23be10c32fa3 | 441 | { |
IanBenzMaxim | 74:23be10c32fa3 | 442 | std::memcpy(rdbuf, &buf[offset], rdnum); |
IanBenzMaxim | 74:23be10c32fa3 | 443 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 444 | |
IanBenzMaxim | 74:23be10c32fa3 | 445 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 446 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 447 | |
IanBenzMaxim | 73:2cecc1372acc | 448 | 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 | 449 | { |
IanBenzMaxim | 74:23be10c32fa3 | 450 | ISha256MacCoproc::AuthMacData authMacData; |
IanBenzMaxim | 49:36954b62f503 | 451 | |
IanBenzMaxim | 74:23be10c32fa3 | 452 | // insert ROM number or FF |
IanBenzMaxim | 74:23be10c32fa3 | 453 | std::memcpy(authMacData, romId, RomId::byteLen); |
IanBenzMaxim | 49:36954b62f503 | 454 | |
IanBenzMaxim | 74:23be10c32fa3 | 455 | authMacData[10] = pageNum; |
IanBenzMaxim | 25:bdb1c5a53b58 | 456 | |
IanBenzMaxim | 74:23be10c32fa3 | 457 | authMacData[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 458 | authMacData[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 459 | |
IanBenzMaxim | 74:23be10c32fa3 | 460 | authMacData[11] = 0x00; |
IanBenzMaxim | 25:bdb1c5a53b58 | 461 | |
IanBenzMaxim | 74:23be10c32fa3 | 462 | return MacCoproc.computeAuthMac(ISha256MacCoproc::DevicePage(pageData), challenge, authMacData, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 463 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 464 | |
IanBenzMaxim | 73:2cecc1372acc | 465 | 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 | 466 | { |
IanBenzMaxim | 74:23be10c32fa3 | 467 | RomId romId; |
IanBenzMaxim | 74:23be10c32fa3 | 468 | std::memset(romId, 0xFF, RomId::byteLen); |
IanBenzMaxim | 74:23be10c32fa3 | 469 | return computeAuthMac(MacCoproc, pageData, pageNum, challenge, romId, manId, mac); |
IanBenzMaxim | 49:36954b62f503 | 470 | } |
IanBenzMaxim | 49:36954b62f503 | 471 | |
IanBenzMaxim | 74:23be10c32fa3 | 472 | OneWireSlave::CmdResult DS28E15_22_25::computeReadPageMac(unsigned int page_num, bool anon, Mac & mac) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 473 | { |
IanBenzMaxim | 74:23be10c32fa3 | 474 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 475 | int cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 476 | |
IanBenzMaxim | 74:23be10c32fa3 | 477 | buf[cnt++] = CMD_COMPUTE_PAGEMAC; |
IanBenzMaxim | 74:23be10c32fa3 | 478 | buf[cnt++] = ((anon) ? 0xE0 : 0x00) | page_num; |
IanBenzMaxim | 74:23be10c32fa3 | 479 | |
IanBenzMaxim | 74:23be10c32fa3 | 480 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 481 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 482 | |
IanBenzMaxim | 74:23be10c32fa3 | 483 | // read first CRC byte |
IanBenzMaxim | 74:23be10c32fa3 | 484 | m_OW_master.OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 485 | |
IanBenzMaxim | 74:23be10c32fa3 | 486 | // read the last CRC and enable |
IanBenzMaxim | 74:23be10c32fa3 | 487 | m_OW_master.OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 488 | |
IanBenzMaxim | 74:23be10c32fa3 | 489 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 490 | wait_ms(shaComputationDelayMs * 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 491 | |
IanBenzMaxim | 74:23be10c32fa3 | 492 | // disable strong pullup |
IanBenzMaxim | 74:23be10c32fa3 | 493 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
IanBenzMaxim | 25:bdb1c5a53b58 | 494 | |
IanBenzMaxim | 74:23be10c32fa3 | 495 | // check CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 496 | if (OneWireMaster::calculateCRC16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 497 | { |
IanBenzMaxim | 74:23be10c32fa3 | 498 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 499 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 500 | |
IanBenzMaxim | 74:23be10c32fa3 | 501 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 502 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 74:23be10c32fa3 | 503 | if (cs != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 504 | { |
IanBenzMaxim | 74:23be10c32fa3 | 505 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 506 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 507 | |
IanBenzMaxim | 74:23be10c32fa3 | 508 | // read the MAC and CRC |
IanBenzMaxim | 74:23be10c32fa3 | 509 | m_OW_master.OWReadBlock(&buf[0], (Mac::length + 2)); |
IanBenzMaxim | 25:bdb1c5a53b58 | 510 | |
IanBenzMaxim | 74:23be10c32fa3 | 511 | // check CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 512 | if (OneWireMaster::calculateCRC16(buf, 0, (Mac::length + 2)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 513 | { |
IanBenzMaxim | 74:23be10c32fa3 | 514 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 515 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 516 | |
IanBenzMaxim | 74:23be10c32fa3 | 517 | // copy MAC to return buffer |
IanBenzMaxim | 74:23be10c32fa3 | 518 | std::memcpy(mac, buf, Mac::length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 519 | |
IanBenzMaxim | 74:23be10c32fa3 | 520 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 521 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 522 | |
IanBenzMaxim | 74:23be10c32fa3 | 523 | OneWireSlave::CmdResult DS28E15_22_25::computeSecret(unsigned int page_num, bool lock) |
IanBenzMaxim | 25:bdb1c5a53b58 | 524 | { |
IanBenzMaxim | 74:23be10c32fa3 | 525 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 526 | int cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 527 | |
IanBenzMaxim | 74:23be10c32fa3 | 528 | buf[cnt++] = CMD_COMPUTE_LOCK_SECRET; |
