Maxim Integrated
Device interface library for multiple platforms including Mbed.
Dependents: DeepCover Embedded Security in IoT MaximInterface MAXREFDES155#
Maxim Interface is a library framework focused on providing flexible and expressive hardware interfaces. Both communication interfaces such as I2C and 1-Wire and device interfaces such as DS18B20 are supported. Modern C++ concepts are used extensively while keeping compatibility with C++98/C++03 and requiring no external dependencies. The embedded-friendly design does not depend on exceptions or RTTI.
The full version of the project is hosted on GitLab: https://gitlab.com/iabenz/MaximInterface
MaximInterfaceDevices/DS2480B.cpp@7:9cd16581b578, 2019-07-22 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Mon Jul 22 11:44:07 2019 -0500
- Revision:
- 7:9cd16581b578
- Child:
- 8:5ea891c7d1a1
Updated to version 1.9.
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| IanBenzMaxim | 7:9cd16581b578 | 1 | /******************************************************************************* |
| IanBenzMaxim | 7:9cd16581b578 | 2 | * Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved. |
| IanBenzMaxim | 7:9cd16581b578 | 3 | * |
| IanBenzMaxim | 7:9cd16581b578 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| IanBenzMaxim | 7:9cd16581b578 | 5 | * copy of this software and associated documentation files (the "Software"), |
| IanBenzMaxim | 7:9cd16581b578 | 6 | * to deal in the Software without restriction, including without limitation |
| IanBenzMaxim | 7:9cd16581b578 | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| IanBenzMaxim | 7:9cd16581b578 | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| IanBenzMaxim | 7:9cd16581b578 | 9 | * Software is furnished to do so, subject to the following conditions: |
| IanBenzMaxim | 7:9cd16581b578 | 10 | * |
| IanBenzMaxim | 7:9cd16581b578 | 11 | * The above copyright notice and this permission notice shall be included |
| IanBenzMaxim | 7:9cd16581b578 | 12 | * in all copies or substantial portions of the Software. |
| IanBenzMaxim | 7:9cd16581b578 | 13 | * |
| IanBenzMaxim | 7:9cd16581b578 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| IanBenzMaxim | 7:9cd16581b578 | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| IanBenzMaxim | 7:9cd16581b578 | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| IanBenzMaxim | 7:9cd16581b578 | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
| IanBenzMaxim | 7:9cd16581b578 | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| IanBenzMaxim | 7:9cd16581b578 | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| IanBenzMaxim | 7:9cd16581b578 | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
| IanBenzMaxim | 7:9cd16581b578 | 21 | * |
| IanBenzMaxim | 7:9cd16581b578 | 22 | * Except as contained in this notice, the name of Maxim Integrated |
| IanBenzMaxim | 7:9cd16581b578 | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
| IanBenzMaxim | 7:9cd16581b578 | 24 | * Products, Inc. Branding Policy. |
| IanBenzMaxim | 7:9cd16581b578 | 25 | * |
| IanBenzMaxim | 7:9cd16581b578 | 26 | * The mere transfer of this software does not imply any licenses |
| IanBenzMaxim | 7:9cd16581b578 | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
| IanBenzMaxim | 7:9cd16581b578 | 28 | * trademarks, maskwork rights, or any other form of intellectual |
| IanBenzMaxim | 7:9cd16581b578 | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
| IanBenzMaxim | 7:9cd16581b578 | 30 | * ownership rights. |
| IanBenzMaxim | 7:9cd16581b578 | 31 | *******************************************************************************/ |
| IanBenzMaxim | 7:9cd16581b578 | 32 | |
| IanBenzMaxim | 7:9cd16581b578 | 33 | #include <MaximInterfaceCore/Error.hpp> |
| IanBenzMaxim | 7:9cd16581b578 | 34 | #include "DS2480B.hpp" |
| IanBenzMaxim | 7:9cd16581b578 | 35 | |
| IanBenzMaxim | 7:9cd16581b578 | 36 | // Mode Commands |
| IanBenzMaxim | 7:9cd16581b578 | 37 | #define MODE_DATA 0xE1 |
| IanBenzMaxim | 7:9cd16581b578 | 38 | #define MODE_COMMAND 0xE3 |
| IanBenzMaxim | 7:9cd16581b578 | 39 | #define MODE_STOP_PULSE 0xF1 |
| IanBenzMaxim | 7:9cd16581b578 | 40 | |
| IanBenzMaxim | 7:9cd16581b578 | 41 | // Return byte value |
| IanBenzMaxim | 7:9cd16581b578 | 42 | #define RB_CHIPID_MASK 0x1C |
