Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
Slaves/Sensors/DS18B20/DS18B20.cpp@106:d121acb88a34, 2016-08-03 (annotated)
- Committer:
- j3
- Date:
- Wed Aug 03 22:12:13 2016 +0000
- Revision:
- 106:d121acb88a34
- Parent:
- 104:3f48daed532b
- Child:
- 121:4bee07064d0d
fixed references to DS18B20 resolution in DS18B20.cpp
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
j3 | 101:e7f76cb49584 | 1 | /******************************************************************//** |
j3 | 101:e7f76cb49584 | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
j3 | 101:e7f76cb49584 | 3 | * |
j3 | 101:e7f76cb49584 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
j3 | 101:e7f76cb49584 | 5 | * copy of this software and associated documentation files (the "Software"), |
j3 | 101:e7f76cb49584 | 6 | * to deal in the Software without restriction, including without limitation |
j3 | 101:e7f76cb49584 | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
j3 | 101:e7f76cb49584 | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
j3 | 101:e7f76cb49584 | 9 | * Software is furnished to do so, subject to the following conditions: |
j3 | 101:e7f76cb49584 | 10 | * |
j3 | 101:e7f76cb49584 | 11 | * The above copyright notice and this permission notice shall be included |
j3 | 101:e7f76cb49584 | 12 | * in all copies or substantial portions of the Software. |
j3 | 101:e7f76cb49584 | 13 | * |
j3 | 101:e7f76cb49584 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
j3 | 101:e7f76cb49584 | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
j3 | 101:e7f76cb49584 | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
j3 | 101:e7f76cb49584 | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
j3 | 101:e7f76cb49584 | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
j3 | 101:e7f76cb49584 | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
j3 | 101:e7f76cb49584 | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
j3 | 101:e7f76cb49584 | 21 | * |
j3 | 101:e7f76cb49584 | 22 | * Except as contained in this notice, the name of Maxim Integrated |
j3 | 101:e7f76cb49584 | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
j3 | 101:e7f76cb49584 | 24 | * Products, Inc. Branding Policy. |
j3 | 101:e7f76cb49584 | 25 | * |
j3 | 101:e7f76cb49584 | 26 | * The mere transfer of this software does not imply any licenses |
j3 | 101:e7f76cb49584 | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
j3 | 101:e7f76cb49584 | 28 | * trademarks, maskwork rights, or any other form of intellectual |
j3 | 101:e7f76cb49584 | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
j3 | 101:e7f76cb49584 | 30 | * ownership rights. |
j3 | 101:e7f76cb49584 | 31 | **********************************************************************/ |
j3 | 101:e7f76cb49584 | 32 | |
j3 | 101:e7f76cb49584 | 33 | |
j3 | 104:3f48daed532b | 34 | #include "Slaves/Sensors/DS18B20/DS18B20.h" |
j3 | 101:e7f76cb49584 | 35 | #include "wait_api.h" |
j3 | 101:e7f76cb49584 | 36 | |
j3 | 101:e7f76cb49584 | 37 | |
j3 | 101:e7f76cb49584 | 38 | using namespace OneWire; |
j3 | 101:e7f76cb49584 | 39 | using namespace OneWire::crc; |
j3 | 101:e7f76cb49584 | 40 | |
j3 | 101:e7f76cb49584 | 41 | |
