Mike Fruge / OneWire

Implementation of 1-Wire with added Alarm Search Functionality

Dependents:   Max32630_One_Wire_Interface

OneWire_Bridge/DS28E17/ds28e17.cpp@27:d5aaefa252f1, 2016-03-25 (annotated)

Committer:
IanBenzMaxim
Date:
Fri Mar 25 11:11:59 2016 -0500
Revision:
27:d5aaefa252f1
Parent:
23:e8e403d61359 
Do not reconfigure DS2465 if requested speed or level is already set. Use forward declarations to speed up compilation.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
j3 4:ca27db159b10 1 /******************************************************************//**
j3 4:ca27db159b10 2 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
j3 4:ca27db159b10 3 *
j3 4:ca27db159b10 4 * Permission is hereby granted, free of charge, to any person obtaining a
j3 4:ca27db159b10 5 * copy of this software and associated documentation files (the "Software"),
j3 4:ca27db159b10 6 * to deal in the Software without restriction, including without limitation
j3 4:ca27db159b10 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
j3 4:ca27db159b10 8 * and/or sell copies of the Software, and to permit persons to whom the
j3 4:ca27db159b10 9 * Software is furnished to do so, subject to the following conditions:
j3 4:ca27db159b10 10 *
j3 4:ca27db159b10 11 * The above copyright notice and this permission notice shall be included
j3 4:ca27db159b10 12 * in all copies or substantial portions of the Software.
j3 4:ca27db159b10 13 *
j3 4:ca27db159b10 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
j3 4:ca27db159b10 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
j3 4:ca27db159b10 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
j3 4:ca27db159b10 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
j3 4:ca27db159b10 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
j3 4:ca27db159b10 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
j3 4:ca27db159b10 20 * OTHER DEALINGS IN THE SOFTWARE.
j3 4:ca27db159b10 21 *
j3 4:ca27db159b10 22 * Except as contained in this notice, the name of Maxim Integrated
j3 4:ca27db159b10 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
j3 4:ca27db159b10 24 * Products, Inc. Branding Policy.
j3 4:ca27db159b10 25 *
j3 4:ca27db159b10 26 * The mere transfer of this software does not imply any licenses
j3 4:ca27db159b10 27 * of trade secrets, proprietary technology, copyrights, patents,
j3 4:ca27db159b10 28 * trademarks, maskwork rights, or any other form of intellectual
j3 4:ca27db159b10 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
j3 4:ca27db159b10 30 * ownership rights.
j3 4:ca27db159b10 31 **********************************************************************/
j3 4:ca27db159b10 32
j3 4:ca27db159b10 33
IanBenzMaxim 27:d5aaefa252f1 34 #include "ds28e17.h"
j3 4:ca27db159b10 35
j3 7:78a8857b3810 36 const uint16_t Ds28e17::_oddparity[] = { 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0 };
j3 4:ca27db159b10 37
j3 4:ca27db159b10 38
j3 4:ca27db159b10 39 //*********************************************************************
j3 22:686273e55cdc 40 Ds28e17::Ds28e17(OneWireMaster &owm)
j3 17:b646b1e3970b 41 :_owm(owm)
j3 4:ca27db159b10 42 {
j3 7:78a8857b3810 43
j3 4:ca27db159b10 44 }
j3 4:ca27db159b10 45
j3 4:ca27db159b10 46
j3 4:ca27db159b10 47 //*********************************************************************
j3 17:b646b1e3970b 48 void Ds28e17::set_rom_id(const RomId &romId)
j3 17:b646b1e3970b 49 {
j3 17:b646b1e3970b 50 _romId = romId;
j3 17:b646b1e3970b 51 }
j3 17:b646b1e3970b 52
j3 17:b646b1e3970b 53
j3 17:b646b1e3970b 54 //*********************************************************************
j3 17:b646b1e3970b 55 RomId Ds28e17::get_rom_id(void)