| IanBenzMaxim | 7:9cd16581b578 | 43 | #define RB_RESET_MASK 0x03 |
| IanBenzMaxim | 7:9cd16581b578 | 44 | #define RB_1WIRESHORT 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 45 | #define RB_PRESENCE 0x01 |
| IanBenzMaxim | 7:9cd16581b578 | 46 | #define RB_ALARMPRESENCE 0x02 |
| IanBenzMaxim | 7:9cd16581b578 | 47 | #define RB_NOPRESENCE 0x03 |
| IanBenzMaxim | 7:9cd16581b578 | 48 | |
| IanBenzMaxim | 7:9cd16581b578 | 49 | #define RB_BIT_MASK 0x03 |
| IanBenzMaxim | 7:9cd16581b578 | 50 | #define RB_BIT_ONE 0x03 |
| IanBenzMaxim | 7:9cd16581b578 | 51 | #define RB_BIT_ZERO 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 52 | |
| IanBenzMaxim | 7:9cd16581b578 | 53 | // Masks for all bit ranges |
| IanBenzMaxim | 7:9cd16581b578 | 54 | #define CMD_MASK 0x80 |
| IanBenzMaxim | 7:9cd16581b578 | 55 | #define FUNCTSEL_MASK 0x60 |
| IanBenzMaxim | 7:9cd16581b578 | 56 | #define BITPOL_MASK 0x10 |
| IanBenzMaxim | 7:9cd16581b578 | 57 | #define SPEEDSEL_MASK 0x0C |
| IanBenzMaxim | 7:9cd16581b578 | 58 | #define MODSEL_MASK 0x02 |
| IanBenzMaxim | 7:9cd16581b578 | 59 | #define PARMSEL_MASK 0x70 |
| IanBenzMaxim | 7:9cd16581b578 | 60 | #define PARMSET_MASK 0x0E |
| IanBenzMaxim | 7:9cd16581b578 | 61 | |
| IanBenzMaxim | 7:9cd16581b578 | 62 | // Command or config bit |
| IanBenzMaxim | 7:9cd16581b578 | 63 | #define CMD_COMM 0x81 |
| IanBenzMaxim | 7:9cd16581b578 | 64 | #define CMD_CONFIG 0x01 |
| IanBenzMaxim | 7:9cd16581b578 | 65 | |
| IanBenzMaxim | 7:9cd16581b578 | 66 | // Function select bits |
| IanBenzMaxim | 7:9cd16581b578 | 67 | #define FUNCTSEL_BIT 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 68 | #define FUNCTSEL_SEARCHON 0x30 |
| IanBenzMaxim | 7:9cd16581b578 | 69 | #define FUNCTSEL_SEARCHOFF 0x20 |
| IanBenzMaxim | 7:9cd16581b578 | 70 | #define FUNCTSEL_RESET 0x40 |
| IanBenzMaxim | 7:9cd16581b578 | 71 | #define FUNCTSEL_CHMOD 0x60 |
| IanBenzMaxim | 7:9cd16581b578 | 72 | |
| IanBenzMaxim | 7:9cd16581b578 | 73 | // Bit polarity/Pulse voltage bits |
| IanBenzMaxim | 7:9cd16581b578 | 74 | #define BITPOL_ONE 0x10 |
| IanBenzMaxim | 7:9cd16581b578 | 75 | #define BITPOL_ZERO 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 76 | #define BITPOL_5V 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 77 | #define BITPOL_12V 0x10 |
| IanBenzMaxim | 7:9cd16581b578 | 78 | |
| IanBenzMaxim | 7:9cd16581b578 | 79 | // One Wire speed bits |
| IanBenzMaxim | 7:9cd16581b578 | 80 | #define SPEEDSEL_STD 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 81 | #define SPEEDSEL_FLEX 0x04 |
| IanBenzMaxim | 7:9cd16581b578 | 82 | #define SPEEDSEL_OD 0x08 |
| IanBenzMaxim | 7:9cd16581b578 | 83 | #define SPEEDSEL_PULSE 0x0C |
| IanBenzMaxim | 7:9cd16581b578 | 84 | |
| IanBenzMaxim | 7:9cd16581b578 | 85 | // Data/Command mode select bits |
| IanBenzMaxim | 7:9cd16581b578 | 86 | #define MODSEL_DATA 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 87 | #define MODSEL_COMMAND 0x02 |
| IanBenzMaxim | 7:9cd16581b578 | 88 | |
| IanBenzMaxim | 7:9cd16581b578 | 89 | // 5V Follow Pulse select bits |
| IanBenzMaxim | 7:9cd16581b578 | 90 | #define PRIME5V_TRUE 0x02 |
| IanBenzMaxim | 7:9cd16581b578 | 91 | #define PRIME5V_FALSE 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 92 | |
| IanBenzMaxim | 7:9cd16581b578 | 93 | // Parameter select bits |
| IanBenzMaxim | 7:9cd16581b578 | 94 | #define PARMSEL_PARMREAD 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 95 | #define PARMSEL_SLEW 0x10 |
| IanBenzMaxim | 7:9cd16581b578 | 96 | #define PARMSEL_12VPULSE 0x20 |
| IanBenzMaxim | 7:9cd16581b578 | 97 | #define PARMSEL_5VPULSE 0x30 |
| IanBenzMaxim | 7:9cd16581b578 | 98 | #define PARMSEL_WRITE1LOW 0x40 |
| IanBenzMaxim | 7:9cd16581b578 | 99 | #define PARMSEL_SAMPLEOFFSET 0x50 |
| IanBenzMaxim | 7:9cd16581b578 | 100 | #define PARMSEL_ACTIVEPULLUPTIME 0x60 |
| IanBenzMaxim | 7:9cd16581b578 | 101 | #define PARMSEL_BAUDRATE 0x70 |
| IanBenzMaxim | 7:9cd16581b578 | 102 | |
| IanBenzMaxim | 7:9cd16581b578 | 103 | // Pull down slew rate. |
| IanBenzMaxim | 7:9cd16581b578 | 104 | #define PARMSET_Slew15Vus 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 105 | #define PARMSET_Slew2p2Vus 0x02 |
| IanBenzMaxim | 7:9cd16581b578 | 106 | #define PARMSET_Slew1p65Vus 0x04 |
