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Superseded by MaximInterface.
Masters/DS2465/DS2465.cpp@142:85b71cfd617e, 2019-08-13 (annotated)
- Committer:
- mfruge
- Date:
- Tue Aug 13 14:42:37 2019 +0000
- Revision:
- 142:85b71cfd617e
- Parent:
- 141:cf38f48a2a49
Added functions to ROMCommands to add Alarm Search functionality
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
IanBenzMaxim | 75:8b627804927c | 1 | /******************************************************************//** |
IanBenzMaxim | 75:8b627804927c | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
IanBenzMaxim | 75:8b627804927c | 3 | * |
IanBenzMaxim | 75:8b627804927c | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
IanBenzMaxim | 75:8b627804927c | 5 | * copy of this software and associated documentation files (the "Software"), |
IanBenzMaxim | 75:8b627804927c | 6 | * to deal in the Software without restriction, including without limitation |
IanBenzMaxim | 75:8b627804927c | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
IanBenzMaxim | 75:8b627804927c | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
IanBenzMaxim | 75:8b627804927c | 9 | * Software is furnished to do so, subject to the following conditions: |
IanBenzMaxim | 75:8b627804927c | 10 | * |
IanBenzMaxim | 75:8b627804927c | 11 | * The above copyright notice and this permission notice shall be included |
IanBenzMaxim | 75:8b627804927c | 12 | * in all copies or substantial portions of the Software. |
IanBenzMaxim | 75:8b627804927c | 13 | * |
IanBenzMaxim | 75:8b627804927c | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
IanBenzMaxim | 75:8b627804927c | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
IanBenzMaxim | 75:8b627804927c | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
IanBenzMaxim | 75:8b627804927c | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
IanBenzMaxim | 75:8b627804927c | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
IanBenzMaxim | 75:8b627804927c | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
IanBenzMaxim | 75:8b627804927c | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
IanBenzMaxim | 75:8b627804927c | 21 | * |
IanBenzMaxim | 75:8b627804927c | 22 | * Except as contained in this notice, the name of Maxim Integrated |
IanBenzMaxim | 75:8b627804927c | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
IanBenzMaxim | 75:8b627804927c | 24 | * Products, Inc. Branding Policy. |
IanBenzMaxim | 75:8b627804927c | 25 | * |
IanBenzMaxim | 75:8b627804927c | 26 | * The mere transfer of this software does not imply any licenses |
IanBenzMaxim | 75:8b627804927c | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
IanBenzMaxim | 75:8b627804927c | 28 | * trademarks, maskwork rights, or any other form of intellectual |
IanBenzMaxim | 75:8b627804927c | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
IanBenzMaxim | 75:8b627804927c | 30 | * ownership rights. |
IanBenzMaxim | 75:8b627804927c | 31 | **********************************************************************/ |
IanBenzMaxim | 75:8b627804927c | 32 | |
j3 | 104:3f48daed532b | 33 | #include "Masters/DS2465/DS2465.h" |
IanBenzMaxim | 73:2cecc1372acc | 34 | #include "I2C.h" |
IanBenzMaxim | 73:2cecc1372acc | 35 | #include "wait_api.h" |
IanBenzMaxim | 21:00c94aeb533e | 36 | |
IanBenzMaxim | 78:0cbbac7f2016 | 37 | using namespace OneWire; |
IanBenzMaxim | 78:0cbbac7f2016 | 38 | |
IanBenzMaxim | 21:00c94aeb533e | 39 | #define I2C_WRITE 0 |
IanBenzMaxim | 21:00c94aeb533e | 40 | #define I2C_READ 1 |
IanBenzMaxim | 21:00c94aeb533e | 41 | |
IanBenzMaxim | 78:0cbbac7f2016 | 42 | /// DS2465 Commands |
IanBenzMaxim | 78:0cbbac7f2016 | 43 | enum Command |
IanBenzMaxim | 78:0cbbac7f2016 | 44 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 45 | DeviceResetCmd = 0xF0, |
IanBenzMaxim | 78:0cbbac7f2016 | 46 | WriteDeviceConfigCmd = 0xD2, |
IanBenzMaxim | 78:0cbbac7f2016 | 47 | OwResetCmd = 0xB4, |
IanBenzMaxim | 78:0cbbac7f2016 | 48 | OwWriteByteCmd = 0xA5, |
IanBenzMaxim | 78:0cbbac7f2016 | 49 | OwReadByteCmd = 0x96, |
IanBenzMaxim | 78:0cbbac7f2016 | 50 | OwSingleBitCmd = 0x87, |
IanBenzMaxim | 78:0cbbac7f2016 | 51 | OwTripletCmd = 0x78, |
IanBenzMaxim | 78:0cbbac7f2016 | 52 | OwTransmitBlockCmd = 0x69, |
IanBenzMaxim | 78:0cbbac7f2016 | 53 | OwReceiveBlockCmd = 0xE1, |
IanBenzMaxim | 78:0cbbac7f2016 | 54 | CopyScratchpadCmd = 0x5A, |
IanBenzMaxim | 78:0cbbac7f2016 | 55 | ComputeSlaveSecretCmd = 0x4B, |
IanBenzMaxim | 78:0cbbac7f2016 | 56 | ComputeSlaveAuthMacCmd = 0x3C, |
IanBenzMaxim | 78:0cbbac7f2016 | 57 | ComputeSlaveWriteMacCmd = 0x2D, |
IanBenzMaxim | 78:0cbbac7f2016 | 58 | ComputeNextMasterSecretCmd = 0x1E, |
IanBenzMaxim | 78:0cbbac7f2016 | 59 | SetProtectionCmd = 0x0F |
IanBenzMaxim | 78:0cbbac7f2016 | 60 | }; |
IanBenzMaxim | 21:00c94aeb533e | 61 | |
IanBenzMaxim | 78:0cbbac7f2016 | 62 | /// DS2465 Status Bits |
IanBenzMaxim | 78:0cbbac7f2016 | 63 | enum StatusBit |
IanBenzMaxim | 78:0cbbac7f2016 | 64 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 65 | Status_1WB = 0x01, |
IanBenzMaxim | 78:0cbbac7f2016 | 66 | Status_PPD = 0x02, |
IanBenzMaxim | 78:0cbbac7f2016 | 67 | Status_SD = 0x04, |
IanBenzMaxim | 78:0cbbac7f2016 | 68 | Status_LL = 0x08, |
IanBenzMaxim | 78:0cbbac7f2016 | 69 | Status_RST = 0x10, |
IanBenzMaxim | 78:0cbbac7f2016 | 70 | Status_SBR = 0x20, |
IanBenzMaxim | 78:0cbbac7f2016 | 71 | Status_TSB = 0x40, |
IanBenzMaxim | 78:0cbbac7f2016 | 72 | Status_DIR = 0x80 |
IanBenzMaxim | 78:0cbbac7f2016 | 73 | }; |
IanBenzMaxim | 73:2cecc1372acc | 74 | |
