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Superseded by MaximInterface.
OneWire_Memory/Authenticators/DS28E15_22_25/DS28E15_22_25.cpp@49:36954b62f503, 2016-04-08 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Fri Apr 08 16:11:16 2016 -0500
- Revision:
- 49:36954b62f503
- Parent:
- 34:11fffbe98ef9
- Child:
- 50:e967f9befbd0
Added a Read Scratchpad operation for DS28E15/22/25. Added comments for various classes.
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| 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 | 25:bdb1c5a53b58 | 26 | #include "DS28E15_22_25.hpp" |
| IanBenzMaxim | 27:d5aaefa252f1 | 27 | #include "OneWire_Masters/OneWireMaster.h" |
| IanBenzMaxim | 25:bdb1c5a53b58 | 28 | #include "mbed.h" |
| IanBenzMaxim | 25:bdb1c5a53b58 | 29 | |
| IanBenzMaxim | 49:36954b62f503 | 30 | /// 1-Wire device commands. |
| IanBenzMaxim | 49:36954b62f503 | 31 | enum Command |
| IanBenzMaxim | 49:36954b62f503 | 32 | { |
| IanBenzMaxim | 49:36954b62f503 | 33 | CMD_WRITE_MEMORY = 0x55, |
| IanBenzMaxim | 49:36954b62f503 | 34 | CMD_READ_MEMORY = 0xF0, |
| IanBenzMaxim | 49:36954b62f503 | 35 | CMD_LOAD_LOCK_SECRET = 0x33, |
| IanBenzMaxim | 49:36954b62f503 | 36 | CMD_COMPUTE_LOCK_SECRET = 0x3C, |
| IanBenzMaxim | 49:36954b62f503 | 37 | CMD_READ_WRITE_SCRATCHPAD = 0x0F, |
| IanBenzMaxim | 49:36954b62f503 | 38 | CMD_COMPUTE_PAGEMAC = 0xA5, |
| IanBenzMaxim | 49:36954b62f503 | 39 | CMD_READ_STATUS = 0xAA, |
| IanBenzMaxim | 49:36954b62f503 | 40 | CMD_WRITE_BLOCK_PROTECT = 0xC3, |
| IanBenzMaxim | 49:36954b62f503 | 41 | CMD_WRITE_AUTH_MEMORY = 0x5A, |
| IanBenzMaxim | 49:36954b62f503 | 42 | CMD_WRITE_AUTH_PROTECT = 0xCC, |
| IanBenzMaxim | 49:36954b62f503 | 43 | }; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 44 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 45 | DS28E15_22_25::BlockProtection::BlockProtection(bool readProtection, bool writeProtection, bool eepromEmulation, bool authProtection, std::uint8_t blockNum) |
| IanBenzMaxim | 34:11fffbe98ef9 | 46 | { |
| IanBenzMaxim | 34:11fffbe98ef9 | 47 | setReadProtection(readProtection); |
| IanBenzMaxim | 34:11fffbe98ef9 | 48 | setWriteProtection(writeProtection); |
| IanBenzMaxim | 34:11fffbe98ef9 | 49 | setEepromEmulation(eepromEmulation); |
| IanBenzMaxim | 34:11fffbe98ef9 | 50 | setAuthProtection(authProtection); |
| IanBenzMaxim | 34:11fffbe98ef9 | 51 | setBlockNum(blockNum); |
| IanBenzMaxim | 34:11fffbe98ef9 | 52 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 53 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 54 | void DS28E15_22_25::BlockProtection::setBlockNum(std::uint8_t blockNum) |
| IanBenzMaxim | 34:11fffbe98ef9 | 55 | { |
| IanBenzMaxim | 34:11fffbe98ef9 | 56 | m_status &= ~blockNumMask; |
| IanBenzMaxim | 34:11fffbe98ef9 | 57 | m_status |= (blockNum & blockNumMask); |
| IanBenzMaxim | 34:11fffbe98ef9 | 58 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 59 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 60 | bool DS28E15_22_25::BlockProtection::noProtection() const |
| IanBenzMaxim | 34:11fffbe98ef9 | 61 | { |
| IanBenzMaxim | 34:11fffbe98ef9 | 62 | return !readProtection() && !writeProtection() && !eepromEmulation() && !authProtection(); |
| IanBenzMaxim | 34:11fffbe98ef9 | 63 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 64 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 65 | void DS28E15_22_25::BlockProtection::setReadProtection(bool readProtection) |
| IanBenzMaxim | 34:11fffbe98ef9 | 66 | { |
| IanBenzMaxim | 34:11fffbe98ef9 | 67 | if (readProtection) |
| IanBenzMaxim | 34:11fffbe98ef9 | 68 | m_status |= readProtectionMask; |
| IanBenzMaxim | 34:11fffbe98ef9 | 69 | else |
| IanBenzMaxim | 34:11fffbe98ef9 | 70 | m_status &= ~readProtectionMask; |
| IanBenzMaxim | 34:11fffbe98ef9 | 71 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 72 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 73 | void DS28E15_22_25::BlockProtection::setWriteProtection(bool writeProtection) |
| IanBenzMaxim | 34:11fffbe98ef9 | 74 | { |
| IanBenzMaxim | 34:11fffbe98ef9 | 75 | if (writeProtection) |
| IanBenzMaxim | 34:11fffbe98ef9 | 76 | m_status |= writeProtectionMask; |
| IanBenzMaxim | 34:11fffbe98ef9 | 77 | else |
| IanBenzMaxim | 34:11fffbe98ef9 | 78 | m_status &= ~writeProtectionMask; |
| IanBenzMaxim | 34:11fffbe98ef9 | 79 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 80 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 81 | void DS28E15_22_25::BlockProtection::setEepromEmulation(bool eepromEmulation) |
| IanBenzMaxim | 34:11fffbe98ef9 | 82 | { |
| IanBenzMaxim | 34:11fffbe98ef9 | 83 | if (eepromEmulation) |
| IanBenzMaxim | 34:11fffbe98ef9 | 84 | m_status |= eepromEmulationMask; |
| IanBenzMaxim | 34:11fffbe98ef9 | 85 | else |
| IanBenzMaxim | 34:11fffbe98ef9 | 86 | m_status &= ~eepromEmulationMask; |
| IanBenzMaxim | 34:11fffbe98ef9 | 87 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 88 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 89 | void DS28E15_22_25::BlockProtection::setAuthProtection(bool authProtection) |
| IanBenzMaxim | 34:11fffbe98ef9 | 90 | { |
| IanBenzMaxim | 34:11fffbe98ef9 | 91 | if (authProtection) |
| IanBenzMaxim | 34:11fffbe98ef9 | 92 | m_status |= authProtectionMask; |
| IanBenzMaxim | 34:11fffbe98ef9 | 93 | else |
| IanBenzMaxim | 34:11fffbe98ef9 | 94 | m_status &= ~authProtectionMask; |
| IanBenzMaxim | 34:11fffbe98ef9 | 95 | } |
| IanBenzMaxim | 34:11fffbe98ef9 | 96 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 97 | DS28E15_22_25::DS28E15_22_25(OneWireMaster& OW_master, bool lowVoltage) |
| IanBenzMaxim | 34:11fffbe98ef9 | 98 | : lowVoltage(lowVoltage), m_OW_master(OW_master) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 99 | { |
| IanBenzMaxim | 33:a4c015046956 | 100 | std::memset(manId, 0x00, manId.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 101 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 102 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 103 | DS28E15_22_25::MemoryPages DS28E15_22_25::memoryPages() |
| IanBenzMaxim | 25:bdb1c5a53b58 | 104 | { |
| IanBenzMaxim | 34:11fffbe98ef9 | 105 | MemoryPages pages; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 106 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 107 | switch (romId.familyCode()) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 108 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 109 | case DS28E25_FAMILY: |
| IanBenzMaxim | 25:bdb1c5a53b58 | 110 | pages = DS28E25_PAGES; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 111 | break; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 112 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 113 | case DS28E22_FAMILY: |
| IanBenzMaxim | 25:bdb1c5a53b58 | 114 | pages = DS28E22_PAGES; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 115 | break; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 116 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 117 | case DS28E15_FAMILY: |
| IanBenzMaxim | 25:bdb1c5a53b58 | 118 | pages = DS28E15_PAGES; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 119 | break; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 120 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 121 | default: |
| IanBenzMaxim | 25:bdb1c5a53b58 | 122 | pages = UNKNOWN_PAGES; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 123 | break; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 124 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 125 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 126 | return pages; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 127 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 128 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 129 | DS28E15_22_25::ProtectionBlocks DS28E15_22_25::protectionBlocks() |
| IanBenzMaxim | 25:bdb1c5a53b58 | 130 | { |
| IanBenzMaxim | 34:11fffbe98ef9 | 131 | ProtectionBlocks blocks; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 132 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 133 | switch (romId.familyCode()) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 134 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 135 | case DS28E25_FAMILY: |
| IanBenzMaxim | 25:bdb1c5a53b58 | 136 | blocks = DS28E25_BLOCKS; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 137 | break; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 138 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 139 | case DS28E22_FAMILY: |
| IanBenzMaxim | 25:bdb1c5a53b58 | 140 | blocks = DS28E22_BLOCKS; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 141 | break; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 142 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 143 | case DS28E15_FAMILY: |