| IanBenzMaxim | 7:9cd16581b578 | 107 | #define PARMSET_Slew1p37Vus 0x06 |
| IanBenzMaxim | 7:9cd16581b578 | 108 | #define PARMSET_Slew1p1Vus 0x08 |
| IanBenzMaxim | 7:9cd16581b578 | 109 | #define PARMSET_Slew0p83Vus 0x0A |
| IanBenzMaxim | 7:9cd16581b578 | 110 | #define PARMSET_Slew0p7Vus 0x0C |
| IanBenzMaxim | 7:9cd16581b578 | 111 | #define PARMSET_Slew0p55Vus 0x0E |
| IanBenzMaxim | 7:9cd16581b578 | 112 | |
| IanBenzMaxim | 7:9cd16581b578 | 113 | // 12V programming pulse time table |
| IanBenzMaxim | 7:9cd16581b578 | 114 | #define PARMSET_32us 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 115 | #define PARMSET_64us 0x02 |
| IanBenzMaxim | 7:9cd16581b578 | 116 | #define PARMSET_128us 0x04 |
| IanBenzMaxim | 7:9cd16581b578 | 117 | #define PARMSET_256us 0x06 |
| IanBenzMaxim | 7:9cd16581b578 | 118 | #define PARMSET_512us 0x08 |
| IanBenzMaxim | 7:9cd16581b578 | 119 | #define PARMSET_1024us 0x0A |
| IanBenzMaxim | 7:9cd16581b578 | 120 | #define PARMSET_2048us 0x0C |
| IanBenzMaxim | 7:9cd16581b578 | 121 | #define PARMSET_infinite 0x0E |
| IanBenzMaxim | 7:9cd16581b578 | 122 | |
| IanBenzMaxim | 7:9cd16581b578 | 123 | // 5V strong pull up pulse time table |
| IanBenzMaxim | 7:9cd16581b578 | 124 | #define PARMSET_16p4ms 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 125 | #define PARMSET_65p5ms 0x02 |
| IanBenzMaxim | 7:9cd16581b578 | 126 | #define PARMSET_131ms 0x04 |
| IanBenzMaxim | 7:9cd16581b578 | 127 | #define PARMSET_262ms 0x06 |
| IanBenzMaxim | 7:9cd16581b578 | 128 | #define PARMSET_524ms 0x08 |
| IanBenzMaxim | 7:9cd16581b578 | 129 | #define PARMSET_1p05s 0x0A |
| IanBenzMaxim | 7:9cd16581b578 | 130 | #define PARMSET_dynamic 0x0C |
| IanBenzMaxim | 7:9cd16581b578 | 131 | #define PARMSET_infinite 0x0E |
| IanBenzMaxim | 7:9cd16581b578 | 132 | |
| IanBenzMaxim | 7:9cd16581b578 | 133 | // Write 1 low time |
| IanBenzMaxim | 7:9cd16581b578 | 134 | #define PARMSET_Write8us 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 135 | #define PARMSET_Write9us 0x02 |
| IanBenzMaxim | 7:9cd16581b578 | 136 | #define PARMSET_Write10us 0x04 |
| IanBenzMaxim | 7:9cd16581b578 | 137 | #define PARMSET_Write11us 0x06 |
| IanBenzMaxim | 7:9cd16581b578 | 138 | #define PARMSET_Write12us 0x08 |
| IanBenzMaxim | 7:9cd16581b578 | 139 | #define PARMSET_Write13us 0x0A |
| IanBenzMaxim | 7:9cd16581b578 | 140 | #define PARMSET_Write14us 0x0C |
| IanBenzMaxim | 7:9cd16581b578 | 141 | #define PARMSET_Write15us 0x0E |
| IanBenzMaxim | 7:9cd16581b578 | 142 | |
| IanBenzMaxim | 7:9cd16581b578 | 143 | // Data sample offset and Write 0 recovery time |
| IanBenzMaxim | 7:9cd16581b578 | 144 | #define PARMSET_SampOff3us 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 145 | #define PARMSET_SampOff4us 0x02 |
| IanBenzMaxim | 7:9cd16581b578 | 146 | #define PARMSET_SampOff5us 0x04 |
| IanBenzMaxim | 7:9cd16581b578 | 147 | #define PARMSET_SampOff6us 0x06 |
| IanBenzMaxim | 7:9cd16581b578 | 148 | #define PARMSET_SampOff7us 0x08 |
| IanBenzMaxim | 7:9cd16581b578 | 149 | #define PARMSET_SampOff8us 0x0A |
| IanBenzMaxim | 7:9cd16581b578 | 150 | #define PARMSET_SampOff9us 0x0C |
| IanBenzMaxim | 7:9cd16581b578 | 151 | #define PARMSET_SampOff10us 0x0E |
| IanBenzMaxim | 7:9cd16581b578 | 152 | |
| IanBenzMaxim | 7:9cd16581b578 | 153 | // Active pull up on time |
| IanBenzMaxim | 7:9cd16581b578 | 154 | #define PARMSET_PullUp0p0us 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 155 | #define PARMSET_PullUp0p5us 0x02 |
| IanBenzMaxim | 7:9cd16581b578 | 156 | #define PARMSET_PullUp1p0us 0x04 |
| IanBenzMaxim | 7:9cd16581b578 | 157 | #define PARMSET_PullUp1p5us 0x06 |
| IanBenzMaxim | 7:9cd16581b578 | 158 | #define PARMSET_PullUp2p0us 0x08 |
| IanBenzMaxim | 7:9cd16581b578 | 159 | #define PARMSET_PullUp2p5us 0x0A |
| IanBenzMaxim | 7:9cd16581b578 | 160 | #define PARMSET_PullUp3p0us 0x0C |
| IanBenzMaxim | 7:9cd16581b578 | 161 | #define PARMSET_PullUp3p5us 0x0E |
| IanBenzMaxim | 7:9cd16581b578 | 162 | |
| IanBenzMaxim | 7:9cd16581b578 | 163 | // Baud rate bits |
| IanBenzMaxim | 7:9cd16581b578 | 164 | #define PARMSET_9600 0x00 |
| IanBenzMaxim | 7:9cd16581b578 | 165 | #define PARMSET_19200 0x02 |
| IanBenzMaxim | 7:9cd16581b578 | 166 | #define PARMSET_57600 0x04 |