IanBenzMaxim | 122:955ac6c82533 | 75 | static const int I2C_WRITE_OK = 1; |
j3 | 141:cf38f48a2a49 | 76 | static const uint8_t maxBlockSize = 63; |
IanBenzMaxim | 21:00c94aeb533e | 77 | |
IanBenzMaxim | 73:2cecc1372acc | 78 | uint8_t DS2465::Config::readByte() const |
IanBenzMaxim | 24:8942d8478d68 | 79 | { |
IanBenzMaxim | 74:23be10c32fa3 | 80 | uint8_t config = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 81 | if (get1WS()) |
IanBenzMaxim | 74:23be10c32fa3 | 82 | { |
IanBenzMaxim | 74:23be10c32fa3 | 83 | config |= 0x08; |
IanBenzMaxim | 74:23be10c32fa3 | 84 | } |
IanBenzMaxim | 74:23be10c32fa3 | 85 | if (getSPU()) |
IanBenzMaxim | 74:23be10c32fa3 | 86 | { |
IanBenzMaxim | 74:23be10c32fa3 | 87 | config |= 0x04; |
IanBenzMaxim | 74:23be10c32fa3 | 88 | } |
IanBenzMaxim | 74:23be10c32fa3 | 89 | if (getPDN()) |
IanBenzMaxim | 74:23be10c32fa3 | 90 | { |
IanBenzMaxim | 74:23be10c32fa3 | 91 | config |= 0x02; |
IanBenzMaxim | 74:23be10c32fa3 | 92 | } |
IanBenzMaxim | 74:23be10c32fa3 | 93 | if (getAPU()) |
IanBenzMaxim | 74:23be10c32fa3 | 94 | { |
IanBenzMaxim | 74:23be10c32fa3 | 95 | config |= 0x01; |
IanBenzMaxim | 74:23be10c32fa3 | 96 | } |
IanBenzMaxim | 74:23be10c32fa3 | 97 | return config; |
IanBenzMaxim | 24:8942d8478d68 | 98 | } |
IanBenzMaxim | 24:8942d8478d68 | 99 | |
IanBenzMaxim | 73:2cecc1372acc | 100 | uint8_t DS2465::Config::writeByte() const |
IanBenzMaxim | 24:8942d8478d68 | 101 | { |
IanBenzMaxim | 74:23be10c32fa3 | 102 | uint8_t config = readByte(); |
IanBenzMaxim | 74:23be10c32fa3 | 103 | return ((~config << 4) | config); |
IanBenzMaxim | 24:8942d8478d68 | 104 | } |
IanBenzMaxim | 24:8942d8478d68 | 105 | |
IanBenzMaxim | 24:8942d8478d68 | 106 | void DS2465::Config::reset() |
IanBenzMaxim | 24:8942d8478d68 | 107 | { |
IanBenzMaxim | 74:23be10c32fa3 | 108 | set1WS(false); |
IanBenzMaxim | 74:23be10c32fa3 | 109 | setSPU(false); |
IanBenzMaxim | 74:23be10c32fa3 | 110 | setPDN(false); |
IanBenzMaxim | 74:23be10c32fa3 | 111 | setAPU(true); |
IanBenzMaxim | 24:8942d8478d68 | 112 | } |
IanBenzMaxim | 24:8942d8478d68 | 113 | |
IanBenzMaxim | 73:2cecc1372acc | 114 | DS2465::DS2465(mbed::I2C & I2C_interface, uint8_t I2C_address) |
IanBenzMaxim | 74:23be10c32fa3 | 115 | : m_I2C_interface(I2C_interface), m_I2C_address(I2C_address) |
IanBenzMaxim | 21:00c94aeb533e | 116 | { |
IanBenzMaxim | 74:23be10c32fa3 | 117 | |
IanBenzMaxim | 21:00c94aeb533e | 118 | } |
IanBenzMaxim | 21:00c94aeb533e | 119 | |
IanBenzMaxim | 21:00c94aeb533e | 120 | OneWireMaster::CmdResult DS2465::OWInitMaster() |
IanBenzMaxim | 21:00c94aeb533e | 121 | { |
IanBenzMaxim | 74:23be10c32fa3 | 122 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 123 | |
IanBenzMaxim | 74:23be10c32fa3 | 124 | // reset DS2465 |
IanBenzMaxim | 74:23be10c32fa3 | 125 | result = reset(); |
IanBenzMaxim | 74:23be10c32fa3 | 126 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 127 | { |
IanBenzMaxim | 74:23be10c32fa3 | 128 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 129 | } |
IanBenzMaxim | 74:23be10c32fa3 | 130 | |
IanBenzMaxim | 74:23be10c32fa3 | 131 | // write the default configuration setup |
IanBenzMaxim | 74:23be10c32fa3 | 132 | Config defaultConfig; |
IanBenzMaxim | 74:23be10c32fa3 | 133 | result = writeConfig(defaultConfig, true); |
IanBenzMaxim | 47:307dc45952db | 134 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 135 | } |
IanBenzMaxim | 21:00c94aeb533e | 136 | |
IanBenzMaxim | 33:a4c015046956 | 137 | OneWireMaster::CmdResult DS2465::computeNextMasterSecret(bool swap, unsigned int pageNum, PageRegion region) |
IanBenzMaxim | 21:00c94aeb533e | 138 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 139 | uint8_t command[2] = { ComputeNextMasterSecretCmd, (uint8_t)(swap ? (0xC8 | (pageNum << 4) | region) : 0xBF) }; |
IanBenzMaxim | 78:0cbbac7f2016 | 140 | return writeMemory(CommandReg, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 141 | } |
IanBenzMaxim | 21:00c94aeb533e | 142 | |
IanBenzMaxim | 33:a4c015046956 | 143 | OneWireMaster::CmdResult DS2465::computeWriteMac(bool regwrite, bool swap, unsigned int pageNum, unsigned int segmentNum) const |
IanBenzMaxim | 21:00c94aeb533e | 144 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 145 | uint8_t command[2] = { ComputeSlaveWriteMacCmd, (uint8_t)((regwrite << 7) | (swap << 6) | (pageNum << 4) | segmentNum) }; |
IanBenzMaxim | 78:0cbbac7f2016 | 146 | return cWriteMemory(CommandReg, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 147 | } |
IanBenzMaxim | 21:00c94aeb533e | 148 | |
IanBenzMaxim | 33:a4c015046956 | 149 | OneWireMaster::CmdResult DS2465::computeAuthMac(bool swap, unsigned int pageNum, PageRegion region) const |
IanBenzMaxim | 21:00c94aeb533e | 150 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 151 | uint8_t command[2] = { ComputeSlaveAuthMacCmd, (uint8_t)(swap ? (0xC8 | (pageNum << 4) | region) : 0xBF) }; |
IanBenzMaxim | 78:0cbbac7f2016 | 152 | return cWriteMemory(CommandReg, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 153 | } |
IanBenzMaxim | 21:00c94aeb533e | 154 | |
IanBenzMaxim | 33:a4c015046956 | 155 | OneWireMaster::CmdResult DS2465::computeSlaveSecret(bool swap, unsigned int pageNum, PageRegion region) |
IanBenzMaxim | 21:00c94aeb533e | 156 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 157 | uint8_t command[2] = { ComputeSlaveSecretCmd, (uint8_t)(swap ? (0xC8 | (pageNum << 4) | region) : 0xBF) }; |
IanBenzMaxim | 78:0cbbac7f2016 | 158 | return writeMemory(CommandReg, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 159 | } |