| IanBenzMaxim | 25:bdb1c5a53b58 | 144 | blocks = DS28E15_BLOCKS; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 145 | break; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 146 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 147 | default: |
| IanBenzMaxim | 25:bdb1c5a53b58 | 148 | blocks = UNKNOWN_BLOCKS; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 149 | break; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 150 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 151 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 152 | return blocks; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 153 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 154 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 155 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthBlockProtection(const ISha256MacCoprocessor & MacCoproc, const BlockProtection & newProtection, const BlockProtection & oldProtection, bool contflag) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 156 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 157 | std::uint8_t buf[256], cs; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 158 | int cnt = 0; |
| IanBenzMaxim | 33:a4c015046956 | 159 | Mac mac; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 160 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 161 | buf[cnt++] = CMD_WRITE_AUTH_PROTECT; |
| IanBenzMaxim | 49:36954b62f503 | 162 | buf[cnt++] = newProtection.statusByte(); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 163 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 164 | // Send command |
| IanBenzMaxim | 25:bdb1c5a53b58 | 165 | m_OW_master.OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 166 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 167 | // read first CRC byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 168 | m_OW_master.OWReadByte(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 169 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 170 | // read the last CRC and enable |
| IanBenzMaxim | 25:bdb1c5a53b58 | 171 | m_OW_master.OWReadBytePower(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 172 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 173 | // now wait for the MAC computation. |
| IanBenzMaxim | 34:11fffbe98ef9 | 174 | wait_ms(shaComputationDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 175 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 176 | // disable strong pullup |
| IanBenzMaxim | 32:bce180b544ed | 177 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 178 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 179 | // check CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 180 | if (OneWireMaster::calculateCRC16(buf, 0, cnt) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 181 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 182 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 183 | ISha256MacCoprocessor::CmdResult result; |
| IanBenzMaxim | 49:36954b62f503 | 184 | result = computeProtectionWriteMac(MacCoproc, newProtection, oldProtection, romId, manId, mac); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 185 | if (result != ISha256MacCoprocessor::Success) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 186 | return OperationFailure; |
| IanBenzMaxim | 33:a4c015046956 | 187 | cnt = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 188 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 189 | // send the MAC |
| IanBenzMaxim | 33:a4c015046956 | 190 | m_OW_master.OWWriteBlock(mac, mac.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 191 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 192 | // Read CRC and CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 193 | m_OW_master.OWReadBlock(&buf[cnt], 3); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 194 | cnt += 3; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 195 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 196 | // ckeck CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 197 | if (OneWireMaster::calculateCRC16(buf, 0, (cnt - 1)) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 198 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 199 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 200 | // check CS |
| IanBenzMaxim | 25:bdb1c5a53b58 | 201 | if (buf[cnt-1] != 0xAA) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 202 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 203 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 204 | // send release and strong pull-up |
| IanBenzMaxim | 25:bdb1c5a53b58 | 205 | // DATASHEET_CORRECTION - last bit in release is a read-zero so don't check echo of write byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 206 | m_OW_master.OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 207 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 208 | // now wait for the programming. |
| IanBenzMaxim | 34:11fffbe98ef9 | 209 | wait_ms(eepromWriteDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 210 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 211 | // disable strong pullup |
| IanBenzMaxim | 32:bce180b544ed | 212 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 213 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 214 | // read the CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 215 | m_OW_master.OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 216 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 217 | if (cs == 0xAA) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 218 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 219 | // else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 220 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 221 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 222 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 223 | OneWireSlave::CmdResult DS28E15_22_25::writeBlockProtection(const BlockProtection & protection, bool continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 224 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 225 | std::uint8_t buf[256], cs; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 226 | int cnt = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 227 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 228 | // check if not continuing a previous block write |
| IanBenzMaxim | 25:bdb1c5a53b58 | 229 | if (!continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 230 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 231 | buf[cnt++] = CMD_WRITE_BLOCK_PROTECT; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 232 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 233 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 234 | // compute parameter byte |
| IanBenzMaxim | 49:36954b62f503 | 235 | buf[cnt++] = protection.statusByte(); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 236 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 237 | m_OW_master.OWWriteBlock(&buf[0], cnt); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 238 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 239 | // Read CRC |
| IanBenzMaxim | 25:bdb1c5a53b58 | 240 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 241 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 242 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 243 | // check CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 244 | if (OneWireMaster::calculateCRC16(buf, 0, cnt) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 245 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 246 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 247 | // DATASHEET_CORRECTION, on continue need second release byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 248 | if (continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 249 | m_OW_master.OWWriteByte(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 250 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 251 | // sent release |
| IanBenzMaxim | 25:bdb1c5a53b58 | 252 | m_OW_master.OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 253 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 254 | // now wait for the programming. |
| IanBenzMaxim | 34:11fffbe98ef9 | 255 | wait_ms(eepromWriteDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 256 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 257 | // disable strong pullup |