j3 17:b646b1e3970b 56 {
j3 17:b646b1e3970b 57 return _romId;
j3 17:b646b1e3970b 58 }
j3 17:b646b1e3970b 59
j3 17:b646b1e3970b 60
j3 17:b646b1e3970b 61 //*********************************************************************
j3 17:b646b1e3970b 62 Ds28e17::CmdResult Ds28e17::I2C_WriteDataWithStop(uint8_t I2C_addr, uint8_t length,
j3 7:78a8857b3810 63 uint8_t *data, uint8_t &status,
j3 7:78a8857b3810 64 uint8_t &wr_status)
j3 4:ca27db159b10 65 {
j3 17:b646b1e3970b 66 Ds28e17::CmdResult bridge_result = Ds28e17::OperationFailure;
j3 4:ca27db159b10 67
j3 7:78a8857b3810 68 size_t send_cnt = 0;
j3 7:78a8857b3810 69 uint8_t send_block[0xff];
j3 7:78a8857b3810 70
j3 23:e8e403d61359 71 OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(_romId);
j3 17:b646b1e3970b 72
j3 23:e8e403d61359 73 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 74 {
j3 7:78a8857b3810 75 //seed the crc
j3 7:78a8857b3810 76 _crc16 = 0;
j3 7:78a8857b3810 77
j3 7:78a8857b3810 78 // Form the 1-Wire Packet
j3 7:78a8857b3810 79
j3 7:78a8857b3810 80 // I2C Write Data with Stop command
j3 7:78a8857b3810 81 send_block[send_cnt] = CMD_I2C_WRITE_W_STOP;
j3 7:78a8857b3810 82 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 83
j3 7:78a8857b3810 84 // I2C Address
j3 7:78a8857b3810 85 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 86 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 87
j3 7:78a8857b3810 88 // Length field
j3 7:78a8857b3810 89 send_block[send_cnt] = length;
j3 7:78a8857b3810 90 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 91
j3 7:78a8857b3810 92 // Form the write data
j3 17:b646b1e3970b 93 for (size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 94 {
j3 7:78a8857b3810 95 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 96 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 97 }
j3 7:78a8857b3810 98
j3 7:78a8857b3810 99 // Form the CRC16
j3 7:78a8857b3810 100 _crc16 = _crc16^0xFFFF;
j3 7:78a8857b3810 101 send_block[send_cnt++] = ((uint8_t)(_crc16 & 0xFF));
j3 7:78a8857b3810 102 send_block[send_cnt++] = ((uint8_t)((_crc16 >> 8) & 0xFF));
j3 7:78a8857b3810 103
j3 7:78a8857b3810 104 // Send Packet
j3 17:b646b1e3970b 105 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
j3 7:78a8857b3810 106 }
j3 4:ca27db159b10 107
j3 17:b646b1e3970b 108 return bridge_result;
j3 4:ca27db159b10 109 }
j3 4:ca27db159b10 110
j3 4:ca27db159b10 111
j3 4:ca27db159b10 112 //*********************************************************************
j3 17:b646b1e3970b 113 Ds28e17::CmdResult Ds28e17::I2C_WriteDataNoStop(uint8_t I2C_addr, uint8_t length,
j3 7:78a8857b3810 114 uint8_t *data, uint8_t &status,
j3 7:78a8857b3810 115 uint8_t &wr_status)
j3 4:ca27db159b10 116 {
j3 17:b646b1e3970b 117 Ds28e17::CmdResult bridge_result = Ds28e17::OperationFailure;
j3 4:ca27db159b10 118
j3 7:78a8857b3810 119 size_t send_cnt = 0;
j3 7:78a8857b3810 120 uint8_t send_block[0xff];
j3 7:78a8857b3810 121
j3 23:e8e403d61359 122 OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(_romId);
j3 17:b646b1e3970b 123
j3 23:e8e403d61359 124 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 125 {
j3 7:78a8857b3810 126 // seed the crc
j3 7:78a8857b3810 127 _crc16 = 0;
j3 7:78a8857b3810 128
j3 7:78a8857b3810 129 // I2C Write Data with Stop command
j3 7:78a8857b3810 130 send_block[send_cnt] = CMD_I2C_WRITE_NO_STOP;
j3 7:78a8857b3810 131 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 132
j3 7:78a8857b3810 133 // I2C Address
j3 7:78a8857b3810 134 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 135 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 136
j3 7:78a8857b3810 137 // Length field
j3 7:78a8857b3810 138 send_block[send_cnt] = length;