IanBenzMaxim | 21:00c94aeb533e | 160 | |
IanBenzMaxim | 73:2cecc1372acc | 161 | ISha256MacCoproc::CmdResult DS2465::setMasterSecret(const Secret & masterSecret) |
IanBenzMaxim | 21:00c94aeb533e | 162 | { |
IanBenzMaxim | 74:23be10c32fa3 | 163 | OneWireMaster::CmdResult result; |
j3 | 139:f0e0a7976846 | 164 | result = writeMemory(Scratchpad, masterSecret.data(), masterSecret.size()); |
IanBenzMaxim | 74:23be10c32fa3 | 165 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 166 | { |
IanBenzMaxim | 74:23be10c32fa3 | 167 | result = copyScratchpadToSecret(); |
IanBenzMaxim | 74:23be10c32fa3 | 168 | } |
IanBenzMaxim | 74:23be10c32fa3 | 169 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 170 | { |
IanBenzMaxim | 74:23be10c32fa3 | 171 | wait_ms(eepromPageWriteDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 172 | } |
IanBenzMaxim | 74:23be10c32fa3 | 173 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 174 | } |
IanBenzMaxim | 21:00c94aeb533e | 175 | |
IanBenzMaxim | 73:2cecc1372acc | 176 | ISha256MacCoproc::CmdResult DS2465::computeWriteMac(const WriteMacData & writeMacData, Mac & mac) const |
IanBenzMaxim | 21:00c94aeb533e | 177 | { |
IanBenzMaxim | 74:23be10c32fa3 | 178 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 179 | // Write input data to scratchpad |
j3 | 139:f0e0a7976846 | 180 | result = writeScratchpad(writeMacData.data(), writeMacData.size()); |
IanBenzMaxim | 74:23be10c32fa3 | 181 | // Compute MAC |
IanBenzMaxim | 74:23be10c32fa3 | 182 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 183 | { |
IanBenzMaxim | 74:23be10c32fa3 | 184 | result = computeWriteMac(false); |
IanBenzMaxim | 74:23be10c32fa3 | 185 | } |
IanBenzMaxim | 74:23be10c32fa3 | 186 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 187 | { |
IanBenzMaxim | 74:23be10c32fa3 | 188 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 189 | // Read MAC from register |
j3 | 139:f0e0a7976846 | 190 | result = readMemory(MacReadoutReg, mac.data(), mac.size(), true); |
IanBenzMaxim | 74:23be10c32fa3 | 191 | } |
IanBenzMaxim | 74:23be10c32fa3 | 192 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 193 | } |
IanBenzMaxim | 21:00c94aeb533e | 194 | |
IanBenzMaxim | 73:2cecc1372acc | 195 | ISha256MacCoproc::CmdResult DS2465::computeAuthMac(const DevicePage & devicePage, const DeviceScratchpad & challenge, const AuthMacData & authMacData, Mac & mac) const |
IanBenzMaxim | 21:00c94aeb533e | 196 | { |
IanBenzMaxim | 74:23be10c32fa3 | 197 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 78:0cbbac7f2016 | 198 | int addr = Scratchpad; |
IanBenzMaxim | 74:23be10c32fa3 | 199 | // Write input data to scratchpad |
j3 | 139:f0e0a7976846 | 200 | result = cWriteMemory(addr, devicePage.data(), devicePage.size()); |
IanBenzMaxim | 74:23be10c32fa3 | 201 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 202 | { |
j3 | 139:f0e0a7976846 | 203 | addr += devicePage.size(); |
j3 | 139:f0e0a7976846 | 204 | result = cWriteMemory(addr, challenge.data(), challenge.size()); |
IanBenzMaxim | 74:23be10c32fa3 | 205 | } |
IanBenzMaxim | 74:23be10c32fa3 | 206 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 207 | { |
j3 | 139:f0e0a7976846 | 208 | addr += challenge.size(); |
j3 | 139:f0e0a7976846 | 209 | result = cWriteMemory(addr, authMacData.data(), authMacData.size()); |
IanBenzMaxim | 74:23be10c32fa3 | 210 | } |
IanBenzMaxim | 74:23be10c32fa3 | 211 | // Compute MAC |
IanBenzMaxim | 74:23be10c32fa3 | 212 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 213 | { |
IanBenzMaxim | 74:23be10c32fa3 | 214 | result = computeAuthMac(); |
IanBenzMaxim | 74:23be10c32fa3 | 215 | } |
IanBenzMaxim | 74:23be10c32fa3 | 216 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 217 | { |
IanBenzMaxim | 74:23be10c32fa3 | 218 | wait_ms(shaComputationDelayMs * 2); |
IanBenzMaxim | 74:23be10c32fa3 | 219 | // Read MAC from register |
j3 | 139:f0e0a7976846 | 220 | result = readMemory(MacReadoutReg, mac.data(), mac.size(), true); |
IanBenzMaxim | 74:23be10c32fa3 | 221 | } |
IanBenzMaxim | 74:23be10c32fa3 | 222 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 223 | } |
IanBenzMaxim | 21:00c94aeb533e | 224 | |
IanBenzMaxim | 73:2cecc1372acc | 225 | ISha256MacCoproc::CmdResult DS2465::computeSlaveSecret(const DevicePage & devicePage, const DeviceScratchpad & deviceScratchpad, const SlaveSecretData & slaveSecretData) |
IanBenzMaxim | 21:00c94aeb533e | 226 | { |
IanBenzMaxim | 74:23be10c32fa3 | 227 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 78:0cbbac7f2016 | 228 | int addr = Scratchpad; |
IanBenzMaxim | 74:23be10c32fa3 | 229 | // Write input data to scratchpad |
j3 | 139:f0e0a7976846 | 230 | result = writeMemory(addr, devicePage.data(), devicePage.size()); |
IanBenzMaxim | 74:23be10c32fa3 | 231 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 232 | { |
j3 | 139:f0e0a7976846 | 233 | addr += devicePage.size(); |
j3 | 139:f0e0a7976846 | 234 | result = writeMemory(addr, deviceScratchpad.data(), deviceScratchpad.size()); |
IanBenzMaxim | 74:23be10c32fa3 | 235 | } |
IanBenzMaxim | 74:23be10c32fa3 | 236 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 237 | { |
j3 | 139:f0e0a7976846 | 238 | addr += deviceScratchpad.size(); |
j3 | 139:f0e0a7976846 | 239 | result = writeMemory(addr, slaveSecretData.data(), slaveSecretData.size()); |
IanBenzMaxim | 74:23be10c32fa3 | 240 | } |
IanBenzMaxim | 74:23be10c32fa3 | 241 | // Compute secret |
IanBenzMaxim | 74:23be10c32fa3 | 242 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 243 | { |
