Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
Masters/DS248x/DS248x.cpp@74:23be10c32fa3, 2016-05-13 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Fri May 13 07:48:35 2016 -0500
- Revision:
- 74:23be10c32fa3
- Parent:
- 73:2cecc1372acc
- Child:
- 75:8b627804927c
Assimilated indentation and braces.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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j3 | 1:91e52f8ab8bf | 1 | /******************************************************************//** |
j3 | 1:91e52f8ab8bf | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
j3 | 1:91e52f8ab8bf | 3 | * |
j3 | 1:91e52f8ab8bf | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
j3 | 1:91e52f8ab8bf | 5 | * copy of this software and associated documentation files (the "Software"), |
j3 | 1:91e52f8ab8bf | 6 | * to deal in the Software without restriction, including without limitation |
j3 | 1:91e52f8ab8bf | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
j3 | 1:91e52f8ab8bf | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
j3 | 1:91e52f8ab8bf | 9 | * Software is furnished to do so, subject to the following conditions: |
j3 | 1:91e52f8ab8bf | 10 | * |
j3 | 1:91e52f8ab8bf | 11 | * The above copyright notice and this permission notice shall be included |
j3 | 1:91e52f8ab8bf | 12 | * in all copies or substantial portions of the Software. |
j3 | 1:91e52f8ab8bf | 13 | * |
j3 | 1:91e52f8ab8bf | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
j3 | 1:91e52f8ab8bf | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
j3 | 1:91e52f8ab8bf | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
j3 | 1:91e52f8ab8bf | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
j3 | 1:91e52f8ab8bf | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
j3 | 1:91e52f8ab8bf | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
j3 | 1:91e52f8ab8bf | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
j3 | 1:91e52f8ab8bf | 21 | * |
j3 | 1:91e52f8ab8bf | 22 | * Except as contained in this notice, the name of Maxim Integrated |
j3 | 1:91e52f8ab8bf | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
j3 | 1:91e52f8ab8bf | 24 | * Products, Inc. Branding Policy. |
j3 | 1:91e52f8ab8bf | 25 | * |
j3 | 1:91e52f8ab8bf | 26 | * The mere transfer of this software does not imply any licenses |
j3 | 1:91e52f8ab8bf | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
j3 | 1:91e52f8ab8bf | 28 | * trademarks, maskwork rights, or any other form of intellectual |
j3 | 1:91e52f8ab8bf | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
j3 | 1:91e52f8ab8bf | 30 | * ownership rights. |
j3 | 1:91e52f8ab8bf | 31 | **********************************************************************/ |
j3 | 1:91e52f8ab8bf | 32 | |
IanBenzMaxim | 73:2cecc1372acc | 33 | #include "DS248x.h" |
IanBenzMaxim | 73:2cecc1372acc | 34 | #include "I2C.h" |
j3 | 1:91e52f8ab8bf | 35 | |
IanBenzMaxim | 73:2cecc1372acc | 36 | using OneWire::Masters::OneWireMaster; |
IanBenzMaxim | 73:2cecc1372acc | 37 | using OneWire::Masters::DS248x; |
j3 | 1:91e52f8ab8bf | 38 | |
IanBenzMaxim | 69:f915c4c59a69 | 39 | enum DS248X_STATUS_BITS |
IanBenzMaxim | 69:f915c4c59a69 | 40 | { |
IanBenzMaxim | 74:23be10c32fa3 | 41 | STATUS_1WB = 0x01, |
IanBenzMaxim | 69:f915c4c59a69 | 42 | STATUS_PPD = 0x02, |
IanBenzMaxim | 69:f915c4c59a69 | 43 | STATUS_SD = 0x04, |
IanBenzMaxim | 69:f915c4c59a69 | 44 | STATUS_LL = 0x08, |
IanBenzMaxim | 69:f915c4c59a69 | 45 | STATUS_RST = 0x10, |
IanBenzMaxim | 69:f915c4c59a69 | 46 | STATUS_SBR = 0x20, |
IanBenzMaxim | 69:f915c4c59a69 | 47 | STATUS_TSB = 0x40, |
IanBenzMaxim | 69:f915c4c59a69 | 48 | STATUS_DIR = 0x80 |
IanBenzMaxim | 69:f915c4c59a69 | 49 | }; |
IanBenzMaxim | 69:f915c4c59a69 | 50 | |
IanBenzMaxim | 69:f915c4c59a69 | 51 | static const int I2C_WRITE_OK = 0; |
IanBenzMaxim | 69:f915c4c59a69 | 52 | static const int I2C_READ_OK = 0; |
IanBenzMaxim | 69:f915c4c59a69 | 53 | |
IanBenzMaxim | 73:2cecc1372acc | 54 | uint8_t DS248x::Config::readByte() const |