j3 | 101:e7f76cb49584 | 42 | enum DS18B20_CMDS |
j3 | 101:e7f76cb49584 | 43 | { |
j3 | 101:e7f76cb49584 | 44 | WRITE_SCRATCHPAD = 0x4E, |
j3 | 101:e7f76cb49584 | 45 | READ_SCRATCHPAD = 0xBE, |
j3 | 101:e7f76cb49584 | 46 | COPY_SCRATCHPAD = 0x48, |
j3 | 101:e7f76cb49584 | 47 | CONV_TEMPERATURE = 0x44, |
j3 | 101:e7f76cb49584 | 48 | READ_POWER_SUPPY = 0xB4, |
j3 | 101:e7f76cb49584 | 49 | RECALL = 0xB8 |
j3 | 101:e7f76cb49584 | 50 | }; |
j3 | 101:e7f76cb49584 | 51 | |
j3 | 101:e7f76cb49584 | 52 | |
j3 | 101:e7f76cb49584 | 53 | /**********************************************************************/ |
j3 | 101:e7f76cb49584 | 54 | DS18B20::DS18B20(RandomAccessRomIterator &selector):OneWireSlave(selector) |
j3 | 101:e7f76cb49584 | 55 | { |
j3 | 101:e7f76cb49584 | 56 | } |
j3 | 101:e7f76cb49584 | 57 | |
j3 | 101:e7f76cb49584 | 58 | |
j3 | 101:e7f76cb49584 | 59 | /**********************************************************************/ |
j3 | 101:e7f76cb49584 | 60 | OneWireSlave::CmdResult DS18B20::writeScratchPad(uint8_t th, uint8_t tl, Resolution res) |
j3 | 101:e7f76cb49584 | 61 | { |
j3 | 101:e7f76cb49584 | 62 | OneWireSlave::CmdResult deviceResult = OneWireSlave::OperationFailure; |
j3 | 101:e7f76cb49584 | 63 | |
j3 | 101:e7f76cb49584 | 64 | OneWireMaster::CmdResult owmResult = selectDevice(); |
j3 | 101:e7f76cb49584 | 65 | |
j3 | 101:e7f76cb49584 | 66 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 67 | { |
j3 | 101:e7f76cb49584 | 68 | uint8_t sendBlock[] = {WRITE_SCRATCHPAD, th, tl, res}; |
j3 | 101:e7f76cb49584 | 69 | |
j3 | 101:e7f76cb49584 | 70 | owmResult = master().OWWriteBlock(sendBlock, 4); |
j3 | 101:e7f76cb49584 | 71 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 72 | { |
j3 | 101:e7f76cb49584 | 73 | deviceResult = OneWireSlave::Success; |
j3 | 101:e7f76cb49584 | 74 | } |
j3 | 101:e7f76cb49584 | 75 | else |
j3 | 101:e7f76cb49584 | 76 | { |
j3 | 101:e7f76cb49584 | 77 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 78 | } |
j3 | 101:e7f76cb49584 | 79 | } |
j3 | 101:e7f76cb49584 | 80 | |
j3 | 101:e7f76cb49584 | 81 | return deviceResult; |
j3 | 101:e7f76cb49584 | 82 | } |
j3 | 101:e7f76cb49584 | 83 | |
j3 | 101:e7f76cb49584 | 84 | |
j3 | 101:e7f76cb49584 | 85 | /**********************************************************************/ |
j3 | 101:e7f76cb49584 | 86 | OneWireSlave::CmdResult DS18B20::readScratchPad(uint8_t * scratchPadBuff) |
j3 | 101:e7f76cb49584 | 87 | { |
j3 | 101:e7f76cb49584 | 88 | OneWireSlave::CmdResult deviceResult = OneWireSlave::OperationFailure; |
j3 | 101:e7f76cb49584 | 89 | |
j3 | 101:e7f76cb49584 | 90 | OneWireMaster::CmdResult owmResult = selectDevice(); |
j3 | 101:e7f76cb49584 | 91 | |
j3 | 101:e7f76cb49584 | 92 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 93 | { |
j3 | 101:e7f76cb49584 | 94 | owmResult = master().OWWriteByteSetLevel(READ_SCRATCHPAD, OneWireMaster::NormalLevel); |
j3 | 101:e7f76cb49584 | 95 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 96 | { |
j3 | 101:e7f76cb49584 | 97 | uint8_t rxBlock[9]; |
j3 | 101:e7f76cb49584 | 98 | owmResult = master().OWReadBlock(rxBlock, 9); |
j3 | 101:e7f76cb49584 | 99 | |