IanBenzMaxim | 74:23be10c32fa3 | 244 | result = computeSlaveSecret(); |
IanBenzMaxim | 74:23be10c32fa3 | 245 | } |
IanBenzMaxim | 74:23be10c32fa3 | 246 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 247 | { |
IanBenzMaxim | 74:23be10c32fa3 | 248 | wait_ms(shaComputationDelayMs * 2); |
IanBenzMaxim | 74:23be10c32fa3 | 249 | } |
IanBenzMaxim | 74:23be10c32fa3 | 250 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 251 | } |
IanBenzMaxim | 21:00c94aeb533e | 252 | |
IanBenzMaxim | 74:23be10c32fa3 | 253 | OneWireMaster::CmdResult DS2465::copyScratchpad(bool destSecret, unsigned int pageNum, bool notFull, unsigned int segmentNum) |
IanBenzMaxim | 21:00c94aeb533e | 254 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 255 | uint8_t command[2] = { CopyScratchpadCmd, (uint8_t)(destSecret ? 0 : (0x80 | (pageNum << 4) | (notFull << 3) | segmentNum)) }; |
IanBenzMaxim | 78:0cbbac7f2016 | 256 | return writeMemory(CommandReg, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 257 | } |
IanBenzMaxim | 21:00c94aeb533e | 258 | |
IanBenzMaxim | 34:11fffbe98ef9 | 259 | OneWireMaster::CmdResult DS2465::configureLevel(OWLevel level) |
IanBenzMaxim | 26:a361e3f42ba5 | 260 | { |
IanBenzMaxim | 74:23be10c32fa3 | 261 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 75:8b627804927c | 262 | if (m_curConfig.getSPU() != (level == StrongLevel)) |
IanBenzMaxim | 74:23be10c32fa3 | 263 | { |
IanBenzMaxim | 74:23be10c32fa3 | 264 | Config newConfig = m_curConfig; |
IanBenzMaxim | 75:8b627804927c | 265 | newConfig.setSPU(level == StrongLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 266 | result = writeConfig(newConfig, true); |
IanBenzMaxim | 74:23be10c32fa3 | 267 | } |
IanBenzMaxim | 74:23be10c32fa3 | 268 | else |
IanBenzMaxim | 74:23be10c32fa3 | 269 | { |
IanBenzMaxim | 74:23be10c32fa3 | 270 | result = OneWireMaster::Success; |
IanBenzMaxim | 74:23be10c32fa3 | 271 | } |
IanBenzMaxim | 74:23be10c32fa3 | 272 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 273 | } |
IanBenzMaxim | 21:00c94aeb533e | 274 | |
IanBenzMaxim | 75:8b627804927c | 275 | OneWireMaster::CmdResult DS2465::OWSetLevel(OWLevel newLevel) |
IanBenzMaxim | 21:00c94aeb533e | 276 | { |
IanBenzMaxim | 75:8b627804927c | 277 | if (newLevel == StrongLevel) |
IanBenzMaxim | 74:23be10c32fa3 | 278 | { |
IanBenzMaxim | 74:23be10c32fa3 | 279 | return OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 280 | } |
IanBenzMaxim | 74:23be10c32fa3 | 281 | |
IanBenzMaxim | 75:8b627804927c | 282 | return configureLevel(newLevel); |
IanBenzMaxim | 21:00c94aeb533e | 283 | } |
IanBenzMaxim | 21:00c94aeb533e | 284 | |
IanBenzMaxim | 75:8b627804927c | 285 | OneWireMaster::CmdResult DS2465::OWSetSpeed(OWSpeed newSpeed) |
IanBenzMaxim | 21:00c94aeb533e | 286 | { |
IanBenzMaxim | 74:23be10c32fa3 | 287 | // Requested speed is already set |
IanBenzMaxim | 75:8b627804927c | 288 | if (m_curConfig.get1WS() == (newSpeed == OverdriveSpeed)) |
IanBenzMaxim | 74:23be10c32fa3 | 289 | { |
IanBenzMaxim | 74:23be10c32fa3 | 290 | return OneWireMaster::Success; |
IanBenzMaxim | 74:23be10c32fa3 | 291 | } |
IanBenzMaxim | 21:00c94aeb533e | 292 | |
IanBenzMaxim | 74:23be10c32fa3 | 293 | // set the speed |
IanBenzMaxim | 74:23be10c32fa3 | 294 | Config newConfig = m_curConfig; |
IanBenzMaxim | 75:8b627804927c | 295 | newConfig.set1WS(newSpeed == OverdriveSpeed); |
IanBenzMaxim | 74:23be10c32fa3 | 296 | |
IanBenzMaxim | 74:23be10c32fa3 | 297 | // write the new config |
IanBenzMaxim | 74:23be10c32fa3 | 298 | return writeConfig(newConfig, true); |
IanBenzMaxim | 21:00c94aeb533e | 299 | } |
IanBenzMaxim | 21:00c94aeb533e | 300 | |
IanBenzMaxim | 75:8b627804927c | 301 | OneWireMaster::CmdResult DS2465::OWTriplet(SearchDirection & searchDirection, uint8_t & sbr, uint8_t & tsb) |
IanBenzMaxim | 21:00c94aeb533e | 302 | { |
IanBenzMaxim | 74:23be10c32fa3 | 303 | // 1-Wire Triplet (Case B) |
IanBenzMaxim | 74:23be10c32fa3 | 304 | // S AD,0 [A] 1WT [A] SS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 305 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 306 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 307 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 308 | // SS indicates byte containing search direction bit value in msbit |
IanBenzMaxim | 74:23be10c32fa3 | 309 | |
IanBenzMaxim | 74:23be10c32fa3 | 310 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 78:0cbbac7f2016 | 311 | uint8_t command[2] = { OwTripletCmd, (uint8_t)((searchDirection == WriteOne) ? 0x80 : 0x00) }; |
IanBenzMaxim | 78:0cbbac7f2016 | 312 | result = writeMemory(CommandReg, command, 2); |
IanBenzMaxim | 32:bce180b544ed | 313 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 32:bce180b544ed | 314 | { |
IanBenzMaxim | 74:23be10c32fa3 | 315 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 316 | result = pollBusy(&status); |
IanBenzMaxim | 74:23be10c32fa3 | 317 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 318 | { |
IanBenzMaxim | 74:23be10c32fa3 | 319 | // check bit results in status byte |
IanBenzMaxim | 78:0cbbac7f2016 | 320 | sbr = ((status & Status_SBR) == Status_SBR); |
IanBenzMaxim | 78:0cbbac7f2016 | 321 | tsb = ((status & Status_TSB) == Status_TSB); |
IanBenzMaxim | 78:0cbbac7f2016 | 322 | searchDirection = ((status & Status_DIR) == Status_DIR) ? WriteOne : WriteZero; |
IanBenzMaxim | 74:23be10c32fa3 | 323 | } |
IanBenzMaxim | 32:bce180b544ed | 324 | } |
IanBenzMaxim | 74:23be10c32fa3 | 325 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 326 | } |