IanBenzMaxim | 69:f915c4c59a69 | 55 | { |
IanBenzMaxim | 74:23be10c32fa3 | 56 | uint8_t config = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 57 | if (get1WS()) |
IanBenzMaxim | 74:23be10c32fa3 | 58 | { |
IanBenzMaxim | 74:23be10c32fa3 | 59 | config |= 0x08; |
IanBenzMaxim | 74:23be10c32fa3 | 60 | } |
IanBenzMaxim | 74:23be10c32fa3 | 61 | if (getSPU()) |
IanBenzMaxim | 74:23be10c32fa3 | 62 | { |
IanBenzMaxim | 74:23be10c32fa3 | 63 | config |= 0x04; |
IanBenzMaxim | 74:23be10c32fa3 | 64 | } |
IanBenzMaxim | 74:23be10c32fa3 | 65 | if (getPDN()) |
IanBenzMaxim | 74:23be10c32fa3 | 66 | { |
IanBenzMaxim | 74:23be10c32fa3 | 67 | config |= 0x02; |
IanBenzMaxim | 74:23be10c32fa3 | 68 | } |
IanBenzMaxim | 74:23be10c32fa3 | 69 | if (getAPU()) |
IanBenzMaxim | 74:23be10c32fa3 | 70 | { |
IanBenzMaxim | 74:23be10c32fa3 | 71 | config |= 0x01; |
IanBenzMaxim | 74:23be10c32fa3 | 72 | } |
IanBenzMaxim | 74:23be10c32fa3 | 73 | return config; |
IanBenzMaxim | 69:f915c4c59a69 | 74 | } |
IanBenzMaxim | 69:f915c4c59a69 | 75 | |
IanBenzMaxim | 73:2cecc1372acc | 76 | uint8_t DS248x::Config::writeByte() const |
IanBenzMaxim | 69:f915c4c59a69 | 77 | { |
IanBenzMaxim | 74:23be10c32fa3 | 78 | uint8_t config = readByte(); |
IanBenzMaxim | 74:23be10c32fa3 | 79 | return ((~config << 4) | config); |
IanBenzMaxim | 69:f915c4c59a69 | 80 | } |
IanBenzMaxim | 69:f915c4c59a69 | 81 | |
IanBenzMaxim | 73:2cecc1372acc | 82 | void DS248x::Config::reset() |
IanBenzMaxim | 69:f915c4c59a69 | 83 | { |
IanBenzMaxim | 74:23be10c32fa3 | 84 | set1WS(false); |
IanBenzMaxim | 74:23be10c32fa3 | 85 | setSPU(false); |
IanBenzMaxim | 74:23be10c32fa3 | 86 | setPDN(false); |
IanBenzMaxim | 74:23be10c32fa3 | 87 | setAPU(true); |
IanBenzMaxim | 69:f915c4c59a69 | 88 | } |
IanBenzMaxim | 69:f915c4c59a69 | 89 | |
IanBenzMaxim | 73:2cecc1372acc | 90 | DS248x::DS248x(mbed::I2C & i2c_bus, uint8_t adrs) |
IanBenzMaxim | 74:23be10c32fa3 | 91 | :_p_i2c_bus(&i2c_bus), _adrs(adrs), _i2c_owner(false) |
IanBenzMaxim | 73:2cecc1372acc | 92 | { |
IanBenzMaxim | 69:f915c4c59a69 | 93 | |
j3 | 1:91e52f8ab8bf | 94 | } |
j3 | 1:91e52f8ab8bf | 95 | |
IanBenzMaxim | 73:2cecc1372acc | 96 | DS248x::DS248x(PinName sda, PinName scl, uint8_t adrs) |
IanBenzMaxim | 74:23be10c32fa3 | 97 | : _p_i2c_bus(new mbed::I2C(sda, scl)), _adrs(adrs), _i2c_owner(true) |
IanBenzMaxim | 73:2cecc1372acc | 98 | { |
j3 | 1:91e52f8ab8bf | 99 | |
j3 | 1:91e52f8ab8bf | 100 | } |
j3 | 1:91e52f8ab8bf | 101 | |
IanBenzMaxim | 73:2cecc1372acc | 102 | DS248x::~DS248x() |
j3 | 1:91e52f8ab8bf | 103 | { |
IanBenzMaxim | 74:23be10c32fa3 | 104 | if (_i2c_owner) |
j3 | 1:91e52f8ab8bf | 105 | { |
j3 | 1:91e52f8ab8bf | 106 | delete _p_i2c_bus; |
j3 | 1:91e52f8ab8bf | 107 | } |
j3 | 1:91e52f8ab8bf | 108 | } |
j3 | 1:91e52f8ab8bf | 109 | |
IanBenzMaxim | 73:2cecc1372acc | 110 | OneWireMaster::CmdResult DS248x::OWInitMaster(void) |
j3 | 14:7b2886a50321 | 111 | { |
IanBenzMaxim | 69:f915c4c59a69 | 112 | OneWireMaster::CmdResult result; |
j3 | 14:7b2886a50321 | 113 | |
IanBenzMaxim | 69:f915c4c59a69 | 114 | // reset DS2465 |
j3 | 17:b646b1e3970b | 115 | result = reset(); |
IanBenzMaxim | 69:f915c4c59a69 | 116 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 117 | { |
IanBenzMaxim | 74:23be10c32fa3 | 118 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 119 | } |
IanBenzMaxim | 69:f915c4c59a69 | 120 | |
IanBenzMaxim | 69:f915c4c59a69 | 121 | // write the default configuration setup |
IanBenzMaxim | 69:f915c4c59a69 | 122 | Config defaultConfig; |
IanBenzMaxim | 69:f915c4c59a69 | 123 | result = writeConfig(defaultConfig, true); |
j3 | 17:b646b1e3970b | 124 | return result; |
j3 | 2:02d228c25fd4 | 125 | } |
j3 | 2:02d228c25fd4 | 126 | |
IanBenzMaxim | 73:2cecc1372acc | 127 | OneWireMaster::CmdResult DS248x::reset(void) |
IanBenzMaxim | 74:23be10c32fa3 | 128 | { |
j3 | 2:02d228c25fd4 | 129 | // Device Reset |
j3 | 2:02d228c25fd4 | 130 | // S AD,0 [A] DRST [A] Sr AD,1 [A] [SS] A\ P |
j3 | 2:02d228c25fd4 | 131 | // [] indicates from slave |
