Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
Masters/DS2465/DS2465.cpp@76:84e6c4994e29, 2016-05-14 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Sat May 14 14:27:56 2016 -0500
- Revision:
- 76:84e6c4994e29
- Parent:
- 75:8b627804927c
- Child:
- 78:0cbbac7f2016
Move ROM commands outside of OneWireMaster to increase cohesiveness of the class. Do not use subdivide OneWire namespace since it will likely not provide value on this project.
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 | |
IanBenzMaxim | 73:2cecc1372acc | 33 | #include "DS2465.h" |
IanBenzMaxim | 73:2cecc1372acc | 34 | #include "I2C.h" |
IanBenzMaxim | 73:2cecc1372acc | 35 | #include "wait_api.h" |
IanBenzMaxim | 21:00c94aeb533e | 36 | |
IanBenzMaxim | 21:00c94aeb533e | 37 | #define I2C_WRITE 0 |
IanBenzMaxim | 21:00c94aeb533e | 38 | #define I2C_READ 1 |
IanBenzMaxim | 21:00c94aeb533e | 39 | |
IanBenzMaxim | 21:00c94aeb533e | 40 | // DS2465 commands |
IanBenzMaxim | 21:00c94aeb533e | 41 | #define CMD_1WMR 0xF0 |
IanBenzMaxim | 21:00c94aeb533e | 42 | #define CMD_WCFG 0xD2 |
IanBenzMaxim | 21:00c94aeb533e | 43 | #define CMD_CHSL 0xC3 |
IanBenzMaxim | 21:00c94aeb533e | 44 | #define CMD_SRP 0xE1 |
IanBenzMaxim | 21:00c94aeb533e | 45 | |
IanBenzMaxim | 21:00c94aeb533e | 46 | #define CMD_1WRS 0xB4 |
IanBenzMaxim | 21:00c94aeb533e | 47 | #define CMD_1WWB 0xA5 |
IanBenzMaxim | 21:00c94aeb533e | 48 | #define CMD_1WRB 0x96 |
IanBenzMaxim | 21:00c94aeb533e | 49 | #define CMD_1WSB 0x87 |
IanBenzMaxim | 21:00c94aeb533e | 50 | #define CMD_1WT 0x78 |
IanBenzMaxim | 21:00c94aeb533e | 51 | #define CMD_1WTB 0x69 |
IanBenzMaxim | 21:00c94aeb533e | 52 | #define CMD_1WRF 0xE1 |
IanBenzMaxim | 21:00c94aeb533e | 53 | #define CMD_CPS 0x5A |
IanBenzMaxim | 21:00c94aeb533e | 54 | #define CMD_CSS 0x4B |
IanBenzMaxim | 21:00c94aeb533e | 55 | #define CMD_CSAM 0x3C |
IanBenzMaxim | 21:00c94aeb533e | 56 | #define CMD_CSWM 0x2D |
IanBenzMaxim | 21:00c94aeb533e | 57 | #define CMD_CNMS 0x1E |
IanBenzMaxim | 21:00c94aeb533e | 58 | #define CMD_SPR 0x0F |
IanBenzMaxim | 21:00c94aeb533e | 59 | |
IanBenzMaxim | 21:00c94aeb533e | 60 | // DS2465 status bits |
IanBenzMaxim | 21:00c94aeb533e | 61 | #define STATUS_1WB 0x01 |
IanBenzMaxim | 21:00c94aeb533e | 62 | #define STATUS_PPD 0x02 |
IanBenzMaxim | 21:00c94aeb533e | 63 | #define STATUS_SD 0x04 |
IanBenzMaxim | 21:00c94aeb533e | 64 | #define STATUS_LL 0x08 |
IanBenzMaxim | 21:00c94aeb533e | 65 | #define STATUS_RST 0x10 |
IanBenzMaxim | 21:00c94aeb533e | 66 | #define STATUS_SBR 0x20 |
IanBenzMaxim | 21:00c94aeb533e | 67 | #define STATUS_TSB 0x40 |
IanBenzMaxim | 21:00c94aeb533e | 68 | #define STATUS_DIR 0x80 |
IanBenzMaxim | 21:00c94aeb533e | 69 | |
IanBenzMaxim | 76:84e6c4994e29 | 70 | using namespace OneWire; |
IanBenzMaxim | 73:2cecc1372acc | 71 | |
IanBenzMaxim | 21:00c94aeb533e | 72 | static const int I2C_WRITE_OK = 0; |
IanBenzMaxim | 21:00c94aeb533e | 73 | |
IanBenzMaxim | 73:2cecc1372acc | 74 | uint8_t DS2465::Config::readByte() const |
IanBenzMaxim | 24:8942d8478d68 | 75 | { |
IanBenzMaxim | 74:23be10c32fa3 | 76 | uint8_t config = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 77 | if (get1WS()) |
IanBenzMaxim | 74:23be10c32fa3 | 78 | { |
IanBenzMaxim | 74:23be10c32fa3 | 79 | config |= 0x08; |
IanBenzMaxim | 74:23be10c32fa3 | 80 | } |
IanBenzMaxim | 74:23be10c32fa3 | 81 | if (getSPU()) |
IanBenzMaxim | 74:23be10c32fa3 | 82 | { |
IanBenzMaxim | 74:23be10c32fa3 | 83 | config |= 0x04; |
IanBenzMaxim | 74:23be10c32fa3 | 84 | } |
IanBenzMaxim | 74:23be10c32fa3 | 85 | if (getPDN()) |
IanBenzMaxim | 74:23be10c32fa3 | 86 | { |
IanBenzMaxim | 74:23be10c32fa3 | 87 | config |= 0x02; |
IanBenzMaxim | 74:23be10c32fa3 | 88 | } |
IanBenzMaxim | 74:23be10c32fa3 | 89 | if (getAPU()) |
IanBenzMaxim | 74:23be10c32fa3 | 90 | { |
IanBenzMaxim | 74:23be10c32fa3 | 91 | config |= 0x01; |
IanBenzMaxim | 74:23be10c32fa3 | 92 | } |
IanBenzMaxim | 74:23be10c32fa3 | 93 | return config; |
IanBenzMaxim | 24:8942d8478d68 | 94 | } |
IanBenzMaxim | 24:8942d8478d68 | 95 | |
IanBenzMaxim | 73:2cecc1372acc | 96 | uint8_t DS2465::Config::writeByte() const |
IanBenzMaxim | 24:8942d8478d68 | 97 | { |
IanBenzMaxim | 74:23be10c32fa3 | 98 | uint8_t config = readByte(); |
IanBenzMaxim | 74:23be10c32fa3 | 99 | return ((~config << 4) | config); |
IanBenzMaxim | 24:8942d8478d68 | 100 | } |
IanBenzMaxim | 24:8942d8478d68 | 101 | |
IanBenzMaxim | 24:8942d8478d68 | 102 | void DS2465::Config::reset() |
IanBenzMaxim | 24:8942d8478d68 | 103 | { |
IanBenzMaxim | 74:23be10c32fa3 | 104 | set1WS(false); |
IanBenzMaxim | 74:23be10c32fa3 | 105 | setSPU(false); |
IanBenzMaxim | 74:23be10c32fa3 | 106 | setPDN(false); |
IanBenzMaxim | 74:23be10c32fa3 | 107 | setAPU(true); |
IanBenzMaxim | 24:8942d8478d68 | 108 | } |
IanBenzMaxim | 24:8942d8478d68 | 109 | |
IanBenzMaxim | 73:2cecc1372acc | 110 | DS2465::DS2465(mbed::I2C & I2C_interface, uint8_t I2C_address) |
IanBenzMaxim | 74:23be10c32fa3 | 111 | : m_I2C_interface(I2C_interface), m_I2C_address(I2C_address) |
IanBenzMaxim | 21:00c94aeb533e | 112 | { |
IanBenzMaxim | 74:23be10c32fa3 | 113 | |