IanBenzMaxim | 74:23be10c32fa3 | 529 | buf[cnt++] = (lock) ? (0xE0 | page_num) : page_num; // lock flag |
IanBenzMaxim | 25:bdb1c5a53b58 | 530 | |
IanBenzMaxim | 74:23be10c32fa3 | 531 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 532 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 533 | |
IanBenzMaxim | 74:23be10c32fa3 | 534 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 535 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 536 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 537 | |
IanBenzMaxim | 74:23be10c32fa3 | 538 | // check CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 539 | if (OneWireMaster::calculateCRC16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 540 | { |
IanBenzMaxim | 74:23be10c32fa3 | 541 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 542 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 543 | |
IanBenzMaxim | 74:23be10c32fa3 | 544 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 545 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 546 | |
IanBenzMaxim | 74:23be10c32fa3 | 547 | // now wait for the MAC computations and secret programming. |
IanBenzMaxim | 74:23be10c32fa3 | 548 | wait_ms(shaComputationDelayMs * 2 + secretEepromWriteDelayMs()); |
IanBenzMaxim | 25:bdb1c5a53b58 | 549 | |
IanBenzMaxim | 74:23be10c32fa3 | 550 | // disable strong pullup |
IanBenzMaxim | 74:23be10c32fa3 | 551 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
IanBenzMaxim | 74:23be10c32fa3 | 552 | |
IanBenzMaxim | 74:23be10c32fa3 | 553 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 554 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 555 | |
IanBenzMaxim | 74:23be10c32fa3 | 556 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 557 | { |
IanBenzMaxim | 74:23be10c32fa3 | 558 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 559 | } |
IanBenzMaxim | 74:23be10c32fa3 | 560 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 561 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 562 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 563 | |
IanBenzMaxim | 34:11fffbe98ef9 | 564 | OneWireSlave::CmdResult DS28E15_22_25::writeScratchpad(const Scratchpad & data) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 565 | { |
IanBenzMaxim | 74:23be10c32fa3 | 566 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 567 | int cnt = 0, offset; |
IanBenzMaxim | 25:bdb1c5a53b58 | 568 | |
IanBenzMaxim | 74:23be10c32fa3 | 569 | buf[cnt++] = CMD_READ_WRITE_SCRATCHPAD; |
IanBenzMaxim | 74:23be10c32fa3 | 570 | if ((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY)) |
IanBenzMaxim | 74:23be10c32fa3 | 571 | { |
IanBenzMaxim | 74:23be10c32fa3 | 572 | buf[cnt++] = 0x20; |
IanBenzMaxim | 74:23be10c32fa3 | 573 | } |
IanBenzMaxim | 74:23be10c32fa3 | 574 | else |
IanBenzMaxim | 74:23be10c32fa3 | 575 | { |
IanBenzMaxim | 74:23be10c32fa3 | 576 | buf[cnt++] = 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 577 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 578 | |
IanBenzMaxim | 74:23be10c32fa3 | 579 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 580 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 581 | |
IanBenzMaxim | 74:23be10c32fa3 | 582 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 583 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 584 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 585 | |
IanBenzMaxim | 74:23be10c32fa3 | 586 | offset = cnt; |
IanBenzMaxim | 25:bdb1c5a53b58 | 587 | |
IanBenzMaxim | 74:23be10c32fa3 | 588 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 589 | std::memcpy(&buf[cnt], data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 590 | cnt += data.length; |
IanBenzMaxim | 25:bdb1c5a53b58 | 591 | |
IanBenzMaxim | 74:23be10c32fa3 | 592 | // Send the data |
IanBenzMaxim | 74:23be10c32fa3 | 593 | m_OW_master.OWWriteBlock(data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 594 | |
IanBenzMaxim | 74:23be10c32fa3 | 595 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 596 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 597 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 598 | |
IanBenzMaxim | 74:23be10c32fa3 | 599 | // check first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 600 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 601 | { |
IanBenzMaxim | 74:23be10c32fa3 | 602 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 603 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 604 | |
IanBenzMaxim | 74:23be10c32fa3 | 605 | // check the second CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 606 | if (OneWireMaster::calculateCRC16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 607 | { |
IanBenzMaxim | 74:23be10c32fa3 | 608 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 609 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 610 | |
IanBenzMaxim | 74:23be10c32fa3 | 611 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 612 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 613 | |
IanBenzMaxim | 49:36954b62f503 | 614 | OneWireSlave::CmdResult DS28E15_22_25::readScratchpad(Scratchpad & data) const |
IanBenzMaxim | 49:36954b62f503 | 615 | { |
IanBenzMaxim | 74:23be10c32fa3 | 616 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 617 | int cnt = 0, offset; |
IanBenzMaxim | 49:36954b62f503 | 618 | |
IanBenzMaxim | 74:23be10c32fa3 | 619 | buf[cnt++] = CMD_READ_WRITE_SCRATCHPAD; |
IanBenzMaxim | 74:23be10c32fa3 | 620 | if ((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY)) |
