Mike Fruge / OneWire

Implementation of 1-Wire with added Alarm Search Functionality

Dependents:   Max32630_One_Wire_Interface

Bridge/DS28E17/DS28E17.cpp@75:8b627804927c, 2016-05-13 (annotated)

Committer:
IanBenzMaxim
Date:
Fri May 13 14:52:50 2016 -0500
Revision:
75:8b627804927c
Parent:
74:23be10c32fa3
Child:
76:84e6c4994e29
Code cleanup.

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"
j3 4:ca27db159b10 35
IanBenzMaxim 73:2cecc1372acc 36 using OneWire::Bridge::DS28E17;
IanBenzMaxim 73:2cecc1372acc 37 using OneWire::Masters::OneWireMaster;
j3 4:ca27db159b10 38
IanBenzMaxim 75:8b627804927c 39
IanBenzMaxim 75:8b627804927c 40 enum Command
IanBenzMaxim 75:8b627804927c 41 {
IanBenzMaxim 75:8b627804927c 42 WriteDataWithStopCmd = 0x4B,
IanBenzMaxim 75:8b627804927c 43 WriteDataNoStopCmd = 0x5A,
IanBenzMaxim 75:8b627804927c 44 WriteDataOnlyCmd = 0x69,
IanBenzMaxim 75:8b627804927c 45 WriteDataOnlyWithStopCmd = 0x78,
IanBenzMaxim 75:8b627804927c 46 ReadDataWithStopCmd = 0x87,
IanBenzMaxim 75:8b627804927c 47 WriteReadDataWithStopCmd = 0x2D,
IanBenzMaxim 75:8b627804927c 48 WriteConfigurationCmd = 0xD2,
IanBenzMaxim 75:8b627804927c 49 ReadConfigurationCmd = 0xE1,
IanBenzMaxim 75:8b627804927c 50 EnableSleepModeCmd = 0x1E,
IanBenzMaxim 75:8b627804927c 51 ReadDeviceRevisionCmd = 0xC3
IanBenzMaxim 75:8b627804927c 52 };
IanBenzMaxim 75:8b627804927c 53
IanBenzMaxim 75:8b627804927c 54
IanBenzMaxim 73:2cecc1372acc 55 const uint16_t DS28E17::_oddparity[] = { 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0 };
j3 4:ca27db159b10 56
j3 4:ca27db159b10 57
j3 4:ca27db159b10 58 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 59 DS28E17::DS28E17(OneWireMaster &owm)
IanBenzMaxim 74:23be10c32fa3 60 : _owm(owm)
j3 4:ca27db159b10 61 {
IanBenzMaxim 74:23be10c32fa3 62
j3 4:ca27db159b10 63 }
j3 4:ca27db159b10 64
j3 4:ca27db159b10 65
j3 4:ca27db159b10 66 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 67 DS28E17::CmdResult DS28E17::I2C_WriteDataWithStop(uint8_t I2C_addr, uint8_t length,
IanBenzMaxim 74:23be10c32fa3 68 uint8_t *data, uint8_t &status,
IanBenzMaxim 74:23be10c32fa3 69 uint8_t &wr_status)
j3 4:ca27db159b10 70 {
IanBenzMaxim 73:2cecc1372acc 71 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 72
j3 7:78a8857b3810 73 size_t send_cnt = 0;
j3 7:78a8857b3810 74 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 75
IanBenzMaxim 75:8b627804927c 76 OneWireMaster::CmdResult ow_result = _owm.OWMatchRom(romId);
IanBenzMaxim 74:23be10c32fa3 77
IanBenzMaxim 74:23be10c32fa3 78 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 79 {
j3 7:78a8857b3810 80 //seed the crc
j3 7:78a8857b3810 81 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 82
j3 7:78a8857b3810 83 // Form the 1-Wire Packet
IanBenzMaxim 74:23be10c32fa3 84
j3 7:78a8857b3810 85 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 86 send_block[send_cnt] = WriteDataWithStopCmd;
j3 7:78a8857b3810 87 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 88
j3 7:78a8857b3810 89 // I2C Address
j3 7:78a8857b3810 90 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 91 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 92
j3 7:78a8857b3810 93 // Length field
j3 7:78a8857b3810 94 send_block[send_cnt] = length;
j3 7:78a8857b3810 95 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 96
j3 7:78a8857b3810 97 // Form the write data
IanBenzMaxim 74:23be10c32fa3 98 for (size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 99 {