IanBenzMaxim | 21:00c94aeb533e | 114 | } |
IanBenzMaxim | 21:00c94aeb533e | 115 | |
IanBenzMaxim | 21:00c94aeb533e | 116 | OneWireMaster::CmdResult DS2465::OWInitMaster() |
IanBenzMaxim | 21:00c94aeb533e | 117 | { |
IanBenzMaxim | 74:23be10c32fa3 | 118 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 119 | |
IanBenzMaxim | 74:23be10c32fa3 | 120 | // reset DS2465 |
IanBenzMaxim | 74:23be10c32fa3 | 121 | result = reset(); |
IanBenzMaxim | 74:23be10c32fa3 | 122 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 123 | { |
IanBenzMaxim | 74:23be10c32fa3 | 124 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 125 | } |
IanBenzMaxim | 74:23be10c32fa3 | 126 | |
IanBenzMaxim | 74:23be10c32fa3 | 127 | // write the default configuration setup |
IanBenzMaxim | 74:23be10c32fa3 | 128 | Config defaultConfig; |
IanBenzMaxim | 74:23be10c32fa3 | 129 | result = writeConfig(defaultConfig, true); |
IanBenzMaxim | 47:307dc45952db | 130 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 131 | } |
IanBenzMaxim | 21:00c94aeb533e | 132 | |
IanBenzMaxim | 33:a4c015046956 | 133 | OneWireMaster::CmdResult DS2465::computeNextMasterSecret(bool swap, unsigned int pageNum, PageRegion region) |
IanBenzMaxim | 21:00c94aeb533e | 134 | { |
IanBenzMaxim | 74:23be10c32fa3 | 135 | uint8_t command[2] = { CMD_CNMS, (uint8_t)(swap ? (0xC8 | (pageNum << 4) | region) : 0xBF) }; |
IanBenzMaxim | 74:23be10c32fa3 | 136 | return writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 137 | } |
IanBenzMaxim | 21:00c94aeb533e | 138 | |
IanBenzMaxim | 33:a4c015046956 | 139 | OneWireMaster::CmdResult DS2465::computeWriteMac(bool regwrite, bool swap, unsigned int pageNum, unsigned int segmentNum) const |
IanBenzMaxim | 21:00c94aeb533e | 140 | { |
IanBenzMaxim | 74:23be10c32fa3 | 141 | uint8_t command[2] = { CMD_CSWM, (uint8_t)((regwrite << 7) | (swap << 6) | (pageNum << 4) | segmentNum) }; |
IanBenzMaxim | 74:23be10c32fa3 | 142 | return cWriteMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 143 | } |
IanBenzMaxim | 21:00c94aeb533e | 144 | |
IanBenzMaxim | 33:a4c015046956 | 145 | OneWireMaster::CmdResult DS2465::computeAuthMac(bool swap, unsigned int pageNum, PageRegion region) const |
IanBenzMaxim | 21:00c94aeb533e | 146 | { |
IanBenzMaxim | 74:23be10c32fa3 | 147 | uint8_t command[2] = { CMD_CSAM, (uint8_t)(swap ? (0xC8 | (pageNum << 4) | region) : 0xBF) }; |
IanBenzMaxim | 74:23be10c32fa3 | 148 | return cWriteMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 149 | } |
IanBenzMaxim | 21:00c94aeb533e | 150 | |
IanBenzMaxim | 33:a4c015046956 | 151 | OneWireMaster::CmdResult DS2465::computeSlaveSecret(bool swap, unsigned int pageNum, PageRegion region) |
IanBenzMaxim | 21:00c94aeb533e | 152 | { |
IanBenzMaxim | 74:23be10c32fa3 | 153 | uint8_t command[2] = { CMD_CSS, (uint8_t)(swap ? (0xC8 | (pageNum << 4) | region) : 0xBF) }; |
IanBenzMaxim | 74:23be10c32fa3 | 154 | return writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 155 | } |
IanBenzMaxim | 21:00c94aeb533e | 156 | |
IanBenzMaxim | 73:2cecc1372acc | 157 | ISha256MacCoproc::CmdResult DS2465::setMasterSecret(const Secret & masterSecret) |
IanBenzMaxim | 21:00c94aeb533e | 158 | { |
IanBenzMaxim | 74:23be10c32fa3 | 159 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 160 | result = writeMemory(ADDR_SPAD, masterSecret, masterSecret.length); |
IanBenzMaxim | 74:23be10c32fa3 | 161 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 162 | { |
IanBenzMaxim | 74:23be10c32fa3 | 163 | result = copyScratchpadToSecret(); |
IanBenzMaxim | 74:23be10c32fa3 | 164 | } |
IanBenzMaxim | 74:23be10c32fa3 | 165 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 166 | { |
IanBenzMaxim | 74:23be10c32fa3 | 167 | wait_ms(eepromPageWriteDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 168 | } |
IanBenzMaxim | 74:23be10c32fa3 | 169 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 170 | } |
IanBenzMaxim | 21:00c94aeb533e | 171 | |
IanBenzMaxim | 73:2cecc1372acc | 172 | ISha256MacCoproc::CmdResult DS2465::computeWriteMac(const WriteMacData & writeMacData, Mac & mac) const |
IanBenzMaxim | 21:00c94aeb533e | 173 | { |
IanBenzMaxim | 74:23be10c32fa3 | 174 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 175 | // Write input data to scratchpad |
IanBenzMaxim | 74:23be10c32fa3 | 176 | result = writeScratchpad(writeMacData, writeMacData.length); |
IanBenzMaxim | 74:23be10c32fa3 | 177 | // Compute MAC |
IanBenzMaxim | 74:23be10c32fa3 | 178 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 179 | { |
IanBenzMaxim | 74:23be10c32fa3 | 180 | result = computeWriteMac(false); |
IanBenzMaxim | 74:23be10c32fa3 | 181 | } |
IanBenzMaxim | 74:23be10c32fa3 | 182 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 183 | { |
IanBenzMaxim | 74:23be10c32fa3 | 184 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 185 | // Read MAC from register |
IanBenzMaxim | 74:23be10c32fa3 | 186 | result = readMemory(ADDR_MAC_READ, mac, mac.length, true); |
IanBenzMaxim | 74:23be10c32fa3 | 187 | } |
IanBenzMaxim | 74:23be10c32fa3 | 188 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 189 | } |