| IanBenzMaxim | 7:9cd16581b578 | 167 | #define PARMSET_115200 0x06 |
| IanBenzMaxim | 7:9cd16581b578 | 168 | |
| IanBenzMaxim | 7:9cd16581b578 | 169 | // DS2480B program voltage available |
| IanBenzMaxim | 7:9cd16581b578 | 170 | #define DS2480BPROG_MASK 0x20 |
| IanBenzMaxim | 7:9cd16581b578 | 171 | |
| IanBenzMaxim | 7:9cd16581b578 | 172 | namespace MaximInterfaceDevices { |
| IanBenzMaxim | 7:9cd16581b578 | 173 | |
| IanBenzMaxim | 7:9cd16581b578 | 174 | using namespace Core; |
| IanBenzMaxim | 7:9cd16581b578 | 175 | |
| IanBenzMaxim | 7:9cd16581b578 | 176 | error_code DS2480B::initialize() { |
| IanBenzMaxim | 7:9cd16581b578 | 177 | level = NormalLevel; |
| IanBenzMaxim | 7:9cd16581b578 | 178 | mode = MODSEL_COMMAND; |
| IanBenzMaxim | 7:9cd16581b578 | 179 | speed = SPEEDSEL_STD; |
| IanBenzMaxim | 7:9cd16581b578 | 180 | |
| IanBenzMaxim | 7:9cd16581b578 | 181 | // Send a break to reset the DS2480B. |
| IanBenzMaxim | 7:9cd16581b578 | 182 | // Switch to lower baud rate to ensure break is longer than 2 ms. |
| IanBenzMaxim | 7:9cd16581b578 | 183 | error_code result = uart->setBaudRate(4800); |
| IanBenzMaxim | 7:9cd16581b578 | 184 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 185 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 186 | } |
| IanBenzMaxim | 7:9cd16581b578 | 187 | result = uart->sendBreak(); |
| IanBenzMaxim | 7:9cd16581b578 | 188 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 189 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 190 | } |
| IanBenzMaxim | 7:9cd16581b578 | 191 | result = uart->setBaudRate(9600); |
| IanBenzMaxim | 7:9cd16581b578 | 192 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 193 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 194 | } |
| IanBenzMaxim | 7:9cd16581b578 | 195 | |
| IanBenzMaxim | 7:9cd16581b578 | 196 | // Wait for master reset. |
| IanBenzMaxim | 7:9cd16581b578 | 197 | sleep->invoke(1); |
| IanBenzMaxim | 7:9cd16581b578 | 198 | |
| IanBenzMaxim | 7:9cd16581b578 | 199 | // Flush the read buffer. |
| IanBenzMaxim | 7:9cd16581b578 | 200 | result = uart->clearReadBuffer(); |
| IanBenzMaxim | 7:9cd16581b578 | 201 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 202 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 203 | } |
| IanBenzMaxim | 7:9cd16581b578 | 204 | |
| IanBenzMaxim | 7:9cd16581b578 | 205 | // Send the timing byte. |
| IanBenzMaxim | 7:9cd16581b578 | 206 | result = uart->writeByte(CMD_COMM | FUNCTSEL_RESET | SPEEDSEL_STD); |
| IanBenzMaxim | 7:9cd16581b578 | 207 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 208 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 209 | } |
| IanBenzMaxim | 7:9cd16581b578 | 210 | |
| IanBenzMaxim | 7:9cd16581b578 | 211 | // Change the DS2480 baud rate. |
| IanBenzMaxim | 7:9cd16581b578 | 212 | result = uart->writeByte(CMD_CONFIG | PARMSEL_BAUDRATE | PARMSET_115200); |
| IanBenzMaxim | 7:9cd16581b578 | 213 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 214 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 215 | } |
| IanBenzMaxim | 7:9cd16581b578 | 216 | |
| IanBenzMaxim | 7:9cd16581b578 | 217 | // Change our baud rate. |
| IanBenzMaxim | 7:9cd16581b578 | 218 | result = uart->setBaudRate(115200); |
| IanBenzMaxim | 7:9cd16581b578 | 219 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 220 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 221 | } |
| IanBenzMaxim | 7:9cd16581b578 | 222 | |
| IanBenzMaxim | 7:9cd16581b578 | 223 | uint_least8_t response; |
| IanBenzMaxim | 7:9cd16581b578 | 224 | |
| IanBenzMaxim | 7:9cd16581b578 | 225 | // Verify response. |
| IanBenzMaxim | 7:9cd16581b578 | 226 | result = uart->readByte(response); |
| IanBenzMaxim | 7:9cd16581b578 | 227 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 228 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 229 | } |
| IanBenzMaxim | 7:9cd16581b578 | 230 | if ((response & (PARMSEL_MASK | PARMSET_MASK)) != |
| IanBenzMaxim | 7:9cd16581b578 | 231 | (PARMSEL_BAUDRATE | PARMSET_115200)) { |
| IanBenzMaxim | 7:9cd16581b578 | 232 | return make_error_code(HardwareError); |
| IanBenzMaxim | 7:9cd16581b578 | 233 | } |
| IanBenzMaxim | 7:9cd16581b578 | 234 | |
| IanBenzMaxim | 7:9cd16581b578 | 235 | // Set the SPUD time value. |
