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Superseded by MaximInterface.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@78:0cbbac7f2016, 2016-05-16 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Mon May 16 15:18:09 2016 -0500
- Revision:
- 78:0cbbac7f2016
- Parent:
- 76:84e6c4994e29
- Child:
- 79:7f22823a5a2d
Code cleanup.
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 | 78:0cbbac7f2016 | 39 | /// DS248x Status Bits |
| IanBenzMaxim | 78:0cbbac7f2016 | 40 | enum StatusBit |
| IanBenzMaxim | 69:f915c4c59a69 | 41 | { |
| IanBenzMaxim | 78:0cbbac7f2016 | 42 | Status_1WB = 0x01, |
| IanBenzMaxim | 78:0cbbac7f2016 | 43 | Status_PPD = 0x02, |
| IanBenzMaxim | 78:0cbbac7f2016 | 44 | Status_SD = 0x04, |
| IanBenzMaxim | 78:0cbbac7f2016 | 45 | Status_LL = 0x08, |
| IanBenzMaxim | 78:0cbbac7f2016 | 46 | Status_RST = 0x10, |
| IanBenzMaxim | 78:0cbbac7f2016 | 47 | Status_SBR = 0x20, |
| IanBenzMaxim | 78:0cbbac7f2016 | 48 | Status_TSB = 0x40, |
| IanBenzMaxim | 78:0cbbac7f2016 | 49 | Status_DIR = 0x80 |
| IanBenzMaxim | 69:f915c4c59a69 | 50 | }; |
| IanBenzMaxim | 69:f915c4c59a69 | 51 | |
| IanBenzMaxim | 69:f915c4c59a69 | 52 | static const int I2C_WRITE_OK = 0; |
| IanBenzMaxim | 69:f915c4c59a69 | 53 | static const int I2C_READ_OK = 0; |
| IanBenzMaxim | 69:f915c4c59a69 | 54 | |
| IanBenzMaxim | 73:2cecc1372acc | 55 | uint8_t DS248x::Config::readByte() const |
| IanBenzMaxim | 69:f915c4c59a69 | 56 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 57 | uint8_t config = 0; |
| IanBenzMaxim | 74:23be10c32fa3 | 58 | if (get1WS()) |
| IanBenzMaxim | 74:23be10c32fa3 | 59 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 60 | config |= 0x08; |
| IanBenzMaxim | 74:23be10c32fa3 | 61 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 62 | if (getSPU()) |
| IanBenzMaxim | 74:23be10c32fa3 | 63 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 64 | config |= 0x04; |
| IanBenzMaxim | 74:23be10c32fa3 | 65 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 66 | if (getPDN()) |
| IanBenzMaxim | 74:23be10c32fa3 | 67 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 68 | config |= 0x02; |
| IanBenzMaxim | 74:23be10c32fa3 | 69 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 70 | if (getAPU()) |
| IanBenzMaxim | 74:23be10c32fa3 | 71 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 72 | config |= 0x01; |
| IanBenzMaxim | 74:23be10c32fa3 | 73 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 74 | return config; |
| IanBenzMaxim | 69:f915c4c59a69 | 75 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 76 | |
| IanBenzMaxim | 73:2cecc1372acc | 77 | uint8_t DS248x::Config::writeByte() const |
| IanBenzMaxim | 69:f915c4c59a69 | 78 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 79 | uint8_t config = readByte(); |
| IanBenzMaxim | 74:23be10c32fa3 | 80 | return ((~config << 4) | config); |
| IanBenzMaxim | 69:f915c4c59a69 | 81 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 82 | |
| IanBenzMaxim | 73:2cecc1372acc | 83 | void DS248x::Config::reset() |
| IanBenzMaxim | 69:f915c4c59a69 | 84 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 85 | set1WS(false); |
| IanBenzMaxim | 74:23be10c32fa3 | 86 | setSPU(false); |
| IanBenzMaxim | 74:23be10c32fa3 | 87 | setPDN(false); |
| IanBenzMaxim | 74:23be10c32fa3 | 88 | setAPU(true); |
| IanBenzMaxim | 69:f915c4c59a69 | 89 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 90 | |
| IanBenzMaxim | 73:2cecc1372acc | 91 | DS248x::DS248x(mbed::I2C & i2c_bus, uint8_t adrs) |
| IanBenzMaxim | 75:8b627804927c | 92 | :m_p_i2c_bus(&i2c_bus), m_adrs(adrs), m_i2c_owner(false) |
| IanBenzMaxim | 73:2cecc1372acc | 93 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 94 | |
| j3 | 1:91e52f8ab8bf | 95 | } |
| j3 | 1:91e52f8ab8bf | 96 | |
| IanBenzMaxim | 73:2cecc1372acc | 97 | DS248x::DS248x(PinName sda, PinName scl, uint8_t adrs) |
| IanBenzMaxim | 75:8b627804927c | 98 | : m_p_i2c_bus(new mbed::I2C(sda, scl)), m_adrs(adrs), m_i2c_owner(true) |
| IanBenzMaxim | 73:2cecc1372acc | 99 | { |