j3 | 101:e7f76cb49584 | 100 | uint8_t crcCheck = calculateCrc8(rxBlock, 8); |
j3 | 101:e7f76cb49584 | 101 | if ((owmResult == OneWireMaster::Success) && (crcCheck == rxBlock[8])) |
j3 | 101:e7f76cb49584 | 102 | { |
j3 | 101:e7f76cb49584 | 103 | std::memcpy(scratchPadBuff, rxBlock, 8); |
j3 | 101:e7f76cb49584 | 104 | deviceResult = OneWireSlave::Success; |
j3 | 101:e7f76cb49584 | 105 | } |
j3 | 101:e7f76cb49584 | 106 | else |
j3 | 101:e7f76cb49584 | 107 | { |
j3 | 101:e7f76cb49584 | 108 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 109 | } |
j3 | 101:e7f76cb49584 | 110 | } |
j3 | 101:e7f76cb49584 | 111 | else |
j3 | 101:e7f76cb49584 | 112 | { |
j3 | 101:e7f76cb49584 | 113 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 114 | } |
j3 | 101:e7f76cb49584 | 115 | } |
j3 | 101:e7f76cb49584 | 116 | |
j3 | 101:e7f76cb49584 | 117 | return deviceResult; |
j3 | 101:e7f76cb49584 | 118 | } |
j3 | 101:e7f76cb49584 | 119 | |
j3 | 101:e7f76cb49584 | 120 | |
j3 | 101:e7f76cb49584 | 121 | /**********************************************************************/ |
j3 | 101:e7f76cb49584 | 122 | OneWireSlave::CmdResult DS18B20::readPowerSupply(bool & localPower) |
j3 | 101:e7f76cb49584 | 123 | { |
j3 | 101:e7f76cb49584 | 124 | OneWireSlave::CmdResult deviceResult = OneWireSlave::OperationFailure; |
j3 | 101:e7f76cb49584 | 125 | |
j3 | 101:e7f76cb49584 | 126 | OneWireMaster::CmdResult owmResult = selectDevice(); |
j3 | 101:e7f76cb49584 | 127 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 128 | { |
j3 | 101:e7f76cb49584 | 129 | owmResult = master().OWWriteByteSetLevel(READ_POWER_SUPPY, OneWireMaster::NormalLevel); |
j3 | 101:e7f76cb49584 | 130 | if(owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 131 | { |
j3 | 101:e7f76cb49584 | 132 | uint8_t rtnBit = 0; |
j3 | 101:e7f76cb49584 | 133 | |
j3 | 101:e7f76cb49584 | 134 | owmResult = master().OWTouchBitSetLevel(rtnBit, OneWireMaster::NormalLevel); |
j3 | 101:e7f76cb49584 | 135 | if(owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 136 | { |
j3 | 101:e7f76cb49584 | 137 | localPower = (rtnBit & 0x01); |
j3 | 101:e7f76cb49584 | 138 | deviceResult = OneWireSlave::Success; |
j3 | 101:e7f76cb49584 | 139 | } |
j3 | 101:e7f76cb49584 | 140 | else |
j3 | 101:e7f76cb49584 | 141 | { |
j3 | 101:e7f76cb49584 | 142 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 143 | } |
j3 | 101:e7f76cb49584 | 144 | } |
j3 | 101:e7f76cb49584 | 145 | else |
j3 | 101:e7f76cb49584 | 146 | { |
j3 | 101:e7f76cb49584 | 147 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 148 | } |
j3 | 101:e7f76cb49584 | 149 | } |
j3 | 101:e7f76cb49584 | 150 | |
j3 | 101:e7f76cb49584 | 151 | return deviceResult; |
j3 | 101:e7f76cb49584 | 152 | } |
j3 | 101:e7f76cb49584 | 153 | |
j3 | 101:e7f76cb49584 | 154 | /**********************************************************************/ |
j3 | 101:e7f76cb49584 | 155 | OneWireSlave::CmdResult DS18B20::copyScratchPad( void ) |
j3 | 101:e7f76cb49584 | 156 | { |
j3 | 101:e7f76cb49584 | 157 | OneWireSlave::CmdResult deviceResult = OneWireSlave::OperationFailure; |
j3 | 101:e7f76cb49584 | 158 | |
j3 | 101:e7f76cb49584 | 159 | bool hasLocalPower = false; |
j3 | 101:e7f76cb49584 | 160 | deviceResult = this->readPowerSupply(hasLocalPower); |
