Mike Fruge / OneWire

Implementation of 1-Wire with added Alarm Search Functionality

Dependents:   Max32630_One_Wire_Interface

Bridge/DS28E17/DS28E17.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:
77:529edb329ee0
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?

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
IanBenzMaxim 73:2cecc1372acc 33 #include "DS28E17.h"
IanBenzMaxim 73:2cecc1372acc 34 #include "Masters/OneWireMaster.h"
IanBenzMaxim 76:84e6c4994e29 35 #include "RomCommands.h"
j3 4:ca27db159b10 36
IanBenzMaxim 76:84e6c4994e29 37 using OneWire::DS28E17;
IanBenzMaxim 76:84e6c4994e29 38 using OneWire::OneWireMaster;
IanBenzMaxim 76:84e6c4994e29 39 using namespace OneWire::RomCommands;
j3 4:ca27db159b10 40
IanBenzMaxim 75:8b627804927c 41
IanBenzMaxim 75:8b627804927c 42 enum Command
IanBenzMaxim 75:8b627804927c 43 {
IanBenzMaxim 75:8b627804927c 44 WriteDataWithStopCmd = 0x4B,
IanBenzMaxim 75:8b627804927c 45 WriteDataNoStopCmd = 0x5A,
IanBenzMaxim 75:8b627804927c 46 WriteDataOnlyCmd = 0x69,
IanBenzMaxim 75:8b627804927c 47 WriteDataOnlyWithStopCmd = 0x78,
IanBenzMaxim 75:8b627804927c 48 ReadDataWithStopCmd = 0x87,
IanBenzMaxim 75:8b627804927c 49 WriteReadDataWithStopCmd = 0x2D,
IanBenzMaxim 75:8b627804927c 50 WriteConfigurationCmd = 0xD2,
IanBenzMaxim 75:8b627804927c 51 ReadConfigurationCmd = 0xE1,
IanBenzMaxim 75:8b627804927c 52 EnableSleepModeCmd = 0x1E,
IanBenzMaxim 75:8b627804927c 53 ReadDeviceRevisionCmd = 0xC3
IanBenzMaxim 75:8b627804927c 54 };
IanBenzMaxim 75:8b627804927c 55
IanBenzMaxim 75:8b627804927c 56
IanBenzMaxim 73:2cecc1372acc 57 const uint16_t DS28E17::_oddparity[] = { 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0 };
j3 4:ca27db159b10 58
j3 4:ca27db159b10 59
j3 4:ca27db159b10 60 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 61 DS28E17::DS28E17(OneWireMaster &owm)
IanBenzMaxim 76:84e6c4994e29 62 : OneWireSlave(&owm)
j3 4:ca27db159b10 63 {
IanBenzMaxim 74:23be10c32fa3 64
j3 4:ca27db159b10 65 }
j3 4:ca27db159b10 66
j3 4:ca27db159b10 67
j3 4:ca27db159b10 68 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 69 DS28E17::CmdResult DS28E17::I2C_WriteDataWithStop(uint8_t I2C_addr, uint8_t length,
IanBenzMaxim 74:23be10c32fa3 70 uint8_t *data, uint8_t &status,
IanBenzMaxim 74:23be10c32fa3 71 uint8_t &wr_status)
j3 4:ca27db159b10 72 {
IanBenzMaxim 73:2cecc1372acc 73 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 74
j3 7:78a8857b3810 75 size_t send_cnt = 0;
j3 7:78a8857b3810 76 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 77
IanBenzMaxim 76:84e6c4994e29 78 OneWireMaster::CmdResult ow_result = OWMatchRom(*p_owMaster, romId);
IanBenzMaxim 74:23be10c32fa3 79
IanBenzMaxim 74:23be10c32fa3 80 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 81 {
j3 7:78a8857b3810 82 //seed the crc
j3 7:78a8857b3810 83 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 84
j3 7:78a8857b3810 85 // Form the 1-Wire Packet
IanBenzMaxim 74:23be10c32fa3 86
j3 7:78a8857b3810 87 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 88 send_block[send_cnt] = WriteDataWithStopCmd;
j3 7:78a8857b3810 89 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 90
j3 7:78a8857b3810 91 // I2C Address
j3 7:78a8857b3810 92 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 93 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 94
j3 7:78a8857b3810 95 // Length field
j3 7:78a8857b3810 96 send_block[send_cnt] = length;
j3 7:78a8857b3810 97 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 98