j3 7:78a8857b3810 100 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 101 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 102 }
IanBenzMaxim 74:23be10c32fa3 103
j3 7:78a8857b3810 104 // Form the CRC16
IanBenzMaxim 74:23be10c32fa3 105 _crc16 = _crc16 ^ 0xFFFF;
j3 7:78a8857b3810 106 send_block[send_cnt++] = ((uint8_t)(_crc16 & 0xFF));
j3 7:78a8857b3810 107 send_block[send_cnt++] = ((uint8_t)((_crc16 >> 8) & 0xFF));
IanBenzMaxim 74:23be10c32fa3 108
j3 7:78a8857b3810 109 // Send Packet
j3 17:b646b1e3970b 110 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
j3 7:78a8857b3810 111 }
IanBenzMaxim 74:23be10c32fa3 112
j3 17:b646b1e3970b 113 return bridge_result;
j3 4:ca27db159b10 114 }
j3 4:ca27db159b10 115
j3 4:ca27db159b10 116
j3 4:ca27db159b10 117 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 118 DS28E17::CmdResult DS28E17::I2C_WriteDataNoStop(uint8_t I2C_addr, uint8_t length,
IanBenzMaxim 74:23be10c32fa3 119 uint8_t *data, uint8_t &status,
IanBenzMaxim 74:23be10c32fa3 120 uint8_t &wr_status)
j3 4:ca27db159b10 121 {
IanBenzMaxim 73:2cecc1372acc 122 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 123
j3 7:78a8857b3810 124 size_t send_cnt = 0;
j3 7:78a8857b3810 125 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 126
IanBenzMaxim 75:8b627804927c 127 OneWireMaster::CmdResult ow_result = _owm.OWMatchRom(romId);
IanBenzMaxim 74:23be10c32fa3 128
IanBenzMaxim 74:23be10c32fa3 129 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 130 {
j3 7:78a8857b3810 131 // seed the crc
j3 7:78a8857b3810 132 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 133
j3 7:78a8857b3810 134 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 135 send_block[send_cnt] = WriteDataNoStopCmd;
j3 7:78a8857b3810 136 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 137
j3 7:78a8857b3810 138 // I2C Address
j3 7:78a8857b3810 139 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 140 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 141
j3 7:78a8857b3810 142 // Length field
j3 7:78a8857b3810 143 send_block[send_cnt] = length;
j3 7:78a8857b3810 144 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 145
j3 7:78a8857b3810 146 // Form the write data
IanBenzMaxim 74:23be10c32fa3 147 for (size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 148 {
j3 7:78a8857b3810 149 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 150 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 151 }
IanBenzMaxim 74:23be10c32fa3 152
j3 7:78a8857b3810 153 // Form the CRC16
IanBenzMaxim 74:23be10c32fa3 154 _crc16 = _crc16 ^ 0xFFFF;
j3 7:78a8857b3810 155 send_block[send_cnt++] = ((uint8_t)(_crc16 & 0xFF));
j3 7:78a8857b3810 156 send_block[send_cnt++] = ((uint8_t)((_crc16 >> 8) & 0xFF));
IanBenzMaxim 74:23be10c32fa3 157
j3 7:78a8857b3810 158 // Send Packet
j3 17:b646b1e3970b 159 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
j3 7:78a8857b3810 160 }
IanBenzMaxim 74:23be10c32fa3 161
j3 17:b646b1e3970b 162 return bridge_result;
j3 4:ca27db159b10 163 }
j3 4:ca27db159b10 164
j3 4:ca27db159b10 165
j3 4:ca27db159b10 166 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 167 DS28E17::CmdResult DS28E17::I2C_WriteDataOnly(uint8_t length, uint8_t *data,
IanBenzMaxim 74:23be10c32fa3 168 uint8_t &status, uint8_t &wr_status)
j3 4:ca27db159b10 169 {
IanBenzMaxim 73:2cecc1372acc 170 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 171
j3 7:78a8857b3810 172 size_t send_cnt = 0;