j3 | 2:02d228c25fd4 | 132 | // SS status byte to read to verify state |
IanBenzMaxim | 74:23be10c32fa3 | 133 | |
IanBenzMaxim | 74:23be10c32fa3 | 134 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 135 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 136 | |
IanBenzMaxim | 74:23be10c32fa3 | 137 | result = sendCommand(CMD_DRST); |
IanBenzMaxim | 74:23be10c32fa3 | 138 | |
IanBenzMaxim | 74:23be10c32fa3 | 139 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 140 | { |
IanBenzMaxim | 74:23be10c32fa3 | 141 | result = readRegister(StatusReg, buf, true); |
IanBenzMaxim | 74:23be10c32fa3 | 142 | } |
IanBenzMaxim | 69:f915c4c59a69 | 143 | |
IanBenzMaxim | 74:23be10c32fa3 | 144 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 145 | { |
IanBenzMaxim | 74:23be10c32fa3 | 146 | if ((buf & 0xF7) != 0x10) |
IanBenzMaxim | 74:23be10c32fa3 | 147 | { |
IanBenzMaxim | 74:23be10c32fa3 | 148 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 149 | } |
IanBenzMaxim | 74:23be10c32fa3 | 150 | } |
IanBenzMaxim | 69:f915c4c59a69 | 151 | |
IanBenzMaxim | 74:23be10c32fa3 | 152 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 153 | { |
IanBenzMaxim | 74:23be10c32fa3 | 154 | OWReset(); // do a command to get 1-Wire master reset out of holding state |
IanBenzMaxim | 74:23be10c32fa3 | 155 | } |
IanBenzMaxim | 74:23be10c32fa3 | 156 | |
IanBenzMaxim | 74:23be10c32fa3 | 157 | return result; |
j3 | 2:02d228c25fd4 | 158 | } |
j3 | 2:02d228c25fd4 | 159 | |
IanBenzMaxim | 73:2cecc1372acc | 160 | OneWireMaster::CmdResult DS248x::selectChannel(uint8_t channel) |
j3 | 2:02d228c25fd4 | 161 | { |
j3 | 23:e8e403d61359 | 162 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 69:f915c4c59a69 | 163 | uint8_t ch, ch_read; |
IanBenzMaxim | 74:23be10c32fa3 | 164 | |
j3 | 2:02d228c25fd4 | 165 | // Channel Select (Case A) |
j3 | 2:02d228c25fd4 | 166 | // S AD,0 [A] CHSL [A] CC [A] Sr AD,1 [A] [RR] A\ P |
j3 | 2:02d228c25fd4 | 167 | // [] indicates from slave |
j3 | 2:02d228c25fd4 | 168 | // CC channel value |
j3 | 2:02d228c25fd4 | 169 | // RR channel read back |
IanBenzMaxim | 74:23be10c32fa3 | 170 | |
j3 | 2:02d228c25fd4 | 171 | switch (channel) |
j3 | 2:02d228c25fd4 | 172 | { |
IanBenzMaxim | 74:23be10c32fa3 | 173 | default: |
IanBenzMaxim | 74:23be10c32fa3 | 174 | case 0: |
IanBenzMaxim | 74:23be10c32fa3 | 175 | ch = 0xF0; |
IanBenzMaxim | 74:23be10c32fa3 | 176 | ch_read = 0xB8; |
IanBenzMaxim | 74:23be10c32fa3 | 177 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 178 | case 1: |
IanBenzMaxim | 74:23be10c32fa3 | 179 | ch = 0xE1; |
IanBenzMaxim | 74:23be10c32fa3 | 180 | ch_read = 0xB1; |
IanBenzMaxim | 74:23be10c32fa3 | 181 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 182 | case 2: |
IanBenzMaxim | 74:23be10c32fa3 | 183 | ch = 0xD2; |
IanBenzMaxim | 74:23be10c32fa3 | 184 | ch_read = 0xAA; |
IanBenzMaxim | 74:23be10c32fa3 | 185 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 186 | case 3: |
IanBenzMaxim | 74:23be10c32fa3 | 187 | ch = 0xC3; |
IanBenzMaxim | 74:23be10c32fa3 | 188 | ch_read = 0xA3; |
IanBenzMaxim | 74:23be10c32fa3 | 189 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 190 | case 4: |
IanBenzMaxim | 74:23be10c32fa3 | 191 | ch = 0xB4; |
IanBenzMaxim | 74:23be10c32fa3 | 192 | ch_read = 0x9C; |
IanBenzMaxim | 74:23be10c32fa3 | 193 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 194 | case 5: |
IanBenzMaxim | 74:23be10c32fa3 | 195 | ch = 0xA5; |
IanBenzMaxim | 74:23be10c32fa3 | 196 | ch_read = 0x95; |
IanBenzMaxim | 74:23be10c32fa3 | 197 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 198 | case 6: |
IanBenzMaxim | 74:23be10c32fa3 | 199 | ch = 0x96; |
IanBenzMaxim | 74:23be10c32fa3 | 200 | ch_read = 0x8E; |
IanBenzMaxim | 74:23be10c32fa3 | 201 | break; |
IanBenzMaxim | 74:23be10c32fa3 | 202 | case 7: |
IanBenzMaxim | 74:23be10c32fa3 | 203 | ch = 0x87; |
IanBenzMaxim | 74:23be10c32fa3 | 204 | ch_read = 0x87; |
IanBenzMaxim | 74:23be10c32fa3 | 205 | break; |
j3 | 2:02d228c25fd4 | 206 | }; |