j3 7:78a8857b3810 99 // Form the write data
IanBenzMaxim 74:23be10c32fa3 100 for (size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 101 {
j3 7:78a8857b3810 102 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 103 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 104 }
IanBenzMaxim 74:23be10c32fa3 105
j3 7:78a8857b3810 106 // Form the CRC16
IanBenzMaxim 74:23be10c32fa3 107 _crc16 = _crc16 ^ 0xFFFF;
j3 7:78a8857b3810 108 send_block[send_cnt++] = ((uint8_t)(_crc16 & 0xFF));
j3 7:78a8857b3810 109 send_block[send_cnt++] = ((uint8_t)((_crc16 >> 8) & 0xFF));
IanBenzMaxim 74:23be10c32fa3 110
j3 7:78a8857b3810 111 // Send Packet
j3 17:b646b1e3970b 112 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
j3 7:78a8857b3810 113 }
IanBenzMaxim 74:23be10c32fa3 114
j3 17:b646b1e3970b 115 return bridge_result;
j3 4:ca27db159b10 116 }
j3 4:ca27db159b10 117
j3 4:ca27db159b10 118
j3 4:ca27db159b10 119 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 120 DS28E17::CmdResult DS28E17::I2C_WriteDataNoStop(uint8_t I2C_addr, uint8_t length,
IanBenzMaxim 74:23be10c32fa3 121 uint8_t *data, uint8_t &status,
IanBenzMaxim 74:23be10c32fa3 122 uint8_t &wr_status)
j3 4:ca27db159b10 123 {
IanBenzMaxim 73:2cecc1372acc 124 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 125
j3 7:78a8857b3810 126 size_t send_cnt = 0;
j3 7:78a8857b3810 127 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 128
IanBenzMaxim 76:84e6c4994e29 129 OneWireMaster::CmdResult ow_result = OWMatchRom(*p_owMaster, romId);
IanBenzMaxim 74:23be10c32fa3 130
IanBenzMaxim 74:23be10c32fa3 131 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 132 {
j3 7:78a8857b3810 133 // seed the crc
j3 7:78a8857b3810 134 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 135
j3 7:78a8857b3810 136 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 137 send_block[send_cnt] = WriteDataNoStopCmd;
j3 7:78a8857b3810 138 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 139
j3 7:78a8857b3810 140 // I2C Address
j3 7:78a8857b3810 141 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 142 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 143
j3 7:78a8857b3810 144 // Length field
j3 7:78a8857b3810 145 send_block[send_cnt] = length;
j3 7:78a8857b3810 146 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 147
j3 7:78a8857b3810 148 // Form the write data
IanBenzMaxim 74:23be10c32fa3 149 for (size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 150 {
j3 7:78a8857b3810 151 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 152 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 153 }
IanBenzMaxim 74:23be10c32fa3 154
j3 7:78a8857b3810 155 // Form the CRC16
IanBenzMaxim 74:23be10c32fa3 156 _crc16 = _crc16 ^ 0xFFFF;
j3 7:78a8857b3810 157 send_block[send_cnt++] = ((uint8_t)(_crc16 & 0xFF));
j3 7:78a8857b3810 158 send_block[send_cnt++] = ((uint8_t)((_crc16 >> 8) & 0xFF));
IanBenzMaxim 74:23be10c32fa3 159
j3 7:78a8857b3810 160 // Send Packet
j3 17:b646b1e3970b 161 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
j3 7:78a8857b3810 162 }
IanBenzMaxim 74:23be10c32fa3 163
j3 17:b646b1e3970b 164 return bridge_result;
j3 4:ca27db159b10 165 }
j3 4:ca27db159b10 166
j3 4:ca27db159b10 167
j3 4:ca27db159b10 168 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 169 DS28E17::CmdResult DS28E17::I2C_WriteDataOnly(uint8_t length, uint8_t *data,
IanBenzMaxim 74:23be10c32fa3 170 uint8_t &status, uint8_t &wr_status)
j3 4:ca27db159b10 171 {