| IanBenzMaxim | 32:bce180b544ed | 258 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 259 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 260 | // read the CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 261 | m_OW_master.OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 262 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 263 | if (cs == 0xAA) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 264 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 265 | // else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 266 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 267 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 268 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 269 | OneWireSlave::CmdResult DS28E15_22_25::readBlockProtection(unsigned int blockNum, BlockProtection & protection) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 270 | { |
| IanBenzMaxim | 34:11fffbe98ef9 | 271 | std::uint8_t buf; |
| IanBenzMaxim | 34:11fffbe98ef9 | 272 | CmdResult result = readStatus(false, false, blockNum, &buf); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 273 | if (result == Success) |
| IanBenzMaxim | 49:36954b62f503 | 274 | protection.setStatusByte(buf); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 275 | return result; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 276 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 277 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 278 | OneWireSlave::CmdResult DS28E15_22_25::readStatus(bool personality, bool allpages, unsigned int pageNum, std::uint8_t * rdbuf) const |
| IanBenzMaxim | 25:bdb1c5a53b58 | 279 | { |
| IanBenzMaxim | 34:11fffbe98ef9 | 280 | std::uint8_t buf[256]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 281 | int cnt, offset, rdnum; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 282 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 283 | cnt = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 284 | offset = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 285 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 286 | buf[cnt++] = CMD_READ_STATUS; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 287 | if (personality) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 288 | buf[cnt++] = 0xE0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 289 | else if (!allpages) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 290 | buf[cnt++] = pageNum; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 291 | else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 292 | buf[cnt++] = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 293 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 294 | // send the command |
| IanBenzMaxim | 25:bdb1c5a53b58 | 295 | m_OW_master.OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 296 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 297 | offset = cnt + 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 298 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 299 | // adjust data length |
| IanBenzMaxim | 25:bdb1c5a53b58 | 300 | if ((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY)) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 301 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 302 | if (personality) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 303 | rdnum = 8; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 304 | else if (allpages) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 305 | rdnum = 20; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 306 | else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 307 | rdnum = 5; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 308 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 309 | else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 310 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 311 | if ((personality) || (allpages)) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 312 | rdnum = 8; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 313 | else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 314 | rdnum = 5; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 315 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 316 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 317 | // Read the bytes |
| IanBenzMaxim | 25:bdb1c5a53b58 | 318 | m_OW_master.OWReadBlock(&buf[cnt],rdnum); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 319 | cnt += rdnum; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 320 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 321 | // check the first CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 322 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 323 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 324 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 325 | if ((((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY)) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 326 | && (allpages || (pageNum == 15))) || |
| IanBenzMaxim | 25:bdb1c5a53b58 | 327 | (personality || allpages || (pageNum == 1))) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 328 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 329 | // check the second CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 330 | if (OneWireMaster::calculateCRC16(buf, offset, (cnt - offset)) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 331 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 332 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 333 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 334 | // copy the data to the read buffer |
| IanBenzMaxim | 25:bdb1c5a53b58 | 335 | memcpy(rdbuf, &buf[offset], rdnum - 4); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 336 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 337 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 338 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 339 | |
| IanBenzMaxim | 49:36954b62f503 | 340 | ISha256MacCoprocessor::CmdResult DS28E15_22_25::computeAuthMac(const ISha256MacCoprocessor & MacCoproc, const Page & pageData, unsigned int pageNum, const Scratchpad & challenge, const RomId & romId, const ManId & manId, Mac & mac) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 341 | { |
| IanBenzMaxim | 49:36954b62f503 | 342 | ISha256MacCoprocessor::AuthMacData authMacData; |
| IanBenzMaxim | 49:36954b62f503 | 343 | |
| IanBenzMaxim | 49:36954b62f503 | 344 | // insert ROM number or FF |
| IanBenzMaxim | 49:36954b62f503 | 345 | std::memcpy(authMacData, romId, RomId::byteLen); |
| IanBenzMaxim | 49:36954b62f503 | 346 | |
| IanBenzMaxim | 49:36954b62f503 | 347 | authMacData[10] = pageNum; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 348 | |
| IanBenzMaxim | 49:36954b62f503 | 349 | authMacData[9] = manId[0]; |
| IanBenzMaxim | 49:36954b62f503 | 350 | authMacData[8] = manId[1]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 351 | |
| IanBenzMaxim | 49:36954b62f503 | 352 | authMacData[11] = 0x00; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 353 | |
| IanBenzMaxim | 49:36954b62f503 | 354 | return MacCoproc.computeAuthMac(pageData, challenge, authMacData, mac); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 355 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 356 | |
| IanBenzMaxim | 49:36954b62f503 | 357 | ISha256MacCoprocessor::CmdResult DS28E15_22_25::computeAuthMacAnon(const ISha256MacCoprocessor & MacCoproc, const Page & pageData, unsigned int pageNum, const Scratchpad & challenge, const ManId & manId, Mac & mac) |
| IanBenzMaxim | 49:36954b62f503 | 358 | { |
| IanBenzMaxim | 49:36954b62f503 | 359 | RomId romId; |
| IanBenzMaxim | 49:36954b62f503 | 360 | std::memset(romId, 0xFF, RomId::byteLen); |
| IanBenzMaxim | 49:36954b62f503 | 361 | return computeAuthMac(MacCoproc, pageData, pageNum, challenge, romId, manId, mac); |
| IanBenzMaxim | 49:36954b62f503 | 362 | } |
| IanBenzMaxim | 49:36954b62f503 | 363 | |
| IanBenzMaxim | 49:36954b62f503 | 364 | OneWireSlave::CmdResult DS28E15_22_25::computeReadPageMac(unsigned int page_num, bool anon, Mac & mac) const |
| IanBenzMaxim | 25:bdb1c5a53b58 | 365 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 366 | std::uint8_t buf[256],cs; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 367 | int cnt = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 368 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 369 | buf[cnt++] = CMD_COMPUTE_PAGEMAC; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 370 | buf[cnt++] = ((anon) ? 0xE0 : 0x00) | page_num; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 371 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 372 | // Send command |