j3 | 101:e7f76cb49584 | 161 | |
j3 | 101:e7f76cb49584 | 162 | if(deviceResult == OneWireSlave::Success) |
j3 | 101:e7f76cb49584 | 163 | { |
j3 | 101:e7f76cb49584 | 164 | OneWireMaster::CmdResult owmResult = selectDevice(); |
j3 | 101:e7f76cb49584 | 165 | |
j3 | 101:e7f76cb49584 | 166 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 167 | { |
j3 | 101:e7f76cb49584 | 168 | if(hasLocalPower) |
j3 | 101:e7f76cb49584 | 169 | { |
j3 | 101:e7f76cb49584 | 170 | owmResult = master().OWWriteByteSetLevel(COPY_SCRATCHPAD, OneWireMaster::NormalLevel); |
j3 | 101:e7f76cb49584 | 171 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 172 | { |
j3 | 101:e7f76cb49584 | 173 | uint8_t recvbit = 0; |
j3 | 101:e7f76cb49584 | 174 | do |
j3 | 101:e7f76cb49584 | 175 | { |
j3 | 101:e7f76cb49584 | 176 | owmResult = master().OWTouchBitSetLevel(recvbit, OneWireMaster::NormalLevel); |
j3 | 101:e7f76cb49584 | 177 | } |
j3 | 101:e7f76cb49584 | 178 | while((!recvbit) && (owmResult == OneWireMaster::Success)); |
j3 | 101:e7f76cb49584 | 179 | |
j3 | 101:e7f76cb49584 | 180 | if ((owmResult == OneWireMaster::Success) && (recvbit & 1)) |
j3 | 101:e7f76cb49584 | 181 | { |
j3 | 101:e7f76cb49584 | 182 | deviceResult = OneWireSlave::Success; |
j3 | 101:e7f76cb49584 | 183 | } |
j3 | 101:e7f76cb49584 | 184 | else |
j3 | 101:e7f76cb49584 | 185 | { |
j3 | 101:e7f76cb49584 | 186 | deviceResult = OneWireSlave::TimeoutError; |
j3 | 101:e7f76cb49584 | 187 | } |
j3 | 101:e7f76cb49584 | 188 | } |
j3 | 101:e7f76cb49584 | 189 | else |
j3 | 101:e7f76cb49584 | 190 | { |
j3 | 101:e7f76cb49584 | 191 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 192 | } |
j3 | 101:e7f76cb49584 | 193 | } |
j3 | 101:e7f76cb49584 | 194 | else |
j3 | 101:e7f76cb49584 | 195 | { |
j3 | 101:e7f76cb49584 | 196 | owmResult = master().OWWriteByteSetLevel(COPY_SCRATCHPAD, OneWireMaster::StrongLevel); |
j3 | 101:e7f76cb49584 | 197 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 198 | { |
j3 | 101:e7f76cb49584 | 199 | wait_ms(10); |
j3 | 101:e7f76cb49584 | 200 | |
j3 | 101:e7f76cb49584 | 201 | owmResult = master().OWSetLevel(OneWireMaster::NormalLevel); |
j3 | 101:e7f76cb49584 | 202 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 203 | { |
j3 | 101:e7f76cb49584 | 204 | deviceResult = OneWireSlave::Success; |
j3 | 101:e7f76cb49584 | 205 | } |
j3 | 101:e7f76cb49584 | 206 | else |
j3 | 101:e7f76cb49584 | 207 | { |
j3 | 101:e7f76cb49584 | 208 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 209 | } |
j3 | 101:e7f76cb49584 | 210 | } |
j3 | 101:e7f76cb49584 | 211 | else |
j3 | 101:e7f76cb49584 | 212 | { |
j3 | 101:e7f76cb49584 | 213 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 214 | } |
j3 | 101:e7f76cb49584 | 215 | } |
j3 | 101:e7f76cb49584 | 216 | } |
j3 | 101:e7f76cb49584 | 217 | else |
j3 | 101:e7f76cb49584 | 218 | { |
j3 | 101:e7f76cb49584 | 219 | deviceResult = OneWireSlave::OperationFailure; |
j3 | 101:e7f76cb49584 | 220 | } |
j3 | 101:e7f76cb49584 | 221 | } |
j3 | 101:e7f76cb49584 | 222 | |
j3 | 101:e7f76cb49584 | 223 | return deviceResult; |
j3 | 101:e7f76cb49584 | 224 | } |
j3 | 101:e7f76cb49584 | 225 | |