IanBenzMaxim | 21:00c94aeb533e | 327 | |
j3 | 141:cf38f48a2a49 | 328 | OneWireMaster::CmdResult DS2465::OWReadBlock(uint8_t *recvBuf, size_t recvLen) |
IanBenzMaxim | 21:00c94aeb533e | 329 | { |
IanBenzMaxim | 74:23be10c32fa3 | 330 | // 1-Wire Receive Block (Case A) |
IanBenzMaxim | 78:0cbbac7f2016 | 331 | // S AD,0 [A] CommandReg [A] 1WRF [A] PR [A] P |
IanBenzMaxim | 74:23be10c32fa3 | 332 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 333 | // PR indicates byte containing parameter |
IanBenzMaxim | 74:23be10c32fa3 | 334 | |
j3 | 141:cf38f48a2a49 | 335 | OneWireMaster::CmdResult result = OneWireMaster::Success; |
j3 | 141:cf38f48a2a49 | 336 | for (size_t i = 0; (i < recvLen) && (result == OneWireMaster::Success); i += maxBlockSize) |
IanBenzMaxim | 74:23be10c32fa3 | 337 | { |
j3 | 141:cf38f48a2a49 | 338 | uint8_t command[2] = { OwReceiveBlockCmd, std::min(static_cast<uint8_t>(recvLen - i), maxBlockSize) }; |
j3 | 141:cf38f48a2a49 | 339 | result = writeMemory(CommandReg, command, 2); |
j3 | 141:cf38f48a2a49 | 340 | if (result == OneWireMaster::Success) |
j3 | 141:cf38f48a2a49 | 341 | { |
j3 | 141:cf38f48a2a49 | 342 | result = pollBusy(); |
j3 | 141:cf38f48a2a49 | 343 | } |
j3 | 141:cf38f48a2a49 | 344 | if (result == OneWireMaster::Success) |
j3 | 141:cf38f48a2a49 | 345 | { |
j3 | 141:cf38f48a2a49 | 346 | result = readMemory(Scratchpad, recvBuf + i, command[1], false); |
j3 | 141:cf38f48a2a49 | 347 | } |
IanBenzMaxim | 74:23be10c32fa3 | 348 | } |
IanBenzMaxim | 74:23be10c32fa3 | 349 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 350 | } |
IanBenzMaxim | 21:00c94aeb533e | 351 | |
j3 | 141:cf38f48a2a49 | 352 | OneWireMaster::CmdResult DS2465::OWWriteBlock(const uint8_t *sendBuf, size_t sendLen) |
IanBenzMaxim | 21:00c94aeb533e | 353 | { |
j3 | 141:cf38f48a2a49 | 354 | OneWireMaster::CmdResult result = OneWireMaster::Success; |
j3 | 141:cf38f48a2a49 | 355 | for (size_t i = 0; (i < sendLen) && (result == OneWireMaster::Success); i += maxBlockSize) |
j3 | 141:cf38f48a2a49 | 356 | { |
j3 | 141:cf38f48a2a49 | 357 | uint8_t command[2] = { OwTransmitBlockCmd, std::min(static_cast<uint8_t>(sendLen - i), maxBlockSize) }; |
j3 | 141:cf38f48a2a49 | 358 | |
j3 | 141:cf38f48a2a49 | 359 | // prefill scratchpad with required data |
j3 | 141:cf38f48a2a49 | 360 | result = writeMemory(Scratchpad, sendBuf + i, command[1]); |
j3 | 141:cf38f48a2a49 | 361 | |
j3 | 141:cf38f48a2a49 | 362 | // 1-Wire Transmit Block (Case A) |
j3 | 141:cf38f48a2a49 | 363 | // S AD,0 [A] CommandReg [A] 1WTB [A] PR [A] P |
j3 | 141:cf38f48a2a49 | 364 | // [] indicates from slave |
j3 | 141:cf38f48a2a49 | 365 | // PR indicates byte containing parameter |
j3 | 141:cf38f48a2a49 | 366 | if (result == OneWireMaster::Success) |
j3 | 141:cf38f48a2a49 | 367 | { |
j3 | 141:cf38f48a2a49 | 368 | result = writeMemory(CommandReg, command, 2); |
j3 | 141:cf38f48a2a49 | 369 | } |
j3 | 141:cf38f48a2a49 | 370 | if (result == OneWireMaster::Success) |
j3 | 141:cf38f48a2a49 | 371 | { |
j3 | 141:cf38f48a2a49 | 372 | result = pollBusy(); |
j3 | 141:cf38f48a2a49 | 373 | } |
j3 | 141:cf38f48a2a49 | 374 | } |
j3 | 141:cf38f48a2a49 | 375 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 376 | } |
IanBenzMaxim | 21:00c94aeb533e | 377 | |
IanBenzMaxim | 47:307dc45952db | 378 | OneWireMaster::CmdResult DS2465::OWWriteBlockMac() |
IanBenzMaxim | 47:307dc45952db | 379 | { |
IanBenzMaxim | 74:23be10c32fa3 | 380 | // 1-Wire Transmit Block (Case A) |
IanBenzMaxim | 78:0cbbac7f2016 | 381 | // S AD,0 [A] CommandReg [A] 1WTB [A] PR [A] P |
IanBenzMaxim | 74:23be10c32fa3 | 382 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 383 | // PR indicates byte containing parameter |
IanBenzMaxim | 74:23be10c32fa3 | 384 | |
j3 | 141:cf38f48a2a49 | 385 | uint8_t command[2] = { OwTransmitBlockCmd, 0xFF }; |
j3 | 141:cf38f48a2a49 | 386 | OneWireMaster::CmdResult result = writeMemory(CommandReg, command, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 387 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 388 | { |
IanBenzMaxim | 74:23be10c32fa3 | 389 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 390 | } |
IanBenzMaxim | 74:23be10c32fa3 | 391 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 392 | } |
IanBenzMaxim | 21:00c94aeb533e | 393 | |
IanBenzMaxim | 75:8b627804927c | 394 | OneWireMaster::CmdResult DS2465::OWReadByteSetLevel(uint8_t & recvByte, OWLevel afterLevel) |
IanBenzMaxim | 21:00c94aeb533e | 395 | { |
IanBenzMaxim | 74:23be10c32fa3 | 396 | // 1-Wire Read Bytes (Case C) |
IanBenzMaxim | 78:0cbbac7f2016 | 397 | // S AD,0 [A] CommandReg [A] 1WRB [A] Sr AD,1 [A] [Status] A [Status] A |
IanBenzMaxim | 74:23be10c32fa3 | 398 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 399 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 400 | // Sr AD,0 [A] SRP [A] E1 [A] Sr AD,1 [A] DD A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 401 | // |
IanBenzMaxim | 74:23be10c32fa3 | 402 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 403 | // DD data read |
IanBenzMaxim | 74:23be10c32fa3 | 404 | |
IanBenzMaxim | 74:23be10c32fa3 | 405 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 406 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 407 | |
IanBenzMaxim | 75:8b627804927c | 408 | result = configureLevel(afterLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 409 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 410 | { |
IanBenzMaxim | 74:23be10c32fa3 | 411 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 412 | } |
IanBenzMaxim | 74:23be10c32fa3 | 413 | |