j3 7:78a8857b3810 139 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 140
j3 7:78a8857b3810 141 // Form the write data
j3 17:b646b1e3970b 142 for(size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 143 {
j3 7:78a8857b3810 144 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 145 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 146 }
j3 7:78a8857b3810 147
j3 7:78a8857b3810 148 // Form the CRC16
j3 7:78a8857b3810 149 _crc16 = _crc16^0xFFFF;
j3 7:78a8857b3810 150 send_block[send_cnt++] = ((uint8_t)(_crc16 & 0xFF));
j3 7:78a8857b3810 151 send_block[send_cnt++] = ((uint8_t)((_crc16 >> 8) & 0xFF));
j3 7:78a8857b3810 152
j3 7:78a8857b3810 153 // Send Packet
j3 17:b646b1e3970b 154 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
j3 7:78a8857b3810 155 }
j3 7:78a8857b3810 156
j3 17:b646b1e3970b 157 return bridge_result;
j3 4:ca27db159b10 158 }
j3 4:ca27db159b10 159
j3 4:ca27db159b10 160
j3 4:ca27db159b10 161 //*********************************************************************
j3 17:b646b1e3970b 162 Ds28e17::CmdResult Ds28e17::I2C_WriteDataOnly(uint8_t length, uint8_t *data,
j3 7:78a8857b3810 163 uint8_t &status, uint8_t &wr_status)
j3 4:ca27db159b10 164 {
j3 17:b646b1e3970b 165 Ds28e17::CmdResult bridge_result = Ds28e17::OperationFailure;
j3 4:ca27db159b10 166
j3 7:78a8857b3810 167 size_t send_cnt = 0;
j3 7:78a8857b3810 168 uint8_t send_block[0xff];
j3 7:78a8857b3810 169
j3 23:e8e403d61359 170 OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(_romId);
j3 17:b646b1e3970b 171
j3 23:e8e403d61359 172 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 173 {
j3 7:78a8857b3810 174 // seed the crc
j3 7:78a8857b3810 175 _crc16 = 0;
j3 7:78a8857b3810 176
j3 7:78a8857b3810 177 // Form the 1-Wire Packet
j3 7:78a8857b3810 178
j3 7:78a8857b3810 179 // I2C Write Data with Stop command
j3 7:78a8857b3810 180 send_block[send_cnt] = CMD_I2C_WRITE_ONLY;
j3 7:78a8857b3810 181 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 182
j3 7:78a8857b3810 183 // Length field
j3 7:78a8857b3810 184 send_block[send_cnt] = length;
j3 7:78a8857b3810 185 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 186
j3 7:78a8857b3810 187 // Form the write data
j3 17:b646b1e3970b 188 for (size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 189 {
j3 7:78a8857b3810 190 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 191 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 192 }
j3 7:78a8857b3810 193
j3 7:78a8857b3810 194 // Form the CRC16\
j3 7:78a8857b3810 195 _crc16 = _crc16^0xFFFF;
j3 7:78a8857b3810 196 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 197 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
j3 7:78a8857b3810 198
j3 7:78a8857b3810 199 // Send Packet
j3 17:b646b1e3970b 200 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
j3 7:78a8857b3810 201 }
j3 7:78a8857b3810 202
j3 17:b646b1e3970b 203 return bridge_result;
j3 4:ca27db159b10 204 }
j3 4:ca27db159b10 205
j3 4:ca27db159b10 206
j3 4:ca27db159b10 207 //*********************************************************************
j3 17:b646b1e3970b 208 Ds28e17::CmdResult Ds28e17::I2C_WriteDataOnlyWithStop(uint8_t length, uint8_t *data,
j3 7:78a8857b3810 209 uint8_t &status, uint8_t &wr_status)
j3 4:ca27db159b10 210 {
j3 17:b646b1e3970b 211 Ds28e17::CmdResult bridge_result = Ds28e17::OperationFailure;
j3 4:ca27db159b10 212
j3 7:78a8857b3810 213 size_t send_cnt = 0;
j3 7:78a8857b3810 214 uint8_t send_block[0xff];
j3 7:78a8857b3810 215
j3 23:e8e403d61359 216 OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(_romId);
j3 17:b646b1e3970b 217
j3 23:e8e403d61359 218 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 219 {