IanBenzMaxim | 21:00c94aeb533e | 190 | |
IanBenzMaxim | 73:2cecc1372acc | 191 | ISha256MacCoproc::CmdResult DS2465::computeAuthMac(const DevicePage & devicePage, const DeviceScratchpad & challenge, const AuthMacData & authMacData, Mac & mac) const |
IanBenzMaxim | 21:00c94aeb533e | 192 | { |
IanBenzMaxim | 74:23be10c32fa3 | 193 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 194 | int addr = ADDR_SPAD; |
IanBenzMaxim | 74:23be10c32fa3 | 195 | // Write input data to scratchpad |
IanBenzMaxim | 74:23be10c32fa3 | 196 | result = cWriteMemory(addr, devicePage, devicePage.length); |
IanBenzMaxim | 74:23be10c32fa3 | 197 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 198 | { |
IanBenzMaxim | 74:23be10c32fa3 | 199 | addr += devicePage.length; |
IanBenzMaxim | 74:23be10c32fa3 | 200 | result = cWriteMemory(addr, challenge, challenge.length); |
IanBenzMaxim | 74:23be10c32fa3 | 201 | } |
IanBenzMaxim | 74:23be10c32fa3 | 202 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 203 | { |
IanBenzMaxim | 74:23be10c32fa3 | 204 | addr += challenge.length; |
IanBenzMaxim | 74:23be10c32fa3 | 205 | result = cWriteMemory(addr, authMacData, authMacData.length); |
IanBenzMaxim | 74:23be10c32fa3 | 206 | } |
IanBenzMaxim | 74:23be10c32fa3 | 207 | // Compute MAC |
IanBenzMaxim | 74:23be10c32fa3 | 208 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 209 | { |
IanBenzMaxim | 74:23be10c32fa3 | 210 | result = computeAuthMac(); |
IanBenzMaxim | 74:23be10c32fa3 | 211 | } |
IanBenzMaxim | 74:23be10c32fa3 | 212 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 213 | { |
IanBenzMaxim | 74:23be10c32fa3 | 214 | wait_ms(shaComputationDelayMs * 2); |
IanBenzMaxim | 74:23be10c32fa3 | 215 | // Read MAC from register |
IanBenzMaxim | 74:23be10c32fa3 | 216 | result = readMemory(ADDR_MAC_READ, mac, mac.length, true); |
IanBenzMaxim | 74:23be10c32fa3 | 217 | } |
IanBenzMaxim | 74:23be10c32fa3 | 218 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 219 | } |
IanBenzMaxim | 21:00c94aeb533e | 220 | |
IanBenzMaxim | 73:2cecc1372acc | 221 | ISha256MacCoproc::CmdResult DS2465::computeSlaveSecret(const DevicePage & devicePage, const DeviceScratchpad & deviceScratchpad, const SlaveSecretData & slaveSecretData) |
IanBenzMaxim | 21:00c94aeb533e | 222 | { |
IanBenzMaxim | 74:23be10c32fa3 | 223 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 224 | int addr = ADDR_SPAD; |
IanBenzMaxim | 74:23be10c32fa3 | 225 | // Write input data to scratchpad |
IanBenzMaxim | 74:23be10c32fa3 | 226 | result = writeMemory(addr, devicePage, devicePage.length); |
IanBenzMaxim | 74:23be10c32fa3 | 227 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 228 | { |
IanBenzMaxim | 74:23be10c32fa3 | 229 | addr += devicePage.length; |
IanBenzMaxim | 74:23be10c32fa3 | 230 | result = writeMemory(addr, deviceScratchpad, deviceScratchpad.length); |
IanBenzMaxim | 74:23be10c32fa3 | 231 | } |
IanBenzMaxim | 74:23be10c32fa3 | 232 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 233 | { |
IanBenzMaxim | 74:23be10c32fa3 | 234 | addr += deviceScratchpad.length; |
IanBenzMaxim | 74:23be10c32fa3 | 235 | result = writeMemory(addr, slaveSecretData, slaveSecretData.length); |
IanBenzMaxim | 74:23be10c32fa3 | 236 | } |
IanBenzMaxim | 74:23be10c32fa3 | 237 | // Compute secret |
IanBenzMaxim | 74:23be10c32fa3 | 238 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 239 | { |
IanBenzMaxim | 74:23be10c32fa3 | 240 | result = computeSlaveSecret(); |
IanBenzMaxim | 74:23be10c32fa3 | 241 | } |
IanBenzMaxim | 74:23be10c32fa3 | 242 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 243 | { |
IanBenzMaxim | 74:23be10c32fa3 | 244 | wait_ms(shaComputationDelayMs * 2); |
IanBenzMaxim | 74:23be10c32fa3 | 245 | } |
IanBenzMaxim | 74:23be10c32fa3 | 246 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 247 | } |
IanBenzMaxim | 21:00c94aeb533e | 248 | |
IanBenzMaxim | 74:23be10c32fa3 | 249 | OneWireMaster::CmdResult DS2465::copyScratchpad(bool destSecret, unsigned int pageNum, bool notFull, unsigned int segmentNum) |
IanBenzMaxim | 21:00c94aeb533e | 250 | { |
IanBenzMaxim | 74:23be10c32fa3 | 251 | uint8_t command[2] = { CMD_CPS, (uint8_t)(destSecret ? 0 : (0x80 | (pageNum << 4) | (notFull << 3) | segmentNum)) }; |
IanBenzMaxim | 74:23be10c32fa3 | 252 | return writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 253 | } |
IanBenzMaxim | 21:00c94aeb533e | 254 | |
IanBenzMaxim | 34:11fffbe98ef9 | 255 | OneWireMaster::CmdResult DS2465::configureLevel(OWLevel level) |
IanBenzMaxim | 26:a361e3f42ba5 | 256 | { |
IanBenzMaxim | 74:23be10c32fa3 | 257 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 75:8b627804927c | 258 | if (m_curConfig.getSPU() != (level == StrongLevel)) |
IanBenzMaxim | 74:23be10c32fa3 | 259 | { |
IanBenzMaxim | 74:23be10c32fa3 | 260 | Config newConfig = m_curConfig; |
IanBenzMaxim | 75:8b627804927c | 261 | newConfig.setSPU(level == StrongLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 262 | result = writeConfig(newConfig, true); |
IanBenzMaxim | 74:23be10c32fa3 | 263 | } |
IanBenzMaxim | 74:23be10c32fa3 | 264 | else |
IanBenzMaxim | 74:23be10c32fa3 | 265 | { |