IanBenzMaxim 73:2cecc1372acc 172 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 173
j3 7:78a8857b3810 174 size_t send_cnt = 0;
j3 7:78a8857b3810 175 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 176
IanBenzMaxim 76:84e6c4994e29 177 OneWireMaster::CmdResult ow_result = OWMatchRom(*p_owMaster, romId);
IanBenzMaxim 74:23be10c32fa3 178
IanBenzMaxim 74:23be10c32fa3 179 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 180 {
j3 7:78a8857b3810 181 // seed the crc
j3 7:78a8857b3810 182 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 183
j3 7:78a8857b3810 184 // Form the 1-Wire Packet
IanBenzMaxim 74:23be10c32fa3 185
j3 7:78a8857b3810 186 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 187 send_block[send_cnt] = WriteDataOnlyCmd;
j3 7:78a8857b3810 188 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 189
j3 7:78a8857b3810 190 // Length field
j3 7:78a8857b3810 191 send_block[send_cnt] = length;
j3 7:78a8857b3810 192 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 193
j3 7:78a8857b3810 194 // Form the write data
IanBenzMaxim 74:23be10c32fa3 195 for (size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 196 {
j3 7:78a8857b3810 197 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 198 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 199 }
IanBenzMaxim 74:23be10c32fa3 200
j3 7:78a8857b3810 201 // Form the CRC16\
j3 7:78a8857b3810 202 _crc16 = _crc16^0xFFFF;
j3 7:78a8857b3810 203 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 204 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
IanBenzMaxim 74:23be10c32fa3 205
j3 7:78a8857b3810 206 // Send Packet
j3 17:b646b1e3970b 207 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
j3 7:78a8857b3810 208 }
IanBenzMaxim 74:23be10c32fa3 209
j3 17:b646b1e3970b 210 return bridge_result;
j3 4:ca27db159b10 211 }
j3 4:ca27db159b10 212
j3 4:ca27db159b10 213
j3 4:ca27db159b10 214 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 215 DS28E17::CmdResult DS28E17::I2C_WriteDataOnlyWithStop(uint8_t length, uint8_t *data,
IanBenzMaxim 74:23be10c32fa3 216 uint8_t &status, uint8_t &wr_status)
j3 4:ca27db159b10 217 {
IanBenzMaxim 73:2cecc1372acc 218 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 219
j3 7:78a8857b3810 220 size_t send_cnt = 0;
j3 7:78a8857b3810 221 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 222
IanBenzMaxim 76:84e6c4994e29 223 OneWireMaster::CmdResult ow_result = OWMatchRom(*p_owMaster, romId);
IanBenzMaxim 74:23be10c32fa3 224
IanBenzMaxim 74:23be10c32fa3 225 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 226 {
j3 7:78a8857b3810 227 //seed the crc
j3 7:78a8857b3810 228 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 229
j3 7:78a8857b3810 230 // Form the 1-Wire Packet
IanBenzMaxim 74:23be10c32fa3 231
j3 7:78a8857b3810 232 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 233 send_block[send_cnt] = WriteDataOnlyWithStopCmd;
j3 7:78a8857b3810 234 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 235
j3 7:78a8857b3810 236 // Length field
j3 7:78a8857b3810 237 send_block[send_cnt] = length;
j3 7:78a8857b3810 238 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 239
j3 7:78a8857b3810 240 // Form the write data
IanBenzMaxim 74:23be10c32fa3 241 for (size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 242 {
j3 7:78a8857b3810 243 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 244 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 245 }
IanBenzMaxim 74:23be10c32fa3 246
j3 7:78a8857b3810 247 // Form the CRC16