IanBenzMaxim | 78:0cbbac7f2016 | 414 | buf = OwReadByteCmd; |
IanBenzMaxim | 78:0cbbac7f2016 | 415 | result = writeMemory(CommandReg, &buf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 416 | |
IanBenzMaxim | 74:23be10c32fa3 | 417 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 418 | { |
IanBenzMaxim | 74:23be10c32fa3 | 419 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 420 | } |
IanBenzMaxim | 74:23be10c32fa3 | 421 | |
IanBenzMaxim | 74:23be10c32fa3 | 422 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 423 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 424 | result = readMemory(ReadDataReg, &buf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 425 | } |
IanBenzMaxim | 74:23be10c32fa3 | 426 | |
IanBenzMaxim | 74:23be10c32fa3 | 427 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 428 | { |
IanBenzMaxim | 75:8b627804927c | 429 | recvByte = buf; |
IanBenzMaxim | 74:23be10c32fa3 | 430 | } |
IanBenzMaxim | 74:23be10c32fa3 | 431 | |
IanBenzMaxim | 26:a361e3f42ba5 | 432 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 433 | } |
IanBenzMaxim | 21:00c94aeb533e | 434 | |
IanBenzMaxim | 75:8b627804927c | 435 | OneWireMaster::CmdResult DS2465::OWWriteByteSetLevel(uint8_t sendByte, OWLevel afterLevel) |
IanBenzMaxim | 74:23be10c32fa3 | 436 | { |
IanBenzMaxim | 74:23be10c32fa3 | 437 | // 1-Wire Write Byte (Case B) |
IanBenzMaxim | 78:0cbbac7f2016 | 438 | // S AD,0 [A] CommandReg [A] 1WWB [A] DD [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 439 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 440 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 441 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 442 | // DD data to write |
IanBenzMaxim | 74:23be10c32fa3 | 443 | |
IanBenzMaxim | 74:23be10c32fa3 | 444 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 445 | |
IanBenzMaxim | 75:8b627804927c | 446 | result = configureLevel(afterLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 447 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 448 | { |
IanBenzMaxim | 74:23be10c32fa3 | 449 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 450 | } |
IanBenzMaxim | 74:23be10c32fa3 | 451 | |
IanBenzMaxim | 78:0cbbac7f2016 | 452 | uint8_t command[2] = { OwWriteByteCmd, sendByte }; |
IanBenzMaxim | 74:23be10c32fa3 | 453 | |
IanBenzMaxim | 78:0cbbac7f2016 | 454 | result = writeMemory(CommandReg, command, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 455 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 456 | { |
IanBenzMaxim | 74:23be10c32fa3 | 457 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 458 | } |
IanBenzMaxim | 74:23be10c32fa3 | 459 | |
IanBenzMaxim | 26:a361e3f42ba5 | 460 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 461 | } |
IanBenzMaxim | 21:00c94aeb533e | 462 | |
IanBenzMaxim | 75:8b627804927c | 463 | OneWireMaster::CmdResult DS2465::OWTouchBitSetLevel(uint8_t & sendRecvBit, OWLevel afterLevel) |
IanBenzMaxim | 21:00c94aeb533e | 464 | { |
IanBenzMaxim | 74:23be10c32fa3 | 465 | // 1-Wire bit (Case B) |
IanBenzMaxim | 78:0cbbac7f2016 | 466 | // S AD,0 [A] CommandReg [A] 1WSB [A] BB [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 467 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 468 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 469 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 470 | // BB indicates byte containing bit value in msbit |
IanBenzMaxim | 74:23be10c32fa3 | 471 | |
IanBenzMaxim | 74:23be10c32fa3 | 472 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 473 | |
IanBenzMaxim | 75:8b627804927c | 474 | result = configureLevel(afterLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 475 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 476 | { |
IanBenzMaxim | 74:23be10c32fa3 | 477 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 478 | } |
IanBenzMaxim | 21:00c94aeb533e | 479 | |
IanBenzMaxim | 78:0cbbac7f2016 | 480 | uint8_t command[2] = { OwSingleBitCmd, (uint8_t)(sendRecvBit ? 0x80 : 0x00) }; |
IanBenzMaxim | 74:23be10c32fa3 | 481 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 482 | |
IanBenzMaxim | 78:0cbbac7f2016 | 483 | result = writeMemory(CommandReg, command, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 484 | |
IanBenzMaxim | 74:23be10c32fa3 | 485 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 486 | { |
IanBenzMaxim | 74:23be10c32fa3 | 487 | result = pollBusy(&status); |
IanBenzMaxim | 74:23be10c32fa3 | 488 | } |
IanBenzMaxim | 74:23be10c32fa3 | 489 | |
IanBenzMaxim | 74:23be10c32fa3 | 490 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 491 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 492 | sendRecvBit = (status & Status_SBR); |
IanBenzMaxim | 74:23be10c32fa3 | 493 | } |
IanBenzMaxim | 74:23be10c32fa3 | 494 | |
IanBenzMaxim | 26:a361e3f42ba5 | 495 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 496 | } |
IanBenzMaxim | 21:00c94aeb533e | 497 | |
IanBenzMaxim | 73:2cecc1372acc | 498 | OneWireMaster::CmdResult DS2465::cWriteMemory(uint8_t addr, const uint8_t * buf, size_t bufLen) const |
IanBenzMaxim | 21:00c94aeb533e | 499 | { |
IanBenzMaxim | 74:23be10c32fa3 | 500 | // Write SRAM (Case A) |
IanBenzMaxim | 74:23be10c32fa3 | 501 | // S AD,0 [A] VSA [A] DD [A] P |
IanBenzMaxim | 74:23be10c32fa3 | 502 | // \-----/ |
IanBenzMaxim | 74:23be10c32fa3 | 503 | // Repeat for each data byte |
IanBenzMaxim | 74:23be10c32fa3 | 504 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 505 | // VSA valid SRAM memory address |