IanBenzMaxim | 74:23be10c32fa3 | 266 | result = OneWireMaster::Success; |
IanBenzMaxim | 74:23be10c32fa3 | 267 | } |
IanBenzMaxim | 74:23be10c32fa3 | 268 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 269 | } |
IanBenzMaxim | 21:00c94aeb533e | 270 | |
IanBenzMaxim | 75:8b627804927c | 271 | OneWireMaster::CmdResult DS2465::OWSetLevel(OWLevel newLevel) |
IanBenzMaxim | 21:00c94aeb533e | 272 | { |
IanBenzMaxim | 75:8b627804927c | 273 | if (newLevel == StrongLevel) |
IanBenzMaxim | 74:23be10c32fa3 | 274 | { |
IanBenzMaxim | 74:23be10c32fa3 | 275 | return OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 276 | } |
IanBenzMaxim | 74:23be10c32fa3 | 277 | |
IanBenzMaxim | 75:8b627804927c | 278 | return configureLevel(newLevel); |
IanBenzMaxim | 21:00c94aeb533e | 279 | } |
IanBenzMaxim | 21:00c94aeb533e | 280 | |
IanBenzMaxim | 75:8b627804927c | 281 | OneWireMaster::CmdResult DS2465::OWSetSpeed(OWSpeed newSpeed) |
IanBenzMaxim | 21:00c94aeb533e | 282 | { |
IanBenzMaxim | 74:23be10c32fa3 | 283 | // Requested speed is already set |
IanBenzMaxim | 75:8b627804927c | 284 | if (m_curConfig.get1WS() == (newSpeed == OverdriveSpeed)) |
IanBenzMaxim | 74:23be10c32fa3 | 285 | { |
IanBenzMaxim | 74:23be10c32fa3 | 286 | return OneWireMaster::Success; |
IanBenzMaxim | 74:23be10c32fa3 | 287 | } |
IanBenzMaxim | 21:00c94aeb533e | 288 | |
IanBenzMaxim | 74:23be10c32fa3 | 289 | // set the speed |
IanBenzMaxim | 74:23be10c32fa3 | 290 | Config newConfig = m_curConfig; |
IanBenzMaxim | 75:8b627804927c | 291 | newConfig.set1WS(newSpeed == OverdriveSpeed); |
IanBenzMaxim | 74:23be10c32fa3 | 292 | |
IanBenzMaxim | 74:23be10c32fa3 | 293 | // write the new config |
IanBenzMaxim | 74:23be10c32fa3 | 294 | return writeConfig(newConfig, true); |
IanBenzMaxim | 21:00c94aeb533e | 295 | } |
IanBenzMaxim | 21:00c94aeb533e | 296 | |
IanBenzMaxim | 75:8b627804927c | 297 | OneWireMaster::CmdResult DS2465::OWTriplet(SearchDirection & searchDirection, uint8_t & sbr, uint8_t & tsb) |
IanBenzMaxim | 21:00c94aeb533e | 298 | { |
IanBenzMaxim | 74:23be10c32fa3 | 299 | // 1-Wire Triplet (Case B) |
IanBenzMaxim | 74:23be10c32fa3 | 300 | // S AD,0 [A] 1WT [A] SS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 301 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 302 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 303 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 304 | // SS indicates byte containing search direction bit value in msbit |
IanBenzMaxim | 74:23be10c32fa3 | 305 | |
IanBenzMaxim | 74:23be10c32fa3 | 306 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 75:8b627804927c | 307 | uint8_t command[2] = { CMD_1WT, (uint8_t)((searchDirection == WriteOne) ? 0x80 : 0x00) }; |
IanBenzMaxim | 74:23be10c32fa3 | 308 | result = writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 32:bce180b544ed | 309 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 32:bce180b544ed | 310 | { |
IanBenzMaxim | 74:23be10c32fa3 | 311 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 312 | result = pollBusy(&status); |
IanBenzMaxim | 74:23be10c32fa3 | 313 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 314 | { |
IanBenzMaxim | 74:23be10c32fa3 | 315 | // check bit results in status byte |
IanBenzMaxim | 74:23be10c32fa3 | 316 | sbr = ((status & STATUS_SBR) == STATUS_SBR); |
IanBenzMaxim | 74:23be10c32fa3 | 317 | tsb = ((status & STATUS_TSB) == STATUS_TSB); |
IanBenzMaxim | 75:8b627804927c | 318 | searchDirection = ((status & STATUS_DIR) == STATUS_DIR) ? WriteOne : WriteZero; |
IanBenzMaxim | 74:23be10c32fa3 | 319 | } |
IanBenzMaxim | 32:bce180b544ed | 320 | } |
IanBenzMaxim | 74:23be10c32fa3 | 321 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 322 | } |
IanBenzMaxim | 21:00c94aeb533e | 323 | |
IanBenzMaxim | 75:8b627804927c | 324 | OneWireMaster::CmdResult DS2465::OWReadBlock(uint8_t *recvBuf, uint8_t recvLen) |
IanBenzMaxim | 21:00c94aeb533e | 325 | { |
IanBenzMaxim | 74:23be10c32fa3 | 326 | // 1-Wire Receive Block (Case A) |
IanBenzMaxim | 74:23be10c32fa3 | 327 | // S AD,0 [A] ADDR_CMD_REG [A] 1WRF [A] PR [A] P |
IanBenzMaxim | 74:23be10c32fa3 | 328 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 329 | // PR indicates byte containing parameter |
IanBenzMaxim | 74:23be10c32fa3 | 330 | |
IanBenzMaxim | 74:23be10c32fa3 | 331 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 75:8b627804927c | 332 | uint8_t command[2] = { CMD_1WRF, recvLen }; |
IanBenzMaxim | 21:00c94aeb533e | 333 | |
IanBenzMaxim | 74:23be10c32fa3 | 334 | result = writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 335 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 336 | { |
IanBenzMaxim | 74:23be10c32fa3 | 337 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 338 | } |
IanBenzMaxim | 74:23be10c32fa3 | 339 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 340 | { |
IanBenzMaxim | 75:8b627804927c | 341 | result = readMemory(ADDR_SPAD, recvBuf, recvLen, false); |
IanBenzMaxim | 74:23be10c32fa3 | 342 | } |
IanBenzMaxim | 21:00c94aeb533e | 343 | |
IanBenzMaxim | 74:23be10c32fa3 | 344 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 345 | } |