| IanBenzMaxim | 7:9cd16581b578 | 236 | result = uart->writeByte(CMD_CONFIG | PARMSEL_5VPULSE | PARMSET_infinite); |
| IanBenzMaxim | 7:9cd16581b578 | 237 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 238 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 239 | } |
| IanBenzMaxim | 7:9cd16581b578 | 240 | |
| IanBenzMaxim | 7:9cd16581b578 | 241 | // Verify response. |
| IanBenzMaxim | 7:9cd16581b578 | 242 | result = uart->readByte(response); |
| IanBenzMaxim | 7:9cd16581b578 | 243 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 244 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 245 | } |
| IanBenzMaxim | 7:9cd16581b578 | 246 | if ((response & (PARMSEL_MASK | PARMSET_MASK)) != |
| IanBenzMaxim | 7:9cd16581b578 | 247 | (PARMSEL_5VPULSE | PARMSET_infinite)) { |
| IanBenzMaxim | 7:9cd16581b578 | 248 | return make_error_code(HardwareError); |
| IanBenzMaxim | 7:9cd16581b578 | 249 | } |
| IanBenzMaxim | 7:9cd16581b578 | 250 | |
| IanBenzMaxim | 7:9cd16581b578 | 251 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 252 | } |
| IanBenzMaxim | 7:9cd16581b578 | 253 | |
| IanBenzMaxim | 7:9cd16581b578 | 254 | error_code DS2480B::reset() { |
| IanBenzMaxim | 7:9cd16581b578 | 255 | if (level != NormalLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 256 | return make_error_code(InvalidLevelError); |
| IanBenzMaxim | 7:9cd16581b578 | 257 | } |
| IanBenzMaxim | 7:9cd16581b578 | 258 | |
| IanBenzMaxim | 7:9cd16581b578 | 259 | uint_least8_t packet[2]; |
| IanBenzMaxim | 7:9cd16581b578 | 260 | int packetLen = 0; |
| IanBenzMaxim | 7:9cd16581b578 | 261 | |
| IanBenzMaxim | 7:9cd16581b578 | 262 | // Check for correct mode. |
| IanBenzMaxim | 7:9cd16581b578 | 263 | if (mode != MODSEL_COMMAND) { |
| IanBenzMaxim | 7:9cd16581b578 | 264 | mode = MODSEL_COMMAND; |
| IanBenzMaxim | 7:9cd16581b578 | 265 | packet[packetLen++] = MODE_COMMAND; |
| IanBenzMaxim | 7:9cd16581b578 | 266 | } |
| IanBenzMaxim | 7:9cd16581b578 | 267 | |
| IanBenzMaxim | 7:9cd16581b578 | 268 | // Construct the command. |
| IanBenzMaxim | 7:9cd16581b578 | 269 | packet[packetLen++] = CMD_COMM | FUNCTSEL_RESET | speed; |
| IanBenzMaxim | 7:9cd16581b578 | 270 | |
| IanBenzMaxim | 7:9cd16581b578 | 271 | // Send the packet. |
| IanBenzMaxim | 7:9cd16581b578 | 272 | error_code result = uart->writeBlock(make_span(packet, packetLen)); |
| IanBenzMaxim | 7:9cd16581b578 | 273 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 274 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 275 | } |
| IanBenzMaxim | 7:9cd16581b578 | 276 | |
| IanBenzMaxim | 7:9cd16581b578 | 277 | // Read back the response. |
| IanBenzMaxim | 7:9cd16581b578 | 278 | result = uart->readByte(packet[0]); |
| IanBenzMaxim | 7:9cd16581b578 | 279 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 280 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 281 | } |
| IanBenzMaxim | 7:9cd16581b578 | 282 | |
| IanBenzMaxim | 7:9cd16581b578 | 283 | // Make sure this byte looks like a reset byte. |
| IanBenzMaxim | 7:9cd16581b578 | 284 | if ((packet[0] & RB_RESET_MASK) == RB_1WIRESHORT) { |
| IanBenzMaxim | 7:9cd16581b578 | 285 | result = make_error_code(ShortDetectedError); |
| IanBenzMaxim | 7:9cd16581b578 | 286 | } else if ((packet[0] & RB_RESET_MASK) == RB_NOPRESENCE) { |
| IanBenzMaxim | 7:9cd16581b578 | 287 | result = make_error_code(NoSlaveError); |
| IanBenzMaxim | 7:9cd16581b578 | 288 | } |
| IanBenzMaxim | 7:9cd16581b578 | 289 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 290 | } |
| IanBenzMaxim | 7:9cd16581b578 | 291 | |
| IanBenzMaxim | 7:9cd16581b578 | 292 | error_code DS2480B::touchBitSetLevel(bool & sendRecvBit, Level afterLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 293 | if (level != NormalLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 294 | return make_error_code(InvalidLevelError); |
| IanBenzMaxim | 7:9cd16581b578 | 295 | } |
| IanBenzMaxim | 7:9cd16581b578 | 296 | |
| IanBenzMaxim | 7:9cd16581b578 | 297 | uint_least8_t packet[3]; |
| IanBenzMaxim | 7:9cd16581b578 | 298 | int packetLen = 0; |
| IanBenzMaxim | 7:9cd16581b578 | 299 | |
| IanBenzMaxim | 7:9cd16581b578 | 300 | // Check for correct mode. |
| IanBenzMaxim | 7:9cd16581b578 | 301 | if (mode != MODSEL_COMMAND) { |
| IanBenzMaxim | 7:9cd16581b578 | 302 | mode = MODSEL_COMMAND; |