j3 7:78a8857b3810 173 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 174
IanBenzMaxim 75:8b627804927c 175 OneWireMaster::CmdResult ow_result = _owm.OWMatchRom(romId);
IanBenzMaxim 74:23be10c32fa3 176
IanBenzMaxim 74:23be10c32fa3 177 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 178 {
j3 7:78a8857b3810 179 // seed the crc
j3 7:78a8857b3810 180 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 181
j3 7:78a8857b3810 182 // Form the 1-Wire Packet
IanBenzMaxim 74:23be10c32fa3 183
j3 7:78a8857b3810 184 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 185 send_block[send_cnt] = WriteDataOnlyCmd;
j3 7:78a8857b3810 186 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 187
j3 7:78a8857b3810 188 // Length field
j3 7:78a8857b3810 189 send_block[send_cnt] = length;
j3 7:78a8857b3810 190 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 191
j3 7:78a8857b3810 192 // Form the write data
IanBenzMaxim 74:23be10c32fa3 193 for (size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 194 {
j3 7:78a8857b3810 195 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 196 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 197 }
IanBenzMaxim 74:23be10c32fa3 198
j3 7:78a8857b3810 199 // Form the CRC16\
j3 7:78a8857b3810 200 _crc16 = _crc16^0xFFFF;
j3 7:78a8857b3810 201 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 202 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
IanBenzMaxim 74:23be10c32fa3 203
j3 7:78a8857b3810 204 // Send Packet
j3 17:b646b1e3970b 205 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
j3 7:78a8857b3810 206 }
IanBenzMaxim 74:23be10c32fa3 207
j3 17:b646b1e3970b 208 return bridge_result;
j3 4:ca27db159b10 209 }
j3 4:ca27db159b10 210
j3 4:ca27db159b10 211
j3 4:ca27db159b10 212 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 213 DS28E17::CmdResult DS28E17::I2C_WriteDataOnlyWithStop(uint8_t length, uint8_t *data,
IanBenzMaxim 74:23be10c32fa3 214 uint8_t &status, uint8_t &wr_status)
j3 4:ca27db159b10 215 {
IanBenzMaxim 73:2cecc1372acc 216 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 217
j3 7:78a8857b3810 218 size_t send_cnt = 0;
j3 7:78a8857b3810 219 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 220
IanBenzMaxim 75:8b627804927c 221 OneWireMaster::CmdResult ow_result = _owm.OWMatchRom(romId);
IanBenzMaxim 74:23be10c32fa3 222
IanBenzMaxim 74:23be10c32fa3 223 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 224 {
j3 7:78a8857b3810 225 //seed the crc
j3 7:78a8857b3810 226 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 227
j3 7:78a8857b3810 228 // Form the 1-Wire Packet
IanBenzMaxim 74:23be10c32fa3 229
j3 7:78a8857b3810 230 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 231 send_block[send_cnt] = WriteDataOnlyWithStopCmd;
j3 7:78a8857b3810 232 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 233
j3 7:78a8857b3810 234 // Length field
j3 7:78a8857b3810 235 send_block[send_cnt] = length;
j3 7:78a8857b3810 236 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 237
j3 7:78a8857b3810 238 // Form the write data
IanBenzMaxim 74:23be10c32fa3 239 for (size_t idx = 0; idx < length; idx++)
j3 7:78a8857b3810 240 {
j3 7:78a8857b3810 241 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 242 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 243 }
IanBenzMaxim 74:23be10c32fa3 244
j3 7:78a8857b3810 245 // Form the CRC16
IanBenzMaxim 74:23be10c32fa3 246 _crc16 = _crc16 ^ 0xFFFF;