| j3 | 1:91e52f8ab8bf | 100 | |
| j3 | 1:91e52f8ab8bf | 101 | } |
| j3 | 1:91e52f8ab8bf | 102 | |
| IanBenzMaxim | 73:2cecc1372acc | 103 | DS248x::~DS248x() |
| j3 | 1:91e52f8ab8bf | 104 | { |
| IanBenzMaxim | 75:8b627804927c | 105 | if (m_i2c_owner) |
| j3 | 1:91e52f8ab8bf | 106 | { |
| IanBenzMaxim | 75:8b627804927c | 107 | delete m_p_i2c_bus; |
| j3 | 1:91e52f8ab8bf | 108 | } |
| j3 | 1:91e52f8ab8bf | 109 | } |
| j3 | 1:91e52f8ab8bf | 110 | |
| IanBenzMaxim | 73:2cecc1372acc | 111 | OneWireMaster::CmdResult DS248x::OWInitMaster(void) |
| j3 | 14:7b2886a50321 | 112 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 113 | OneWireMaster::CmdResult result; |
| j3 | 14:7b2886a50321 | 114 | |
| IanBenzMaxim | 69:f915c4c59a69 | 115 | // reset DS2465 |
| j3 | 17:b646b1e3970b | 116 | result = reset(); |
| IanBenzMaxim | 69:f915c4c59a69 | 117 | if (result != OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 118 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 119 | return result; |
| IanBenzMaxim | 74:23be10c32fa3 | 120 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 121 | |
| IanBenzMaxim | 69:f915c4c59a69 | 122 | // write the default configuration setup |
| IanBenzMaxim | 69:f915c4c59a69 | 123 | Config defaultConfig; |
| IanBenzMaxim | 69:f915c4c59a69 | 124 | result = writeConfig(defaultConfig, true); |
| j3 | 17:b646b1e3970b | 125 | return result; |
| j3 | 2:02d228c25fd4 | 126 | } |
| j3 | 2:02d228c25fd4 | 127 | |
| IanBenzMaxim | 73:2cecc1372acc | 128 | OneWireMaster::CmdResult DS248x::reset(void) |
| IanBenzMaxim | 74:23be10c32fa3 | 129 | { |
| j3 | 2:02d228c25fd4 | 130 | // Device Reset |
| j3 | 2:02d228c25fd4 | 131 | // S AD,0 [A] DRST [A] Sr AD,1 [A] [SS] A\ P |
| j3 | 2:02d228c25fd4 | 132 | // [] indicates from slave |
| j3 | 2:02d228c25fd4 | 133 | // SS status byte to read to verify state |
| IanBenzMaxim | 74:23be10c32fa3 | 134 | |
| IanBenzMaxim | 74:23be10c32fa3 | 135 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 74:23be10c32fa3 | 136 | uint8_t buf; |
| IanBenzMaxim | 74:23be10c32fa3 | 137 | |
| IanBenzMaxim | 75:8b627804927c | 138 | result = sendCommand(DeviceResetCmd); |
| IanBenzMaxim | 74:23be10c32fa3 | 139 | |
| IanBenzMaxim | 74:23be10c32fa3 | 140 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 141 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 142 | result = readRegister(StatusReg, buf, true); |
| IanBenzMaxim | 74:23be10c32fa3 | 143 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 144 | |
| IanBenzMaxim | 74:23be10c32fa3 | 145 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 146 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 147 | if ((buf & 0xF7) != 0x10) |
| IanBenzMaxim | 74:23be10c32fa3 | 148 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 149 | result = OneWireMaster::OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 150 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 151 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 152 | |
| IanBenzMaxim | 74:23be10c32fa3 | 153 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 154 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 155 | OWReset(); // do a command to get 1-Wire master reset out of holding state |
| IanBenzMaxim | 74:23be10c32fa3 | 156 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 157 | |
| IanBenzMaxim | 74:23be10c32fa3 | 158 | return result; |
| j3 | 2:02d228c25fd4 | 159 | } |
| j3 | 2:02d228c25fd4 | 160 | |
| IanBenzMaxim | 73:2cecc1372acc | 161 | OneWireMaster::CmdResult DS248x::selectChannel(uint8_t channel) |
| j3 | 2:02d228c25fd4 | 162 | { |
| j3 | 23:e8e403d61359 | 163 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 69:f915c4c59a69 | 164 | uint8_t ch, ch_read; |
| IanBenzMaxim | 74:23be10c32fa3 | 165 | |
| j3 | 2:02d228c25fd4 | 166 | // Channel Select (Case A) |
| j3 | 2:02d228c25fd4 | 167 | // S AD,0 [A] CHSL [A] CC [A] Sr AD,1 [A] [RR] A\ P |
| j3 | 2:02d228c25fd4 | 168 | // [] indicates from slave |
| j3 | 2:02d228c25fd4 | 169 | // CC channel value |