| IanBenzMaxim | 7:9cd16581b578 | 303 | packet[packetLen++] = MODE_COMMAND; |
| IanBenzMaxim | 7:9cd16581b578 | 304 | } |
| IanBenzMaxim | 7:9cd16581b578 | 305 | |
| IanBenzMaxim | 7:9cd16581b578 | 306 | // Construct the command. |
| IanBenzMaxim | 7:9cd16581b578 | 307 | packet[packetLen++] = CMD_COMM | FUNCTSEL_BIT | |
| IanBenzMaxim | 7:9cd16581b578 | 308 | (sendRecvBit ? BITPOL_ONE : BITPOL_ZERO) | speed; |
| IanBenzMaxim | 7:9cd16581b578 | 309 | switch (afterLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 310 | case NormalLevel: |
| IanBenzMaxim | 7:9cd16581b578 | 311 | break; |
| IanBenzMaxim | 7:9cd16581b578 | 312 | |
| IanBenzMaxim | 7:9cd16581b578 | 313 | case StrongLevel: |
| IanBenzMaxim | 7:9cd16581b578 | 314 | // Add the command to begin the pulse. |
| IanBenzMaxim | 7:9cd16581b578 | 315 | packet[packetLen++] = |
| IanBenzMaxim | 7:9cd16581b578 | 316 | CMD_COMM | FUNCTSEL_CHMOD | SPEEDSEL_PULSE | BITPOL_5V | PRIME5V_FALSE; |
| IanBenzMaxim | 7:9cd16581b578 | 317 | break; |
| IanBenzMaxim | 7:9cd16581b578 | 318 | |
| IanBenzMaxim | 7:9cd16581b578 | 319 | default: |
| IanBenzMaxim | 7:9cd16581b578 | 320 | return make_error_code(InvalidLevelError); |
| IanBenzMaxim | 7:9cd16581b578 | 321 | } |
| IanBenzMaxim | 7:9cd16581b578 | 322 | |
| IanBenzMaxim | 7:9cd16581b578 | 323 | // Send the packet. |
| IanBenzMaxim | 7:9cd16581b578 | 324 | error_code result = uart->writeBlock(make_span(packet, packetLen)); |
| IanBenzMaxim | 7:9cd16581b578 | 325 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 326 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 327 | } |
| IanBenzMaxim | 7:9cd16581b578 | 328 | |
| IanBenzMaxim | 7:9cd16581b578 | 329 | // Read back the response. |
| IanBenzMaxim | 7:9cd16581b578 | 330 | result = uart->readByte(packet[0]); |
| IanBenzMaxim | 7:9cd16581b578 | 331 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 332 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 333 | } |
| IanBenzMaxim | 7:9cd16581b578 | 334 | |
| IanBenzMaxim | 7:9cd16581b578 | 335 | // Interpret the response. |
| IanBenzMaxim | 7:9cd16581b578 | 336 | if ((packet[0] & 0xE0) == 0x80) { |
| IanBenzMaxim | 7:9cd16581b578 | 337 | sendRecvBit = ((packet[0] & RB_BIT_MASK) == RB_BIT_ONE); |
| IanBenzMaxim | 7:9cd16581b578 | 338 | level = afterLevel; |
| IanBenzMaxim | 7:9cd16581b578 | 339 | } else { |
| IanBenzMaxim | 7:9cd16581b578 | 340 | result = make_error_code(HardwareError); |
| IanBenzMaxim | 7:9cd16581b578 | 341 | } |
| IanBenzMaxim | 7:9cd16581b578 | 342 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 343 | } |
| IanBenzMaxim | 7:9cd16581b578 | 344 | |
| IanBenzMaxim | 7:9cd16581b578 | 345 | error_code DS2480B::writeByteSetLevel(uint_least8_t sendByte, |
| IanBenzMaxim | 7:9cd16581b578 | 346 | Level afterLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 347 | if (level != NormalLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 348 | return make_error_code(InvalidLevelError); |
| IanBenzMaxim | 7:9cd16581b578 | 349 | } |
| IanBenzMaxim | 7:9cd16581b578 | 350 | |
| IanBenzMaxim | 7:9cd16581b578 | 351 | switch (afterLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 352 | case NormalLevel: |
| IanBenzMaxim | 7:9cd16581b578 | 353 | break; |
| IanBenzMaxim | 7:9cd16581b578 | 354 | |
| IanBenzMaxim | 7:9cd16581b578 | 355 | case StrongLevel: |
| IanBenzMaxim | 7:9cd16581b578 | 356 | return OneWireMaster::writeByteSetLevel(sendByte, afterLevel); |
| IanBenzMaxim | 7:9cd16581b578 | 357 | |
| IanBenzMaxim | 7:9cd16581b578 | 358 | default: |
| IanBenzMaxim | 7:9cd16581b578 | 359 | return make_error_code(InvalidLevelError); |
| IanBenzMaxim | 7:9cd16581b578 | 360 | } |
| IanBenzMaxim | 7:9cd16581b578 | 361 | |
| IanBenzMaxim | 7:9cd16581b578 | 362 | uint_least8_t packet[3]; |
| IanBenzMaxim | 7:9cd16581b578 | 363 | int packetLen = 0; |
| IanBenzMaxim | 7:9cd16581b578 | 364 | |
| IanBenzMaxim | 7:9cd16581b578 | 365 | // Check for correct mode. |
| IanBenzMaxim | 7:9cd16581b578 | 366 | if (mode != MODSEL_DATA) { |
| IanBenzMaxim | 7:9cd16581b578 | 367 | mode = MODSEL_DATA; |
| IanBenzMaxim | 7:9cd16581b578 | 368 | packet[packetLen++] = MODE_DATA; |
| IanBenzMaxim | 7:9cd16581b578 | 369 | } |
| IanBenzMaxim | 7:9cd16581b578 | 370 | |
| IanBenzMaxim | 7:9cd16581b578 | 371 | // Add the byte to send. |