j3 | 101:e7f76cb49584 | 226 | /**********************************************************************/ |
j3 | 101:e7f76cb49584 | 227 | OneWireSlave::CmdResult DS18B20::convertTemperature(float & temp) |
j3 | 101:e7f76cb49584 | 228 | { |
j3 | 101:e7f76cb49584 | 229 | OneWireSlave::CmdResult deviceResult = OneWireSlave::OperationFailure; |
j3 | 101:e7f76cb49584 | 230 | |
j3 | 101:e7f76cb49584 | 231 | bool hasLocalPower = false; |
j3 | 101:e7f76cb49584 | 232 | deviceResult = this->readPowerSupply(hasLocalPower); |
j3 | 101:e7f76cb49584 | 233 | |
j3 | 101:e7f76cb49584 | 234 | uint8_t scratchPadBuff[8]; |
j3 | 101:e7f76cb49584 | 235 | |
j3 | 101:e7f76cb49584 | 236 | if (deviceResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 237 | { |
j3 | 101:e7f76cb49584 | 238 | OneWireMaster::CmdResult owmResult = selectDevice(); |
j3 | 101:e7f76cb49584 | 239 | if(owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 240 | { |
j3 | 101:e7f76cb49584 | 241 | if(hasLocalPower) |
j3 | 101:e7f76cb49584 | 242 | { |
j3 | 101:e7f76cb49584 | 243 | owmResult = master().OWWriteByteSetLevel(CONV_TEMPERATURE, OneWireMaster::NormalLevel); |
j3 | 101:e7f76cb49584 | 244 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 245 | { |
j3 | 101:e7f76cb49584 | 246 | uint8_t recvbit = 0; |
j3 | 101:e7f76cb49584 | 247 | do |
j3 | 101:e7f76cb49584 | 248 | { |
j3 | 101:e7f76cb49584 | 249 | owmResult = master().OWTouchBitSetLevel(recvbit, OneWireMaster::NormalLevel); |
j3 | 101:e7f76cb49584 | 250 | } |
j3 | 101:e7f76cb49584 | 251 | while((owmResult == OneWireMaster::Success) && (!recvbit)); |
j3 | 101:e7f76cb49584 | 252 | |
j3 | 101:e7f76cb49584 | 253 | if((owmResult == OneWireMaster::Success) && (recvbit & 1)) |
j3 | 101:e7f76cb49584 | 254 | { |
j3 | 101:e7f76cb49584 | 255 | deviceResult = this->readScratchPad(scratchPadBuff); |
j3 | 101:e7f76cb49584 | 256 | } |
j3 | 101:e7f76cb49584 | 257 | else |
j3 | 101:e7f76cb49584 | 258 | { |
j3 | 101:e7f76cb49584 | 259 | deviceResult = OneWireSlave::TimeoutError; |
j3 | 101:e7f76cb49584 | 260 | } |
j3 | 101:e7f76cb49584 | 261 | } |
j3 | 101:e7f76cb49584 | 262 | else |
j3 | 101:e7f76cb49584 | 263 | { |
j3 | 101:e7f76cb49584 | 264 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 265 | } |
j3 | 101:e7f76cb49584 | 266 | } |
j3 | 101:e7f76cb49584 | 267 | else |
j3 | 101:e7f76cb49584 | 268 | { |
j3 | 101:e7f76cb49584 | 269 | owmResult = master().OWWriteByteSetLevel(CONV_TEMPERATURE, OneWireMaster::StrongLevel); |
j3 | 101:e7f76cb49584 | 270 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 271 | { |
j3 | 101:e7f76cb49584 | 272 | wait_ms(750); |
j3 | 101:e7f76cb49584 | 273 | |
j3 | 101:e7f76cb49584 | 274 | owmResult = master().OWSetLevel(OneWireMaster::NormalLevel); |
j3 | 101:e7f76cb49584 | 275 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 276 | { |
j3 | 101:e7f76cb49584 | 277 | deviceResult = this->readScratchPad(scratchPadBuff); |
j3 | 101:e7f76cb49584 | 278 | } |
j3 | 101:e7f76cb49584 | 279 | else |
j3 | 101:e7f76cb49584 | 280 | { |
j3 | 101:e7f76cb49584 | 281 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 282 | } |
j3 | 101:e7f76cb49584 | 283 | } |
j3 | 101:e7f76cb49584 | 284 | else |
j3 | 101:e7f76cb49584 | 285 | { |