IanBenzMaxim | 21:00c94aeb533e | 346 | |
IanBenzMaxim | 75:8b627804927c | 347 | OneWireMaster::CmdResult DS2465::OWWriteBlock(const uint8_t *sendBuf, uint8_t sendLen) |
IanBenzMaxim | 21:00c94aeb533e | 348 | { |
IanBenzMaxim | 75:8b627804927c | 349 | return OWWriteBlock(false, sendBuf, sendLen); |
IanBenzMaxim | 21:00c94aeb533e | 350 | } |
IanBenzMaxim | 21:00c94aeb533e | 351 | |
IanBenzMaxim | 47:307dc45952db | 352 | OneWireMaster::CmdResult DS2465::OWWriteBlockMac() |
IanBenzMaxim | 47:307dc45952db | 353 | { |
IanBenzMaxim | 74:23be10c32fa3 | 354 | return OWWriteBlock(true, NULL, 0); |
IanBenzMaxim | 47:307dc45952db | 355 | } |
IanBenzMaxim | 47:307dc45952db | 356 | |
IanBenzMaxim | 73:2cecc1372acc | 357 | OneWireMaster::CmdResult DS2465::OWWriteBlock(bool tx_mac, const uint8_t *tran_buf, uint8_t tran_len) |
IanBenzMaxim | 21:00c94aeb533e | 358 | { |
IanBenzMaxim | 74:23be10c32fa3 | 359 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 360 | uint8_t command[2] = { CMD_1WTB, (uint8_t)(tx_mac ? 0xFF : tran_len) }; |
IanBenzMaxim | 21:00c94aeb533e | 361 | |
IanBenzMaxim | 74:23be10c32fa3 | 362 | if (!tx_mac) |
IanBenzMaxim | 74:23be10c32fa3 | 363 | { |
IanBenzMaxim | 74:23be10c32fa3 | 364 | // prefill scratchpad with required data |
IanBenzMaxim | 74:23be10c32fa3 | 365 | result = writeMemory(ADDR_SPAD, tran_buf, tran_len); |
IanBenzMaxim | 74:23be10c32fa3 | 366 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 367 | { |
IanBenzMaxim | 74:23be10c32fa3 | 368 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 369 | } |
IanBenzMaxim | 74:23be10c32fa3 | 370 | } |
IanBenzMaxim | 21:00c94aeb533e | 371 | |
IanBenzMaxim | 74:23be10c32fa3 | 372 | // 1-Wire Transmit Block (Case A) |
IanBenzMaxim | 74:23be10c32fa3 | 373 | // S AD,0 [A] ADDR_CMD_REG [A] 1WTB [A] PR [A] P |
IanBenzMaxim | 74:23be10c32fa3 | 374 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 375 | // PR indicates byte containing parameter |
IanBenzMaxim | 74:23be10c32fa3 | 376 | |
IanBenzMaxim | 74:23be10c32fa3 | 377 | result = writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 378 | |
IanBenzMaxim | 74:23be10c32fa3 | 379 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 380 | { |
IanBenzMaxim | 74:23be10c32fa3 | 381 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 382 | } |
IanBenzMaxim | 74:23be10c32fa3 | 383 | |
IanBenzMaxim | 74:23be10c32fa3 | 384 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 385 | } |
IanBenzMaxim | 21:00c94aeb533e | 386 | |
IanBenzMaxim | 75:8b627804927c | 387 | OneWireMaster::CmdResult DS2465::OWReadByteSetLevel(uint8_t & recvByte, OWLevel afterLevel) |
IanBenzMaxim | 21:00c94aeb533e | 388 | { |
IanBenzMaxim | 74:23be10c32fa3 | 389 | // 1-Wire Read Bytes (Case C) |
IanBenzMaxim | 74:23be10c32fa3 | 390 | // S AD,0 [A] ADDR_CMD_REG [A] 1WRB [A] Sr AD,1 [A] [Status] A [Status] A |
IanBenzMaxim | 74:23be10c32fa3 | 391 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 392 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 393 | // Sr AD,0 [A] SRP [A] E1 [A] Sr AD,1 [A] DD A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 394 | // |
IanBenzMaxim | 74:23be10c32fa3 | 395 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 396 | // DD data read |
IanBenzMaxim | 74:23be10c32fa3 | 397 | |
IanBenzMaxim | 74:23be10c32fa3 | 398 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 399 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 400 | |
IanBenzMaxim | 75:8b627804927c | 401 | result = configureLevel(afterLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 402 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 403 | { |
IanBenzMaxim | 74:23be10c32fa3 | 404 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 405 | } |
IanBenzMaxim | 74:23be10c32fa3 | 406 | |
IanBenzMaxim | 74:23be10c32fa3 | 407 | buf = CMD_1WRB; |
IanBenzMaxim | 74:23be10c32fa3 | 408 | result = writeMemory(ADDR_CMD_REG, &buf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 409 | |
IanBenzMaxim | 74:23be10c32fa3 | 410 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 411 | { |
IanBenzMaxim | 74:23be10c32fa3 | 412 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 413 | } |
IanBenzMaxim | 74:23be10c32fa3 | 414 | |
IanBenzMaxim | 74:23be10c32fa3 | 415 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 416 | { |
IanBenzMaxim | 74:23be10c32fa3 | 417 | result = readMemory(ADDR_DATA_REG, &buf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 418 | } |
IanBenzMaxim | 74:23be10c32fa3 | 419 | |
IanBenzMaxim | 74:23be10c32fa3 | 420 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 421 | { |
IanBenzMaxim | 75:8b627804927c | 422 | recvByte = buf; |
IanBenzMaxim | 74:23be10c32fa3 | 423 | } |
IanBenzMaxim | 74:23be10c32fa3 | 424 | |
IanBenzMaxim | 26:a361e3f42ba5 | 425 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 426 | } |
IanBenzMaxim | 21:00c94aeb533e | 427 | |
IanBenzMaxim | 75:8b627804927c | 428 | OneWireMaster::CmdResult DS2465::OWWriteByteSetLevel(uint8_t sendByte, OWLevel afterLevel) |
IanBenzMaxim | 74:23be10c32fa3 | 429 | { |