IanBenzMaxim | 74:23be10c32fa3 | 621 | { |
IanBenzMaxim | 74:23be10c32fa3 | 622 | buf[cnt++] = 0x2F; |
IanBenzMaxim | 74:23be10c32fa3 | 623 | } |
IanBenzMaxim | 74:23be10c32fa3 | 624 | else |
IanBenzMaxim | 74:23be10c32fa3 | 625 | { |
IanBenzMaxim | 74:23be10c32fa3 | 626 | buf[cnt++] = 0x0F; |
IanBenzMaxim | 74:23be10c32fa3 | 627 | } |
IanBenzMaxim | 49:36954b62f503 | 628 | |
IanBenzMaxim | 74:23be10c32fa3 | 629 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 630 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 49:36954b62f503 | 631 | |
IanBenzMaxim | 74:23be10c32fa3 | 632 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 633 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 634 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 635 | |
IanBenzMaxim | 74:23be10c32fa3 | 636 | offset = cnt; |
IanBenzMaxim | 49:36954b62f503 | 637 | |
IanBenzMaxim | 74:23be10c32fa3 | 638 | // Receive the data |
IanBenzMaxim | 74:23be10c32fa3 | 639 | m_OW_master.OWReadBlock(&buf[cnt], data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 640 | cnt += data.length; |
IanBenzMaxim | 74:23be10c32fa3 | 641 | |
IanBenzMaxim | 74:23be10c32fa3 | 642 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 643 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 644 | cnt += 2; |
IanBenzMaxim | 49:36954b62f503 | 645 | |
IanBenzMaxim | 74:23be10c32fa3 | 646 | // check first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 647 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 648 | { |
IanBenzMaxim | 74:23be10c32fa3 | 649 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 650 | } |
IanBenzMaxim | 49:36954b62f503 | 651 | |
IanBenzMaxim | 74:23be10c32fa3 | 652 | // check the second CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 653 | if (OneWireMaster::calculateCRC16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 654 | { |
IanBenzMaxim | 74:23be10c32fa3 | 655 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 656 | } |
IanBenzMaxim | 49:36954b62f503 | 657 | |
IanBenzMaxim | 74:23be10c32fa3 | 658 | // Copy to output |
IanBenzMaxim | 74:23be10c32fa3 | 659 | std::memcpy(data, &buf[offset], data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 660 | |
IanBenzMaxim | 74:23be10c32fa3 | 661 | return Success; |
IanBenzMaxim | 49:36954b62f503 | 662 | } |
IanBenzMaxim | 49:36954b62f503 | 663 | |
IanBenzMaxim | 34:11fffbe98ef9 | 664 | OneWireSlave::CmdResult DS28E15_22_25::loadSecret(bool lock) |
IanBenzMaxim | 25:bdb1c5a53b58 | 665 | { |
IanBenzMaxim | 74:23be10c32fa3 | 666 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 667 | int cnt = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 668 | |
IanBenzMaxim | 74:23be10c32fa3 | 669 | buf[cnt++] = CMD_LOAD_LOCK_SECRET; |
IanBenzMaxim | 74:23be10c32fa3 | 670 | buf[cnt++] = (lock) ? 0xE0 : 0x00; // lock flag |
IanBenzMaxim | 74:23be10c32fa3 | 671 | |
IanBenzMaxim | 74:23be10c32fa3 | 672 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 673 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 674 | |
IanBenzMaxim | 74:23be10c32fa3 | 675 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 676 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 677 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 678 | |
IanBenzMaxim | 74:23be10c32fa3 | 679 | // check CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 680 | if (OneWireMaster::calculateCRC16(buf, 0, cnt) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 681 | { |
IanBenzMaxim | 74:23be10c32fa3 | 682 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 683 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 684 | |
IanBenzMaxim | 74:23be10c32fa3 | 685 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 686 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 687 | |
IanBenzMaxim | 74:23be10c32fa3 | 688 | // now wait for the secret programming. |
IanBenzMaxim | 74:23be10c32fa3 | 689 | wait_ms(secretEepromWriteDelayMs()); |
IanBenzMaxim | 74:23be10c32fa3 | 690 | |
IanBenzMaxim | 74:23be10c32fa3 | 691 | // disable strong pullup |
IanBenzMaxim | 74:23be10c32fa3 | 692 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
IanBenzMaxim | 25:bdb1c5a53b58 | 693 | |
IanBenzMaxim | 74:23be10c32fa3 | 694 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 695 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 696 | |
IanBenzMaxim | 74:23be10c32fa3 | 697 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 698 | { |
IanBenzMaxim | 74:23be10c32fa3 | 699 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 700 | } |
IanBenzMaxim | 74:23be10c32fa3 | 701 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 702 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 703 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 704 | |
IanBenzMaxim | 74:23be10c32fa3 | 705 | OneWireSlave::CmdResult DS28E15_22_25::readPage(unsigned int page, Page & rdbuf, bool continuing) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 706 | { |
IanBenzMaxim | 74:23be10c32fa3 | 707 | uint8_t buf[256]; |
IanBenzMaxim | 74:23be10c32fa3 | 708 | int cnt, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 709 | |
IanBenzMaxim | 74:23be10c32fa3 | 710 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 711 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 712 | |
IanBenzMaxim | 74:23be10c32fa3 | 713 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 714 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 715 | { |
IanBenzMaxim | 74:23be10c32fa3 | 716 | buf[cnt++] = CMD_READ_MEMORY; |