j3 7:78a8857b3810 220 //seed the crc
j3 7:78a8857b3810 221 _crc16 = 0;
j3 7:78a8857b3810 222
j3 7:78a8857b3810 223 // Form the 1-Wire Packet
j3 7:78a8857b3810 224
j3 7:78a8857b3810 225 // I2C Write Data with Stop command
j3 7:78a8857b3810 226 send_block[send_cnt] = CMD_I2C_WRITE_ONLY_W_STOP;
j3 7:78a8857b3810 227 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 228
j3 7:78a8857b3810 229 // Length field
j3 7:78a8857b3810 230 send_block[send_cnt] = length;
j3 7:78a8857b3810 231 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 232
j3 7:78a8857b3810 233 // Form the write data
j3 17:b646b1e3970b 234 for (size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 235 {
j3 7:78a8857b3810 236 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 237 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 238 }
j3 7:78a8857b3810 239
j3 7:78a8857b3810 240 // Form the CRC16
j3 7:78a8857b3810 241 _crc16 = _crc16^0xFFFF;
j3 7:78a8857b3810 242 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 243 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
j3 7:78a8857b3810 244
j3 7:78a8857b3810 245 // Send Packet
j3 17:b646b1e3970b 246 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
j3 17:b646b1e3970b 247 }
j3 7:78a8857b3810 248
j3 17:b646b1e3970b 249 return bridge_result;
j3 4:ca27db159b10 250 }
j3 4:ca27db159b10 251
j3 4:ca27db159b10 252
j3 4:ca27db159b10 253 //*********************************************************************
j3 17:b646b1e3970b 254 Ds28e17::CmdResult Ds28e17::I2C_WriteReadDataWithStop(uint8_t I2C_addr, uint8_t length,
j3 4:ca27db159b10 255 uint8_t *data, uint8_t nu_bytes_read,
j3 7:78a8857b3810 256 uint8_t &status, uint8_t &wr_status,
j3 4:ca27db159b10 257 uint8_t *read_data)
j3 4:ca27db159b10 258 {
j3 17:b646b1e3970b 259 Ds28e17::CmdResult bridge_result = Ds28e17::OperationFailure;
j3 4:ca27db159b10 260
j3 7:78a8857b3810 261 size_t send_cnt = 0;
j3 7:78a8857b3810 262 size_t idx = 0;
j3 7:78a8857b3810 263 uint8_t send_block[0xff];
j3 7:78a8857b3810 264
j3 23:e8e403d61359 265 OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(_romId);
j3 17:b646b1e3970b 266
j3 23:e8e403d61359 267 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 268 {
j3 7:78a8857b3810 269 //seed the crc
j3 7:78a8857b3810 270 _crc16 = 0;
j3 7:78a8857b3810 271
j3 7:78a8857b3810 272 // Form the 1-Wire Packet
j3 7:78a8857b3810 273
j3 7:78a8857b3810 274 // I2C Write Data with Stop command
j3 7:78a8857b3810 275 send_block[send_cnt] = CMD_I2C_WRITE_READ_W_STOP;
j3 7:78a8857b3810 276 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 277
j3 7:78a8857b3810 278 // I2C Address
j3 7:78a8857b3810 279 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 280 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 281
j3 7:78a8857b3810 282 // Length field
j3 7:78a8857b3810 283 send_block[send_cnt] = length;
j3 7:78a8857b3810 284 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 285
j3 7:78a8857b3810 286 // Form the write data
j3 7:78a8857b3810 287 for (idx = 0; idx < length; idx++)
j3 7:78a8857b3810 288 {
j3 7:78a8857b3810 289 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 290 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 291 }
j3 7:78a8857b3810 292
j3 7:78a8857b3810 293 // # of bytes to Read field
j3 7:78a8857b3810 294 send_block[send_cnt] = nu_bytes_read;
j3 7:78a8857b3810 295 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 296
j3 7:78a8857b3810 297 // Form the CRC16
j3 7:78a8857b3810 298 _crc16 = _crc16^0xFFFF;
j3 7:78a8857b3810 299 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 300 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
j3 7:78a8857b3810 301
j3 7:78a8857b3810 302 // Send Packet