| j3 | 2:02d228c25fd4 | 170 | // RR channel read back |
| IanBenzMaxim | 74:23be10c32fa3 | 171 | |
| j3 | 2:02d228c25fd4 | 172 | switch (channel) |
| j3 | 2:02d228c25fd4 | 173 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 174 | default: |
| IanBenzMaxim | 74:23be10c32fa3 | 175 | case 0: |
| IanBenzMaxim | 74:23be10c32fa3 | 176 | ch = 0xF0; |
| IanBenzMaxim | 74:23be10c32fa3 | 177 | ch_read = 0xB8; |
| IanBenzMaxim | 74:23be10c32fa3 | 178 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 179 | case 1: |
| IanBenzMaxim | 74:23be10c32fa3 | 180 | ch = 0xE1; |
| IanBenzMaxim | 74:23be10c32fa3 | 181 | ch_read = 0xB1; |
| IanBenzMaxim | 74:23be10c32fa3 | 182 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 183 | case 2: |
| IanBenzMaxim | 74:23be10c32fa3 | 184 | ch = 0xD2; |
| IanBenzMaxim | 74:23be10c32fa3 | 185 | ch_read = 0xAA; |
| IanBenzMaxim | 74:23be10c32fa3 | 186 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 187 | case 3: |
| IanBenzMaxim | 74:23be10c32fa3 | 188 | ch = 0xC3; |
| IanBenzMaxim | 74:23be10c32fa3 | 189 | ch_read = 0xA3; |
| IanBenzMaxim | 74:23be10c32fa3 | 190 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 191 | case 4: |
| IanBenzMaxim | 74:23be10c32fa3 | 192 | ch = 0xB4; |
| IanBenzMaxim | 74:23be10c32fa3 | 193 | ch_read = 0x9C; |
| IanBenzMaxim | 74:23be10c32fa3 | 194 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 195 | case 5: |
| IanBenzMaxim | 74:23be10c32fa3 | 196 | ch = 0xA5; |
| IanBenzMaxim | 74:23be10c32fa3 | 197 | ch_read = 0x95; |
| IanBenzMaxim | 74:23be10c32fa3 | 198 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 199 | case 6: |
| IanBenzMaxim | 74:23be10c32fa3 | 200 | ch = 0x96; |
| IanBenzMaxim | 74:23be10c32fa3 | 201 | ch_read = 0x8E; |
| IanBenzMaxim | 74:23be10c32fa3 | 202 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 203 | case 7: |
| IanBenzMaxim | 74:23be10c32fa3 | 204 | ch = 0x87; |
| IanBenzMaxim | 74:23be10c32fa3 | 205 | ch_read = 0x87; |
| IanBenzMaxim | 74:23be10c32fa3 | 206 | break; |
| j3 | 2:02d228c25fd4 | 207 | }; |
| IanBenzMaxim | 74:23be10c32fa3 | 208 | |
| IanBenzMaxim | 75:8b627804927c | 209 | result = sendCommand(ChannelSelectCmd, ch); |
| IanBenzMaxim | 69:f915c4c59a69 | 210 | if (result == OneWireMaster::Success) |
| j3 | 17:b646b1e3970b | 211 | { |
| IanBenzMaxim | 73:2cecc1372acc | 212 | result = readRegister(ChannelSelectReg, ch, true); |
| IanBenzMaxim | 69:f915c4c59a69 | 213 | if (result == OneWireMaster::Success) |
| j3 | 17:b646b1e3970b | 214 | { |
| j3 | 17:b646b1e3970b | 215 | // check for failure due to incorrect read back of channel |
| IanBenzMaxim | 69:f915c4c59a69 | 216 | if (ch != ch_read) |
| j3 | 17:b646b1e3970b | 217 | { |
| j3 | 23:e8e403d61359 | 218 | result = OneWireMaster::OperationFailure; |
| j3 | 17:b646b1e3970b | 219 | } |
| j3 | 2:02d228c25fd4 | 220 | } |
| j3 | 2:02d228c25fd4 | 221 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 222 | |
| j3 | 17:b646b1e3970b | 223 | return result; |
| j3 | 1:91e52f8ab8bf | 224 | } |
| j3 | 1:91e52f8ab8bf | 225 | |
| IanBenzMaxim | 73:2cecc1372acc | 226 | OneWireMaster::CmdResult DS248x::adjustOwPort(OwAdjustParam param, uint8_t val) |
| j3 | 1:91e52f8ab8bf | 227 | { |
| j3 | 23:e8e403d61359 | 228 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 74:23be10c32fa3 | 229 | |
| IanBenzMaxim | 69:f915c4c59a69 | 230 | uint8_t read_port_config; |
| IanBenzMaxim | 69:f915c4c59a69 | 231 | uint8_t control_byte; |
| IanBenzMaxim | 69:f915c4c59a69 | 232 | |
| IanBenzMaxim | 69:f915c4c59a69 | 233 | control_byte = (((param & 0x0F) << 4) | (val & 0x0F)); |
| IanBenzMaxim | 74:23be10c32fa3 | 234 | |
| IanBenzMaxim | 75:8b627804927c | 235 | result = sendCommand(AdjustOwPortCmd, control_byte); |
| IanBenzMaxim | 69:f915c4c59a69 | 236 | if (result != Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 237 | { |
| IanBenzMaxim | 26:a361e3f42ba5 | 238 | return result; |
| IanBenzMaxim | 74:23be10c32fa3 | 239 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 240 | |