IanBenzMaxim | 74:23be10c32fa3 | 717 | buf[cnt++] = page; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 718 | |
IanBenzMaxim | 74:23be10c32fa3 | 719 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 720 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 721 | |
IanBenzMaxim | 74:23be10c32fa3 | 722 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 723 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 724 | cnt += 2; |
IanBenzMaxim | 74:23be10c32fa3 | 725 | |
IanBenzMaxim | 74:23be10c32fa3 | 726 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 727 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 728 | |
IanBenzMaxim | 74:23be10c32fa3 | 729 | // read data and CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 730 | m_OW_master.OWReadBlock(&buf[cnt], (rdbuf.length + 2)); |
IanBenzMaxim | 74:23be10c32fa3 | 731 | cnt += 34; |
IanBenzMaxim | 25:bdb1c5a53b58 | 732 | |
IanBenzMaxim | 74:23be10c32fa3 | 733 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 734 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 735 | { |
IanBenzMaxim | 74:23be10c32fa3 | 736 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 737 | { |
IanBenzMaxim | 74:23be10c32fa3 | 738 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 739 | } |
IanBenzMaxim | 74:23be10c32fa3 | 740 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 741 | |
IanBenzMaxim | 74:23be10c32fa3 | 742 | // check the second CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 743 | if (OneWireMaster::calculateCRC16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 744 | { |
IanBenzMaxim | 74:23be10c32fa3 | 745 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 746 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 747 | |
IanBenzMaxim | 74:23be10c32fa3 | 748 | // copy the data to the read buffer |
IanBenzMaxim | 74:23be10c32fa3 | 749 | std::memcpy(rdbuf, &buf[offset], rdbuf.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 750 | |
IanBenzMaxim | 74:23be10c32fa3 | 751 | return Success; |
IanBenzMaxim | 25:bdb1c5a53b58 | 752 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 753 | |
IanBenzMaxim | 74:23be10c32fa3 | 754 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthSegmentMac(unsigned int pageNum, unsigned int segmentNum, const Segment & newData, const Mac & mac, bool continuing) |
IanBenzMaxim | 25:bdb1c5a53b58 | 755 | { |
IanBenzMaxim | 74:23be10c32fa3 | 756 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 757 | int cnt, i, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 758 | |
IanBenzMaxim | 74:23be10c32fa3 | 759 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 760 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 761 | |
IanBenzMaxim | 74:23be10c32fa3 | 762 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 763 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 764 | { |
IanBenzMaxim | 74:23be10c32fa3 | 765 | buf[cnt++] = CMD_WRITE_AUTH_MEMORY; |
IanBenzMaxim | 74:23be10c32fa3 | 766 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 767 | |
IanBenzMaxim | 74:23be10c32fa3 | 768 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 769 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 770 | |
IanBenzMaxim | 74:23be10c32fa3 | 771 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 772 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 773 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 774 | |
IanBenzMaxim | 74:23be10c32fa3 | 775 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 776 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 777 | |
IanBenzMaxim | 74:23be10c32fa3 | 778 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 779 | for (i = 0; i < newData.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 780 | { |
IanBenzMaxim | 74:23be10c32fa3 | 781 | buf[cnt++] = newData[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 782 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 783 | |
IanBenzMaxim | 74:23be10c32fa3 | 784 | // Send data |
IanBenzMaxim | 74:23be10c32fa3 | 785 | m_OW_master.OWWriteBlock(newData, newData.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 786 | |
IanBenzMaxim | 74:23be10c32fa3 | 787 | // read first CRC byte |
IanBenzMaxim | 74:23be10c32fa3 | 788 | m_OW_master.OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 789 | |
IanBenzMaxim | 74:23be10c32fa3 | 790 | // read the last CRC and enable power |
IanBenzMaxim | 74:23be10c32fa3 | 791 | m_OW_master.OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 792 | |
IanBenzMaxim | 74:23be10c32fa3 | 793 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 794 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 795 | |
IanBenzMaxim | 74:23be10c32fa3 | 796 | // disable strong pullup |
IanBenzMaxim | 74:23be10c32fa3 | 797 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
IanBenzMaxim | 25:bdb1c5a53b58 | 798 | |
IanBenzMaxim | 74:23be10c32fa3 | 799 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 800 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 801 | { |
IanBenzMaxim | 74:23be10c32fa3 | 802 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 803 | { |
IanBenzMaxim | 74:23be10c32fa3 | 804 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 805 | } |
IanBenzMaxim | 74:23be10c32fa3 | 806 | } |
IanBenzMaxim | 74:23be10c32fa3 | 807 | |
IanBenzMaxim | 74:23be10c32fa3 | 808 | // check the second CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 809 | unsigned short CRC16 = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 810 | |