IanBenzMaxim 74:23be10c32fa3 248 _crc16 = _crc16 ^ 0xFFFF;
j3 7:78a8857b3810 249 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 250 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
IanBenzMaxim 74:23be10c32fa3 251
j3 7:78a8857b3810 252 // Send Packet
j3 17:b646b1e3970b 253 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
IanBenzMaxim 74:23be10c32fa3 254 }
IanBenzMaxim 74:23be10c32fa3 255
j3 17:b646b1e3970b 256 return bridge_result;
j3 4:ca27db159b10 257 }
j3 4:ca27db159b10 258
j3 4:ca27db159b10 259
j3 4:ca27db159b10 260 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 261 DS28E17::CmdResult DS28E17::I2C_WriteReadDataWithStop(uint8_t I2C_addr, uint8_t length,
IanBenzMaxim 74:23be10c32fa3 262 uint8_t *data, uint8_t nu_bytes_read,
IanBenzMaxim 74:23be10c32fa3 263 uint8_t &status, uint8_t &wr_status,
IanBenzMaxim 74:23be10c32fa3 264 uint8_t *read_data)
j3 4:ca27db159b10 265 {
IanBenzMaxim 73:2cecc1372acc 266 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 267
j3 7:78a8857b3810 268 size_t send_cnt = 0;
j3 7:78a8857b3810 269 size_t idx = 0;
j3 7:78a8857b3810 270 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 271
IanBenzMaxim 76:84e6c4994e29 272 OneWireMaster::CmdResult ow_result = OWMatchRom(*p_owMaster, romId);
IanBenzMaxim 74:23be10c32fa3 273
IanBenzMaxim 74:23be10c32fa3 274 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 275 {
j3 7:78a8857b3810 276 //seed the crc
j3 7:78a8857b3810 277 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 278
j3 7:78a8857b3810 279 // Form the 1-Wire Packet
IanBenzMaxim 74:23be10c32fa3 280
j3 7:78a8857b3810 281 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 282 send_block[send_cnt] = WriteReadDataWithStopCmd;
j3 7:78a8857b3810 283 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 284
j3 7:78a8857b3810 285 // I2C Address
j3 7:78a8857b3810 286 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 287 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 288
j3 7:78a8857b3810 289 // Length field
j3 7:78a8857b3810 290 send_block[send_cnt] = length;
j3 7:78a8857b3810 291 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 292
j3 7:78a8857b3810 293 // Form the write data
IanBenzMaxim 74:23be10c32fa3 294 for (idx = 0; idx < length; idx++)
j3 7:78a8857b3810 295 {
j3 7:78a8857b3810 296 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 297 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 298 }
IanBenzMaxim 74:23be10c32fa3 299
j3 7:78a8857b3810 300 // # of bytes to Read field
j3 7:78a8857b3810 301 send_block[send_cnt] = nu_bytes_read;
j3 7:78a8857b3810 302 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 303
j3 7:78a8857b3810 304 // Form the CRC16
IanBenzMaxim 74:23be10c32fa3 305 _crc16 = _crc16 ^ 0xFFFF;
j3 7:78a8857b3810 306 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 307 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
IanBenzMaxim 74:23be10c32fa3 308
j3 7:78a8857b3810 309 // Send Packet
j3 17:b646b1e3970b 310 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
IanBenzMaxim 74:23be10c32fa3 311 if (bridge_result == DS28E17::Success)
j3 7:78a8857b3810 312 {
IanBenzMaxim 76:84e6c4994e29 313 ow_result = p_owMaster->OWReadBlock(read_data, nu_bytes_read);
IanBenzMaxim 74:23be10c32fa3 314 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 315 {
IanBenzMaxim 73:2cecc1372acc 316 bridge_result = DS28E17::Success;
j3 7:78a8857b3810 317 }
j3 17:b646b1e3970b 318 else
j3 17:b646b1e3970b 319 {