| IanBenzMaxim | 25:bdb1c5a53b58 | 373 | m_OW_master.OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 374 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 375 | // read first CRC byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 376 | m_OW_master.OWReadByte(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 377 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 378 | // read the last CRC and enable |
| IanBenzMaxim | 25:bdb1c5a53b58 | 379 | m_OW_master.OWReadBytePower(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 380 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 381 | // now wait for the MAC computation. |
| IanBenzMaxim | 34:11fffbe98ef9 | 382 | wait_ms(shaComputationDelayMs * 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 383 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 384 | // disable strong pullup |
| IanBenzMaxim | 32:bce180b544ed | 385 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 386 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 387 | // check CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 388 | if (OneWireMaster::calculateCRC16(buf, 0, cnt) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 389 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 390 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 391 | // read the CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 392 | m_OW_master.OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 393 | if (cs != 0xAA) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 394 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 395 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 396 | // read the MAC and CRC |
| IanBenzMaxim | 33:a4c015046956 | 397 | m_OW_master.OWReadBlock(&buf[0], (Mac::length + 2)); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 398 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 399 | // check CRC16 |
| IanBenzMaxim | 33:a4c015046956 | 400 | if (OneWireMaster::calculateCRC16(buf, 0, (Mac::length + 2)) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 401 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 402 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 403 | // copy MAC to return buffer |
| IanBenzMaxim | 33:a4c015046956 | 404 | memcpy(mac, buf, Mac::length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 405 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 406 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 407 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 408 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 409 | OneWireSlave::CmdResult DS28E15_22_25::computeSecret(unsigned int page_num, bool lock) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 410 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 411 | std::uint8_t buf[256], cs; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 412 | int cnt = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 413 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 414 | buf[cnt++] = CMD_COMPUTE_LOCK_SECRET; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 415 | buf[cnt++] = (lock) ? (0xE0 | page_num) : page_num; // lock flag |
| IanBenzMaxim | 25:bdb1c5a53b58 | 416 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 417 | // Send command |
| IanBenzMaxim | 25:bdb1c5a53b58 | 418 | m_OW_master.OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 419 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 420 | // Read CRC |
| IanBenzMaxim | 25:bdb1c5a53b58 | 421 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 422 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 423 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 424 | // check CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 425 | if (OneWireMaster::calculateCRC16(buf, 0, cnt) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 426 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 427 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 428 | // send release and strong pull-up |
| IanBenzMaxim | 25:bdb1c5a53b58 | 429 | m_OW_master.OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 430 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 431 | // now wait for the MAC computations and secret programming. |
| IanBenzMaxim | 34:11fffbe98ef9 | 432 | wait_ms(shaComputationDelayMs * 2 + secretEepromWriteDelayMs()); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 433 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 434 | // disable strong pullup |
| IanBenzMaxim | 32:bce180b544ed | 435 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 436 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 437 | // read the CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 438 | m_OW_master.OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 439 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 440 | if (cs == 0xAA) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 441 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 442 | // else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 443 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 444 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 445 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 446 | OneWireSlave::CmdResult DS28E15_22_25::writeScratchpad(const Scratchpad & data) const |
| IanBenzMaxim | 25:bdb1c5a53b58 | 447 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 448 | std::uint8_t buf[256]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 449 | int cnt = 0, offset; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 450 | |
| IanBenzMaxim | 49:36954b62f503 | 451 | buf[cnt++] = CMD_READ_WRITE_SCRATCHPAD; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 452 | if ((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY)) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 453 | buf[cnt++] = 0x20; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 454 | else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 455 | buf[cnt++] = 0x00; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 456 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 457 | // Send command |
| IanBenzMaxim | 25:bdb1c5a53b58 | 458 | m_OW_master.OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 459 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 460 | // Read CRC |
| IanBenzMaxim | 25:bdb1c5a53b58 | 461 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 462 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 463 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 464 | offset = cnt; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 465 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 466 | // add the data |
| IanBenzMaxim | 33:a4c015046956 | 467 | memcpy(&buf[cnt], data, data.length); |
| IanBenzMaxim | 33:a4c015046956 | 468 | cnt += data.length; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 469 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 470 | // Send the data |
| IanBenzMaxim | 33:a4c015046956 | 471 | m_OW_master.OWWriteBlock(data, data.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 472 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 473 | // Read CRC |
| IanBenzMaxim | 25:bdb1c5a53b58 | 474 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 475 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 476 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 477 | // check first CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 478 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 479 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 480 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 481 | // check the second CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 482 | if (OneWireMaster::calculateCRC16(buf, offset, (cnt - offset)) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 483 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 484 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 485 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 486 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 487 | |
| IanBenzMaxim | 49:36954b62f503 | 488 | OneWireSlave::CmdResult DS28E15_22_25::readScratchpad(Scratchpad & data) const |
| IanBenzMaxim | 49:36954b62f503 | 489 | { |
| IanBenzMaxim | 49:36954b62f503 | 490 | std::uint8_t buf[256]; |
| IanBenzMaxim | 49:36954b62f503 | 491 | int cnt = 0, offset; |
| IanBenzMaxim | 49:36954b62f503 | 492 | |
| IanBenzMaxim | 49:36954b62f503 | 493 | buf[cnt++] = CMD_READ_WRITE_SCRATCHPAD; |
| IanBenzMaxim | 49:36954b62f503 | 494 | if ((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY)) |
| IanBenzMaxim | 49:36954b62f503 | 495 | buf[cnt++] = 0x2F; |
| IanBenzMaxim | 49:36954b62f503 | 496 | else |
| IanBenzMaxim | 49:36954b62f503 | 497 | buf[cnt++] = 0x0F; |
| IanBenzMaxim | 49:36954b62f503 | 498 | |
