Maxim Integrated
1-Wire® library for mbed. Complete 1-Wire library that supports our silicon masters along with a bit-bang master on the MAX32600MBED platform with one common interface for mbed. Slave support has also been included and more slaves will be added as time permits.
Dependents: MAXREFDES131_Qt_Demo MAX32630FTHR_iButton_uSD_Logger MAX32630FTHR_DS18B20_uSD_Logger MAXREFDES130_131_Demo ... more
Superseded by MaximInterface.
Masters/DS248x/DS248x.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:
- 78:0cbbac7f2016
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?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| 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 | 76:84e6c4994e29 | 36 | using OneWire::OneWireMaster; |
| IanBenzMaxim | 76:84e6c4994e29 | 37 | using OneWire::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 | 75:8b627804927c | 91 | :m_p_i2c_bus(&i2c_bus), m_adrs(adrs), m_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 | 75:8b627804927c | 97 | : m_p_i2c_bus(new mbed::I2C(sda, scl)), m_adrs(adrs), m_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 | 75:8b627804927c | 104 | if (m_i2c_owner) |
| j3 | 1:91e52f8ab8bf | 105 | { |
| IanBenzMaxim | 75:8b627804927c | 106 | delete m_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 | 75:8b627804927c | 137 | result = sendCommand(DeviceResetCmd); |
| 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 | 75:8b627804927c | 208 | result = sendCommand(ChannelSelectCmd, 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 | 75:8b627804927c | 234 | result = sendCommand(AdjustOwPortCmd, 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 | 75:8b627804927c | 254 | OneWireMaster::CmdResult DS248x::OWTriplet(SearchDirection & searchDirection, 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 | 75:8b627804927c | 264 | result = sendCommand(OwTripletCmd, (uint8_t)((searchDirection == WriteOne) ? 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 | 75:8b627804927c | 274 | searchDirection = ((status & STATUS_DIR) == STATUS_DIR) ? WriteOne : WriteZero; |
| IanBenzMaxim | 74:23be10c32fa3 | 275 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 276 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 277 | return result; |
| IanBenzMaxim | 69:f915c4c59a69 | 278 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 279 | |
| IanBenzMaxim | 75:8b627804927c | 280 | OneWireMaster::CmdResult DS248x::OWReset() |
| 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 | 75:8b627804927c | 291 | result = sendCommand(OwResetCmd); |
| 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 | 75:8b627804927c | 310 | OneWireMaster::CmdResult DS248x::OWTouchBitSetLevel(uint8_t & sendRecvBit, OWLevel afterLevel) |
| 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 | 75:8b627804927c | 321 | result = configureLevel(afterLevel); |
| 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 | 75:8b627804927c | 329 | result = sendCommand(OwSingleBitCmd, (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 | 75:8b627804927c | 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 | 75:8b627804927c | 344 | OneWireMaster::CmdResult DS248x::OWWriteByteSetLevel(uint8_t sendByte, OWLevel afterLevel) |
| 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 | 75:8b627804927c | 355 | result = configureLevel(afterLevel); |
| 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 | 75:8b627804927c | 361 | result = sendCommand(OwWriteByteCmd, 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 | 75:8b627804927c | 370 | OneWireMaster::CmdResult DS248x::OWReadByteSetLevel(uint8_t & recvByte, OWLevel afterLevel) |
| 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 | 75:8b627804927c | 384 | result = configureLevel(afterLevel); |
| 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 | 75:8b627804927c | 390 | result = sendCommand(OwReadByteCmd); |
| 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 | 75:8b627804927c | 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 | 75:8b627804927c | 410 | OneWireMaster::CmdResult DS248x::OWSetSpeed(OWSpeed newSpeed) |
| j3 | 1:91e52f8ab8bf | 411 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 412 | // Requested speed is already set |
| IanBenzMaxim | 75:8b627804927c | 413 | if (m_curConfig.get1WS() == (newSpeed == OverdriveSpeed)) |
| 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 | 75:8b627804927c | 420 | newConfig.set1WS(newSpeed == OverdriveSpeed); |
| 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 | 75:8b627804927c | 426 | OneWireMaster::CmdResult DS248x::OWSetLevel(OWLevel newLevel) |
| j3 | 1:91e52f8ab8bf | 427 | { |
| IanBenzMaxim | 75:8b627804927c | 428 | if (newLevel == StrongLevel) |
| IanBenzMaxim | 73:2cecc1372acc | 429 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 430 | return OneWireMaster::OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 431 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 432 | |
| IanBenzMaxim | 75:8b627804927c | 433 | return configureLevel(newLevel); |
| 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 | 75:8b627804927c | 442 | result = sendCommand(WriteDeviceConfigCmd, 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 | 75:8b627804927c | 469 | result = sendCommand(SetReadPointerCmd, reg); |
| IanBenzMaxim | 69:f915c4c59a69 | 470 | if (result == Success) |
| IanBenzMaxim | 69:f915c4c59a69 | 471 | { |
| IanBenzMaxim | 75:8b627804927c | 472 | if (m_p_i2c_bus->read(m_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 | 75:8b627804927c | 511 | if (m_curConfig.getSPU() != (level == StrongLevel)) |
| IanBenzMaxim | 69:f915c4c59a69 | 512 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 513 | Config newConfig = m_curConfig; |
| IanBenzMaxim | 75:8b627804927c | 514 | newConfig.setSPU(level == StrongLevel); |
| 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 | 75:8b627804927c | 524 | OneWireMaster::CmdResult DS248x::sendCommand(Command cmd) const |
| IanBenzMaxim | 69:f915c4c59a69 | 525 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 526 | CmdResult result; |
| IanBenzMaxim | 75:8b627804927c | 527 | if (m_p_i2c_bus->write(m_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 | 75:8b627804927c | 538 | OneWireMaster::CmdResult DS248x::sendCommand(Command 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 | 75:8b627804927c | 542 | if (m_p_i2c_bus->write(m_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 | } |