j3 17:b646b1e3970b 303 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
j3 17:b646b1e3970b 304 if(bridge_result == Ds28e17::Success)
j3 7:78a8857b3810 305 {
j3 17:b646b1e3970b 306 ow_result = _owm.OWReadBlock(read_data, nu_bytes_read);
j3 23:e8e403d61359 307 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 308 {
j3 17:b646b1e3970b 309 bridge_result = Ds28e17::Success;
j3 7:78a8857b3810 310 }
j3 17:b646b1e3970b 311 else
j3 17:b646b1e3970b 312 {
j3 17:b646b1e3970b 313 bridge_result = Ds28e17::CommsReadBlockError;
j3 17:b646b1e3970b 314 }
j3 7:78a8857b3810 315 }
j3 7:78a8857b3810 316 }
j3 7:78a8857b3810 317
j3 17:b646b1e3970b 318 return bridge_result;
j3 4:ca27db159b10 319 }
j3 4:ca27db159b10 320
j3 4:ca27db159b10 321
j3 4:ca27db159b10 322 //*********************************************************************
j3 17:b646b1e3970b 323 Ds28e17::CmdResult Ds28e17::I2C_ReadDataWithStop(uint8_t I2C_addr, uint8_t nu_bytes_read,
j3 7:78a8857b3810 324 uint8_t &status, uint8_t *read_data)
j3 4:ca27db159b10 325 {
j3 17:b646b1e3970b 326 Ds28e17::CmdResult bridge_result = Ds28e17::OperationFailure;
j3 4:ca27db159b10 327
j3 7:78a8857b3810 328 size_t send_cnt = 0;
j3 7:78a8857b3810 329 uint8_t send_block[0xff];
j3 7:78a8857b3810 330
j3 23:e8e403d61359 331 OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(_romId);
j3 17:b646b1e3970b 332
j3 23:e8e403d61359 333 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 334 {
j3 7:78a8857b3810 335 //seed the crc for transmit bytes
j3 7:78a8857b3810 336 _crc16 = 0;
j3 7:78a8857b3810 337
j3 7:78a8857b3810 338 // Form the 1-Wire Packet to send
j3 7:78a8857b3810 339
j3 7:78a8857b3810 340 // I2C Write Data with Stop command
j3 7:78a8857b3810 341 send_block[send_cnt] = CMD_I2C_READ_W_STOP;
j3 7:78a8857b3810 342 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 343
j3 7:78a8857b3810 344 // I2C Address
j3 7:78a8857b3810 345 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 346 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 347
j3 7:78a8857b3810 348 // # of bytes to Read field
j3 7:78a8857b3810 349 send_block[send_cnt] = nu_bytes_read;
j3 7:78a8857b3810 350 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 351
j3 7:78a8857b3810 352 // Form the CRC16
j3 7:78a8857b3810 353 _crc16 = _crc16^0xFFFF;
j3 7:78a8857b3810 354 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 355 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
j3 7:78a8857b3810 356
j3 7:78a8857b3810 357 // Send Packet
j3 17:b646b1e3970b 358 bridge_result = send_packet(send_block, send_cnt, status);
j3 17:b646b1e3970b 359 if(bridge_result == Ds28e17::Success)
j3 7:78a8857b3810 360 {
j3 17:b646b1e3970b 361 ow_result = _owm.OWReadBlock(read_data, nu_bytes_read);
j3 23:e8e403d61359 362 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 363 {
j3 17:b646b1e3970b 364 bridge_result = Ds28e17::Success;
j3 7:78a8857b3810 365 }
j3 17:b646b1e3970b 366 else
j3 17:b646b1e3970b 367 {
j3 17:b646b1e3970b 368 bridge_result = Ds28e17::CommsReadBlockError;
j3 17:b646b1e3970b 369 }
j3 7:78a8857b3810 370 }
j3 7:78a8857b3810 371 }
j3 7:78a8857b3810 372
j3 17:b646b1e3970b 373 return bridge_result;
j3 4:ca27db159b10 374 }
j3 4:ca27db159b10 375
j3 4:ca27db159b10 376
j3 4:ca27db159b10 377 //*********************************************************************
j3 17:b646b1e3970b 378 Ds28e17::CmdResult Ds28e17::WriteConfigReg(uint8_t data)
j3 7:78a8857b3810 379 {
j3 17:b646b1e3970b 380 Ds28e17::CmdResult bridge_result = Ds28e17::OperationFailure;
j3 7:78a8857b3810 381
j3 23:e8e403d61359 382 OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(_romId);
j3 17:b646b1e3970b 383