j3 7:78a8857b3810 247 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 248 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
IanBenzMaxim 74:23be10c32fa3 249
j3 7:78a8857b3810 250 // Send Packet
j3 17:b646b1e3970b 251 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
IanBenzMaxim 74:23be10c32fa3 252 }
IanBenzMaxim 74:23be10c32fa3 253
j3 17:b646b1e3970b 254 return bridge_result;
j3 4:ca27db159b10 255 }
j3 4:ca27db159b10 256
j3 4:ca27db159b10 257
j3 4:ca27db159b10 258 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 259 DS28E17::CmdResult DS28E17::I2C_WriteReadDataWithStop(uint8_t I2C_addr, uint8_t length,
IanBenzMaxim 74:23be10c32fa3 260 uint8_t *data, uint8_t nu_bytes_read,
IanBenzMaxim 74:23be10c32fa3 261 uint8_t &status, uint8_t &wr_status,
IanBenzMaxim 74:23be10c32fa3 262 uint8_t *read_data)
j3 4:ca27db159b10 263 {
IanBenzMaxim 73:2cecc1372acc 264 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 265
j3 7:78a8857b3810 266 size_t send_cnt = 0;
j3 7:78a8857b3810 267 size_t idx = 0;
j3 7:78a8857b3810 268 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 269
IanBenzMaxim 75:8b627804927c 270 OneWireMaster::CmdResult ow_result = _owm.OWMatchRom(romId);
IanBenzMaxim 74:23be10c32fa3 271
IanBenzMaxim 74:23be10c32fa3 272 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 273 {
j3 7:78a8857b3810 274 //seed the crc
j3 7:78a8857b3810 275 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 276
j3 7:78a8857b3810 277 // Form the 1-Wire Packet
IanBenzMaxim 74:23be10c32fa3 278
j3 7:78a8857b3810 279 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 280 send_block[send_cnt] = WriteReadDataWithStopCmd;
j3 7:78a8857b3810 281 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 282
j3 7:78a8857b3810 283 // I2C Address
j3 7:78a8857b3810 284 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 285 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 286
j3 7:78a8857b3810 287 // Length field
j3 7:78a8857b3810 288 send_block[send_cnt] = length;
j3 7:78a8857b3810 289 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 290
j3 7:78a8857b3810 291 // Form the write data
IanBenzMaxim 74:23be10c32fa3 292 for (idx = 0; idx < length; idx++)
j3 7:78a8857b3810 293 {
j3 7:78a8857b3810 294 send_block[send_cnt] = data[idx];
j3 7:78a8857b3810 295 docrc16(send_block[send_cnt++]);
j3 7:78a8857b3810 296 }
IanBenzMaxim 74:23be10c32fa3 297
j3 7:78a8857b3810 298 // # of bytes to Read field
j3 7:78a8857b3810 299 send_block[send_cnt] = nu_bytes_read;
j3 7:78a8857b3810 300 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 301
j3 7:78a8857b3810 302 // Form the CRC16
IanBenzMaxim 74:23be10c32fa3 303 _crc16 = _crc16 ^ 0xFFFF;
j3 7:78a8857b3810 304 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 305 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
IanBenzMaxim 74:23be10c32fa3 306
j3 7:78a8857b3810 307 // Send Packet
j3 17:b646b1e3970b 308 bridge_result = send_packet(send_block, send_cnt, status, wr_status);
IanBenzMaxim 74:23be10c32fa3 309 if (bridge_result == DS28E17::Success)
j3 7:78a8857b3810 310 {
j3 17:b646b1e3970b 311 ow_result = _owm.OWReadBlock(read_data, nu_bytes_read);
IanBenzMaxim 74:23be10c32fa3 312 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 313 {
IanBenzMaxim 73:2cecc1372acc 314 bridge_result = DS28E17::Success;
j3 7:78a8857b3810 315 }
j3 17:b646b1e3970b 316 else
j3 17:b646b1e3970b 317 {
IanBenzMaxim 73:2cecc1372acc 318 bridge_result = DS28E17::CommsReadBlockError;
j3 17:b646b1e3970b 319 }