| IanBenzMaxim | 73:2cecc1372acc | 241 | result = readRegister(PortConfigReg, read_port_config, true); |
| IanBenzMaxim | 69:f915c4c59a69 | 242 | if (result != Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 243 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 244 | return result; |
| IanBenzMaxim | 74:23be10c32fa3 | 245 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 246 | |
| IanBenzMaxim | 74:23be10c32fa3 | 247 | if ((control_byte & 0x0F) != read_port_config) |
| IanBenzMaxim | 74:23be10c32fa3 | 248 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 249 | result = OneWireMaster::OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 250 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 251 | |
| IanBenzMaxim | 69:f915c4c59a69 | 252 | return result; |
| IanBenzMaxim | 69:f915c4c59a69 | 253 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 254 | |
| IanBenzMaxim | 75:8b627804927c | 255 | OneWireMaster::CmdResult DS248x::OWTriplet(SearchDirection & searchDirection, uint8_t & sbr, uint8_t & tsb) |
| IanBenzMaxim | 69:f915c4c59a69 | 256 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 257 | // 1-Wire Triplet (Case B) |
| IanBenzMaxim | 69:f915c4c59a69 | 258 | // S AD,0 [A] 1WT [A] SS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
| IanBenzMaxim | 69:f915c4c59a69 | 259 | // \--------/ |
| IanBenzMaxim | 69:f915c4c59a69 | 260 | // Repeat until 1WB bit has changed to 0 |
| IanBenzMaxim | 69:f915c4c59a69 | 261 | // [] indicates from slave |
| IanBenzMaxim | 69:f915c4c59a69 | 262 | // SS indicates byte containing search direction bit value in msbit |
| IanBenzMaxim | 69:f915c4c59a69 | 263 | |
| IanBenzMaxim | 74:23be10c32fa3 | 264 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 75:8b627804927c | 265 | result = sendCommand(OwTripletCmd, (uint8_t)((searchDirection == WriteOne) ? 0x80 : 0x00)); |
| IanBenzMaxim | 69:f915c4c59a69 | 266 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 69:f915c4c59a69 | 267 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 268 | uint8_t status; |
| IanBenzMaxim | 74:23be10c32fa3 | 269 | result = pollBusy(&status); |
| IanBenzMaxim | 74:23be10c32fa3 | 270 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 271 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 272 | // check bit results in status byte |
| IanBenzMaxim | 78:0cbbac7f2016 | 273 | sbr = ((status & Status_SBR) == Status_SBR); |
| IanBenzMaxim | 78:0cbbac7f2016 | 274 | tsb = ((status & Status_TSB) == Status_TSB); |
| IanBenzMaxim | 78:0cbbac7f2016 | 275 | searchDirection = ((status & Status_DIR) == Status_DIR) ? WriteOne : WriteZero; |
| IanBenzMaxim | 74:23be10c32fa3 | 276 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 277 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 278 | return result; |
| IanBenzMaxim | 69:f915c4c59a69 | 279 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 280 | |
| IanBenzMaxim | 75:8b627804927c | 281 | OneWireMaster::CmdResult DS248x::OWReset() |
| IanBenzMaxim | 69:f915c4c59a69 | 282 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 283 | // 1-Wire reset (Case B) |
| IanBenzMaxim | 69:f915c4c59a69 | 284 | // S AD,0 [A] 1WRS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
| IanBenzMaxim | 69:f915c4c59a69 | 285 | // \--------/ |
| IanBenzMaxim | 69:f915c4c59a69 | 286 | // Repeat until 1WB bit has changed to 0 |
| IanBenzMaxim | 69:f915c4c59a69 | 287 | // [] indicates from slave |
| IanBenzMaxim | 69:f915c4c59a69 | 288 | |
| IanBenzMaxim | 74:23be10c32fa3 | 289 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 74:23be10c32fa3 | 290 | uint8_t buf; |
| IanBenzMaxim | 74:23be10c32fa3 | 291 | |
| IanBenzMaxim | 75:8b627804927c | 292 | result = sendCommand(OwResetCmd); |
| IanBenzMaxim | 74:23be10c32fa3 | 293 | |
| IanBenzMaxim | 74:23be10c32fa3 | 294 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 295 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 296 | result = pollBusy(&buf); |
| IanBenzMaxim | 74:23be10c32fa3 | 297 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 298 | |