| IanBenzMaxim | 7:9cd16581b578 | 372 | packet[packetLen++] = sendByte; |
| IanBenzMaxim | 7:9cd16581b578 | 373 | |
| IanBenzMaxim | 7:9cd16581b578 | 374 | // Check for duplication of data that looks like COMMAND mode. |
| IanBenzMaxim | 7:9cd16581b578 | 375 | if (sendByte == MODE_COMMAND) { |
| IanBenzMaxim | 7:9cd16581b578 | 376 | packet[packetLen++] = sendByte; |
| IanBenzMaxim | 7:9cd16581b578 | 377 | } |
| IanBenzMaxim | 7:9cd16581b578 | 378 | |
| IanBenzMaxim | 7:9cd16581b578 | 379 | // Send the packet. |
| IanBenzMaxim | 7:9cd16581b578 | 380 | error_code result = uart->writeBlock(make_span(packet, packetLen)); |
| IanBenzMaxim | 7:9cd16581b578 | 381 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 382 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 383 | } |
| IanBenzMaxim | 7:9cd16581b578 | 384 | |
| IanBenzMaxim | 7:9cd16581b578 | 385 | // Read back the response. |
| IanBenzMaxim | 7:9cd16581b578 | 386 | result = uart->readByte(packet[0]); |
| IanBenzMaxim | 7:9cd16581b578 | 387 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 388 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 389 | } |
| IanBenzMaxim | 7:9cd16581b578 | 390 | |
| IanBenzMaxim | 7:9cd16581b578 | 391 | // Interpret the response. |
| IanBenzMaxim | 7:9cd16581b578 | 392 | if (packet[0] != sendByte) { |
| IanBenzMaxim | 7:9cd16581b578 | 393 | result = make_error_code(HardwareError); |
| IanBenzMaxim | 7:9cd16581b578 | 394 | } |
| IanBenzMaxim | 7:9cd16581b578 | 395 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 396 | } |
| IanBenzMaxim | 7:9cd16581b578 | 397 | |
| IanBenzMaxim | 7:9cd16581b578 | 398 | error_code DS2480B::readByteSetLevel(uint_least8_t & recvByte, |
| IanBenzMaxim | 7:9cd16581b578 | 399 | Level afterLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 400 | if (level != NormalLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 401 | return make_error_code(InvalidLevelError); |
| IanBenzMaxim | 7:9cd16581b578 | 402 | } |
| IanBenzMaxim | 7:9cd16581b578 | 403 | |
| IanBenzMaxim | 7:9cd16581b578 | 404 | switch (afterLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 405 | case NormalLevel: |
| IanBenzMaxim | 7:9cd16581b578 | 406 | break; |
| IanBenzMaxim | 7:9cd16581b578 | 407 | |
| IanBenzMaxim | 7:9cd16581b578 | 408 | case StrongLevel: |
| IanBenzMaxim | 7:9cd16581b578 | 409 | return OneWireMaster::readByteSetLevel(recvByte, afterLevel); |
| IanBenzMaxim | 7:9cd16581b578 | 410 | |
| IanBenzMaxim | 7:9cd16581b578 | 411 | default: |
| IanBenzMaxim | 7:9cd16581b578 | 412 | return make_error_code(InvalidLevelError); |
| IanBenzMaxim | 7:9cd16581b578 | 413 | } |
| IanBenzMaxim | 7:9cd16581b578 | 414 | |
| IanBenzMaxim | 7:9cd16581b578 | 415 | uint_least8_t packet[2]; |
| IanBenzMaxim | 7:9cd16581b578 | 416 | int packetLen = 0; |
| IanBenzMaxim | 7:9cd16581b578 | 417 | |
| IanBenzMaxim | 7:9cd16581b578 | 418 | // Check for correct mode. |
| IanBenzMaxim | 7:9cd16581b578 | 419 | if (mode != MODSEL_DATA) { |
| IanBenzMaxim | 7:9cd16581b578 | 420 | mode = MODSEL_DATA; |
| IanBenzMaxim | 7:9cd16581b578 | 421 | packet[packetLen++] = MODE_DATA; |
| IanBenzMaxim | 7:9cd16581b578 | 422 | } |
| IanBenzMaxim | 7:9cd16581b578 | 423 | |
| IanBenzMaxim | 7:9cd16581b578 | 424 | // Add the byte to send. |
| IanBenzMaxim | 7:9cd16581b578 | 425 | packet[packetLen++] = 0xFF; |
| IanBenzMaxim | 7:9cd16581b578 | 426 | |
| IanBenzMaxim | 7:9cd16581b578 | 427 | // Send the packet. |
| IanBenzMaxim | 7:9cd16581b578 | 428 | error_code result = uart->writeBlock(make_span(packet, packetLen)); |
| IanBenzMaxim | 7:9cd16581b578 | 429 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 430 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 431 | } |
| IanBenzMaxim | 7:9cd16581b578 | 432 | |
| IanBenzMaxim | 7:9cd16581b578 | 433 | // Read back the response. |
| IanBenzMaxim | 7:9cd16581b578 | 434 | result = uart->readByte(recvByte); |
| IanBenzMaxim | 7:9cd16581b578 | 435 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 436 | } |
| IanBenzMaxim | 7:9cd16581b578 | 437 | |
| IanBenzMaxim | 7:9cd16581b578 | 438 | error_code DS2480B::setSpeed(Speed newSpeed) { |
| IanBenzMaxim | 7:9cd16581b578 | 439 | uint_least8_t newSpeedByte; |