j3 23:e8e403d61359 384 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 385 {
j3 7:78a8857b3810 386 // Send CMD and Data
j3 17:b646b1e3970b 387 uint8_t send_block[] = {CMD_WRITE_CONFIG_REG, data};
j3 17:b646b1e3970b 388
j3 17:b646b1e3970b 389 ow_result = _owm.OWWriteBlock(send_block, 2);
j3 23:e8e403d61359 390 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 391 {
j3 17:b646b1e3970b 392 _i2c_speed = data & 0x03; // Save off _i2c_speed setting to be used by other functions
j3 17:b646b1e3970b 393 bridge_result = Ds28e17::Success;
j3 17:b646b1e3970b 394 }
j3 17:b646b1e3970b 395 else
j3 17:b646b1e3970b 396 {
j3 17:b646b1e3970b 397 bridge_result = Ds28e17::CommsWriteBlockError;
j3 17:b646b1e3970b 398 }
j3 7:78a8857b3810 399 }
j3 7:78a8857b3810 400
j3 17:b646b1e3970b 401 return bridge_result;
j3 7:78a8857b3810 402 }
j3 7:78a8857b3810 403
j3 7:78a8857b3810 404
j3 7:78a8857b3810 405 //*********************************************************************
j3 17:b646b1e3970b 406 Ds28e17::CmdResult Ds28e17::ReadConfigReg(uint8_t & config)
j3 7:78a8857b3810 407 {
j3 17:b646b1e3970b 408 Ds28e17::CmdResult bridge_result = Ds28e17::OperationFailure;
j3 7:78a8857b3810 409
j3 23:e8e403d61359 410 OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(_romId);
j3 17:b646b1e3970b 411
j3 23:e8e403d61359 412 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 413 {
j3 7:78a8857b3810 414 // Send CMD and receive Data
j3 17:b646b1e3970b 415 ow_result = _owm.OWWriteByte(CMD_READ_CONFIG_REG);
j3 23:e8e403d61359 416 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 417 {
j3 17:b646b1e3970b 418 ow_result = _owm.OWReadByte(config);
j3 23:e8e403d61359 419 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 420 {
j3 17:b646b1e3970b 421 bridge_result = Ds28e17::Success;
j3 17:b646b1e3970b 422 }
j3 17:b646b1e3970b 423 else
j3 17:b646b1e3970b 424 {
j3 17:b646b1e3970b 425 bridge_result = Ds28e17::CommsReadByteError;
j3 17:b646b1e3970b 426 }
j3 17:b646b1e3970b 427 }
j3 17:b646b1e3970b 428 else
j3 17:b646b1e3970b 429 {
j3 17:b646b1e3970b 430 bridge_result = Ds28e17::CommsWriteByteError;
j3 17:b646b1e3970b 431 }
j3 7:78a8857b3810 432 }
j3 7:78a8857b3810 433
j3 17:b646b1e3970b 434 return bridge_result;
j3 7:78a8857b3810 435 }
j3 7:78a8857b3810 436
j3 7:78a8857b3810 437
j3 7:78a8857b3810 438 //*********************************************************************
j3 17:b646b1e3970b 439 Ds28e17::CmdResult Ds28e17::DisableOWMode()
j3 7:78a8857b3810 440 {
j3 17:b646b1e3970b 441 Ds28e17::CmdResult bridge_result = Ds28e17::OperationFailure;
j3 7:78a8857b3810 442
j3 23:e8e403d61359 443 OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(_romId);
j3 17:b646b1e3970b 444
j3 23:e8e403d61359 445 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 446 {
j3 7:78a8857b3810 447 // Send CMD
j3 17:b646b1e3970b 448 ow_result = _owm.OWWriteByte(CMD_DISABLE_OW_MODE);
j3 23:e8e403d61359 449 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 450 {
j3 17:b646b1e3970b 451 bridge_result = Ds28e17::Success;
j3 17:b646b1e3970b 452 }
j3 17:b646b1e3970b 453 else
j3 17:b646b1e3970b 454 {
j3 17:b646b1e3970b 455 bridge_result = Ds28e17::CommsWriteByteError;
j3 17:b646b1e3970b 456 }
j3 7:78a8857b3810 457 }
j3 7:78a8857b3810 458
j3 17:b646b1e3970b 459 return bridge_result;
j3 7:78a8857b3810 460 }
j3 7:78a8857b3810 461
j3 7:78a8857b3810 462
j3 7:78a8857b3810 463 //*********************************************************************
j3 17:b646b1e3970b 464 Ds28e17::CmdResult Ds28e17::EnableSleepMode()
j3 7:78a8857b3810 465 {
j3 17:b646b1e3970b 466 Ds28e17::CmdResult bridge_result = Ds28e17::OperationFailure;
j3 7:78a8857b3810 467