IanBenzMaxim | 74:23be10c32fa3 | 811 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 812 | if ((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY)) |
IanBenzMaxim | 74:23be10c32fa3 | 813 | { |
IanBenzMaxim | 74:23be10c32fa3 | 814 | if (continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 815 | { |
IanBenzMaxim | 74:23be10c32fa3 | 816 | CRC16 = OneWireMaster::calculateCRC16(CRC16, 0xAA); |
IanBenzMaxim | 74:23be10c32fa3 | 817 | } |
IanBenzMaxim | 74:23be10c32fa3 | 818 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 819 | |
IanBenzMaxim | 74:23be10c32fa3 | 820 | CRC16 = OneWireMaster::calculateCRC16(buf, offset, (cnt - offset), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 821 | |
IanBenzMaxim | 74:23be10c32fa3 | 822 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 823 | { |
IanBenzMaxim | 74:23be10c32fa3 | 824 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 825 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 826 | |
IanBenzMaxim | 74:23be10c32fa3 | 827 | // transmit MAC as a block |
IanBenzMaxim | 74:23be10c32fa3 | 828 | m_OW_master.OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 829 | |
IanBenzMaxim | 74:23be10c32fa3 | 830 | // calculate CRC on MAC |
IanBenzMaxim | 74:23be10c32fa3 | 831 | CRC16 = OneWireMaster::calculateCRC16(mac, 0, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 832 | |
IanBenzMaxim | 74:23be10c32fa3 | 833 | // append read of CRC16 and CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 834 | m_OW_master.OWReadBlock(&buf[0], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 835 | cnt = 3; |
IanBenzMaxim | 74:23be10c32fa3 | 836 | |
IanBenzMaxim | 74:23be10c32fa3 | 837 | // ckeck CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 838 | CRC16 = OneWireMaster::calculateCRC16(buf, 0, (cnt - 1), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 839 | |
IanBenzMaxim | 74:23be10c32fa3 | 840 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 841 | { |
IanBenzMaxim | 74:23be10c32fa3 | 842 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 843 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 844 | |
IanBenzMaxim | 74:23be10c32fa3 | 845 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 846 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 847 | { |
IanBenzMaxim | 74:23be10c32fa3 | 848 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 849 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 850 | |
IanBenzMaxim | 74:23be10c32fa3 | 851 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 852 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 853 | |
IanBenzMaxim | 74:23be10c32fa3 | 854 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 855 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 856 | |
IanBenzMaxim | 74:23be10c32fa3 | 857 | // disable strong pullup |
IanBenzMaxim | 74:23be10c32fa3 | 858 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
IanBenzMaxim | 25:bdb1c5a53b58 | 859 | |
IanBenzMaxim | 74:23be10c32fa3 | 860 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 861 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 862 | |
IanBenzMaxim | 74:23be10c32fa3 | 863 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 864 | { |
IanBenzMaxim | 74:23be10c32fa3 | 865 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 866 | } |
IanBenzMaxim | 74:23be10c32fa3 | 867 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 868 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 869 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 870 | |
IanBenzMaxim | 74:23be10c32fa3 | 871 | 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 | 872 | { |
IanBenzMaxim | 74:23be10c32fa3 | 873 | ISha256MacCoproc::WriteMacData MT; |
IanBenzMaxim | 25:bdb1c5a53b58 | 874 | |
IanBenzMaxim | 74:23be10c32fa3 | 875 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 876 | std::memcpy(&MT[0], romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 877 | |
IanBenzMaxim | 74:23be10c32fa3 | 878 | MT[11] = segmentNum; |
IanBenzMaxim | 74:23be10c32fa3 | 879 | MT[10] = pageNum; |
IanBenzMaxim | 74:23be10c32fa3 | 880 | MT[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 881 | MT[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 882 | |
IanBenzMaxim | 74:23be10c32fa3 | 883 | // insert old data |
IanBenzMaxim | 74:23be10c32fa3 | 884 | std::memcpy(&MT[12], oldData, Segment::length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 885 | |
IanBenzMaxim | 74:23be10c32fa3 | 886 | // insert new data |
IanBenzMaxim | 74:23be10c32fa3 | 887 | std::memcpy(&MT[16], newData, Segment::length); |
IanBenzMaxim | 74:23be10c32fa3 | 888 | |
IanBenzMaxim | 74:23be10c32fa3 | 889 | return MacCoproc.computeWriteMac(MT, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 890 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 891 | |
IanBenzMaxim | 73:2cecc1372acc | 892 | 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 | 893 | { |
IanBenzMaxim | 74:23be10c32fa3 | 894 | ISha256MacCoproc::WriteMacData MT; |
IanBenzMaxim | 74:23be10c32fa3 | 895 | |
IanBenzMaxim | 74:23be10c32fa3 | 896 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 897 | std::memcpy(MT, romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 898 | |
IanBenzMaxim | 74:23be10c32fa3 | 899 | // instert block and page |
IanBenzMaxim | 74:23be10c32fa3 | 900 | MT[11] = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 901 | MT[10] = newProtection.blockNum(); |
IanBenzMaxim | 25:bdb1c5a53b58 | 902 | |