j3 7:78a8857b3810 320 }
j3 7:78a8857b3810 321 }
IanBenzMaxim 74:23be10c32fa3 322
j3 17:b646b1e3970b 323 return bridge_result;
j3 4:ca27db159b10 324 }
j3 4:ca27db159b10 325
j3 4:ca27db159b10 326
j3 4:ca27db159b10 327 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 328 DS28E17::CmdResult DS28E17::I2C_ReadDataWithStop(uint8_t I2C_addr, uint8_t nu_bytes_read,
IanBenzMaxim 74:23be10c32fa3 329 uint8_t &status, uint8_t *read_data)
j3 4:ca27db159b10 330 {
IanBenzMaxim 73:2cecc1372acc 331 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 332
j3 7:78a8857b3810 333 size_t send_cnt = 0;
j3 7:78a8857b3810 334 uint8_t send_block[0xff];
IanBenzMaxim 74:23be10c32fa3 335
IanBenzMaxim 75:8b627804927c 336 OneWireMaster::CmdResult ow_result = _owm.OWMatchRom(romId);
IanBenzMaxim 74:23be10c32fa3 337
IanBenzMaxim 74:23be10c32fa3 338 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 339 {
j3 7:78a8857b3810 340 //seed the crc for transmit bytes
j3 7:78a8857b3810 341 _crc16 = 0;
IanBenzMaxim 74:23be10c32fa3 342
j3 7:78a8857b3810 343 // Form the 1-Wire Packet to send
IanBenzMaxim 74:23be10c32fa3 344
j3 7:78a8857b3810 345 // I2C Write Data with Stop command
IanBenzMaxim 75:8b627804927c 346 send_block[send_cnt] = ReadDataWithStopCmd;
j3 7:78a8857b3810 347 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 348
j3 7:78a8857b3810 349 // I2C Address
j3 7:78a8857b3810 350 send_block[send_cnt] = I2C_addr;
j3 7:78a8857b3810 351 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 352
j3 7:78a8857b3810 353 // # of bytes to Read field
j3 7:78a8857b3810 354 send_block[send_cnt] = nu_bytes_read;
j3 7:78a8857b3810 355 docrc16(send_block[send_cnt++]);
IanBenzMaxim 74:23be10c32fa3 356
j3 7:78a8857b3810 357 // Form the CRC16
IanBenzMaxim 74:23be10c32fa3 358 _crc16 = _crc16 ^ 0xFFFF;
j3 7:78a8857b3810 359 send_block[send_cnt++] = (_crc16 & 0xFF);
j3 7:78a8857b3810 360 send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
IanBenzMaxim 74:23be10c32fa3 361
j3 7:78a8857b3810 362 // Send Packet
j3 17:b646b1e3970b 363 bridge_result = send_packet(send_block, send_cnt, status);
IanBenzMaxim 74:23be10c32fa3 364 if (bridge_result == DS28E17::Success)
j3 7:78a8857b3810 365 {
j3 17:b646b1e3970b 366 ow_result = _owm.OWReadBlock(read_data, nu_bytes_read);
IanBenzMaxim 74:23be10c32fa3 367 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 368 {
IanBenzMaxim 73:2cecc1372acc 369 bridge_result = DS28E17::Success;
j3 7:78a8857b3810 370 }
j3 17:b646b1e3970b 371 else
j3 17:b646b1e3970b 372 {
IanBenzMaxim 73:2cecc1372acc 373 bridge_result = DS28E17::CommsReadBlockError;
j3 17:b646b1e3970b 374 }
j3 7:78a8857b3810 375 }
j3 7:78a8857b3810 376 }
IanBenzMaxim 74:23be10c32fa3 377
j3 17:b646b1e3970b 378 return bridge_result;
j3 4:ca27db159b10 379 }
j3 4:ca27db159b10 380
j3 4:ca27db159b10 381
j3 4:ca27db159b10 382 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 383 DS28E17::CmdResult DS28E17::WriteConfigReg(uint8_t data)
j3 7:78a8857b3810 384 {
IanBenzMaxim 73:2cecc1372acc 385 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 386
IanBenzMaxim 75:8b627804927c 387 OneWireMaster::CmdResult ow_result = _owm.OWMatchRom(romId);
IanBenzMaxim 74:23be10c32fa3 388
IanBenzMaxim 74:23be10c32fa3 389 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 390 {
j3 7:78a8857b3810 391 // Send CMD and Data
IanBenzMaxim 75:8b627804927c 392 uint8_t send_block[] = { WriteConfigurationCmd, data };
IanBenzMaxim 74:23be10c32fa3 393