j3 23:e8e403d61359 468 OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(_romId);
j3 17:b646b1e3970b 469
j3 23:e8e403d61359 470 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 471 {
j3 7:78a8857b3810 472 // Send CMD
j3 17:b646b1e3970b 473 ow_result = _owm.OWWriteByte(CMD_ENABLE_SLEEP_MODE);
j3 23:e8e403d61359 474 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 475 {
j3 17:b646b1e3970b 476 bridge_result = Ds28e17::Success;
j3 17:b646b1e3970b 477 }
j3 17:b646b1e3970b 478 else
j3 17:b646b1e3970b 479 {
j3 17:b646b1e3970b 480 bridge_result = Ds28e17::CommsWriteByteError;
j3 17:b646b1e3970b 481 }
j3 7:78a8857b3810 482 }
j3 7:78a8857b3810 483
j3 17:b646b1e3970b 484 return bridge_result;
j3 7:78a8857b3810 485 }
j3 7:78a8857b3810 486
j3 7:78a8857b3810 487
j3 7:78a8857b3810 488 //*********************************************************************
j3 17:b646b1e3970b 489 Ds28e17::CmdResult Ds28e17::ReadDeviceRevision(uint8_t & rev)
j3 7:78a8857b3810 490 {
j3 17:b646b1e3970b 491 Ds28e17::CmdResult bridge_result = Ds28e17::OperationFailure;
j3 7:78a8857b3810 492
j3 23:e8e403d61359 493 OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(_romId);
j3 17:b646b1e3970b 494
j3 23:e8e403d61359 495 if(ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 496 {
j3 7:78a8857b3810 497 // Send CMD and receive Data
j3 17:b646b1e3970b 498 ow_result = _owm.OWWriteByte(CMD_READ_DEVICE_REV);
j3 23:e8e403d61359 499 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 500 {
j3 17:b646b1e3970b 501 ow_result = _owm.OWReadByte(rev);
j3 23:e8e403d61359 502 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 503 {
j3 17:b646b1e3970b 504 bridge_result = Ds28e17::Success;
j3 17:b646b1e3970b 505 }
j3 17:b646b1e3970b 506 else
j3 17:b646b1e3970b 507 {
j3 17:b646b1e3970b 508 bridge_result = Ds28e17::CommsReadByteError;
j3 17:b646b1e3970b 509 }
j3 17:b646b1e3970b 510 }
j3 17:b646b1e3970b 511 else
j3 17:b646b1e3970b 512 {
j3 17:b646b1e3970b 513 bridge_result = Ds28e17::CommsWriteByteError;
j3 17:b646b1e3970b 514 }
j3 7:78a8857b3810 515 }
j3 7:78a8857b3810 516
j3 17:b646b1e3970b 517 return bridge_result;
j3 7:78a8857b3810 518 }
j3 7:78a8857b3810 519
j3 7:78a8857b3810 520
j3 7:78a8857b3810 521 //*********************************************************************
j3 7:78a8857b3810 522 uint16_t Ds28e17::docrc16(uint16_t data)
j3 7:78a8857b3810 523 {
j3 7:78a8857b3810 524 data = ((data ^ (_crc16 & 0xff)) & 0xff);
j3 7:78a8857b3810 525 _crc16 >>= 8;
j3 7:78a8857b3810 526
j3 7:78a8857b3810 527 if (Ds28e17::_oddparity[data & 0xf] ^ Ds28e17::_oddparity[data >> 4])
j3 7:78a8857b3810 528 {
j3 7:78a8857b3810 529 _crc16 ^= 0xc001;
j3 7:78a8857b3810 530 }
j3 7:78a8857b3810 531
j3 7:78a8857b3810 532 data <<= 6;
j3 7:78a8857b3810 533 _crc16 ^= data;
j3 7:78a8857b3810 534 data <<= 1;
j3 7:78a8857b3810 535 _crc16 ^= data;
j3 7:78a8857b3810 536
j3 7:78a8857b3810 537 return _crc16;
j3 7:78a8857b3810 538 }
j3 7:78a8857b3810 539
j3 7:78a8857b3810 540
j3 17:b646b1e3970b 541 //*********************************************************************
j3 17:b646b1e3970b 542 Ds28e17::CmdResult Ds28e17::send_packet(const uint8_t * data, uint8_t data_length,
j3 17:b646b1e3970b 543 uint8_t & status, uint8_t & wr_status)
j3 17:b646b1e3970b 544 {
j3 17:b646b1e3970b 545 Ds28e17::CmdResult bridge_result = Ds28e17::CommsWriteBlockError;
j3 17:b646b1e3970b 546 uint32_t poll_count = 0;
j3 17:b646b1e3970b 547
j3 23:e8e403d61359 548 OneWireMaster::CmdResult ow_result = _owm.OWWriteBlock(data, data_length);
j3 17:b646b1e3970b 549
j3 23:e8e403d61359 550 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 551 {
j3 17:b646b1e3970b 552 // Poll for Zero 1-Wire bit and return if an error occurs