| IanBenzMaxim | 49:36954b62f503 | 499 | // Send command |
| IanBenzMaxim | 49:36954b62f503 | 500 | m_OW_master.OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 49:36954b62f503 | 501 | |
| IanBenzMaxim | 49:36954b62f503 | 502 | // Read CRC |
| IanBenzMaxim | 49:36954b62f503 | 503 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 49:36954b62f503 | 504 | cnt += 2; |
| IanBenzMaxim | 49:36954b62f503 | 505 | |
| IanBenzMaxim | 49:36954b62f503 | 506 | offset = cnt; |
| IanBenzMaxim | 49:36954b62f503 | 507 | |
| IanBenzMaxim | 49:36954b62f503 | 508 | // Receive the data |
| IanBenzMaxim | 49:36954b62f503 | 509 | m_OW_master.OWReadBlock(&buf[cnt], data.length); |
| IanBenzMaxim | 49:36954b62f503 | 510 | cnt += data.length; |
| IanBenzMaxim | 49:36954b62f503 | 511 | |
| IanBenzMaxim | 49:36954b62f503 | 512 | // Read CRC |
| IanBenzMaxim | 49:36954b62f503 | 513 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 49:36954b62f503 | 514 | cnt += 2; |
| IanBenzMaxim | 49:36954b62f503 | 515 | |
| IanBenzMaxim | 49:36954b62f503 | 516 | // check first CRC16 |
| IanBenzMaxim | 49:36954b62f503 | 517 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 49:36954b62f503 | 518 | return CommunicationError; |
| IanBenzMaxim | 49:36954b62f503 | 519 | |
| IanBenzMaxim | 49:36954b62f503 | 520 | // check the second CRC16 |
| IanBenzMaxim | 49:36954b62f503 | 521 | if (OneWireMaster::calculateCRC16(buf, offset, (cnt - offset)) != 0xB001) |
| IanBenzMaxim | 49:36954b62f503 | 522 | return CommunicationError; |
| IanBenzMaxim | 49:36954b62f503 | 523 | |
| IanBenzMaxim | 49:36954b62f503 | 524 | // Copy to output |
| IanBenzMaxim | 49:36954b62f503 | 525 | memcpy(data, &buf[offset], data.length); |
| IanBenzMaxim | 49:36954b62f503 | 526 | |
| IanBenzMaxim | 49:36954b62f503 | 527 | return Success; |
| IanBenzMaxim | 49:36954b62f503 | 528 | } |
| IanBenzMaxim | 49:36954b62f503 | 529 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 530 | OneWireSlave::CmdResult DS28E15_22_25::loadSecret(bool lock) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 531 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 532 | std::uint8_t buf[256], cs; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 533 | int cnt = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 534 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 535 | buf[cnt++] = CMD_LOAD_LOCK_SECRET; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 536 | buf[cnt++] = (lock) ? 0xE0 : 0x00; // lock flag |
| IanBenzMaxim | 25:bdb1c5a53b58 | 537 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 538 | // Send command |
| IanBenzMaxim | 25:bdb1c5a53b58 | 539 | m_OW_master.OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 540 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 541 | // Read CRC |
| IanBenzMaxim | 25:bdb1c5a53b58 | 542 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 543 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 544 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 545 | // check CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 546 | if (OneWireMaster::calculateCRC16(buf, 0, cnt) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 547 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 548 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 549 | // send release and strong pull-up |
| IanBenzMaxim | 25:bdb1c5a53b58 | 550 | m_OW_master.OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 551 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 552 | // now wait for the secret programming. |
| IanBenzMaxim | 34:11fffbe98ef9 | 553 | wait_ms(secretEepromWriteDelayMs()); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 554 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 555 | // disable strong pullup |
| IanBenzMaxim | 32:bce180b544ed | 556 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 557 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 558 | // read the CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 559 | m_OW_master.OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 560 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 561 | if (cs == 0xAA) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 562 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 563 | // else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 564 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 565 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 566 | |
| IanBenzMaxim | 33:a4c015046956 | 567 | OneWireSlave::CmdResult DS28E15_22_25::readPage(unsigned int page, Page & rdbuf, bool continuing) const |
| IanBenzMaxim | 25:bdb1c5a53b58 | 568 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 569 | std::uint8_t buf[256]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 570 | int cnt, offset; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 571 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 572 | cnt = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 573 | offset = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 574 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 575 | // check if not continuing a previous block write |
| IanBenzMaxim | 25:bdb1c5a53b58 | 576 | if (!continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 577 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 578 | buf[cnt++] = CMD_READ_MEMORY; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 579 | buf[cnt++] = page; // address |
| IanBenzMaxim | 25:bdb1c5a53b58 | 580 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 581 | // Send command |
| IanBenzMaxim | 25:bdb1c5a53b58 | 582 | m_OW_master.OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 583 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 584 | // Read CRC |
| IanBenzMaxim | 25:bdb1c5a53b58 | 585 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 586 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 587 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 588 | offset = cnt; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 589 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 590 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 591 | // read data and CRC16 |
| IanBenzMaxim | 33:a4c015046956 | 592 | m_OW_master.OWReadBlock(&buf[cnt], (rdbuf.length + 2)); |
| IanBenzMaxim | 33:a4c015046956 | 593 | cnt += 34; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 594 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 595 | // check the first CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 596 | if (!continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 597 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 598 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 599 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 600 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 601 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 602 | // check the second CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 603 | if (OneWireMaster::calculateCRC16(buf, offset, (cnt - offset)) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 604 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 605 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 606 | // copy the data to the read buffer |
| IanBenzMaxim | 33:a4c015046956 | 607 | memcpy(rdbuf, &buf[offset], rdbuf.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 608 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 609 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 610 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 611 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 612 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthSegmentMac(unsigned int pageNum, unsigned int segmentNum, const Segment & newData, const Mac & mac, bool continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 613 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 614 | std::uint8_t buf[256], cs; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 615 | int cnt, i, offset; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 616 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 617 | cnt = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 618 | offset = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 619 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 620 | // check if not continuing a previous block write |
| IanBenzMaxim | 25:bdb1c5a53b58 | 621 | if (!continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 622 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 623 | buf[cnt++] = CMD_WRITE_AUTH_MEMORY; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 624 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