IanBenzMaxim 73:2cecc1372acc 320 bridge_result = DS28E17::CommsReadBlockError;
j3 17:b646b1e3970b 321 }
j3 7:78a8857b3810 322 }
j3 7:78a8857b3810 323 }
IanBenzMaxim 74:23be10c32fa3 324
j3 17:b646b1e3970b 325 return bridge_result;
j3 4:ca27db159b10 326 }
j3 4:ca27db159b10 327
j3 4:ca27db159b10 328
j3 4:ca27db159b10 329 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 330 DS28E17::CmdResult DS28E17::I2C_ReadDataWithStop(uint8_t I2C_addr, uint8_t nu_bytes_read,
IanBenzMaxim 74:23be10c32fa3 331 uint8_t &status, uint8_t *read_data)
j3 4:ca27db159b10 332 {
IanBenzMaxim 73:2cecc1372acc 333 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 334
j3 7:78a8857b3810 335 size_t send_cnt = 0;
j3 7:78a8857b3810 336 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 337
IanBenzMaxim 76:84e6c4994e29 338 OneWireMaster::CmdResult ow_result = OWMatchRom(*p_owMaster, romId);
IanBenzMaxim 74:23be10c32fa3 339
IanBenzMaxim 74:23be10c32fa3 340 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 341 {
j3 7:78a8857b3810 342 //seed the crc for transmit bytes
j3 7:78a8857b3810 343 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 344
j3 7:78a8857b3810 345 // Form the 1-Wire Packet to send
IanBenzMaxim 74:23be10c32fa3 346
j3 7:78a8857b3810 347 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 348 send_block[send_cnt] = ReadDataWithStopCmd;
j3 7:78a8857b3810 349 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 350
j3 7:78a8857b3810 351 // I2C Address
j3 7:78a8857b3810 352 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 353 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 354
j3 7:78a8857b3810 355 // # of bytes to Read field
j3 7:78a8857b3810 356 send_block[send_cnt] = nu_bytes_read;
j3 7:78a8857b3810 357 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 358
j3 7:78a8857b3810 359 // Form the CRC16
IanBenzMaxim 74:23be10c32fa3 360 _crc16 = _crc16 ^ 0xFFFF;
j3 7:78a8857b3810 361 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 362 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
IanBenzMaxim 74:23be10c32fa3 363
j3 7:78a8857b3810 364 // Send Packet
j3 17:b646b1e3970b 365 bridge_result = send_packet(send_block, send_cnt, status);
IanBenzMaxim 74:23be10c32fa3 366 if (bridge_result == DS28E17::Success)
j3 7:78a8857b3810 367 {
IanBenzMaxim 76:84e6c4994e29 368 ow_result = p_owMaster->OWReadBlock(read_data, nu_bytes_read);
IanBenzMaxim 74:23be10c32fa3 369 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 370 {
IanBenzMaxim 73:2cecc1372acc 371 bridge_result = DS28E17::Success;
j3 7:78a8857b3810 372 }
j3 17:b646b1e3970b 373 else
j3 17:b646b1e3970b 374 {
IanBenzMaxim 73:2cecc1372acc 375 bridge_result = DS28E17::CommsReadBlockError;
j3 17:b646b1e3970b 376 }
j3 7:78a8857b3810 377 }
j3 7:78a8857b3810 378 }
IanBenzMaxim 74:23be10c32fa3 379
j3 17:b646b1e3970b 380 return bridge_result;
j3 4:ca27db159b10 381 }
j3 4:ca27db159b10 382
j3 4:ca27db159b10 383
j3 4:ca27db159b10 384 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 385 DS28E17::CmdResult DS28E17::WriteConfigReg(uint8_t data)
j3 7:78a8857b3810 386 {
IanBenzMaxim 73:2cecc1372acc 387 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 388
IanBenzMaxim 76:84e6c4994e29 389 OneWireMaster::CmdResult ow_result = OWMatchRom(*p_owMaster, romId);
IanBenzMaxim 74:23be10c32fa3 390
IanBenzMaxim 74:23be10c32fa3 391 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 392 {
j3 7:78a8857b3810 393 // Send CMD and Data
IanBenzMaxim 75:8b627804927c 394 uint8_t send_block[] = { WriteConfigurationCmd, data };