IanBenzMaxim | 74:23be10c32fa3 | 207 | |
IanBenzMaxim | 69:f915c4c59a69 | 208 | result = sendCommand(CMD_CHSL, ch); |
IanBenzMaxim | 69:f915c4c59a69 | 209 | if (result == OneWireMaster::Success) |
j3 | 17:b646b1e3970b | 210 | { |
IanBenzMaxim | 73:2cecc1372acc | 211 | result = readRegister(ChannelSelectReg, ch, true); |
IanBenzMaxim | 69:f915c4c59a69 | 212 | if (result == OneWireMaster::Success) |
j3 | 17:b646b1e3970b | 213 | { |
j3 | 17:b646b1e3970b | 214 | // check for failure due to incorrect read back of channel |
IanBenzMaxim | 69:f915c4c59a69 | 215 | if (ch != ch_read) |
j3 | 17:b646b1e3970b | 216 | { |
j3 | 23:e8e403d61359 | 217 | result = OneWireMaster::OperationFailure; |
j3 | 17:b646b1e3970b | 218 | } |
j3 | 2:02d228c25fd4 | 219 | } |
j3 | 2:02d228c25fd4 | 220 | } |
IanBenzMaxim | 74:23be10c32fa3 | 221 | |
j3 | 17:b646b1e3970b | 222 | return result; |
j3 | 1:91e52f8ab8bf | 223 | } |
j3 | 1:91e52f8ab8bf | 224 | |
IanBenzMaxim | 73:2cecc1372acc | 225 | OneWireMaster::CmdResult DS248x::adjustOwPort(OwAdjustParam param, uint8_t val) |
j3 | 1:91e52f8ab8bf | 226 | { |
j3 | 23:e8e403d61359 | 227 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 228 | |
IanBenzMaxim | 69:f915c4c59a69 | 229 | uint8_t read_port_config; |
IanBenzMaxim | 69:f915c4c59a69 | 230 | uint8_t control_byte; |
IanBenzMaxim | 69:f915c4c59a69 | 231 | |
IanBenzMaxim | 69:f915c4c59a69 | 232 | control_byte = (((param & 0x0F) << 4) | (val & 0x0F)); |
IanBenzMaxim | 74:23be10c32fa3 | 233 | |
IanBenzMaxim | 69:f915c4c59a69 | 234 | result = sendCommand(CMD_A1WP, control_byte); |
IanBenzMaxim | 69:f915c4c59a69 | 235 | if (result != Success) |
IanBenzMaxim | 74:23be10c32fa3 | 236 | { |
IanBenzMaxim | 26:a361e3f42ba5 | 237 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 238 | } |
IanBenzMaxim | 74:23be10c32fa3 | 239 | |
IanBenzMaxim | 73:2cecc1372acc | 240 | result = readRegister(PortConfigReg, read_port_config, true); |
IanBenzMaxim | 69:f915c4c59a69 | 241 | if (result != Success) |
IanBenzMaxim | 74:23be10c32fa3 | 242 | { |
IanBenzMaxim | 69:f915c4c59a69 | 243 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 244 | } |
IanBenzMaxim | 74:23be10c32fa3 | 245 | |
IanBenzMaxim | 74:23be10c32fa3 | 246 | if ((control_byte & 0x0F) != read_port_config) |
IanBenzMaxim | 74:23be10c32fa3 | 247 | { |
IanBenzMaxim | 69:f915c4c59a69 | 248 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 249 | } |
IanBenzMaxim | 74:23be10c32fa3 | 250 | |
IanBenzMaxim | 69:f915c4c59a69 | 251 | return result; |
IanBenzMaxim | 69:f915c4c59a69 | 252 | } |
IanBenzMaxim | 69:f915c4c59a69 | 253 | |
IanBenzMaxim | 73:2cecc1372acc | 254 | OneWireMaster::CmdResult DS248x::OWTriplet(SearchDirection & search_direction, uint8_t & sbr, uint8_t & tsb) |
IanBenzMaxim | 69:f915c4c59a69 | 255 | { |
IanBenzMaxim | 69:f915c4c59a69 | 256 | // 1-Wire Triplet (Case B) |
IanBenzMaxim | 69:f915c4c59a69 | 257 | // S AD,0 [A] 1WT [A] SS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 69:f915c4c59a69 | 258 | // \--------/ |
IanBenzMaxim | 69:f915c4c59a69 | 259 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 69:f915c4c59a69 | 260 | // [] indicates from slave |
IanBenzMaxim | 69:f915c4c59a69 | 261 | // SS indicates byte containing search direction bit value in msbit |
IanBenzMaxim | 69:f915c4c59a69 | 262 | |
IanBenzMaxim | 74:23be10c32fa3 | 263 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 264 | result = sendCommand(CMD_1WT, (uint8_t)((search_direction == DIRECTION_WRITE_ONE) ? 0x80 : 0x00)); |
IanBenzMaxim | 69:f915c4c59a69 | 265 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 69:f915c4c59a69 | 266 | { |
IanBenzMaxim | 74:23be10c32fa3 | 267 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 268 | result = pollBusy(&status); |
IanBenzMaxim | 74:23be10c32fa3 | 269 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 270 | { |
IanBenzMaxim | 74:23be10c32fa3 | 271 | // check bit results in status byte |
IanBenzMaxim | 74:23be10c32fa3 | 272 | sbr = ((status & STATUS_SBR) == STATUS_SBR); |