j3 17:b646b1e3970b 553 uint8_t recvbit = 0x01;
j3 17:b646b1e3970b 554 do
j3 17:b646b1e3970b 555 {
j3 17:b646b1e3970b 556 ow_result = _owm.OWReadBit(recvbit);
j3 17:b646b1e3970b 557 }
j3 23:e8e403d61359 558 while(recvbit && (poll_count++ < POLL_LIMIT) && (ow_result == OneWireMaster::Success));
j3 17:b646b1e3970b 559
j3 23:e8e403d61359 560 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 561 {
j3 17:b646b1e3970b 562 if(poll_count < POLL_LIMIT)
j3 17:b646b1e3970b 563 {
j3 17:b646b1e3970b 564 //Read Status and write status
j3 17:b646b1e3970b 565 uint8_t read_block[2];
j3 17:b646b1e3970b 566
j3 17:b646b1e3970b 567 ow_result = _owm.OWReadBlock(read_block, 2);
j3 17:b646b1e3970b 568
j3 23:e8e403d61359 569 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 570 {
j3 17:b646b1e3970b 571 status = read_block[0];
j3 17:b646b1e3970b 572 wr_status = read_block[1];
j3 17:b646b1e3970b 573 bridge_result = Ds28e17::Success;
j3 17:b646b1e3970b 574 }
j3 17:b646b1e3970b 575 else
j3 17:b646b1e3970b 576 {
j3 17:b646b1e3970b 577 bridge_result = Ds28e17::CommsReadBlockError;
j3 17:b646b1e3970b 578 }
j3 17:b646b1e3970b 579 }
j3 17:b646b1e3970b 580 else
j3 17:b646b1e3970b 581 {
j3 17:b646b1e3970b 582 bridge_result = Ds28e17::TimeoutError;
j3 17:b646b1e3970b 583 }
j3 17:b646b1e3970b 584 }
j3 17:b646b1e3970b 585 else
j3 17:b646b1e3970b 586 {
j3 17:b646b1e3970b 587 bridge_result = Ds28e17::CommsReadBitError;
j3 17:b646b1e3970b 588 }
j3 17:b646b1e3970b 589 }
j3 17:b646b1e3970b 590
j3 17:b646b1e3970b 591 return bridge_result;
j3 17:b646b1e3970b 592 }
j3 17:b646b1e3970b 593
j3 17:b646b1e3970b 594
j3 17:b646b1e3970b 595 //*********************************************************************
j3 17:b646b1e3970b 596 Ds28e17::CmdResult Ds28e17::send_packet(const uint8_t * data, uint8_t data_length,
j3 17:b646b1e3970b 597 uint8_t & status)
j3 17:b646b1e3970b 598 {
j3 17:b646b1e3970b 599 Ds28e17::CmdResult bridge_result = Ds28e17::CommsWriteBlockError;
j3 17:b646b1e3970b 600 uint32_t poll_count = 0;
j3 17:b646b1e3970b 601
j3 23:e8e403d61359 602 OneWireMaster::CmdResult ow_result = _owm.OWWriteBlock(data, data_length);
j3 17:b646b1e3970b 603
j3 23:e8e403d61359 604 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 605 {
j3 17:b646b1e3970b 606 // Poll for Zero 1-Wire bit and return if an error occurs
j3 17:b646b1e3970b 607 uint8_t recvbit = 0x01;
j3 17:b646b1e3970b 608 do
j3 17:b646b1e3970b 609 {
j3 17:b646b1e3970b 610 ow_result = _owm.OWReadBit(recvbit);
j3 17:b646b1e3970b 611 }
j3 23:e8e403d61359 612 while(recvbit && (poll_count++ < POLL_LIMIT) && (ow_result == OneWireMaster::Success));
j3 17:b646b1e3970b 613
j3 23:e8e403d61359 614 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 615 {
j3 17:b646b1e3970b 616 if(poll_count < POLL_LIMIT)
j3 17:b646b1e3970b 617 {
j3 17:b646b1e3970b 618 //Read Status
j3 17:b646b1e3970b 619 ow_result = _owm.OWReadByte(status);
j3 23:e8e403d61359 620 if(ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 621 {
j3 17:b646b1e3970b 622 bridge_result = Ds28e17::Success;
j3 17:b646b1e3970b 623 }
j3 17:b646b1e3970b 624 else
j3 17:b646b1e3970b 625 {
j3 17:b646b1e3970b 626 bridge_result = Ds28e17::CommsReadByteError;
j3 17:b646b1e3970b 627 }
j3 17:b646b1e3970b 628 }
j3 17:b646b1e3970b 629 else
j3 17:b646b1e3970b 630 {
j3 17:b646b1e3970b 631 bridge_result = Ds28e17::TimeoutError;
j3 17:b646b1e3970b 632 }
j3 17:b646b1e3970b 633 }
j3 17:b646b1e3970b 634 else
j3 17:b646b1e3970b 635 {
j3 17:b646b1e3970b 636 bridge_result = Ds28e17::CommsReadBitError;
j3 17:b646b1e3970b 637 }
j3 17:b646b1e3970b 638 }
j3 17:b646b1e3970b 639
j3 17:b646b1e3970b 640 return bridge_result;
j3 17:b646b1e3970b 641 }
j3 17:b646b1e3970b 642