IanBenzMaxim 74:23be10c32fa3 395
IanBenzMaxim 76:84e6c4994e29 396 ow_result = p_owMaster->OWWriteBlock(send_block, 2);
IanBenzMaxim 74:23be10c32fa3 397 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 398 {
j3 17:b646b1e3970b 399 _i2c_speed = data & 0x03; // Save off _i2c_speed setting to be used by other functions
IanBenzMaxim 73:2cecc1372acc 400 bridge_result = DS28E17::Success;
j3 17:b646b1e3970b 401 }
j3 17:b646b1e3970b 402 else
j3 17:b646b1e3970b 403 {
IanBenzMaxim 73:2cecc1372acc 404 bridge_result = DS28E17::CommsWriteBlockError;
j3 17:b646b1e3970b 405 }
j3 7:78a8857b3810 406 }
IanBenzMaxim 74:23be10c32fa3 407
j3 17:b646b1e3970b 408 return bridge_result;
j3 7:78a8857b3810 409 }
j3 7:78a8857b3810 410
j3 7:78a8857b3810 411
j3 7:78a8857b3810 412 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 413 DS28E17::CmdResult DS28E17::ReadConfigReg(uint8_t & config)
j3 7:78a8857b3810 414 {
IanBenzMaxim 73:2cecc1372acc 415 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 416
IanBenzMaxim 76:84e6c4994e29 417 OneWireMaster::CmdResult ow_result = OWMatchRom(*p_owMaster, romId);
IanBenzMaxim 74:23be10c32fa3 418
IanBenzMaxim 74:23be10c32fa3 419 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 420 {
j3 7:78a8857b3810 421 // Send CMD and receive Data
IanBenzMaxim 76:84e6c4994e29 422 ow_result = p_owMaster->OWWriteByte(ReadConfigurationCmd);
IanBenzMaxim 74:23be10c32fa3 423 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 424 {
IanBenzMaxim 76:84e6c4994e29 425 ow_result = p_owMaster->OWReadByte(config);
IanBenzMaxim 74:23be10c32fa3 426 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 427 {
IanBenzMaxim 73:2cecc1372acc 428 bridge_result = DS28E17::Success;
j3 17:b646b1e3970b 429 }
j3 17:b646b1e3970b 430 else
j3 17:b646b1e3970b 431 {
IanBenzMaxim 73:2cecc1372acc 432 bridge_result = DS28E17::CommsReadByteError;
j3 17:b646b1e3970b 433 }
j3 17:b646b1e3970b 434 }
j3 17:b646b1e3970b 435 else
j3 17:b646b1e3970b 436 {
IanBenzMaxim 73:2cecc1372acc 437 bridge_result = DS28E17::CommsWriteByteError;
j3 17:b646b1e3970b 438 }
j3 7:78a8857b3810 439 }
IanBenzMaxim 74:23be10c32fa3 440
j3 17:b646b1e3970b 441 return bridge_result;
j3 7:78a8857b3810 442 }
j3 7:78a8857b3810 443
j3 7:78a8857b3810 444
j3 7:78a8857b3810 445 //*********************************************************************
IanBenzMaxim 75:8b627804927c 446 DS28E17::CmdResult DS28E17::EnableSleepMode()
j3 7:78a8857b3810 447 {
IanBenzMaxim 73:2cecc1372acc 448 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 449
IanBenzMaxim 76:84e6c4994e29 450 OneWireMaster::CmdResult ow_result = OWMatchRom(*p_owMaster, romId);
IanBenzMaxim 74:23be10c32fa3 451
IanBenzMaxim 74:23be10c32fa3 452 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 453 {
j3 7:78a8857b3810 454 // Send CMD
IanBenzMaxim 76:84e6c4994e29 455 ow_result = p_owMaster->OWWriteByte(EnableSleepModeCmd);
IanBenzMaxim 74:23be10c32fa3 456 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 457 {
IanBenzMaxim 73:2cecc1372acc 458 bridge_result = DS28E17::Success;
j3 17:b646b1e3970b 459 }
j3 17:b646b1e3970b 460 else
j3 17:b646b1e3970b 461 {
IanBenzMaxim 73:2cecc1372acc 462 bridge_result = DS28E17::CommsWriteByteError;
j3 17:b646b1e3970b 463 }
j3 7:78a8857b3810 464 }
IanBenzMaxim 74:23be10c32fa3 465
j3 17:b646b1e3970b 466 return bridge_result;
j3 7:78a8857b3810 467 }
j3 7:78a8857b3810 468
j3 7:78a8857b3810 469
j3 7:78a8857b3810 470 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 471 DS28E17::CmdResult DS28E17::ReadDeviceRevision(uint8_t & rev)