| IanBenzMaxim | 25:bdb1c5a53b58 | 625 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 626 | // Send command |
| IanBenzMaxim | 25:bdb1c5a53b58 | 627 | m_OW_master.OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 628 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 629 | // Read CRC |
| IanBenzMaxim | 25:bdb1c5a53b58 | 630 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 631 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 632 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 633 | offset = cnt; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 634 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 635 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 636 | // add the data |
| IanBenzMaxim | 33:a4c015046956 | 637 | for (i = 0; i < newData.length; i++) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 638 | buf[cnt++] = newData[i]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 639 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 640 | // Send data |
| IanBenzMaxim | 33:a4c015046956 | 641 | m_OW_master.OWWriteBlock(newData, newData.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 642 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 643 | // read first CRC byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 644 | m_OW_master.OWReadByte(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 645 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 646 | // read the last CRC and enable power |
| IanBenzMaxim | 25:bdb1c5a53b58 | 647 | m_OW_master.OWReadBytePower(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 648 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 649 | // now wait for the MAC computation. |
| IanBenzMaxim | 34:11fffbe98ef9 | 650 | wait_ms(shaComputationDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 651 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 652 | // disable strong pullup |
| IanBenzMaxim | 32:bce180b544ed | 653 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 654 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 655 | // check the first CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 656 | if (!continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 657 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 658 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 659 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 660 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 661 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 662 | // check the second CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 663 | unsigned short CRC16 = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 664 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 665 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 666 | if ((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY)) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 667 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 668 | if (continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 669 | CRC16 = OneWireMaster::calculateCRC16(CRC16, 0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 670 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 671 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 672 | CRC16 = OneWireMaster::calculateCRC16(buf, offset, (cnt - offset), CRC16); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 673 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 674 | if (CRC16 != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 675 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 676 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 677 | // transmit MAC as a block |
| IanBenzMaxim | 33:a4c015046956 | 678 | m_OW_master.OWWriteBlock(mac, mac.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 679 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 680 | // calculate CRC on MAC |
| IanBenzMaxim | 33:a4c015046956 | 681 | CRC16 = OneWireMaster::calculateCRC16(mac, 0, mac.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 682 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 683 | // append read of CRC16 and CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 684 | m_OW_master.OWReadBlock(&buf[0], 3); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 685 | cnt = 3; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 686 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 687 | // ckeck CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 688 | CRC16 = OneWireMaster::calculateCRC16(buf, 0, (cnt - 1), CRC16); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 689 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 690 | if (CRC16 != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 691 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 692 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 693 | // check CS |
| IanBenzMaxim | 25:bdb1c5a53b58 | 694 | if (buf[cnt-1] != 0xAA) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 695 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 696 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 697 | // send release and strong pull-up |
| IanBenzMaxim | 25:bdb1c5a53b58 | 698 | m_OW_master.OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 699 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 700 | // now wait for the programming. |
| IanBenzMaxim | 34:11fffbe98ef9 | 701 | wait_ms(eepromWriteDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 702 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 703 | // disable strong pullup |
| IanBenzMaxim | 32:bce180b544ed | 704 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 705 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 706 | // read the CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 707 | m_OW_master.OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 708 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 709 | if (cs == 0xAA) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 710 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 711 | // else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 712 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 713 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 714 | |
| IanBenzMaxim | 49:36954b62f503 | 715 | ISha256MacCoprocessor::CmdResult DS28E15_22_25::computeSegmentWriteMac(const ISha256MacCoprocessor & MacCoproc, unsigned int pageNum, unsigned int segmentNum, const Segment & newData, const Segment & oldData, const RomId & romId, const ManId & manId, Mac & mac) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 716 | { |
| IanBenzMaxim | 33:a4c015046956 | 717 | ISha256MacCoprocessor::WriteMacData MT; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 718 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 719 | // insert ROM number |
| IanBenzMaxim | 25:bdb1c5a53b58 | 720 | memcpy(&MT[0], romId, RomId::byteLen); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 721 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 722 | MT[11] = segmentNum; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 723 | MT[10] = pageNum; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 724 | MT[9] = manId[0]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 725 | MT[8] = manId[1]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 726 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 727 | // insert old data |
| IanBenzMaxim | 33:a4c015046956 | 728 | memcpy(&MT[12], oldData, Segment::length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 729 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 730 | // insert new data |
| IanBenzMaxim | 33:a4c015046956 | 731 | memcpy(&MT[16], newData, Segment::length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 732 | |
| IanBenzMaxim | 33:a4c015046956 | 733 | return MacCoproc.computeWriteMac(MT, mac); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 734 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 735 | |
| IanBenzMaxim | 49:36954b62f503 | 736 | ISha256MacCoprocessor::CmdResult DS28E15_22_25::computeProtectionWriteMac(const ISha256MacCoprocessor & MacCoproc, const BlockProtection & newProtection, const BlockProtection & oldProtection, const RomId & romId, const ManId & manId, Mac & mac) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 737 | { |
| IanBenzMaxim | 33:a4c015046956 | 738 | ISha256MacCoprocessor::WriteMacData MT; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 739 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 740 | // insert ROM number |