| IanBenzMaxim | 74:23be10c32fa3 | 299 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 300 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 301 | // check for presence detect |
| IanBenzMaxim | 78:0cbbac7f2016 | 302 | if ((buf & Status_PPD) != Status_PPD) |
| IanBenzMaxim | 74:23be10c32fa3 | 303 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 304 | result = OneWireMaster::OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 305 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 306 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 307 | |
| IanBenzMaxim | 74:23be10c32fa3 | 308 | return result; |
| IanBenzMaxim | 69:f915c4c59a69 | 309 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 310 | |
| IanBenzMaxim | 75:8b627804927c | 311 | OneWireMaster::CmdResult DS248x::OWTouchBitSetLevel(uint8_t & sendRecvBit, OWLevel afterLevel) |
| IanBenzMaxim | 69:f915c4c59a69 | 312 | { |
| j3 | 2:02d228c25fd4 | 313 | // 1-Wire bit (Case B) |
| j3 | 2:02d228c25fd4 | 314 | // S AD,0 [A] 1WSB [A] BB [A] Sr AD,1 [A] [Status] A [Status] A\ P |
| j3 | 2:02d228c25fd4 | 315 | // \--------/ |
| j3 | 2:02d228c25fd4 | 316 | // Repeat until 1WB bit has changed to 0 |
| j3 | 2:02d228c25fd4 | 317 | // [] indicates from slave |
| j3 | 2:02d228c25fd4 | 318 | // BB indicates byte containing bit value in msbit |
| j3 | 2:02d228c25fd4 | 319 | |
| IanBenzMaxim | 74:23be10c32fa3 | 320 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 74:23be10c32fa3 | 321 | |
| IanBenzMaxim | 75:8b627804927c | 322 | result = configureLevel(afterLevel); |
| IanBenzMaxim | 74:23be10c32fa3 | 323 | if (result != OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 324 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 325 | return result; |
| IanBenzMaxim | 74:23be10c32fa3 | 326 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 327 | |
| IanBenzMaxim | 74:23be10c32fa3 | 328 | uint8_t status; |
| IanBenzMaxim | 74:23be10c32fa3 | 329 | |
| IanBenzMaxim | 75:8b627804927c | 330 | result = sendCommand(OwSingleBitCmd, (uint8_t)(sendRecvBit ? 0x80 : 0x00)); |
| IanBenzMaxim | 74:23be10c32fa3 | 331 | |
| IanBenzMaxim | 74:23be10c32fa3 | 332 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 333 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 334 | result = pollBusy(&status); |
| IanBenzMaxim | 74:23be10c32fa3 | 335 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 336 | |
| IanBenzMaxim | 74:23be10c32fa3 | 337 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 338 | { |
| IanBenzMaxim | 78:0cbbac7f2016 | 339 | sendRecvBit = (status & Status_SBR); |
| IanBenzMaxim | 74:23be10c32fa3 | 340 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 341 | |
| IanBenzMaxim | 69:f915c4c59a69 | 342 | return result; |
| j3 | 1:91e52f8ab8bf | 343 | } |
| j3 | 1:91e52f8ab8bf | 344 | |
| IanBenzMaxim | 75:8b627804927c | 345 | OneWireMaster::CmdResult DS248x::OWWriteByteSetLevel(uint8_t sendByte, OWLevel afterLevel) |
| j3 | 1:91e52f8ab8bf | 346 | { |
| j3 | 2:02d228c25fd4 | 347 | // 1-Wire Write Byte (Case B) |
| j3 | 2:02d228c25fd4 | 348 | // S AD,0 [A] 1WWB [A] DD [A] Sr AD,1 [A] [Status] A [Status] A\ P |
| j3 | 2:02d228c25fd4 | 349 | // \--------/ |
| j3 | 2:02d228c25fd4 | 350 | // Repeat until 1WB bit has changed to 0 |
| j3 | 2:02d228c25fd4 | 351 | // [] indicates from slave |
| j3 | 2:02d228c25fd4 | 352 | // DD data to write |
| j3 | 2:02d228c25fd4 | 353 | |
| IanBenzMaxim | 74:23be10c32fa3 | 354 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 74:23be10c32fa3 | 355 | |
| IanBenzMaxim | 75:8b627804927c | 356 | result = configureLevel(afterLevel); |
| IanBenzMaxim | 74:23be10c32fa3 | 357 | if (result != OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 358 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 359 | return result; |
| IanBenzMaxim | 74:23be10c32fa3 | 360 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 361 | |
| IanBenzMaxim | 75:8b627804927c | 362 | result = sendCommand(OwWriteByteCmd, sendByte); |