j3 7:78a8857b3810 472 {
IanBenzMaxim 73:2cecc1372acc 473 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 474
IanBenzMaxim 76:84e6c4994e29 475 OneWireMaster::CmdResult ow_result = OWMatchRom(*p_owMaster, romId);
IanBenzMaxim 74:23be10c32fa3 476
IanBenzMaxim 74:23be10c32fa3 477 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 478 {
j3 7:78a8857b3810 479 // Send CMD and receive Data
IanBenzMaxim 76:84e6c4994e29 480 ow_result = p_owMaster->OWWriteByte(ReadDeviceRevisionCmd);
IanBenzMaxim 74:23be10c32fa3 481 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 482 {
IanBenzMaxim 76:84e6c4994e29 483 ow_result = p_owMaster->OWReadByte(rev);
IanBenzMaxim 74:23be10c32fa3 484 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 485 {
IanBenzMaxim 73:2cecc1372acc 486 bridge_result = DS28E17::Success;
j3 17:b646b1e3970b 487 }
j3 17:b646b1e3970b 488 else
j3 17:b646b1e3970b 489 {
IanBenzMaxim 73:2cecc1372acc 490 bridge_result = DS28E17::CommsReadByteError;
j3 17:b646b1e3970b 491 }
j3 17:b646b1e3970b 492 }
j3 17:b646b1e3970b 493 else
j3 17:b646b1e3970b 494 {
IanBenzMaxim 73:2cecc1372acc 495 bridge_result = DS28E17::CommsWriteByteError;
j3 17:b646b1e3970b 496 }
j3 7:78a8857b3810 497 }
IanBenzMaxim 74:23be10c32fa3 498
j3 17:b646b1e3970b 499 return bridge_result;
j3 7:78a8857b3810 500 }
j3 7:78a8857b3810 501
j3 7:78a8857b3810 502
j3 7:78a8857b3810 503 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 504 uint16_t DS28E17::docrc16(uint16_t data)
j3 7:78a8857b3810 505 {
j3 7:78a8857b3810 506 data = ((data ^ (_crc16 & 0xff)) & 0xff);
j3 7:78a8857b3810 507 _crc16 >>= 8;
j3 7:78a8857b3810 508
IanBenzMaxim 73:2cecc1372acc 509 if (DS28E17::_oddparity[data & 0xf] ^ DS28E17::_oddparity[data >> 4])
j3 7:78a8857b3810 510 {
j3 7:78a8857b3810 511 _crc16 ^= 0xc001;
j3 7:78a8857b3810 512 }
j3 7:78a8857b3810 513
j3 7:78a8857b3810 514 data <<= 6;
IanBenzMaxim 74:23be10c32fa3 515 _crc16 ^= data;
j3 7:78a8857b3810 516 data <<= 1;
IanBenzMaxim 74:23be10c32fa3 517 _crc16 ^= data;
j3 7:78a8857b3810 518
j3 7:78a8857b3810 519 return _crc16;
j3 7:78a8857b3810 520 }
j3 7:78a8857b3810 521
j3 7:78a8857b3810 522
j3 17:b646b1e3970b 523 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 524 DS28E17::CmdResult DS28E17::send_packet(const uint8_t * data, uint8_t data_length,
j3 17:b646b1e3970b 525 uint8_t & status, uint8_t & wr_status)
j3 17:b646b1e3970b 526 {
IanBenzMaxim 73:2cecc1372acc 527 DS28E17::CmdResult bridge_result = DS28E17::CommsWriteBlockError;
j3 17:b646b1e3970b 528 uint32_t poll_count = 0;
IanBenzMaxim 74:23be10c32fa3 529
IanBenzMaxim 76:84e6c4994e29 530 OneWireMaster::CmdResult ow_result = p_owMaster->OWWriteBlock(data, data_length);
IanBenzMaxim 74:23be10c32fa3 531
IanBenzMaxim 74:23be10c32fa3 532 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 533 {
j3 17:b646b1e3970b 534 // Poll for Zero 1-Wire bit and return if an error occurs
j3 17:b646b1e3970b 535 uint8_t recvbit = 0x01;
IanBenzMaxim 74:23be10c32fa3 536 do
j3 17:b646b1e3970b 537 {
IanBenzMaxim 76:84e6c4994e29 538 ow_result = p_owMaster->OWReadBit(recvbit);
IanBenzMaxim 75:8b627804927c 539 } while (recvbit && (poll_count++ < pollLimit) && (ow_result == OneWireMaster::Success));
j3 17:b646b1e3970b 540
IanBenzMaxim 74:23be10c32fa3 541 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 542 {
IanBenzMaxim 75:8b627804927c 543 if (poll_count < pollLimit)
j3 17:b646b1e3970b 544 {
j3 17:b646b1e3970b 545 //Read Status and write status