j3 17:b646b1e3970b 394 ow_result = _owm.OWWriteBlock(send_block, 2);
IanBenzMaxim 74:23be10c32fa3 395 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 396 {
j3 17:b646b1e3970b 397 _i2c_speed = data & 0x03; // Save off _i2c_speed setting to be used by other functions
IanBenzMaxim 73:2cecc1372acc 398 bridge_result = DS28E17::Success;
j3 17:b646b1e3970b 399 }
j3 17:b646b1e3970b 400 else
j3 17:b646b1e3970b 401 {
IanBenzMaxim 73:2cecc1372acc 402 bridge_result = DS28E17::CommsWriteBlockError;
j3 17:b646b1e3970b 403 }
j3 7:78a8857b3810 404 }
IanBenzMaxim 74:23be10c32fa3 405
j3 17:b646b1e3970b 406 return bridge_result;
j3 7:78a8857b3810 407 }
j3 7:78a8857b3810 408
j3 7:78a8857b3810 409
j3 7:78a8857b3810 410 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 411 DS28E17::CmdResult DS28E17::ReadConfigReg(uint8_t & config)
j3 7:78a8857b3810 412 {
IanBenzMaxim 73:2cecc1372acc 413 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 414
IanBenzMaxim 75:8b627804927c 415 OneWireMaster::CmdResult ow_result = _owm.OWMatchRom(romId);
IanBenzMaxim 74:23be10c32fa3 416
IanBenzMaxim 74:23be10c32fa3 417 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 418 {
j3 7:78a8857b3810 419 // Send CMD and receive Data
IanBenzMaxim 75:8b627804927c 420 ow_result = _owm.OWWriteByte(ReadConfigurationCmd);
IanBenzMaxim 74:23be10c32fa3 421 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 422 {
j3 17:b646b1e3970b 423 ow_result = _owm.OWReadByte(config);
IanBenzMaxim 74:23be10c32fa3 424 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 425 {
IanBenzMaxim 73:2cecc1372acc 426 bridge_result = DS28E17::Success;
j3 17:b646b1e3970b 427 }
j3 17:b646b1e3970b 428 else
j3 17:b646b1e3970b 429 {
IanBenzMaxim 73:2cecc1372acc 430 bridge_result = DS28E17::CommsReadByteError;
j3 17:b646b1e3970b 431 }
j3 17:b646b1e3970b 432 }
j3 17:b646b1e3970b 433 else
j3 17:b646b1e3970b 434 {
IanBenzMaxim 73:2cecc1372acc 435 bridge_result = DS28E17::CommsWriteByteError;
j3 17:b646b1e3970b 436 }
j3 7:78a8857b3810 437 }
IanBenzMaxim 74:23be10c32fa3 438
j3 17:b646b1e3970b 439 return bridge_result;
j3 7:78a8857b3810 440 }
j3 7:78a8857b3810 441
j3 7:78a8857b3810 442
j3 7:78a8857b3810 443 //*********************************************************************
IanBenzMaxim 75:8b627804927c 444 DS28E17::CmdResult DS28E17::EnableSleepMode()
j3 7:78a8857b3810 445 {
IanBenzMaxim 73:2cecc1372acc 446 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 447
IanBenzMaxim 75:8b627804927c 448 OneWireMaster::CmdResult ow_result = _owm.OWMatchRom(romId);
IanBenzMaxim 74:23be10c32fa3 449
IanBenzMaxim 74:23be10c32fa3 450 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 451 {
j3 7:78a8857b3810 452 // Send CMD
IanBenzMaxim 75:8b627804927c 453 ow_result = _owm.OWWriteByte(EnableSleepModeCmd);
IanBenzMaxim 74:23be10c32fa3 454 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 455 {
IanBenzMaxim 73:2cecc1372acc 456 bridge_result = DS28E17::Success;
j3 17:b646b1e3970b 457 }
j3 17:b646b1e3970b 458 else
j3 17:b646b1e3970b 459 {
IanBenzMaxim 73:2cecc1372acc 460 bridge_result = DS28E17::CommsWriteByteError;
j3 17:b646b1e3970b 461 }
j3 7:78a8857b3810 462 }
IanBenzMaxim 74:23be10c32fa3 463
j3 17:b646b1e3970b 464 return bridge_result;
j3 7:78a8857b3810 465 }
j3 7:78a8857b3810 466
j3 7:78a8857b3810 467
j3 7:78a8857b3810 468 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 469 DS28E17::CmdResult DS28E17::ReadDeviceRevision(uint8_t & rev)
j3 7:78a8857b3810 470 {