IanBenzMaxim | 74:23be10c32fa3 | 430 | // 1-Wire Write Byte (Case B) |
IanBenzMaxim | 74:23be10c32fa3 | 431 | // S AD,0 [A] ADDR_CMD_REG [A] 1WWB [A] DD [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 432 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 433 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 434 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 435 | // DD data to write |
IanBenzMaxim | 74:23be10c32fa3 | 436 | |
IanBenzMaxim | 74:23be10c32fa3 | 437 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 438 | |
IanBenzMaxim | 75:8b627804927c | 439 | result = configureLevel(afterLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 440 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 441 | { |
IanBenzMaxim | 74:23be10c32fa3 | 442 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 443 | } |
IanBenzMaxim | 74:23be10c32fa3 | 444 | |
IanBenzMaxim | 75:8b627804927c | 445 | uint8_t command[2] = { CMD_1WWB, sendByte }; |
IanBenzMaxim | 74:23be10c32fa3 | 446 | |
IanBenzMaxim | 74:23be10c32fa3 | 447 | result = writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 448 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 449 | { |
IanBenzMaxim | 74:23be10c32fa3 | 450 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 451 | } |
IanBenzMaxim | 74:23be10c32fa3 | 452 | |
IanBenzMaxim | 26:a361e3f42ba5 | 453 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 454 | } |
IanBenzMaxim | 21:00c94aeb533e | 455 | |
IanBenzMaxim | 75:8b627804927c | 456 | OneWireMaster::CmdResult DS2465::OWTouchBitSetLevel(uint8_t & sendRecvBit, OWLevel afterLevel) |
IanBenzMaxim | 21:00c94aeb533e | 457 | { |
IanBenzMaxim | 74:23be10c32fa3 | 458 | // 1-Wire bit (Case B) |
IanBenzMaxim | 74:23be10c32fa3 | 459 | // S AD,0 [A] ADDR_CMD_REG [A] 1WSB [A] BB [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 460 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 461 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 462 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 463 | // BB indicates byte containing bit value in msbit |
IanBenzMaxim | 74:23be10c32fa3 | 464 | |
IanBenzMaxim | 74:23be10c32fa3 | 465 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 466 | |
IanBenzMaxim | 75:8b627804927c | 467 | result = configureLevel(afterLevel); |
IanBenzMaxim | 74:23be10c32fa3 | 468 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 469 | { |
IanBenzMaxim | 74:23be10c32fa3 | 470 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 471 | } |
IanBenzMaxim | 21:00c94aeb533e | 472 | |
IanBenzMaxim | 75:8b627804927c | 473 | uint8_t command[2] = { CMD_1WSB, (uint8_t)(sendRecvBit ? 0x80 : 0x00) }; |
IanBenzMaxim | 74:23be10c32fa3 | 474 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 475 | |
IanBenzMaxim | 74:23be10c32fa3 | 476 | result = writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 477 | |
IanBenzMaxim | 74:23be10c32fa3 | 478 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 479 | { |
IanBenzMaxim | 74:23be10c32fa3 | 480 | result = pollBusy(&status); |
IanBenzMaxim | 74:23be10c32fa3 | 481 | } |
IanBenzMaxim | 74:23be10c32fa3 | 482 | |
IanBenzMaxim | 74:23be10c32fa3 | 483 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 484 | { |
IanBenzMaxim | 75:8b627804927c | 485 | sendRecvBit = (status & STATUS_SBR); |
IanBenzMaxim | 74:23be10c32fa3 | 486 | } |
IanBenzMaxim | 74:23be10c32fa3 | 487 | |
IanBenzMaxim | 26:a361e3f42ba5 | 488 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 489 | } |
IanBenzMaxim | 21:00c94aeb533e | 490 | |
IanBenzMaxim | 73:2cecc1372acc | 491 | OneWireMaster::CmdResult DS2465::cWriteMemory(uint8_t addr, const uint8_t * buf, size_t bufLen) const |
IanBenzMaxim | 21:00c94aeb533e | 492 | { |
IanBenzMaxim | 74:23be10c32fa3 | 493 | int i; |
IanBenzMaxim | 21:00c94aeb533e | 494 | |
IanBenzMaxim | 74:23be10c32fa3 | 495 | // Write SRAM (Case A) |
IanBenzMaxim | 74:23be10c32fa3 | 496 | // S AD,0 [A] VSA [A] DD [A] P |
IanBenzMaxim | 74:23be10c32fa3 | 497 | // \-----/ |
IanBenzMaxim | 74:23be10c32fa3 | 498 | // Repeat for each data byte |
IanBenzMaxim | 74:23be10c32fa3 | 499 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 500 | // VSA valid SRAM memory address |
IanBenzMaxim | 74:23be10c32fa3 | 501 | // DD memory data to write |
IanBenzMaxim | 74:23be10c32fa3 | 502 | |
IanBenzMaxim | 74:23be10c32fa3 | 503 | m_I2C_interface.start(); |
IanBenzMaxim | 74:23be10c32fa3 | 504 | if (m_I2C_interface.write((m_I2C_address | I2C_WRITE)) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 505 | { |
IanBenzMaxim | 21:00c94aeb533e | 506 | m_I2C_interface.stop(); |
IanBenzMaxim | 21:00c94aeb533e | 507 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 508 | } |
IanBenzMaxim | 74:23be10c32fa3 | 509 | if (m_I2C_interface.write(addr) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 510 | { |
IanBenzMaxim | 74:23be10c32fa3 | 511 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 512 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 513 | } |
IanBenzMaxim | 74:23be10c32fa3 | 514 | // loop to write each byte |