IanBenzMaxim | 74:23be10c32fa3 | 903 | MT[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 904 | MT[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 905 | |
IanBenzMaxim | 74:23be10c32fa3 | 906 | // old data |
IanBenzMaxim | 74:23be10c32fa3 | 907 | MT[12] = oldProtection.authProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 908 | MT[13] = oldProtection.eepromEmulation() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 909 | MT[14] = oldProtection.writeProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 910 | MT[15] = oldProtection.readProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 911 | // new data |
IanBenzMaxim | 74:23be10c32fa3 | 912 | MT[16] = newProtection.authProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 913 | MT[17] = newProtection.eepromEmulation() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 914 | MT[18] = newProtection.writeProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 915 | MT[19] = newProtection.readProtection() ? 0x01 : 0x00; |
IanBenzMaxim | 25:bdb1c5a53b58 | 916 | |
IanBenzMaxim | 74:23be10c32fa3 | 917 | // compute the mac |
IanBenzMaxim | 74:23be10c32fa3 | 918 | return MacCoproc.computeWriteMac(MT, mac); |
IanBenzMaxim | 25:bdb1c5a53b58 | 919 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 920 | |
IanBenzMaxim | 73:2cecc1372acc | 921 | 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 | 922 | { |
IanBenzMaxim | 74:23be10c32fa3 | 923 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 924 | int cnt, offset; |
IanBenzMaxim | 74:23be10c32fa3 | 925 | |
IanBenzMaxim | 74:23be10c32fa3 | 926 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 927 | offset = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 928 | |
IanBenzMaxim | 74:23be10c32fa3 | 929 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 930 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 931 | { |
IanBenzMaxim | 74:23be10c32fa3 | 932 | buf[cnt++] = CMD_WRITE_AUTH_MEMORY; |
IanBenzMaxim | 74:23be10c32fa3 | 933 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
IanBenzMaxim | 74:23be10c32fa3 | 934 | |
IanBenzMaxim | 74:23be10c32fa3 | 935 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 936 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 937 | |
IanBenzMaxim | 74:23be10c32fa3 | 938 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 939 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 940 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 941 | |
IanBenzMaxim | 74:23be10c32fa3 | 942 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 943 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 944 | |
IanBenzMaxim | 74:23be10c32fa3 | 945 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 946 | for (size_t i = 0; i < newData.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 947 | { |
IanBenzMaxim | 74:23be10c32fa3 | 948 | buf[cnt++] = newData[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 949 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 950 | |
IanBenzMaxim | 74:23be10c32fa3 | 951 | // Send data |
IanBenzMaxim | 74:23be10c32fa3 | 952 | m_OW_master.OWWriteBlock(newData, newData.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 953 | |
IanBenzMaxim | 74:23be10c32fa3 | 954 | // read first CRC byte |
IanBenzMaxim | 74:23be10c32fa3 | 955 | m_OW_master.OWReadByte(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 956 | |
IanBenzMaxim | 74:23be10c32fa3 | 957 | // read the last CRC and enable power |
IanBenzMaxim | 74:23be10c32fa3 | 958 | m_OW_master.OWReadBytePower(buf[cnt++]); |
IanBenzMaxim | 25:bdb1c5a53b58 | 959 | |
IanBenzMaxim | 74:23be10c32fa3 | 960 | // now wait for the MAC computation. |
IanBenzMaxim | 74:23be10c32fa3 | 961 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 962 | |
IanBenzMaxim | 74:23be10c32fa3 | 963 | // disable strong pullup |
IanBenzMaxim | 74:23be10c32fa3 | 964 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
IanBenzMaxim | 25:bdb1c5a53b58 | 965 | |
IanBenzMaxim | 74:23be10c32fa3 | 966 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 967 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 968 | { |
IanBenzMaxim | 74:23be10c32fa3 | 969 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 970 | { |
IanBenzMaxim | 74:23be10c32fa3 | 971 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 972 | } |
IanBenzMaxim | 74:23be10c32fa3 | 973 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 974 | |
IanBenzMaxim | 74:23be10c32fa3 | 975 | // check the second CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 976 | unsigned short CRC16 = 0; |
IanBenzMaxim | 25:bdb1c5a53b58 | 977 | |
IanBenzMaxim | 74:23be10c32fa3 | 978 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 979 | if ((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY)) |
IanBenzMaxim | 74:23be10c32fa3 | 980 | { |
IanBenzMaxim | 74:23be10c32fa3 | 981 | if (continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 982 | CRC16 = OneWireMaster::calculateCRC16(CRC16, 0xAA); |
IanBenzMaxim | 74:23be10c32fa3 | 983 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 984 | |
IanBenzMaxim | 74:23be10c32fa3 | 985 | CRC16 = OneWireMaster::calculateCRC16(buf, offset, (cnt - offset), CRC16); |
IanBenzMaxim | 74:23be10c32fa3 | 986 | |
IanBenzMaxim | 74:23be10c32fa3 | 987 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 988 | { |
IanBenzMaxim | 74:23be10c32fa3 | 989 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 990 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 991 | |