j3 17:b646b1e3970b 546 uint8_t read_block[2];
IanBenzMaxim 74:23be10c32fa3 547
IanBenzMaxim 76:84e6c4994e29 548 ow_result = p_owMaster->OWReadBlock(read_block, 2);
IanBenzMaxim 74:23be10c32fa3 549
IanBenzMaxim 74:23be10c32fa3 550 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 551 {
j3 17:b646b1e3970b 552 status = read_block[0];
j3 17:b646b1e3970b 553 wr_status = read_block[1];
IanBenzMaxim 73:2cecc1372acc 554 bridge_result = DS28E17::Success;
IanBenzMaxim 74:23be10c32fa3 555 }
j3 17:b646b1e3970b 556 else
j3 17:b646b1e3970b 557 {
IanBenzMaxim 74:23be10c32fa3 558 bridge_result = DS28E17::CommsReadBlockError;
j3 17:b646b1e3970b 559 }
IanBenzMaxim 74:23be10c32fa3 560 }
IanBenzMaxim 74:23be10c32fa3 561 else
j3 17:b646b1e3970b 562 {
IanBenzMaxim 73:2cecc1372acc 563 bridge_result = DS28E17::TimeoutError;
j3 17:b646b1e3970b 564 }
IanBenzMaxim 74:23be10c32fa3 565 }
IanBenzMaxim 74:23be10c32fa3 566 else
j3 17:b646b1e3970b 567 {
IanBenzMaxim 73:2cecc1372acc 568 bridge_result = DS28E17::CommsReadBitError;
j3 17:b646b1e3970b 569 }
IanBenzMaxim 74:23be10c32fa3 570 }
IanBenzMaxim 74:23be10c32fa3 571
j3 17:b646b1e3970b 572 return bridge_result;
j3 17:b646b1e3970b 573 }
j3 17:b646b1e3970b 574
j3 17:b646b1e3970b 575
j3 17:b646b1e3970b 576 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 577 DS28E17::CmdResult DS28E17::send_packet(const uint8_t * data, uint8_t data_length,
j3 17:b646b1e3970b 578 uint8_t & status)
j3 17:b646b1e3970b 579 {
IanBenzMaxim 73:2cecc1372acc 580 DS28E17::CmdResult bridge_result = DS28E17::CommsWriteBlockError;
j3 17:b646b1e3970b 581 uint32_t poll_count = 0;
IanBenzMaxim 74:23be10c32fa3 582
IanBenzMaxim 76:84e6c4994e29 583 OneWireMaster::CmdResult ow_result = p_owMaster->OWWriteBlock(data, data_length);
IanBenzMaxim 74:23be10c32fa3 584
IanBenzMaxim 74:23be10c32fa3 585 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 586 {
j3 17:b646b1e3970b 587 // Poll for Zero 1-Wire bit and return if an error occurs
j3 17:b646b1e3970b 588 uint8_t recvbit = 0x01;
IanBenzMaxim 74:23be10c32fa3 589 do
j3 17:b646b1e3970b 590 {
IanBenzMaxim 76:84e6c4994e29 591 ow_result = p_owMaster->OWReadBit(recvbit);
IanBenzMaxim 75:8b627804927c 592 } while (recvbit && (poll_count++ < pollLimit) && (ow_result == OneWireMaster::Success));
j3 17:b646b1e3970b 593
IanBenzMaxim 74:23be10c32fa3 594 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 595 {
IanBenzMaxim 75:8b627804927c 596 if (poll_count < pollLimit)
j3 17:b646b1e3970b 597 {
j3 17:b646b1e3970b 598 //Read Status
IanBenzMaxim 76:84e6c4994e29 599 ow_result = p_owMaster->OWReadByte(status);
IanBenzMaxim 74:23be10c32fa3 600 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 601 {
IanBenzMaxim 73:2cecc1372acc 602 bridge_result = DS28E17::Success;
IanBenzMaxim 74:23be10c32fa3 603 }
j3 17:b646b1e3970b 604 else
j3 17:b646b1e3970b 605 {
IanBenzMaxim 73:2cecc1372acc 606 bridge_result = DS28E17::CommsReadByteError;
j3 17:b646b1e3970b 607 }
IanBenzMaxim 74:23be10c32fa3 608 }
IanBenzMaxim 74:23be10c32fa3 609 else
j3 17:b646b1e3970b 610 {
IanBenzMaxim 73:2cecc1372acc 611 bridge_result = DS28E17::TimeoutError;
j3 17:b646b1e3970b 612 }
IanBenzMaxim 74:23be10c32fa3 613 }
IanBenzMaxim 74:23be10c32fa3 614 else
j3 17:b646b1e3970b 615 {
IanBenzMaxim 73:2cecc1372acc 616 bridge_result = DS28E17::CommsReadBitError;
j3 17:b646b1e3970b 617 }
IanBenzMaxim 74:23be10c32fa3 618 }
IanBenzMaxim 74:23be10c32fa3 619
j3 17:b646b1e3970b 620 return bridge_result;
j3 17:b646b1e3970b 621 }
j3 17:b646b1e3970b 622