| IanBenzMaxim | 74:23be10c32fa3 | 363 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 364 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 365 | result = pollBusy(); |
| IanBenzMaxim | 74:23be10c32fa3 | 366 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 367 | |
| IanBenzMaxim | 69:f915c4c59a69 | 368 | return result; |
| j3 | 1:91e52f8ab8bf | 369 | } |
| j3 | 1:91e52f8ab8bf | 370 | |
| IanBenzMaxim | 75:8b627804927c | 371 | OneWireMaster::CmdResult DS248x::OWReadByteSetLevel(uint8_t & recvByte, OWLevel afterLevel) |
| j3 | 1:91e52f8ab8bf | 372 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 373 | // 1-Wire Read Bytes (Case C) |
| IanBenzMaxim | 69:f915c4c59a69 | 374 | // S AD,0 [A] 1WRB [A] Sr AD,1 [A] [Status] A [Status] A\ |
| IanBenzMaxim | 69:f915c4c59a69 | 375 | // \--------/ |
| IanBenzMaxim | 69:f915c4c59a69 | 376 | // Repeat until 1WB bit has changed to 0 |
| IanBenzMaxim | 69:f915c4c59a69 | 377 | // Sr AD,0 [A] SRP [A] E1 [A] Sr AD,1 [A] DD A\ P |
| IanBenzMaxim | 69:f915c4c59a69 | 378 | // |
| IanBenzMaxim | 69:f915c4c59a69 | 379 | // [] indicates from slave |
| IanBenzMaxim | 69:f915c4c59a69 | 380 | // DD data read |
| IanBenzMaxim | 26:a361e3f42ba5 | 381 | |
| IanBenzMaxim | 74:23be10c32fa3 | 382 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 74:23be10c32fa3 | 383 | uint8_t buf; |
| IanBenzMaxim | 74:23be10c32fa3 | 384 | |
| IanBenzMaxim | 75:8b627804927c | 385 | result = configureLevel(afterLevel); |
| IanBenzMaxim | 74:23be10c32fa3 | 386 | if (result != OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 387 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 388 | return result; |
| IanBenzMaxim | 74:23be10c32fa3 | 389 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 390 | |
| IanBenzMaxim | 75:8b627804927c | 391 | result = sendCommand(OwReadByteCmd); |
| IanBenzMaxim | 69:f915c4c59a69 | 392 | |
| IanBenzMaxim | 74:23be10c32fa3 | 393 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 394 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 395 | result = pollBusy(); |
| IanBenzMaxim | 74:23be10c32fa3 | 396 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 397 | |
| IanBenzMaxim | 74:23be10c32fa3 | 398 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 399 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 400 | result = readRegister(ReadDataReg, buf); |
| IanBenzMaxim | 74:23be10c32fa3 | 401 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 402 | |
| IanBenzMaxim | 74:23be10c32fa3 | 403 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 404 | { |
| IanBenzMaxim | 75:8b627804927c | 405 | recvByte = buf; |
| IanBenzMaxim | 74:23be10c32fa3 | 406 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 407 | |
| IanBenzMaxim | 74:23be10c32fa3 | 408 | return result; |
| j3 | 17:b646b1e3970b | 409 | } |
| j3 | 17:b646b1e3970b | 410 | |
| IanBenzMaxim | 75:8b627804927c | 411 | OneWireMaster::CmdResult DS248x::OWSetSpeed(OWSpeed newSpeed) |
| j3 | 1:91e52f8ab8bf | 412 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 413 | // Requested speed is already set |
| IanBenzMaxim | 75:8b627804927c | 414 | if (m_curConfig.get1WS() == (newSpeed == OverdriveSpeed)) |
| IanBenzMaxim | 74:23be10c32fa3 | 415 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 416 | return OneWireMaster::Success; |
| IanBenzMaxim | 74:23be10c32fa3 | 417 | } |
| j3 | 2:02d228c25fd4 | 418 | |
| IanBenzMaxim | 74:23be10c32fa3 | 419 | // set the speed |
| IanBenzMaxim | 74:23be10c32fa3 | 420 | Config newConfig = m_curConfig; |
| IanBenzMaxim | 75:8b627804927c | 421 | newConfig.set1WS(newSpeed == OverdriveSpeed); |
| IanBenzMaxim | 74:23be10c32fa3 | 422 | |
| IanBenzMaxim | 74:23be10c32fa3 | 423 | // write the new config |
| IanBenzMaxim | 74:23be10c32fa3 | 424 | return writeConfig(newConfig, true); |
| j3 | 1:91e52f8ab8bf | 425 | } |
| j3 | 1:91e52f8ab8bf | 426 | |
| IanBenzMaxim | 75:8b627804927c | 427 | OneWireMaster::CmdResult DS248x::OWSetLevel(OWLevel newLevel) |
| j3 | 1:91e52f8ab8bf | 428 | { |
| IanBenzMaxim | 75:8b627804927c | 429 | if (newLevel == StrongLevel) |