IanBenzMaxim 73:2cecc1372acc 471 DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
IanBenzMaxim 74:23be10c32fa3 472
IanBenzMaxim 75:8b627804927c 473 OneWireMaster::CmdResult ow_result = _owm.OWMatchRom(romId);
IanBenzMaxim 74:23be10c32fa3 474
IanBenzMaxim 74:23be10c32fa3 475 if (ow_result == OneWireMaster::Success)
j3 7:78a8857b3810 476 {
j3 7:78a8857b3810 477 // Send CMD and receive Data
IanBenzMaxim 75:8b627804927c 478 ow_result = _owm.OWWriteByte(ReadDeviceRevisionCmd);
IanBenzMaxim 74:23be10c32fa3 479 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 480 {
j3 17:b646b1e3970b 481 ow_result = _owm.OWReadByte(rev);
IanBenzMaxim 74:23be10c32fa3 482 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 483 {
IanBenzMaxim 73:2cecc1372acc 484 bridge_result = DS28E17::Success;
j3 17:b646b1e3970b 485 }
j3 17:b646b1e3970b 486 else
j3 17:b646b1e3970b 487 {
IanBenzMaxim 73:2cecc1372acc 488 bridge_result = DS28E17::CommsReadByteError;
j3 17:b646b1e3970b 489 }
j3 17:b646b1e3970b 490 }
j3 17:b646b1e3970b 491 else
j3 17:b646b1e3970b 492 {
IanBenzMaxim 73:2cecc1372acc 493 bridge_result = DS28E17::CommsWriteByteError;
j3 17:b646b1e3970b 494 }
j3 7:78a8857b3810 495 }
IanBenzMaxim 74:23be10c32fa3 496
j3 17:b646b1e3970b 497 return bridge_result;
j3 7:78a8857b3810 498 }
j3 7:78a8857b3810 499
j3 7:78a8857b3810 500
j3 7:78a8857b3810 501 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 502 uint16_t DS28E17::docrc16(uint16_t data)
j3 7:78a8857b3810 503 {
j3 7:78a8857b3810 504 data = ((data ^ (_crc16 & 0xff)) & 0xff);
j3 7:78a8857b3810 505 _crc16 >>= 8;
j3 7:78a8857b3810 506
IanBenzMaxim 73:2cecc1372acc 507 if (DS28E17::_oddparity[data & 0xf] ^ DS28E17::_oddparity[data >> 4])
j3 7:78a8857b3810 508 {
j3 7:78a8857b3810 509 _crc16 ^= 0xc001;
j3 7:78a8857b3810 510 }
j3 7:78a8857b3810 511
j3 7:78a8857b3810 512 data <<= 6;
IanBenzMaxim 74:23be10c32fa3 513 _crc16 ^= data;
j3 7:78a8857b3810 514 data <<= 1;
IanBenzMaxim 74:23be10c32fa3 515 _crc16 ^= data;
j3 7:78a8857b3810 516
j3 7:78a8857b3810 517 return _crc16;
j3 7:78a8857b3810 518 }
j3 7:78a8857b3810 519
j3 7:78a8857b3810 520
j3 17:b646b1e3970b 521 //*********************************************************************
IanBenzMaxim 73:2cecc1372acc 522 DS28E17::CmdResult DS28E17::send_packet(const uint8_t * data, uint8_t data_length,
j3 17:b646b1e3970b 523 uint8_t & status, uint8_t & wr_status)
j3 17:b646b1e3970b 524 {
IanBenzMaxim 73:2cecc1372acc 525 DS28E17::CmdResult bridge_result = DS28E17::CommsWriteBlockError;
j3 17:b646b1e3970b 526 uint32_t poll_count = 0;
IanBenzMaxim 74:23be10c32fa3 527
j3 23:e8e403d61359 528 OneWireMaster::CmdResult ow_result = _owm.OWWriteBlock(data, data_length);
IanBenzMaxim 74:23be10c32fa3 529
IanBenzMaxim 74:23be10c32fa3 530 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 531 {
j3 17:b646b1e3970b 532 // Poll for Zero 1-Wire bit and return if an error occurs
j3 17:b646b1e3970b 533 uint8_t recvbit = 0x01;
IanBenzMaxim 74:23be10c32fa3 534 do
j3 17:b646b1e3970b 535 {
j3 17:b646b1e3970b 536 ow_result = _owm.OWReadBit(recvbit);
IanBenzMaxim 75:8b627804927c 537 } while (recvbit && (poll_count++ < pollLimit) && (ow_result == OneWireMaster::Success));
j3 17:b646b1e3970b 538
IanBenzMaxim 74:23be10c32fa3 539 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 540 {
IanBenzMaxim 75:8b627804927c 541 if (poll_count < pollLimit)
j3 17:b646b1e3970b 542 {
j3 17:b646b1e3970b 543 //Read Status and write status
j3 17:b646b1e3970b 544 uint8_t read_block[2];