| IanBenzMaxim | 25:bdb1c5a53b58 | 741 | std::memcpy(MT, romId, RomId::byteLen); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 742 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 743 | // instert block and page |
| IanBenzMaxim | 25:bdb1c5a53b58 | 744 | MT[11] = 0; |
| IanBenzMaxim | 34:11fffbe98ef9 | 745 | MT[10] = newProtection.blockNum(); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 746 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 747 | MT[9] = manId[0]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 748 | MT[8] = manId[1]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 749 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 750 | // old data |
| IanBenzMaxim | 34:11fffbe98ef9 | 751 | MT[12] = oldProtection.authProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 34:11fffbe98ef9 | 752 | MT[13] = oldProtection.eepromEmulation() ? 0x01 : 0x00; |
| IanBenzMaxim | 34:11fffbe98ef9 | 753 | MT[14] = oldProtection.writeProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 34:11fffbe98ef9 | 754 | MT[15] = oldProtection.readProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 755 | // new data |
| IanBenzMaxim | 34:11fffbe98ef9 | 756 | MT[16] = newProtection.authProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 34:11fffbe98ef9 | 757 | MT[17] = newProtection.eepromEmulation() ? 0x01 : 0x00; |
| IanBenzMaxim | 34:11fffbe98ef9 | 758 | MT[18] = newProtection.writeProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 34:11fffbe98ef9 | 759 | MT[19] = newProtection.readProtection() ? 0x01 : 0x00; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 760 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 761 | // compute the mac |
| IanBenzMaxim | 33:a4c015046956 | 762 | return MacCoproc.computeWriteMac(MT, mac); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 763 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 764 | |
| IanBenzMaxim | 33:a4c015046956 | 765 | OneWireSlave::CmdResult DS28E15_22_25::writeAuthSegment(const ISha256MacCoprocessor & MacCoproc, unsigned int pageNum, unsigned int segmentNum, const Segment & newData, const Segment & oldData, bool continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 766 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 767 | std::uint8_t buf[256], cs; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 768 | int cnt, offset; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 769 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 770 | cnt = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 771 | offset = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 772 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 773 | // check if not continuing a previous block write |
| IanBenzMaxim | 25:bdb1c5a53b58 | 774 | if (!continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 775 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 776 | buf[cnt++] = CMD_WRITE_AUTH_MEMORY; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 777 | buf[cnt++] = (segmentNum << 5) | pageNum; // address |
| IanBenzMaxim | 25:bdb1c5a53b58 | 778 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 779 | // Send command |
| IanBenzMaxim | 25:bdb1c5a53b58 | 780 | m_OW_master.OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 781 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 782 | // Read CRC |
| IanBenzMaxim | 25:bdb1c5a53b58 | 783 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 784 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 785 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 786 | offset = cnt; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 787 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 788 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 789 | // add the data |
| IanBenzMaxim | 33:a4c015046956 | 790 | for (size_t i = 0; i < newData.length; i++) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 791 | buf[cnt++] = newData[i]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 792 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 793 | // Send data |
| IanBenzMaxim | 33:a4c015046956 | 794 | m_OW_master.OWWriteBlock(newData, newData.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 795 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 796 | // read first CRC byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 797 | m_OW_master.OWReadByte(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 798 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 799 | // read the last CRC and enable power |
| IanBenzMaxim | 25:bdb1c5a53b58 | 800 | m_OW_master.OWReadBytePower(buf[cnt++]); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 801 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 802 | // now wait for the MAC computation. |
| IanBenzMaxim | 34:11fffbe98ef9 | 803 | wait_ms(shaComputationDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 804 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 805 | // disable strong pullup |
| IanBenzMaxim | 32:bce180b544ed | 806 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 807 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 808 | // check the first CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 809 | if (!continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 810 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 811 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 812 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 813 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 814 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 815 | // check the second CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 816 | unsigned short CRC16 = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 817 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 818 | // DS28E25/DS28E22, crc gets calculagted with CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 819 | if ((romId.familyCode() == DS28E25_FAMILY) || (romId.familyCode() == DS28E22_FAMILY)) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 820 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 821 | if (continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 822 | CRC16 = OneWireMaster::calculateCRC16(CRC16, 0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 823 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 824 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 825 | CRC16 = OneWireMaster::calculateCRC16(buf, offset, (cnt - offset), CRC16); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 826 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 827 | if (CRC16 != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 828 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 829 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 830 | // compute the mac |
| IanBenzMaxim | 25:bdb1c5a53b58 | 831 | ISha256MacCoprocessor::CmdResult result; |
| IanBenzMaxim | 33:a4c015046956 | 832 | Mac mac; |
| IanBenzMaxim | 49:36954b62f503 | 833 | result = computeSegmentWriteMac(MacCoproc, pageNum, segmentNum, newData, oldData, romId, manId, mac); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 834 | if (result != ISha256MacCoprocessor::Success) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 835 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 836 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 837 | // transmit MAC as a block |
| IanBenzMaxim | 33:a4c015046956 | 838 | m_OW_master.OWWriteBlock(mac, mac.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 839 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 840 | // calculate CRC on MAC |
| IanBenzMaxim | 33:a4c015046956 | 841 | CRC16 = OneWireMaster::calculateCRC16(mac, 0, mac.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 842 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 843 | // append read of CRC16 and CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 844 | m_OW_master.OWReadBlock(&buf[0], 3); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 845 | cnt = 3; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 846 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 847 | // ckeck CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 848 | CRC16 = OneWireMaster::calculateCRC16(buf, 0, (cnt - 1), CRC16); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 849 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 850 | if (CRC16 != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 851 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 852 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 853 | // check CS |
| IanBenzMaxim | 25:bdb1c5a53b58 | 854 | if (buf[cnt-1] != 0xAA) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 855 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 856 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 857 | // send release and strong pull-up |