IanBenzMaxim | 74:23be10c32fa3 | 273 | tsb = ((status & STATUS_TSB) == STATUS_TSB); |
IanBenzMaxim | 74:23be10c32fa3 | 274 | search_direction = ((status & STATUS_DIR) == STATUS_DIR) ? DIRECTION_WRITE_ONE : DIRECTION_WRITE_ZERO; |
IanBenzMaxim | 74:23be10c32fa3 | 275 | } |
IanBenzMaxim | 69:f915c4c59a69 | 276 | } |
IanBenzMaxim | 74:23be10c32fa3 | 277 | return result; |
IanBenzMaxim | 69:f915c4c59a69 | 278 | } |
IanBenzMaxim | 69:f915c4c59a69 | 279 | |
IanBenzMaxim | 73:2cecc1372acc | 280 | OneWireMaster::CmdResult DS248x::OWReset(void) |
IanBenzMaxim | 69:f915c4c59a69 | 281 | { |
IanBenzMaxim | 69:f915c4c59a69 | 282 | // 1-Wire reset (Case B) |
IanBenzMaxim | 69:f915c4c59a69 | 283 | // S AD,0 [A] 1WRS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 69:f915c4c59a69 | 284 | // \--------/ |
IanBenzMaxim | 69:f915c4c59a69 | 285 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 69:f915c4c59a69 | 286 | // [] indicates from slave |
IanBenzMaxim | 69:f915c4c59a69 | 287 | |
IanBenzMaxim | 74:23be10c32fa3 | 288 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 289 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 290 | |
IanBenzMaxim | 74:23be10c32fa3 | 291 | result = sendCommand(CMD_1WRS); |
IanBenzMaxim | 74:23be10c32fa3 | 292 | |
IanBenzMaxim | 74:23be10c32fa3 | 293 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 294 | { |
IanBenzMaxim | 74:23be10c32fa3 | 295 | result = pollBusy(&buf); |
IanBenzMaxim | 74:23be10c32fa3 | 296 | } |
IanBenzMaxim | 69:f915c4c59a69 | 297 | |
IanBenzMaxim | 74:23be10c32fa3 | 298 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 299 | { |
IanBenzMaxim | 74:23be10c32fa3 | 300 | // check for presence detect |
IanBenzMaxim | 74:23be10c32fa3 | 301 | if ((buf & STATUS_PPD) != STATUS_PPD) |
IanBenzMaxim | 74:23be10c32fa3 | 302 | { |
IanBenzMaxim | 74:23be10c32fa3 | 303 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 304 | } |
IanBenzMaxim | 74:23be10c32fa3 | 305 | } |
IanBenzMaxim | 69:f915c4c59a69 | 306 | |
IanBenzMaxim | 74:23be10c32fa3 | 307 | return result; |
IanBenzMaxim | 69:f915c4c59a69 | 308 | } |
IanBenzMaxim | 69:f915c4c59a69 | 309 | |
IanBenzMaxim | 73:2cecc1372acc | 310 | OneWireMaster::CmdResult DS248x::OWTouchBitSetLevel(uint8_t & sendrecvbit, OWLevel after_level) |
IanBenzMaxim | 69:f915c4c59a69 | 311 | { |
j3 | 2:02d228c25fd4 | 312 | // 1-Wire bit (Case B) |
j3 | 2:02d228c25fd4 | 313 | // S AD,0 [A] 1WSB [A] BB [A] Sr AD,1 [A] [Status] A [Status] A\ P |
j3 | 2:02d228c25fd4 | 314 | // \--------/ |
j3 | 2:02d228c25fd4 | 315 | // Repeat until 1WB bit has changed to 0 |
j3 | 2:02d228c25fd4 | 316 | // [] indicates from slave |
j3 | 2:02d228c25fd4 | 317 | // BB indicates byte containing bit value in msbit |
j3 | 2:02d228c25fd4 | 318 | |
IanBenzMaxim | 74:23be10c32fa3 | 319 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 320 | |
IanBenzMaxim | 74:23be10c32fa3 | 321 | result = configureLevel(after_level); |
IanBenzMaxim | 74:23be10c32fa3 | 322 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 323 | { |
IanBenzMaxim | 74:23be10c32fa3 | 324 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 325 | } |
IanBenzMaxim | 74:23be10c32fa3 | 326 | |
IanBenzMaxim | 74:23be10c32fa3 | 327 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 328 | |
IanBenzMaxim | 74:23be10c32fa3 | 329 | result = sendCommand(CMD_1WSB, (uint8_t)(sendrecvbit ? 0x80 : 0x00)); |
IanBenzMaxim | 74:23be10c32fa3 | 330 | |
IanBenzMaxim | 74:23be10c32fa3 | 331 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 332 | { |
IanBenzMaxim | 74:23be10c32fa3 | 333 | result = pollBusy(&status); |
IanBenzMaxim | 74:23be10c32fa3 | 334 | } |
IanBenzMaxim | 74:23be10c32fa3 | 335 | |
IanBenzMaxim | 74:23be10c32fa3 | 336 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 337 | { |
IanBenzMaxim | 74:23be10c32fa3 | 338 | sendrecvbit = (status & STATUS_SBR); |
IanBenzMaxim | 74:23be10c32fa3 | 339 | } |
IanBenzMaxim | 74:23be10c32fa3 | 340 | |
IanBenzMaxim | 69:f915c4c59a69 | 341 | return result; |
j3 | 1:91e52f8ab8bf | 342 | } |