j3 | 101:e7f76cb49584 | 286 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 287 | } |
j3 | 101:e7f76cb49584 | 288 | } |
j3 | 101:e7f76cb49584 | 289 | } |
j3 | 101:e7f76cb49584 | 290 | else |
j3 | 101:e7f76cb49584 | 291 | { |
j3 | 101:e7f76cb49584 | 292 | deviceResult = OneWireSlave::OperationFailure; |
j3 | 101:e7f76cb49584 | 293 | } |
j3 | 101:e7f76cb49584 | 294 | } |
j3 | 101:e7f76cb49584 | 295 | |
j3 | 101:e7f76cb49584 | 296 | if(deviceResult == OneWireSlave::Success) |
j3 | 101:e7f76cb49584 | 297 | { |
j3 | 101:e7f76cb49584 | 298 | int16_t intTemp = ((scratchPadBuff[1] << 8) | scratchPadBuff[0]); |
j3 | 101:e7f76cb49584 | 299 | |
j3 | 101:e7f76cb49584 | 300 | switch(scratchPadBuff[4]) |
j3 | 101:e7f76cb49584 | 301 | { |
j3 | 106:d121acb88a34 | 302 | case DS18B20::NineBit: |
j3 | 101:e7f76cb49584 | 303 | temp = (intTemp * 0.5F); |
j3 | 101:e7f76cb49584 | 304 | break; |
j3 | 101:e7f76cb49584 | 305 | |
j3 | 106:d121acb88a34 | 306 | case DS18B20::TenBit: |
j3 | 101:e7f76cb49584 | 307 | temp = (intTemp * 0.25F); |
j3 | 101:e7f76cb49584 | 308 | break; |
j3 | 101:e7f76cb49584 | 309 | |
j3 | 106:d121acb88a34 | 310 | case DS18B20::ElevenBit: |
j3 | 101:e7f76cb49584 | 311 | temp = (intTemp * 0.125F); |
j3 | 101:e7f76cb49584 | 312 | break; |
j3 | 101:e7f76cb49584 | 313 | |
j3 | 106:d121acb88a34 | 314 | case DS18B20::TwelveBit: |
j3 | 101:e7f76cb49584 | 315 | temp = (intTemp * 0.0625F); |
j3 | 101:e7f76cb49584 | 316 | break; |
j3 | 101:e7f76cb49584 | 317 | |
j3 | 101:e7f76cb49584 | 318 | default: |
j3 | 101:e7f76cb49584 | 319 | deviceResult = OneWireSlave::OperationFailure; |
j3 | 101:e7f76cb49584 | 320 | break; |
j3 | 101:e7f76cb49584 | 321 | } |
j3 | 101:e7f76cb49584 | 322 | } |
j3 | 101:e7f76cb49584 | 323 | |
j3 | 101:e7f76cb49584 | 324 | return deviceResult; |
j3 | 101:e7f76cb49584 | 325 | } |
j3 | 101:e7f76cb49584 | 326 | |
j3 | 101:e7f76cb49584 | 327 | |
j3 | 101:e7f76cb49584 | 328 | /**********************************************************************/ |
j3 | 101:e7f76cb49584 | 329 | OneWireSlave::CmdResult DS18B20::recallEEPROM( void ) |
j3 | 101:e7f76cb49584 | 330 | { |
j3 | 101:e7f76cb49584 | 331 | OneWireSlave::CmdResult deviceResult = OneWireSlave::OperationFailure; |
j3 | 101:e7f76cb49584 | 332 | |
j3 | 101:e7f76cb49584 | 333 | OneWireMaster::CmdResult owmResult = selectDevice(); |
j3 | 101:e7f76cb49584 | 334 | |
j3 | 101:e7f76cb49584 | 335 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 336 | { |
j3 | 101:e7f76cb49584 | 337 | uint8_t cmd = RECALL; |
j3 | 101:e7f76cb49584 | 338 | |
j3 | 101:e7f76cb49584 | 339 | owmResult = master().OWWriteBlock(&cmd, 1); |
j3 | 101:e7f76cb49584 | 340 | if (owmResult == OneWireMaster::Success) |
j3 | 101:e7f76cb49584 | 341 | { |
j3 | 101:e7f76cb49584 | 342 | deviceResult = OneWireSlave::Success; |
j3 | 101:e7f76cb49584 | 343 | } |
j3 | 101:e7f76cb49584 | 344 | else |
j3 | 101:e7f76cb49584 | 345 | { |
j3 | 101:e7f76cb49584 | 346 | deviceResult = OneWireSlave::CommunicationError; |
j3 | 101:e7f76cb49584 | 347 | } |
j3 | 101:e7f76cb49584 | 348 | } |
j3 | 101:e7f76cb49584 | 349 | |
j3 | 101:e7f76cb49584 | 350 | return deviceResult; |
j3 | 101:e7f76cb49584 | 351 | } |