IanBenzMaxim | 74:23be10c32fa3 | 506 | // DD memory data to write |
IanBenzMaxim | 74:23be10c32fa3 | 507 | |
IanBenzMaxim | 74:23be10c32fa3 | 508 | m_I2C_interface.start(); |
IanBenzMaxim | 74:23be10c32fa3 | 509 | if (m_I2C_interface.write((m_I2C_address | I2C_WRITE)) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 510 | { |
IanBenzMaxim | 21:00c94aeb533e | 511 | m_I2C_interface.stop(); |
IanBenzMaxim | 21:00c94aeb533e | 512 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 513 | } |
IanBenzMaxim | 74:23be10c32fa3 | 514 | if (m_I2C_interface.write(addr) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 515 | { |
IanBenzMaxim | 74:23be10c32fa3 | 516 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 517 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 518 | } |
IanBenzMaxim | 74:23be10c32fa3 | 519 | // loop to write each byte |
IanBenzMaxim | 120:200109b73e3c | 520 | for (size_t i = 0; i < bufLen; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 521 | { |
IanBenzMaxim | 74:23be10c32fa3 | 522 | if (m_I2C_interface.write(buf[i]) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 523 | { |
IanBenzMaxim | 74:23be10c32fa3 | 524 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 525 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 526 | } |
IanBenzMaxim | 74:23be10c32fa3 | 527 | } |
IanBenzMaxim | 74:23be10c32fa3 | 528 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 529 | |
IanBenzMaxim | 74:23be10c32fa3 | 530 | return OneWireMaster::Success; |
IanBenzMaxim | 21:00c94aeb533e | 531 | } |
IanBenzMaxim | 21:00c94aeb533e | 532 | |
IanBenzMaxim | 73:2cecc1372acc | 533 | OneWireMaster::CmdResult DS2465::readMemory(uint8_t addr, uint8_t * buf, size_t bufLen, bool skipSetPointer) const |
IanBenzMaxim | 21:00c94aeb533e | 534 | { |
IanBenzMaxim | 74:23be10c32fa3 | 535 | // Read (Case A) |
IanBenzMaxim | 74:23be10c32fa3 | 536 | // S AD,0 [A] MA [A] Sr AD,1 [A] [DD] A [DD] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 537 | // \-----/ |
IanBenzMaxim | 74:23be10c32fa3 | 538 | // Repeat for each data byte, NAK last byte |
IanBenzMaxim | 74:23be10c32fa3 | 539 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 540 | // MA memory address |
IanBenzMaxim | 74:23be10c32fa3 | 541 | // DD memory data read |
IanBenzMaxim | 21:00c94aeb533e | 542 | |
IanBenzMaxim | 74:23be10c32fa3 | 543 | m_I2C_interface.start(); |
IanBenzMaxim | 74:23be10c32fa3 | 544 | if (!skipSetPointer) |
IanBenzMaxim | 74:23be10c32fa3 | 545 | { |
IanBenzMaxim | 74:23be10c32fa3 | 546 | if (m_I2C_interface.write((m_I2C_address | I2C_WRITE)) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 547 | { |
IanBenzMaxim | 74:23be10c32fa3 | 548 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 549 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 550 | } |
IanBenzMaxim | 74:23be10c32fa3 | 551 | if (m_I2C_interface.write(addr) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 552 | { |
IanBenzMaxim | 74:23be10c32fa3 | 553 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 554 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 555 | } |
IanBenzMaxim | 74:23be10c32fa3 | 556 | m_I2C_interface.start(); |
IanBenzMaxim | 74:23be10c32fa3 | 557 | } |
IanBenzMaxim | 21:00c94aeb533e | 558 | |
IanBenzMaxim | 74:23be10c32fa3 | 559 | if (m_I2C_interface.write((m_I2C_address | I2C_READ)) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 560 | { |
IanBenzMaxim | 47:307dc45952db | 561 | m_I2C_interface.stop(); |
IanBenzMaxim | 47:307dc45952db | 562 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 563 | } |
IanBenzMaxim | 74:23be10c32fa3 | 564 | // loop to read each byte, NAK last byte |
IanBenzMaxim | 120:200109b73e3c | 565 | for (size_t i = 0; i < bufLen; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 566 | { |
IanBenzMaxim | 74:23be10c32fa3 | 567 | buf[i] = m_I2C_interface.read((i == (bufLen - 1)) ? mbed::I2C::NoACK : mbed::I2C::ACK); |
IanBenzMaxim | 74:23be10c32fa3 | 568 | } |
IanBenzMaxim | 74:23be10c32fa3 | 569 | m_I2C_interface.stop(); |
IanBenzMaxim | 21:00c94aeb533e | 570 | |
IanBenzMaxim | 74:23be10c32fa3 | 571 | return OneWireMaster::Success; |
IanBenzMaxim | 21:00c94aeb533e | 572 | } |
IanBenzMaxim | 21:00c94aeb533e | 573 | |
IanBenzMaxim | 34:11fffbe98ef9 | 574 | OneWireMaster::CmdResult DS2465::writeConfig(const Config & config, bool verify) |
IanBenzMaxim | 21:00c94aeb533e | 575 | { |
IanBenzMaxim | 74:23be10c32fa3 | 576 | uint8_t configBuf; |
IanBenzMaxim | 74:23be10c32fa3 | 577 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 578 | |
IanBenzMaxim | 74:23be10c32fa3 | 579 | configBuf = config.writeByte(); |
IanBenzMaxim | 78:0cbbac7f2016 | 580 | result = writeMemory(ConfigReg, &configBuf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 581 | if (verify) |
IanBenzMaxim | 74:23be10c32fa3 | 582 | { |
IanBenzMaxim | 74:23be10c32fa3 | 583 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 584 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 585 | result = readMemory(ConfigReg, &configBuf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 586 | } |
IanBenzMaxim | 74:23be10c32fa3 | 587 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 588 | { |
IanBenzMaxim | 74:23be10c32fa3 | 589 | if (configBuf != config.readByte()) |
IanBenzMaxim | 74:23be10c32fa3 | 590 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 591 | } |
IanBenzMaxim | 74:23be10c32fa3 | 592 | } |
IanBenzMaxim | 74:23be10c32fa3 | 593 | |
IanBenzMaxim | 35:5d23395628f6 | 594 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 35:5d23395628f6 | 595 | { |