IanBenzMaxim | 25:bdb1c5a53b58 | 992 | // compute the mac |
IanBenzMaxim | 74:23be10c32fa3 | 993 | ISha256MacCoproc::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 994 | Mac mac; |
IanBenzMaxim | 74:23be10c32fa3 | 995 | result = computeSegmentWriteMac(MacCoproc, pageNum, segmentNum, newData, oldData, romId, manId, mac); |
IanBenzMaxim | 74:23be10c32fa3 | 996 | if (result != ISha256MacCoproc::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 997 | { |
IanBenzMaxim | 74:23be10c32fa3 | 998 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 999 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1000 | |
IanBenzMaxim | 74:23be10c32fa3 | 1001 | // transmit MAC as a block |
IanBenzMaxim | 74:23be10c32fa3 | 1002 | m_OW_master.OWWriteBlock(mac, mac.length); |
IanBenzMaxim | 74:23be10c32fa3 | 1003 | |
IanBenzMaxim | 74:23be10c32fa3 | 1004 | // calculate CRC on MAC |
IanBenzMaxim | 74:23be10c32fa3 | 1005 | CRC16 = OneWireMaster::calculateCRC16(mac, 0, mac.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1006 | |
IanBenzMaxim | 74:23be10c32fa3 | 1007 | // append read of CRC16 and CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 1008 | m_OW_master.OWReadBlock(&buf[0], 3); |
IanBenzMaxim | 74:23be10c32fa3 | 1009 | cnt = 3; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1010 | |
IanBenzMaxim | 74:23be10c32fa3 | 1011 | // ckeck CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 1012 | CRC16 = OneWireMaster::calculateCRC16(buf, 0, (cnt - 1), CRC16); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1013 | |
IanBenzMaxim | 74:23be10c32fa3 | 1014 | if (CRC16 != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1015 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1016 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 1017 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1018 | |
IanBenzMaxim | 74:23be10c32fa3 | 1019 | // check CS |
IanBenzMaxim | 74:23be10c32fa3 | 1020 | if (buf[cnt - 1] != 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1021 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1022 | return OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 1023 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1024 | |
IanBenzMaxim | 74:23be10c32fa3 | 1025 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 1026 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1027 | |
IanBenzMaxim | 74:23be10c32fa3 | 1028 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 1029 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1030 | |
IanBenzMaxim | 74:23be10c32fa3 | 1031 | // disable strong pullup |
IanBenzMaxim | 74:23be10c32fa3 | 1032 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1033 | |
IanBenzMaxim | 74:23be10c32fa3 | 1034 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 1035 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1036 | |
IanBenzMaxim | 74:23be10c32fa3 | 1037 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1038 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1039 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 1040 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1041 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 1042 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1043 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1044 | |
IanBenzMaxim | 50:e967f9befbd0 | 1045 | OneWireSlave::CmdResult DS28E15_22_25::readSegment(unsigned int page, unsigned int segment, Segment & data, bool continuing) const |
IanBenzMaxim | 25:bdb1c5a53b58 | 1046 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1047 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 1048 | uint8_t buf[2]; |
IanBenzMaxim | 74:23be10c32fa3 | 1049 | |
IanBenzMaxim | 74:23be10c32fa3 | 1050 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1051 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1052 | buf[0] = CMD_READ_MEMORY; |
IanBenzMaxim | 74:23be10c32fa3 | 1053 | buf[1] = (segment << 5) | page; |
IanBenzMaxim | 74:23be10c32fa3 | 1054 | |
IanBenzMaxim | 74:23be10c32fa3 | 1055 | // Transmit command |
IanBenzMaxim | 74:23be10c32fa3 | 1056 | m_OW_master.OWWriteBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1057 | |
IanBenzMaxim | 74:23be10c32fa3 | 1058 | // Receive CRC |
IanBenzMaxim | 74:23be10c32fa3 | 1059 | result = m_OW_master.OWReadBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1060 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1061 | else if (segment == 0) |
IanBenzMaxim | 74:23be10c32fa3 | 1062 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1063 | // Receive CRC from previous read |
IanBenzMaxim | 74:23be10c32fa3 | 1064 | result = m_OW_master.OWReadBlock(buf, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1065 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1066 | |
IanBenzMaxim | 74:23be10c32fa3 | 1067 | // Receive data |
IanBenzMaxim | 74:23be10c32fa3 | 1068 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 1069 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1070 | result = m_OW_master.OWReadBlock(data, data.length); |
IanBenzMaxim | 74:23be10c32fa3 | 1071 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1072 | |
IanBenzMaxim | 74:23be10c32fa3 | 1073 | return (result == OneWireMaster::Success ? OneWireSlave::Success : OneWireSlave::CommunicationError); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1074 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1075 | |