| IanBenzMaxim | 73:2cecc1372acc | 430 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 431 | return OneWireMaster::OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 432 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 433 | |
| IanBenzMaxim | 75:8b627804927c | 434 | return configureLevel(newLevel); |
| IanBenzMaxim | 21:00c94aeb533e | 435 | } |
| IanBenzMaxim | 21:00c94aeb533e | 436 | |
| IanBenzMaxim | 73:2cecc1372acc | 437 | OneWireMaster::CmdResult DS248x::writeConfig(const Config & config, bool verify) |
| j3 | 6:1faafa0b3cd7 | 438 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 439 | uint8_t configBuf; |
| IanBenzMaxim | 74:23be10c32fa3 | 440 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 74:23be10c32fa3 | 441 | |
| IanBenzMaxim | 74:23be10c32fa3 | 442 | configBuf = config.writeByte(); |
| IanBenzMaxim | 75:8b627804927c | 443 | result = sendCommand(WriteDeviceConfigCmd, configBuf); |
| IanBenzMaxim | 74:23be10c32fa3 | 444 | if (verify) |
| IanBenzMaxim | 74:23be10c32fa3 | 445 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 446 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 447 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 448 | result = readRegister(ConfigReg, configBuf); |
| IanBenzMaxim | 74:23be10c32fa3 | 449 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 450 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 451 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 452 | if (configBuf != config.readByte()) |
| IanBenzMaxim | 74:23be10c32fa3 | 453 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 454 | result = OneWireMaster::OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 455 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 456 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 457 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 458 | |
| IanBenzMaxim | 69:f915c4c59a69 | 459 | if (result == OneWireMaster::Success) |
| IanBenzMaxim | 69:f915c4c59a69 | 460 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 461 | m_curConfig = config; |
| IanBenzMaxim | 69:f915c4c59a69 | 462 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 463 | |
| IanBenzMaxim | 74:23be10c32fa3 | 464 | return result; |
| IanBenzMaxim | 69:f915c4c59a69 | 465 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 466 | |
| IanBenzMaxim | 73:2cecc1372acc | 467 | OneWireMaster::CmdResult DS248x::readRegister(Register reg, uint8_t & buf, bool skipSetPointer) const |
| IanBenzMaxim | 69:f915c4c59a69 | 468 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 469 | CmdResult result; |
| IanBenzMaxim | 75:8b627804927c | 470 | result = sendCommand(SetReadPointerCmd, reg); |
| IanBenzMaxim | 69:f915c4c59a69 | 471 | if (result == Success) |
| IanBenzMaxim | 69:f915c4c59a69 | 472 | { |
| IanBenzMaxim | 75:8b627804927c | 473 | if (m_p_i2c_bus->read(m_adrs, reinterpret_cast<char *>(&buf), 1) != I2C_READ_OK) |
| IanBenzMaxim | 73:2cecc1372acc | 474 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 475 | result = CommunicationReadError; |
| IanBenzMaxim | 74:23be10c32fa3 | 476 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 477 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 478 | return result; |
| IanBenzMaxim | 69:f915c4c59a69 | 479 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 480 | |
| IanBenzMaxim | 73:2cecc1372acc | 481 | OneWireMaster::CmdResult DS248x::pollBusy(uint8_t * pStatus) |
| IanBenzMaxim | 69:f915c4c59a69 | 482 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 483 | const unsigned int pollLimit = 200; |
| IanBenzMaxim | 74:23be10c32fa3 | 484 | |
| IanBenzMaxim | 74:23be10c32fa3 | 485 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 74:23be10c32fa3 | 486 | uint8_t status; |
| IanBenzMaxim | 74:23be10c32fa3 | 487 | unsigned int pollCount = 0; |
| IanBenzMaxim | 69:f915c4c59a69 | 488 | |
| IanBenzMaxim | 74:23be10c32fa3 | 489 | do |
| IanBenzMaxim | 74:23be10c32fa3 | 490 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 491 | result = readRegister(StatusReg, status, true); |