IanBenzMaxim | 74:23be10c32fa3 | 596 | m_curConfig = config; |
IanBenzMaxim | 35:5d23395628f6 | 597 | } |
IanBenzMaxim | 35:5d23395628f6 | 598 | |
IanBenzMaxim | 74:23be10c32fa3 | 599 | return result; |
IanBenzMaxim | 24:8942d8478d68 | 600 | } |
IanBenzMaxim | 24:8942d8478d68 | 601 | |
IanBenzMaxim | 73:2cecc1372acc | 602 | OneWireMaster::CmdResult DS2465::pollBusy(uint8_t * pStatus) |
IanBenzMaxim | 24:8942d8478d68 | 603 | { |
IanBenzMaxim | 74:23be10c32fa3 | 604 | const unsigned int pollLimit = 200; |
IanBenzMaxim | 74:23be10c32fa3 | 605 | |
IanBenzMaxim | 74:23be10c32fa3 | 606 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 607 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 608 | unsigned int pollCount = 0; |
IanBenzMaxim | 47:307dc45952db | 609 | |
IanBenzMaxim | 74:23be10c32fa3 | 610 | do |
IanBenzMaxim | 74:23be10c32fa3 | 611 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 612 | result = readMemory(StatusReg, &status, 1, true); |
IanBenzMaxim | 74:23be10c32fa3 | 613 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 614 | { |
IanBenzMaxim | 74:23be10c32fa3 | 615 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 616 | } |
IanBenzMaxim | 74:23be10c32fa3 | 617 | if (pStatus != NULL) |
IanBenzMaxim | 74:23be10c32fa3 | 618 | { |
IanBenzMaxim | 74:23be10c32fa3 | 619 | *pStatus = status; |
IanBenzMaxim | 74:23be10c32fa3 | 620 | } |
IanBenzMaxim | 74:23be10c32fa3 | 621 | if (pollCount++ >= pollLimit) |
IanBenzMaxim | 74:23be10c32fa3 | 622 | { |
IanBenzMaxim | 74:23be10c32fa3 | 623 | return OneWireMaster::TimeoutError; |
IanBenzMaxim | 74:23be10c32fa3 | 624 | } |
IanBenzMaxim | 78:0cbbac7f2016 | 625 | } while (status & Status_1WB); |
IanBenzMaxim | 24:8942d8478d68 | 626 | |
IanBenzMaxim | 74:23be10c32fa3 | 627 | return OneWireMaster::Success; |
IanBenzMaxim | 21:00c94aeb533e | 628 | } |
IanBenzMaxim | 21:00c94aeb533e | 629 | |
IanBenzMaxim | 75:8b627804927c | 630 | OneWireMaster::CmdResult DS2465::OWReset() |
IanBenzMaxim | 74:23be10c32fa3 | 631 | { |
IanBenzMaxim | 74:23be10c32fa3 | 632 | // 1-Wire reset (Case B) |
IanBenzMaxim | 78:0cbbac7f2016 | 633 | // S AD,0 [A] CommandReg [A] 1WRS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 634 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 635 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 636 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 637 | |
IanBenzMaxim | 74:23be10c32fa3 | 638 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 639 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 640 | |
IanBenzMaxim | 78:0cbbac7f2016 | 641 | buf = OwResetCmd; |
IanBenzMaxim | 78:0cbbac7f2016 | 642 | result = writeMemory(CommandReg, &buf, 1); |
IanBenzMaxim | 21:00c94aeb533e | 643 | |
IanBenzMaxim | 74:23be10c32fa3 | 644 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 645 | { |
IanBenzMaxim | 74:23be10c32fa3 | 646 | result = pollBusy(&buf); |
IanBenzMaxim | 74:23be10c32fa3 | 647 | } |
IanBenzMaxim | 21:00c94aeb533e | 648 | |
IanBenzMaxim | 74:23be10c32fa3 | 649 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 650 | { |
IanBenzMaxim | 74:23be10c32fa3 | 651 | // check for presence detect |
IanBenzMaxim | 78:0cbbac7f2016 | 652 | if ((buf & Status_PPD) != Status_PPD) |
IanBenzMaxim | 74:23be10c32fa3 | 653 | { |
IanBenzMaxim | 74:23be10c32fa3 | 654 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 655 | } |
IanBenzMaxim | 74:23be10c32fa3 | 656 | } |
IanBenzMaxim | 74:23be10c32fa3 | 657 | |
IanBenzMaxim | 74:23be10c32fa3 | 658 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 659 | } |
IanBenzMaxim | 21:00c94aeb533e | 660 | |
IanBenzMaxim | 75:8b627804927c | 661 | OneWireMaster::CmdResult DS2465::reset() |
IanBenzMaxim | 74:23be10c32fa3 | 662 | { |
IanBenzMaxim | 74:23be10c32fa3 | 663 | // Device Reset |
IanBenzMaxim | 78:0cbbac7f2016 | 664 | // S AD,0 [A] CommandReg [A] 1WMR [A] Sr AD,1 [A] [SS] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 665 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 666 | // SS status byte to read to verify state |
IanBenzMaxim | 74:23be10c32fa3 | 667 | |
IanBenzMaxim | 74:23be10c32fa3 | 668 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 669 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 670 | |
IanBenzMaxim | 78:0cbbac7f2016 | 671 | buf = DeviceResetCmd; |
IanBenzMaxim | 78:0cbbac7f2016 | 672 | result = writeMemory(CommandReg, &buf, 1); |
IanBenzMaxim | 24:8942d8478d68 | 673 | |
IanBenzMaxim | 74:23be10c32fa3 | 674 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 675 | { |
IanBenzMaxim | 78:0cbbac7f2016 | 676 | result = readMemory(StatusReg, &buf, 1, true); |
IanBenzMaxim | 74:23be10c32fa3 | 677 | } |
IanBenzMaxim | 21:00c94aeb533e | 678 | |
IanBenzMaxim | 74:23be10c32fa3 | 679 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 680 | { |
IanBenzMaxim | 74:23be10c32fa3 | 681 | if ((buf & 0xF7) != 0x10) |
IanBenzMaxim | 74:23be10c32fa3 | 682 | { |
IanBenzMaxim | 74:23be10c32fa3 | 683 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 684 | } |
IanBenzMaxim | 74:23be10c32fa3 | 685 | } |
IanBenzMaxim | 74:23be10c32fa3 | 686 | |
IanBenzMaxim | 74:23be10c32fa3 | 687 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 688 | { |
IanBenzMaxim | 74:23be10c32fa3 | 689 | OWReset(); // do a command to get 1-Wire master reset out of holding state |
IanBenzMaxim | 74:23be10c32fa3 | 690 | } |
IanBenzMaxim | 74:23be10c32fa3 | 691 | |
IanBenzMaxim | 74:23be10c32fa3 | 692 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 693 | } |