IanBenzMaxim | 74:23be10c32fa3 | 515 | for (i = 0; i < bufLen; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 516 | { |
IanBenzMaxim | 74:23be10c32fa3 | 517 | if (m_I2C_interface.write(buf[i]) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 518 | { |
IanBenzMaxim | 74:23be10c32fa3 | 519 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 520 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 521 | } |
IanBenzMaxim | 74:23be10c32fa3 | 522 | } |
IanBenzMaxim | 74:23be10c32fa3 | 523 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 524 | |
IanBenzMaxim | 74:23be10c32fa3 | 525 | return OneWireMaster::Success; |
IanBenzMaxim | 21:00c94aeb533e | 526 | } |
IanBenzMaxim | 21:00c94aeb533e | 527 | |
IanBenzMaxim | 73:2cecc1372acc | 528 | OneWireMaster::CmdResult DS2465::readMemory(uint8_t addr, uint8_t * buf, size_t bufLen, bool skipSetPointer) const |
IanBenzMaxim | 21:00c94aeb533e | 529 | { |
IanBenzMaxim | 74:23be10c32fa3 | 530 | int i; |
IanBenzMaxim | 74:23be10c32fa3 | 531 | |
IanBenzMaxim | 74:23be10c32fa3 | 532 | // Read (Case A) |
IanBenzMaxim | 74:23be10c32fa3 | 533 | // S AD,0 [A] MA [A] Sr AD,1 [A] [DD] A [DD] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 534 | // \-----/ |
IanBenzMaxim | 74:23be10c32fa3 | 535 | // Repeat for each data byte, NAK last byte |
IanBenzMaxim | 74:23be10c32fa3 | 536 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 537 | // MA memory address |
IanBenzMaxim | 74:23be10c32fa3 | 538 | // DD memory data read |
IanBenzMaxim | 21:00c94aeb533e | 539 | |
IanBenzMaxim | 74:23be10c32fa3 | 540 | m_I2C_interface.start(); |
IanBenzMaxim | 74:23be10c32fa3 | 541 | if (!skipSetPointer) |
IanBenzMaxim | 74:23be10c32fa3 | 542 | { |
IanBenzMaxim | 74:23be10c32fa3 | 543 | if (m_I2C_interface.write((m_I2C_address | I2C_WRITE)) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 544 | { |
IanBenzMaxim | 74:23be10c32fa3 | 545 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 546 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 547 | } |
IanBenzMaxim | 74:23be10c32fa3 | 548 | if (m_I2C_interface.write(addr) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 549 | { |
IanBenzMaxim | 74:23be10c32fa3 | 550 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 551 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 552 | } |
IanBenzMaxim | 74:23be10c32fa3 | 553 | m_I2C_interface.start(); |
IanBenzMaxim | 74:23be10c32fa3 | 554 | } |
IanBenzMaxim | 21:00c94aeb533e | 555 | |
IanBenzMaxim | 74:23be10c32fa3 | 556 | if (m_I2C_interface.write((m_I2C_address | I2C_READ)) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 557 | { |
IanBenzMaxim | 47:307dc45952db | 558 | m_I2C_interface.stop(); |
IanBenzMaxim | 47:307dc45952db | 559 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 560 | } |
IanBenzMaxim | 74:23be10c32fa3 | 561 | // loop to read each byte, NAK last byte |
IanBenzMaxim | 74:23be10c32fa3 | 562 | for (i = 0; i < bufLen; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 563 | { |
IanBenzMaxim | 74:23be10c32fa3 | 564 | buf[i] = m_I2C_interface.read((i == (bufLen - 1)) ? mbed::I2C::NoACK : mbed::I2C::ACK); |
IanBenzMaxim | 74:23be10c32fa3 | 565 | } |
IanBenzMaxim | 74:23be10c32fa3 | 566 | m_I2C_interface.stop(); |
IanBenzMaxim | 21:00c94aeb533e | 567 | |
IanBenzMaxim | 74:23be10c32fa3 | 568 | return OneWireMaster::Success; |
IanBenzMaxim | 21:00c94aeb533e | 569 | } |
IanBenzMaxim | 21:00c94aeb533e | 570 | |
IanBenzMaxim | 34:11fffbe98ef9 | 571 | OneWireMaster::CmdResult DS2465::writeConfig(const Config & config, bool verify) |
IanBenzMaxim | 21:00c94aeb533e | 572 | { |
IanBenzMaxim | 74:23be10c32fa3 | 573 | uint8_t configBuf; |
IanBenzMaxim | 74:23be10c32fa3 | 574 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 575 | |
IanBenzMaxim | 74:23be10c32fa3 | 576 | configBuf = config.writeByte(); |
IanBenzMaxim | 74:23be10c32fa3 | 577 | result = writeMemory(ADDR_WCFG_REG, &configBuf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 578 | if (verify) |
IanBenzMaxim | 74:23be10c32fa3 | 579 | { |
IanBenzMaxim | 74:23be10c32fa3 | 580 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 581 | { |
IanBenzMaxim | 74:23be10c32fa3 | 582 | result = readMemory(ADDR_WCFG_REG, &configBuf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 583 | } |
IanBenzMaxim | 74:23be10c32fa3 | 584 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 585 | { |
IanBenzMaxim | 74:23be10c32fa3 | 586 | if (configBuf != config.readByte()) |
IanBenzMaxim | 74:23be10c32fa3 | 587 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 588 | } |
IanBenzMaxim | 74:23be10c32fa3 | 589 | } |
IanBenzMaxim | 74:23be10c32fa3 | 590 | |
IanBenzMaxim | 35:5d23395628f6 | 591 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 35:5d23395628f6 | 592 | { |
IanBenzMaxim | 74:23be10c32fa3 | 593 | m_curConfig = config; |
IanBenzMaxim | 35:5d23395628f6 | 594 | } |
IanBenzMaxim | 35:5d23395628f6 | 595 | |
IanBenzMaxim | 74:23be10c32fa3 | 596 | return result; |
IanBenzMaxim | 24:8942d8478d68 | 597 | } |
IanBenzMaxim | 24:8942d8478d68 | 598 | |
IanBenzMaxim | 73:2cecc1372acc | 599 | OneWireMaster::CmdResult DS2465::pollBusy(uint8_t * pStatus) |