j3 | 1:91e52f8ab8bf | 343 | |
IanBenzMaxim | 73:2cecc1372acc | 344 | OneWireMaster::CmdResult DS248x::OWWriteByteSetLevel(uint8_t sendbyte, OWLevel after_level) |
j3 | 1:91e52f8ab8bf | 345 | { |
j3 | 2:02d228c25fd4 | 346 | // 1-Wire Write Byte (Case B) |
j3 | 2:02d228c25fd4 | 347 | // S AD,0 [A] 1WWB [A] DD [A] Sr AD,1 [A] [Status] A [Status] A\ P |
j3 | 2:02d228c25fd4 | 348 | // \--------/ |
j3 | 2:02d228c25fd4 | 349 | // Repeat until 1WB bit has changed to 0 |
j3 | 2:02d228c25fd4 | 350 | // [] indicates from slave |
j3 | 2:02d228c25fd4 | 351 | // DD data to write |
j3 | 2:02d228c25fd4 | 352 | |
IanBenzMaxim | 74:23be10c32fa3 | 353 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 354 | |
IanBenzMaxim | 74:23be10c32fa3 | 355 | result = configureLevel(after_level); |
IanBenzMaxim | 74:23be10c32fa3 | 356 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 357 | { |
IanBenzMaxim | 74:23be10c32fa3 | 358 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 359 | } |
IanBenzMaxim | 74:23be10c32fa3 | 360 | |
IanBenzMaxim | 74:23be10c32fa3 | 361 | result = sendCommand(CMD_1WWB, sendbyte); |
IanBenzMaxim | 74:23be10c32fa3 | 362 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 363 | { |
IanBenzMaxim | 74:23be10c32fa3 | 364 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 365 | } |
IanBenzMaxim | 74:23be10c32fa3 | 366 | |
IanBenzMaxim | 69:f915c4c59a69 | 367 | return result; |
j3 | 1:91e52f8ab8bf | 368 | } |
j3 | 1:91e52f8ab8bf | 369 | |
IanBenzMaxim | 73:2cecc1372acc | 370 | OneWireMaster::CmdResult DS248x::OWReadByteSetLevel(uint8_t & recvbyte, OWLevel after_level) |
j3 | 1:91e52f8ab8bf | 371 | { |
IanBenzMaxim | 69:f915c4c59a69 | 372 | // 1-Wire Read Bytes (Case C) |
IanBenzMaxim | 69:f915c4c59a69 | 373 | // S AD,0 [A] 1WRB [A] Sr AD,1 [A] [Status] A [Status] A\ |
IanBenzMaxim | 69:f915c4c59a69 | 374 | // \--------/ |
IanBenzMaxim | 69:f915c4c59a69 | 375 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 69:f915c4c59a69 | 376 | // Sr AD,0 [A] SRP [A] E1 [A] Sr AD,1 [A] DD A\ P |
IanBenzMaxim | 69:f915c4c59a69 | 377 | // |
IanBenzMaxim | 69:f915c4c59a69 | 378 | // [] indicates from slave |
IanBenzMaxim | 69:f915c4c59a69 | 379 | // DD data read |
IanBenzMaxim | 26:a361e3f42ba5 | 380 | |
IanBenzMaxim | 74:23be10c32fa3 | 381 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 382 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 383 | |
IanBenzMaxim | 74:23be10c32fa3 | 384 | result = configureLevel(after_level); |
IanBenzMaxim | 74:23be10c32fa3 | 385 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 386 | { |
IanBenzMaxim | 74:23be10c32fa3 | 387 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 388 | } |
IanBenzMaxim | 74:23be10c32fa3 | 389 | |
IanBenzMaxim | 74:23be10c32fa3 | 390 | result = sendCommand(CMD_1WRB); |
IanBenzMaxim | 69:f915c4c59a69 | 391 | |
IanBenzMaxim | 74:23be10c32fa3 | 392 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 393 | { |
IanBenzMaxim | 74:23be10c32fa3 | 394 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 395 | } |
IanBenzMaxim | 69:f915c4c59a69 | 396 | |
IanBenzMaxim | 74:23be10c32fa3 | 397 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 398 | { |
IanBenzMaxim | 74:23be10c32fa3 | 399 | result = readRegister(ReadDataReg, buf); |
IanBenzMaxim | 74:23be10c32fa3 | 400 | } |
IanBenzMaxim | 74:23be10c32fa3 | 401 | |
IanBenzMaxim | 74:23be10c32fa3 | 402 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 403 | { |
IanBenzMaxim | 74:23be10c32fa3 | 404 | recvbyte = buf; |
IanBenzMaxim | 74:23be10c32fa3 | 405 | } |
IanBenzMaxim | 74:23be10c32fa3 | 406 | |
IanBenzMaxim | 74:23be10c32fa3 | 407 | return result; |
j3 | 17:b646b1e3970b | 408 | } |
j3 | 17:b646b1e3970b | 409 | |
IanBenzMaxim | 73:2cecc1372acc | 410 | OneWireMaster::CmdResult DS248x::OWSetSpeed(OWSpeed new_speed) |
j3 | 1:91e52f8ab8bf | 411 | { |
IanBenzMaxim | 74:23be10c32fa3 | 412 | // Requested speed is already set |
IanBenzMaxim | 74:23be10c32fa3 | 413 | if (m_curConfig.get1WS() == (new_speed == SPEED_OVERDRIVE)) |