IanBenzMaxim | 74:23be10c32fa3 | 1076 | OneWireSlave::CmdResult DS28E15_22_25::writeSegment(unsigned int page, unsigned int block, const Segment & data, bool continuing) |
IanBenzMaxim | 25:bdb1c5a53b58 | 1077 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1078 | uint8_t buf[256], cs; |
IanBenzMaxim | 74:23be10c32fa3 | 1079 | int cnt, offset; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1080 | |
IanBenzMaxim | 74:23be10c32fa3 | 1081 | cnt = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 1082 | offset = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 1083 | |
IanBenzMaxim | 74:23be10c32fa3 | 1084 | // check if not continuing a previous block write |
IanBenzMaxim | 74:23be10c32fa3 | 1085 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1086 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1087 | buf[cnt++] = CMD_WRITE_MEMORY; |
IanBenzMaxim | 74:23be10c32fa3 | 1088 | buf[cnt++] = (block << 5) | page; // address |
IanBenzMaxim | 25:bdb1c5a53b58 | 1089 | |
IanBenzMaxim | 74:23be10c32fa3 | 1090 | // Send command |
IanBenzMaxim | 74:23be10c32fa3 | 1091 | m_OW_master.OWWriteBlock(&buf[0], 2); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1092 | |
IanBenzMaxim | 74:23be10c32fa3 | 1093 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 1094 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1095 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1096 | |
IanBenzMaxim | 74:23be10c32fa3 | 1097 | offset = cnt; |
IanBenzMaxim | 74:23be10c32fa3 | 1098 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1099 | |
IanBenzMaxim | 74:23be10c32fa3 | 1100 | // add the data |
IanBenzMaxim | 74:23be10c32fa3 | 1101 | for (size_t i = 0; i < data.length; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 1102 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1103 | buf[cnt++] = data[i]; |
IanBenzMaxim | 74:23be10c32fa3 | 1104 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1105 | |
IanBenzMaxim | 74:23be10c32fa3 | 1106 | // Send data |
IanBenzMaxim | 74:23be10c32fa3 | 1107 | m_OW_master.OWWriteBlock(data, data.length); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1108 | |
IanBenzMaxim | 74:23be10c32fa3 | 1109 | // Read CRC |
IanBenzMaxim | 74:23be10c32fa3 | 1110 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
IanBenzMaxim | 74:23be10c32fa3 | 1111 | cnt += 2; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1112 | |
IanBenzMaxim | 74:23be10c32fa3 | 1113 | // check the first CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 1114 | if (!continuing) |
IanBenzMaxim | 74:23be10c32fa3 | 1115 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1116 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1117 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1118 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 1119 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1120 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1121 | |
IanBenzMaxim | 74:23be10c32fa3 | 1122 | // check the second CRC16 |
IanBenzMaxim | 74:23be10c32fa3 | 1123 | if (OneWireMaster::calculateCRC16(buf, offset, (cnt - offset)) != 0xB001) |
IanBenzMaxim | 74:23be10c32fa3 | 1124 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1125 | return CommunicationError; |
IanBenzMaxim | 74:23be10c32fa3 | 1126 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1127 | |
IanBenzMaxim | 74:23be10c32fa3 | 1128 | // send release and strong pull-up |
IanBenzMaxim | 74:23be10c32fa3 | 1129 | m_OW_master.OWWriteBytePower(0xAA); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1130 | |
IanBenzMaxim | 74:23be10c32fa3 | 1131 | // now wait for the programming. |
IanBenzMaxim | 74:23be10c32fa3 | 1132 | wait_ms(eepromWriteDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 1133 | |
IanBenzMaxim | 74:23be10c32fa3 | 1134 | // disable strong pullup |
IanBenzMaxim | 74:23be10c32fa3 | 1135 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1136 | |
IanBenzMaxim | 74:23be10c32fa3 | 1137 | // read the CS byte |
IanBenzMaxim | 74:23be10c32fa3 | 1138 | m_OW_master.OWReadByte(cs); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1139 | |
IanBenzMaxim | 74:23be10c32fa3 | 1140 | if (cs == 0xAA) |
IanBenzMaxim | 74:23be10c32fa3 | 1141 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1142 | return Success; |
IanBenzMaxim | 74:23be10c32fa3 | 1143 | } |
IanBenzMaxim | 74:23be10c32fa3 | 1144 | // else |
IanBenzMaxim | 74:23be10c32fa3 | 1145 | return OperationFailure; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1146 | } |
IanBenzMaxim | 25:bdb1c5a53b58 | 1147 | |
IanBenzMaxim | 73:2cecc1372acc | 1148 | 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 | 1149 | { |
IanBenzMaxim | 74:23be10c32fa3 | 1150 | ISha256MacCoproc::SlaveSecretData slaveSecretData; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1151 | |
IanBenzMaxim | 74:23be10c32fa3 | 1152 | // insert ROM number |
IanBenzMaxim | 74:23be10c32fa3 | 1153 | std::memcpy(slaveSecretData, romId, RomId::byteLen); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1154 | |
IanBenzMaxim | 74:23be10c32fa3 | 1155 | slaveSecretData[11] = 0x00; |
IanBenzMaxim | 74:23be10c32fa3 | 1156 | slaveSecretData[10] = bindingPageNum; |
IanBenzMaxim | 74:23be10c32fa3 | 1157 | slaveSecretData[9] = manId[0]; |
IanBenzMaxim | 74:23be10c32fa3 | 1158 | slaveSecretData[8] = manId[1]; |
IanBenzMaxim | 25:bdb1c5a53b58 | 1159 | |
IanBenzMaxim | 74:23be10c32fa3 | 1160 | return MacCoproc.computeSlaveSecret(ISha256MacCoproc::DevicePage(bindingPage), partialSecret, slaveSecretData); |
IanBenzMaxim | 25:bdb1c5a53b58 | 1161 | } |