| IanBenzMaxim | 74:23be10c32fa3 | 492 | if (result != OneWireMaster::Success) |
| IanBenzMaxim | 74:23be10c32fa3 | 493 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 494 | return result; |
| IanBenzMaxim | 74:23be10c32fa3 | 495 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 496 | if (pStatus != NULL) |
| IanBenzMaxim | 74:23be10c32fa3 | 497 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 498 | *pStatus = status; |
| IanBenzMaxim | 74:23be10c32fa3 | 499 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 500 | if (pollCount++ >= pollLimit) |
| IanBenzMaxim | 74:23be10c32fa3 | 501 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 502 | return OneWireMaster::TimeoutError; |
| IanBenzMaxim | 74:23be10c32fa3 | 503 | } |
| IanBenzMaxim | 78:0cbbac7f2016 | 504 | } while (status & Status_1WB); |
| IanBenzMaxim | 69:f915c4c59a69 | 505 | |
| IanBenzMaxim | 74:23be10c32fa3 | 506 | return OneWireMaster::Success; |
| IanBenzMaxim | 69:f915c4c59a69 | 507 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 508 | |
| IanBenzMaxim | 73:2cecc1372acc | 509 | OneWireMaster::CmdResult DS248x::configureLevel(OWLevel level) |
| IanBenzMaxim | 69:f915c4c59a69 | 510 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 511 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 75:8b627804927c | 512 | if (m_curConfig.getSPU() != (level == StrongLevel)) |
| IanBenzMaxim | 69:f915c4c59a69 | 513 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 514 | Config newConfig = m_curConfig; |
| IanBenzMaxim | 75:8b627804927c | 515 | newConfig.setSPU(level == StrongLevel); |
| IanBenzMaxim | 69:f915c4c59a69 | 516 | result = writeConfig(newConfig, true); |
| IanBenzMaxim | 69:f915c4c59a69 | 517 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 518 | else |
| IanBenzMaxim | 69:f915c4c59a69 | 519 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 520 | result = OneWireMaster::Success; |
| IanBenzMaxim | 69:f915c4c59a69 | 521 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 522 | return result; |
| IanBenzMaxim | 69:f915c4c59a69 | 523 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 524 | |
| IanBenzMaxim | 75:8b627804927c | 525 | OneWireMaster::CmdResult DS248x::sendCommand(Command cmd) const |
| IanBenzMaxim | 69:f915c4c59a69 | 526 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 527 | CmdResult result; |
| IanBenzMaxim | 75:8b627804927c | 528 | if (m_p_i2c_bus->write(m_adrs, reinterpret_cast<const char *>(&cmd), 1) == I2C_WRITE_OK) |
| IanBenzMaxim | 73:2cecc1372acc | 529 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 530 | result = Success; |
| IanBenzMaxim | 74:23be10c32fa3 | 531 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 532 | else |
| IanBenzMaxim | 73:2cecc1372acc | 533 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 534 | result = CommunicationWriteError; |
| IanBenzMaxim | 74:23be10c32fa3 | 535 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 536 | return result; |
| IanBenzMaxim | 69:f915c4c59a69 | 537 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 538 | |
| IanBenzMaxim | 75:8b627804927c | 539 | OneWireMaster::CmdResult DS248x::sendCommand(Command cmd, uint8_t param) const |
| IanBenzMaxim | 69:f915c4c59a69 | 540 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 541 | CmdResult result; |
| IanBenzMaxim | 69:f915c4c59a69 | 542 | char buf[2] = { cmd, param }; |
| IanBenzMaxim | 75:8b627804927c | 543 | if (m_p_i2c_bus->write(m_adrs, buf, 2) == I2C_WRITE_OK) |
| IanBenzMaxim | 73:2cecc1372acc | 544 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 545 | result = Success; |
| IanBenzMaxim | 74:23be10c32fa3 | 546 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 547 | else |
| IanBenzMaxim | 73:2cecc1372acc | 548 | { |
| IanBenzMaxim | 69:f915c4c59a69 | 549 | result = CommunicationWriteError; |
| IanBenzMaxim | 74:23be10c32fa3 | 550 | } |
| IanBenzMaxim | 69:f915c4c59a69 | 551 | return result; |
| IanBenzMaxim | 69:f915c4c59a69 | 552 | } |