IanBenzMaxim | 74:23be10c32fa3 | 414 | { |
IanBenzMaxim | 74:23be10c32fa3 | 415 | return OneWireMaster::Success; |
IanBenzMaxim | 74:23be10c32fa3 | 416 | } |
j3 | 2:02d228c25fd4 | 417 | |
IanBenzMaxim | 74:23be10c32fa3 | 418 | // set the speed |
IanBenzMaxim | 74:23be10c32fa3 | 419 | Config newConfig = m_curConfig; |
IanBenzMaxim | 74:23be10c32fa3 | 420 | newConfig.set1WS(new_speed == SPEED_OVERDRIVE); |
IanBenzMaxim | 74:23be10c32fa3 | 421 | |
IanBenzMaxim | 74:23be10c32fa3 | 422 | // write the new config |
IanBenzMaxim | 74:23be10c32fa3 | 423 | return writeConfig(newConfig, true); |
j3 | 1:91e52f8ab8bf | 424 | } |
j3 | 1:91e52f8ab8bf | 425 | |
IanBenzMaxim | 73:2cecc1372acc | 426 | OneWireMaster::CmdResult DS248x::OWSetLevel(OWLevel new_level) |
j3 | 1:91e52f8ab8bf | 427 | { |
IanBenzMaxim | 69:f915c4c59a69 | 428 | if (new_level == LEVEL_STRONG) |
IanBenzMaxim | 73:2cecc1372acc | 429 | { |
IanBenzMaxim | 69:f915c4c59a69 | 430 | return OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 431 | } |
IanBenzMaxim | 74:23be10c32fa3 | 432 | |
IanBenzMaxim | 69:f915c4c59a69 | 433 | return configureLevel(new_level); |
IanBenzMaxim | 21:00c94aeb533e | 434 | } |
IanBenzMaxim | 21:00c94aeb533e | 435 | |
IanBenzMaxim | 73:2cecc1372acc | 436 | OneWireMaster::CmdResult DS248x::writeConfig(const Config & config, bool verify) |
j3 | 6:1faafa0b3cd7 | 437 | { |
IanBenzMaxim | 74:23be10c32fa3 | 438 | uint8_t configBuf; |
IanBenzMaxim | 74:23be10c32fa3 | 439 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 440 | |
IanBenzMaxim | 74:23be10c32fa3 | 441 | configBuf = config.writeByte(); |
IanBenzMaxim | 74:23be10c32fa3 | 442 | result = sendCommand(CMD_WCFG, configBuf); |
IanBenzMaxim | 74:23be10c32fa3 | 443 | if (verify) |
IanBenzMaxim | 74:23be10c32fa3 | 444 | { |
IanBenzMaxim | 74:23be10c32fa3 | 445 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 446 | { |
IanBenzMaxim | 74:23be10c32fa3 | 447 | result = readRegister(ConfigReg, configBuf); |
IanBenzMaxim | 74:23be10c32fa3 | 448 | } |
IanBenzMaxim | 74:23be10c32fa3 | 449 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 450 | { |
IanBenzMaxim | 74:23be10c32fa3 | 451 | if (configBuf != config.readByte()) |
IanBenzMaxim | 74:23be10c32fa3 | 452 | { |
IanBenzMaxim | 74:23be10c32fa3 | 453 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 454 | } |
IanBenzMaxim | 74:23be10c32fa3 | 455 | } |
IanBenzMaxim | 74:23be10c32fa3 | 456 | } |
IanBenzMaxim | 74:23be10c32fa3 | 457 | |
IanBenzMaxim | 69:f915c4c59a69 | 458 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 69:f915c4c59a69 | 459 | { |
IanBenzMaxim | 74:23be10c32fa3 | 460 | m_curConfig = config; |
IanBenzMaxim | 69:f915c4c59a69 | 461 | } |
IanBenzMaxim | 69:f915c4c59a69 | 462 | |
IanBenzMaxim | 74:23be10c32fa3 | 463 | return result; |
IanBenzMaxim | 69:f915c4c59a69 | 464 | } |
IanBenzMaxim | 69:f915c4c59a69 | 465 | |
IanBenzMaxim | 73:2cecc1372acc | 466 | OneWireMaster::CmdResult DS248x::readRegister(Register reg, uint8_t & buf, bool skipSetPointer) const |
IanBenzMaxim | 69:f915c4c59a69 | 467 | { |
IanBenzMaxim | 69:f915c4c59a69 | 468 | CmdResult result; |
IanBenzMaxim | 69:f915c4c59a69 | 469 | result = sendCommand(CMD_SRP, reg); |
IanBenzMaxim | 69:f915c4c59a69 | 470 | if (result == Success) |
IanBenzMaxim | 69:f915c4c59a69 | 471 | { |
IanBenzMaxim | 73:2cecc1372acc | 472 | if (_p_i2c_bus->read(_adrs, reinterpret_cast<char *>(&buf), 1) != I2C_READ_OK) |
IanBenzMaxim | 73:2cecc1372acc | 473 | { |
IanBenzMaxim | 69:f915c4c59a69 | 474 | result = CommunicationReadError; |
IanBenzMaxim | 74:23be10c32fa3 | 475 | } |
IanBenzMaxim | 69:f915c4c59a69 | 476 | } |
IanBenzMaxim | 69:f915c4c59a69 | 477 | return result; |
IanBenzMaxim | 69:f915c4c59a69 | 478 | } |
IanBenzMaxim | 69:f915c4c59a69 | 479 | |
IanBenzMaxim | 73:2cecc1372acc | 480 | OneWireMaster::CmdResult DS248x::pollBusy(uint8_t * pStatus) |
IanBenzMaxim | 69:f915c4c59a69 | 481 | { |
IanBenzMaxim | 74:23be10c32fa3 | 482 | const unsigned int pollLimit = 200; |