IanBenzMaxim 74:23be10c32fa3 545
j3 17:b646b1e3970b 546 ow_result = _owm.OWReadBlock(read_block, 2);
IanBenzMaxim 74:23be10c32fa3 547
IanBenzMaxim 74:23be10c32fa3 548 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 549 {
j3 17:b646b1e3970b 550 status = read_block[0];
j3 17:b646b1e3970b 551 wr_status = read_block[1];
IanBenzMaxim 73:2cecc1372acc 552 bridge_result = DS28E17::Success;
IanBenzMaxim 74:23be10c32fa3 553 }
j3 17:b646b1e3970b 554 else
j3 17:b646b1e3970b 555 {
IanBenzMaxim 74:23be10c32fa3 556 bridge_result = DS28E17::CommsReadBlockError;
j3 17:b646b1e3970b 557 }
IanBenzMaxim 74:23be10c32fa3 558 }
IanBenzMaxim 74:23be10c32fa3 559 else
j3 17:b646b1e3970b 560 {
IanBenzMaxim 73:2cecc1372acc 561 bridge_result = DS28E17::TimeoutError;
j3 17:b646b1e3970b 562 }
IanBenzMaxim 74:23be10c32fa3 563 }
IanBenzMaxim 74:23be10c32fa3 564 else
j3 17:b646b1e3970b 565 {
IanBenzMaxim 73:2cecc1372acc 566 bridge_result = DS28E17::CommsReadBitError;
j3 17:b646b1e3970b 567 }
IanBenzMaxim 74:23be10c32fa3 568 }
IanBenzMaxim 74:23be10c32fa3 569
j3 17:b646b1e3970b 570 return bridge_result;
j3 17:b646b1e3970b 571 }
j3 17:b646b1e3970b 572
j3 17:b646b1e3970b 573
j3 17:b646b1e3970b 574 //*********************************************************************
IanBenzMaxim 74:23be10c32fa3 575 DS28E17::CmdResult DS28E17::send_packet(const uint8_t * data, uint8_t data_length,
j3 17:b646b1e3970b 576 uint8_t & status)
j3 17:b646b1e3970b 577 {
IanBenzMaxim 73:2cecc1372acc 578 DS28E17::CmdResult bridge_result = DS28E17::CommsWriteBlockError;
j3 17:b646b1e3970b 579 uint32_t poll_count = 0;
IanBenzMaxim 74:23be10c32fa3 580
j3 23:e8e403d61359 581 OneWireMaster::CmdResult ow_result = _owm.OWWriteBlock(data, data_length);
IanBenzMaxim 74:23be10c32fa3 582
IanBenzMaxim 74:23be10c32fa3 583 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 584 {
j3 17:b646b1e3970b 585 // Poll for Zero 1-Wire bit and return if an error occurs
j3 17:b646b1e3970b 586 uint8_t recvbit = 0x01;
IanBenzMaxim 74:23be10c32fa3 587 do
j3 17:b646b1e3970b 588 {
j3 17:b646b1e3970b 589 ow_result = _owm.OWReadBit(recvbit);
IanBenzMaxim 75:8b627804927c 590 } while (recvbit && (poll_count++ < pollLimit) && (ow_result == OneWireMaster::Success));
j3 17:b646b1e3970b 591
IanBenzMaxim 74:23be10c32fa3 592 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 593 {
IanBenzMaxim 75:8b627804927c 594 if (poll_count < pollLimit)
j3 17:b646b1e3970b 595 {
j3 17:b646b1e3970b 596 //Read Status
j3 17:b646b1e3970b 597 ow_result = _owm.OWReadByte(status);
IanBenzMaxim 74:23be10c32fa3 598 if (ow_result == OneWireMaster::Success)
j3 17:b646b1e3970b 599 {
IanBenzMaxim 73:2cecc1372acc 600 bridge_result = DS28E17::Success;
IanBenzMaxim 74:23be10c32fa3 601 }
j3 17:b646b1e3970b 602 else
j3 17:b646b1e3970b 603 {
IanBenzMaxim 73:2cecc1372acc 604 bridge_result = DS28E17::CommsReadByteError;
j3 17:b646b1e3970b 605 }
IanBenzMaxim 74:23be10c32fa3 606 }
IanBenzMaxim 74:23be10c32fa3 607 else
j3 17:b646b1e3970b 608 {
IanBenzMaxim 73:2cecc1372acc 609 bridge_result = DS28E17::TimeoutError;
j3 17:b646b1e3970b 610 }
IanBenzMaxim 74:23be10c32fa3 611 }
IanBenzMaxim 74:23be10c32fa3 612 else
j3 17:b646b1e3970b 613 {
IanBenzMaxim 73:2cecc1372acc 614 bridge_result = DS28E17::CommsReadBitError;
j3 17:b646b1e3970b 615 }
IanBenzMaxim 74:23be10c32fa3 616 }
IanBenzMaxim 74:23be10c32fa3 617
j3 17:b646b1e3970b 618 return bridge_result;
j3 17:b646b1e3970b 619 }
j3 17:b646b1e3970b 620