IanBenzMaxim | 24:8942d8478d68 | 600 | { |
IanBenzMaxim | 74:23be10c32fa3 | 601 | const unsigned int pollLimit = 200; |
IanBenzMaxim | 74:23be10c32fa3 | 602 | |
IanBenzMaxim | 74:23be10c32fa3 | 603 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 604 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 605 | unsigned int pollCount = 0; |
IanBenzMaxim | 47:307dc45952db | 606 | |
IanBenzMaxim | 74:23be10c32fa3 | 607 | do |
IanBenzMaxim | 74:23be10c32fa3 | 608 | { |
IanBenzMaxim | 74:23be10c32fa3 | 609 | result = readMemory(ADDR_STATUS_REG, &status, 1, true); |
IanBenzMaxim | 74:23be10c32fa3 | 610 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 611 | { |
IanBenzMaxim | 74:23be10c32fa3 | 612 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 613 | } |
IanBenzMaxim | 74:23be10c32fa3 | 614 | if (pStatus != NULL) |
IanBenzMaxim | 74:23be10c32fa3 | 615 | { |
IanBenzMaxim | 74:23be10c32fa3 | 616 | *pStatus = status; |
IanBenzMaxim | 74:23be10c32fa3 | 617 | } |
IanBenzMaxim | 74:23be10c32fa3 | 618 | if (pollCount++ >= pollLimit) |
IanBenzMaxim | 74:23be10c32fa3 | 619 | { |
IanBenzMaxim | 74:23be10c32fa3 | 620 | return OneWireMaster::TimeoutError; |
IanBenzMaxim | 74:23be10c32fa3 | 621 | } |
IanBenzMaxim | 74:23be10c32fa3 | 622 | } while (status & STATUS_1WB); |
IanBenzMaxim | 24:8942d8478d68 | 623 | |
IanBenzMaxim | 74:23be10c32fa3 | 624 | return OneWireMaster::Success; |
IanBenzMaxim | 21:00c94aeb533e | 625 | } |
IanBenzMaxim | 21:00c94aeb533e | 626 | |
IanBenzMaxim | 75:8b627804927c | 627 | OneWireMaster::CmdResult DS2465::OWReset() |
IanBenzMaxim | 74:23be10c32fa3 | 628 | { |
IanBenzMaxim | 74:23be10c32fa3 | 629 | // 1-Wire reset (Case B) |
IanBenzMaxim | 74:23be10c32fa3 | 630 | // S AD,0 [A] ADDR_CMD_REG [A] 1WRS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 631 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 632 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 633 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 634 | |
IanBenzMaxim | 74:23be10c32fa3 | 635 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 636 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 637 | |
IanBenzMaxim | 74:23be10c32fa3 | 638 | buf = CMD_1WRS; |
IanBenzMaxim | 74:23be10c32fa3 | 639 | result = writeMemory(ADDR_CMD_REG, &buf, 1); |
IanBenzMaxim | 21:00c94aeb533e | 640 | |
IanBenzMaxim | 74:23be10c32fa3 | 641 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 642 | { |
IanBenzMaxim | 74:23be10c32fa3 | 643 | result = pollBusy(&buf); |
IanBenzMaxim | 74:23be10c32fa3 | 644 | } |
IanBenzMaxim | 21:00c94aeb533e | 645 | |
IanBenzMaxim | 74:23be10c32fa3 | 646 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 647 | { |
IanBenzMaxim | 74:23be10c32fa3 | 648 | // check for presence detect |
IanBenzMaxim | 74:23be10c32fa3 | 649 | if ((buf & STATUS_PPD) != STATUS_PPD) |
IanBenzMaxim | 74:23be10c32fa3 | 650 | { |
IanBenzMaxim | 74:23be10c32fa3 | 651 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 652 | } |
IanBenzMaxim | 74:23be10c32fa3 | 653 | } |
IanBenzMaxim | 74:23be10c32fa3 | 654 | |
IanBenzMaxim | 74:23be10c32fa3 | 655 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 656 | } |
IanBenzMaxim | 21:00c94aeb533e | 657 | |
IanBenzMaxim | 75:8b627804927c | 658 | OneWireMaster::CmdResult DS2465::reset() |
IanBenzMaxim | 74:23be10c32fa3 | 659 | { |
IanBenzMaxim | 74:23be10c32fa3 | 660 | // Device Reset |
IanBenzMaxim | 74:23be10c32fa3 | 661 | // S AD,0 [A] ADDR_CMD_REG [A] 1WMR [A] Sr AD,1 [A] [SS] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 662 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 663 | // SS status byte to read to verify state |
IanBenzMaxim | 74:23be10c32fa3 | 664 | |
IanBenzMaxim | 74:23be10c32fa3 | 665 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 666 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 667 | |
IanBenzMaxim | 74:23be10c32fa3 | 668 | buf = CMD_1WMR; |
IanBenzMaxim | 74:23be10c32fa3 | 669 | result = writeMemory(ADDR_CMD_REG, &buf, 1); |
IanBenzMaxim | 24:8942d8478d68 | 670 | |
IanBenzMaxim | 74:23be10c32fa3 | 671 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 672 | { |
IanBenzMaxim | 74:23be10c32fa3 | 673 | result = readMemory(ADDR_STATUS_REG, &buf, 1, true); |
IanBenzMaxim | 74:23be10c32fa3 | 674 | } |
IanBenzMaxim | 21:00c94aeb533e | 675 | |
IanBenzMaxim | 74:23be10c32fa3 | 676 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 677 | { |
IanBenzMaxim | 74:23be10c32fa3 | 678 | if ((buf & 0xF7) != 0x10) |
IanBenzMaxim | 74:23be10c32fa3 | 679 | { |
IanBenzMaxim | 74:23be10c32fa3 | 680 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 681 | } |
IanBenzMaxim | 74:23be10c32fa3 | 682 | } |
IanBenzMaxim | 74:23be10c32fa3 | 683 | |
IanBenzMaxim | 74:23be10c32fa3 | 684 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 685 | { |
IanBenzMaxim | 74:23be10c32fa3 | 686 | OWReset(); // do a command to get 1-Wire master reset out of holding state |
IanBenzMaxim | 74:23be10c32fa3 | 687 | } |
IanBenzMaxim | 74:23be10c32fa3 | 688 | |
IanBenzMaxim | 74:23be10c32fa3 | 689 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 690 | } |