| IanBenzMaxim | 25:bdb1c5a53b58 | 858 | m_OW_master.OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 859 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 860 | // now wait for the programming. |
| IanBenzMaxim | 34:11fffbe98ef9 | 861 | wait_ms(eepromWriteDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 862 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 863 | // disable strong pullup |
| IanBenzMaxim | 32:bce180b544ed | 864 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 865 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 866 | // read the CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 867 | m_OW_master.OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 868 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 869 | if (cs == 0xAA) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 870 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 871 | // else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 872 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 873 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 874 | |
| IanBenzMaxim | 33:a4c015046956 | 875 | OneWireSlave::CmdResult DS28E15_22_25::readSegment(unsigned int page, unsigned int segment, Segment & data) const |
| IanBenzMaxim | 25:bdb1c5a53b58 | 876 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 877 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 878 | std::uint8_t buf[2]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 879 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 880 | buf[0] = CMD_READ_MEMORY; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 881 | buf[1] = (segment << 5) | page; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 882 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 883 | // Transmit command |
| IanBenzMaxim | 25:bdb1c5a53b58 | 884 | m_OW_master.OWWriteBlock(buf, 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 885 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 886 | // Receive CRC |
| IanBenzMaxim | 25:bdb1c5a53b58 | 887 | result = m_OW_master.OWReadBlock(buf, 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 888 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 889 | // Receive data |
| IanBenzMaxim | 25:bdb1c5a53b58 | 890 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 33:a4c015046956 | 891 | result = m_OW_master.OWReadBlock(data, data.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 892 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 893 | return (result == OneWireMaster::Success ? OneWireSlave::Success : OneWireSlave::CommunicationError); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 894 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 895 | |
| IanBenzMaxim | 33:a4c015046956 | 896 | OneWireSlave::CmdResult DS28E15_22_25::writeSegment(unsigned int page, unsigned int block, const Segment & data, bool continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 897 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 898 | std::uint8_t buf[256], cs; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 899 | int cnt, offset; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 900 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 901 | cnt = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 902 | offset = 0; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 903 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 904 | // check if not continuing a previous block write |
| IanBenzMaxim | 25:bdb1c5a53b58 | 905 | if (!continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 906 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 907 | buf[cnt++] = CMD_WRITE_MEMORY; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 908 | buf[cnt++] = (block << 5) | page; // address |
| IanBenzMaxim | 25:bdb1c5a53b58 | 909 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 910 | // Send command |
| IanBenzMaxim | 25:bdb1c5a53b58 | 911 | m_OW_master.OWWriteBlock(&buf[0], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 912 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 913 | // Read CRC |
| IanBenzMaxim | 25:bdb1c5a53b58 | 914 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 915 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 916 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 917 | offset = cnt; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 918 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 919 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 920 | // add the data |
| IanBenzMaxim | 33:a4c015046956 | 921 | for (size_t i = 0; i < data.length; i++) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 922 | buf[cnt++] = data[i]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 923 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 924 | // Send data |
| IanBenzMaxim | 33:a4c015046956 | 925 | m_OW_master.OWWriteBlock(data, data.length); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 926 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 927 | // Read CRC |
| IanBenzMaxim | 25:bdb1c5a53b58 | 928 | m_OW_master.OWReadBlock(&buf[cnt], 2); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 929 | cnt += 2; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 930 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 931 | // check the first CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 932 | if (!continuing) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 933 | { |
| IanBenzMaxim | 25:bdb1c5a53b58 | 934 | if (OneWireMaster::calculateCRC16(buf, 0, offset) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 935 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 936 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 937 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 938 | // check the second CRC16 |
| IanBenzMaxim | 25:bdb1c5a53b58 | 939 | if (OneWireMaster::calculateCRC16(buf, offset, (cnt - offset)) != 0xB001) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 940 | return CommunicationError; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 941 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 942 | // send release and strong pull-up |
| IanBenzMaxim | 25:bdb1c5a53b58 | 943 | m_OW_master.OWWriteBytePower(0xAA); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 944 | |
| IanBenzMaxim | 34:11fffbe98ef9 | 945 | // now wait for the programming. |
| IanBenzMaxim | 34:11fffbe98ef9 | 946 | wait_ms(eepromWriteDelayMs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 947 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 948 | // disable strong pullup |
| IanBenzMaxim | 32:bce180b544ed | 949 | m_OW_master.OWSetLevel(OneWireMaster::LEVEL_NORMAL); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 950 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 951 | // read the CS byte |
| IanBenzMaxim | 25:bdb1c5a53b58 | 952 | m_OW_master.OWReadByte(cs); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 953 | |
| IanBenzMaxim | 25:bdb1c5a53b58 | 954 | if (cs == 0xAA) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 955 | return Success; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 956 | // else |
| IanBenzMaxim | 25:bdb1c5a53b58 | 957 | return OperationFailure; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 958 | } |
| IanBenzMaxim | 25:bdb1c5a53b58 | 959 | |
| IanBenzMaxim | 49:36954b62f503 | 960 | ISha256MacCoprocessor::CmdResult DS28E15_22_25::computeNextSecret(ISha256MacCoprocessor & MacCoproc, const Page & bindingPage, unsigned int bindingPageNum, const Scratchpad & partialSecret, const RomId & romId, const ManId & manId) |
| IanBenzMaxim | 25:bdb1c5a53b58 | 961 | { |
| IanBenzMaxim | 33:a4c015046956 | 962 | ISha256MacCoprocessor::SlaveSecretData slaveSecretData; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 963 | |
| IanBenzMaxim | 33:a4c015046956 | 964 | // insert ROM number |
| IanBenzMaxim | 33:a4c015046956 | 965 | std::memcpy(slaveSecretData, romId, RomId::byteLen); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 966 | |
| IanBenzMaxim | 33:a4c015046956 | 967 | slaveSecretData[11] = 0x00; |
| IanBenzMaxim | 49:36954b62f503 | 968 | slaveSecretData[10] = bindingPageNum; |
| IanBenzMaxim | 33:a4c015046956 | 969 | slaveSecretData[9] = manId[0]; |
| IanBenzMaxim | 33:a4c015046956 | 970 | slaveSecretData[8] = manId[1]; |
| IanBenzMaxim | 25:bdb1c5a53b58 | 971 | |
| IanBenzMaxim | 49:36954b62f503 | 972 | return MacCoproc.computeSlaveSecret(bindingPage, partialSecret, slaveSecretData); |
| IanBenzMaxim | 25:bdb1c5a53b58 | 973 | } |