IanBenzMaxim | 74:23be10c32fa3 | 483 | |
IanBenzMaxim | 74:23be10c32fa3 | 484 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 485 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 486 | unsigned int pollCount = 0; |
IanBenzMaxim | 69:f915c4c59a69 | 487 | |
IanBenzMaxim | 74:23be10c32fa3 | 488 | do |
IanBenzMaxim | 74:23be10c32fa3 | 489 | { |
IanBenzMaxim | 74:23be10c32fa3 | 490 | result = readRegister(StatusReg, status, true); |
IanBenzMaxim | 74:23be10c32fa3 | 491 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 492 | { |
IanBenzMaxim | 74:23be10c32fa3 | 493 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 494 | } |
IanBenzMaxim | 74:23be10c32fa3 | 495 | if (pStatus != NULL) |
IanBenzMaxim | 74:23be10c32fa3 | 496 | { |
IanBenzMaxim | 74:23be10c32fa3 | 497 | *pStatus = status; |
IanBenzMaxim | 74:23be10c32fa3 | 498 | } |
IanBenzMaxim | 74:23be10c32fa3 | 499 | if (pollCount++ >= pollLimit) |
IanBenzMaxim | 74:23be10c32fa3 | 500 | { |
IanBenzMaxim | 74:23be10c32fa3 | 501 | return OneWireMaster::TimeoutError; |
IanBenzMaxim | 74:23be10c32fa3 | 502 | } |
IanBenzMaxim | 74:23be10c32fa3 | 503 | } while (status & STATUS_1WB); |
IanBenzMaxim | 69:f915c4c59a69 | 504 | |
IanBenzMaxim | 74:23be10c32fa3 | 505 | return OneWireMaster::Success; |
IanBenzMaxim | 69:f915c4c59a69 | 506 | } |
IanBenzMaxim | 69:f915c4c59a69 | 507 | |
IanBenzMaxim | 73:2cecc1372acc | 508 | OneWireMaster::CmdResult DS248x::configureLevel(OWLevel level) |
IanBenzMaxim | 69:f915c4c59a69 | 509 | { |
IanBenzMaxim | 69:f915c4c59a69 | 510 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 71:562f5c702094 | 511 | if (m_curConfig.getSPU() != (level == LEVEL_STRONG)) |
IanBenzMaxim | 69:f915c4c59a69 | 512 | { |
IanBenzMaxim | 69:f915c4c59a69 | 513 | Config newConfig = m_curConfig; |
IanBenzMaxim | 71:562f5c702094 | 514 | newConfig.setSPU(level == LEVEL_STRONG); |
IanBenzMaxim | 69:f915c4c59a69 | 515 | result = writeConfig(newConfig, true); |
IanBenzMaxim | 69:f915c4c59a69 | 516 | } |
IanBenzMaxim | 69:f915c4c59a69 | 517 | else |
IanBenzMaxim | 69:f915c4c59a69 | 518 | { |
IanBenzMaxim | 69:f915c4c59a69 | 519 | result = OneWireMaster::Success; |
IanBenzMaxim | 69:f915c4c59a69 | 520 | } |
IanBenzMaxim | 69:f915c4c59a69 | 521 | return result; |
IanBenzMaxim | 69:f915c4c59a69 | 522 | } |
IanBenzMaxim | 69:f915c4c59a69 | 523 | |
IanBenzMaxim | 73:2cecc1372acc | 524 | OneWireMaster::CmdResult DS248x::sendCommand(DS248X_CMDS cmd) const |
IanBenzMaxim | 69:f915c4c59a69 | 525 | { |
IanBenzMaxim | 69:f915c4c59a69 | 526 | CmdResult result; |
IanBenzMaxim | 73:2cecc1372acc | 527 | if (_p_i2c_bus->write(_adrs, reinterpret_cast<const char *>(&cmd), 1) == I2C_WRITE_OK) |
IanBenzMaxim | 73:2cecc1372acc | 528 | { |
IanBenzMaxim | 69:f915c4c59a69 | 529 | result = Success; |
IanBenzMaxim | 74:23be10c32fa3 | 530 | } |
IanBenzMaxim | 69:f915c4c59a69 | 531 | else |
IanBenzMaxim | 73:2cecc1372acc | 532 | { |
IanBenzMaxim | 69:f915c4c59a69 | 533 | result = CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 534 | } |
IanBenzMaxim | 69:f915c4c59a69 | 535 | return result; |
IanBenzMaxim | 69:f915c4c59a69 | 536 | } |
IanBenzMaxim | 69:f915c4c59a69 | 537 | |
IanBenzMaxim | 73:2cecc1372acc | 538 | OneWireMaster::CmdResult DS248x::sendCommand(DS248X_CMDS cmd, uint8_t param) const |
IanBenzMaxim | 69:f915c4c59a69 | 539 | { |
IanBenzMaxim | 69:f915c4c59a69 | 540 | CmdResult result; |
IanBenzMaxim | 69:f915c4c59a69 | 541 | char buf[2] = { cmd, param }; |
IanBenzMaxim | 73:2cecc1372acc | 542 | if (_p_i2c_bus->write(_adrs, buf, 2) == I2C_WRITE_OK) |
IanBenzMaxim | 73:2cecc1372acc | 543 | { |
IanBenzMaxim | 69:f915c4c59a69 | 544 | result = Success; |
IanBenzMaxim | 74:23be10c32fa3 | 545 | } |
IanBenzMaxim | 69:f915c4c59a69 | 546 | else |
IanBenzMaxim | 73:2cecc1372acc | 547 | { |
IanBenzMaxim | 69:f915c4c59a69 | 548 | result = CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 549 | } |
IanBenzMaxim | 69:f915c4c59a69 | 550 | return result; |
IanBenzMaxim | 69:f915c4c59a69 | 551 | } |