| IanBenzMaxim | 7:9cd16581b578 | 440 | switch (newSpeed) { |
| IanBenzMaxim | 7:9cd16581b578 | 441 | case OverdriveSpeed: |
| IanBenzMaxim | 7:9cd16581b578 | 442 | newSpeedByte = SPEEDSEL_OD; |
| IanBenzMaxim | 7:9cd16581b578 | 443 | break; |
| IanBenzMaxim | 7:9cd16581b578 | 444 | |
| IanBenzMaxim | 7:9cd16581b578 | 445 | case StandardSpeed: |
| IanBenzMaxim | 7:9cd16581b578 | 446 | newSpeedByte = SPEEDSEL_STD; |
| IanBenzMaxim | 7:9cd16581b578 | 447 | break; |
| IanBenzMaxim | 7:9cd16581b578 | 448 | |
| IanBenzMaxim | 7:9cd16581b578 | 449 | default: |
| IanBenzMaxim | 7:9cd16581b578 | 450 | return make_error_code(InvalidSpeedError); |
| IanBenzMaxim | 7:9cd16581b578 | 451 | } |
| IanBenzMaxim | 7:9cd16581b578 | 452 | if (speed == newSpeedByte) { |
| IanBenzMaxim | 7:9cd16581b578 | 453 | return error_code(); |
| IanBenzMaxim | 7:9cd16581b578 | 454 | } |
| IanBenzMaxim | 7:9cd16581b578 | 455 | speed = newSpeedByte; |
| IanBenzMaxim | 7:9cd16581b578 | 456 | |
| IanBenzMaxim | 7:9cd16581b578 | 457 | uint_least8_t packet[2]; |
| IanBenzMaxim | 7:9cd16581b578 | 458 | int packetLen = 0; |
| IanBenzMaxim | 7:9cd16581b578 | 459 | |
| IanBenzMaxim | 7:9cd16581b578 | 460 | // Check for correct mode. |
| IanBenzMaxim | 7:9cd16581b578 | 461 | if (mode != MODSEL_COMMAND) { |
| IanBenzMaxim | 7:9cd16581b578 | 462 | mode = MODSEL_COMMAND; |
| IanBenzMaxim | 7:9cd16581b578 | 463 | packet[packetLen++] = MODE_COMMAND; |
| IanBenzMaxim | 7:9cd16581b578 | 464 | } |
| IanBenzMaxim | 7:9cd16581b578 | 465 | |
| IanBenzMaxim | 7:9cd16581b578 | 466 | // Change DS2480 speed. |
| IanBenzMaxim | 7:9cd16581b578 | 467 | packet[packetLen++] = CMD_COMM | FUNCTSEL_SEARCHOFF | speed; |
| IanBenzMaxim | 7:9cd16581b578 | 468 | |
| IanBenzMaxim | 7:9cd16581b578 | 469 | // Send the packet. |
| IanBenzMaxim | 7:9cd16581b578 | 470 | return uart->writeBlock(make_span(packet, packetLen)); |
| IanBenzMaxim | 7:9cd16581b578 | 471 | } |
| IanBenzMaxim | 7:9cd16581b578 | 472 | |
| IanBenzMaxim | 7:9cd16581b578 | 473 | error_code DS2480B::setLevel(Level newLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 474 | if (level == newLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 475 | return error_code(); |
| IanBenzMaxim | 7:9cd16581b578 | 476 | } |
| IanBenzMaxim | 7:9cd16581b578 | 477 | |
| IanBenzMaxim | 7:9cd16581b578 | 478 | uint_least8_t packet[2]; |
| IanBenzMaxim | 7:9cd16581b578 | 479 | int packetLen = 0; |
| IanBenzMaxim | 7:9cd16581b578 | 480 | |
| IanBenzMaxim | 7:9cd16581b578 | 481 | switch (newLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 482 | case NormalLevel: |
| IanBenzMaxim | 7:9cd16581b578 | 483 | // Stop pulse command. |
| IanBenzMaxim | 7:9cd16581b578 | 484 | packet[packetLen++] = MODE_STOP_PULSE; |
| IanBenzMaxim | 7:9cd16581b578 | 485 | break; |
| IanBenzMaxim | 7:9cd16581b578 | 486 | |
| IanBenzMaxim | 7:9cd16581b578 | 487 | case StrongLevel: |
| IanBenzMaxim | 7:9cd16581b578 | 488 | // Check for correct mode. |
| IanBenzMaxim | 7:9cd16581b578 | 489 | if (mode != MODSEL_COMMAND) { |
| IanBenzMaxim | 7:9cd16581b578 | 490 | mode = MODSEL_COMMAND; |
| IanBenzMaxim | 7:9cd16581b578 | 491 | packet[packetLen++] = MODE_COMMAND; |
| IanBenzMaxim | 7:9cd16581b578 | 492 | } |
| IanBenzMaxim | 7:9cd16581b578 | 493 | |
| IanBenzMaxim | 7:9cd16581b578 | 494 | // Add the command to begin the pulse. |
| IanBenzMaxim | 7:9cd16581b578 | 495 | packet[packetLen++] = |
| IanBenzMaxim | 7:9cd16581b578 | 496 | CMD_COMM | FUNCTSEL_CHMOD | SPEEDSEL_PULSE | BITPOL_5V | PRIME5V_FALSE; |
| IanBenzMaxim | 7:9cd16581b578 | 497 | break; |
| IanBenzMaxim | 7:9cd16581b578 | 498 | |
| IanBenzMaxim | 7:9cd16581b578 | 499 | default: |
| IanBenzMaxim | 7:9cd16581b578 | 500 | return make_error_code(InvalidLevelError); |
| IanBenzMaxim | 7:9cd16581b578 | 501 | } |
| IanBenzMaxim | 7:9cd16581b578 | 502 | |
| IanBenzMaxim | 7:9cd16581b578 | 503 | // Send the packet. |
| IanBenzMaxim | 7:9cd16581b578 | 504 | error_code result = uart->writeBlock(make_span(packet, packetLen)); |
| IanBenzMaxim | 7:9cd16581b578 | 505 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 506 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 507 | } |
| IanBenzMaxim | 7:9cd16581b578 | 508 | |
| IanBenzMaxim | 7:9cd16581b578 | 509 | if (newLevel == NormalLevel) { |
| IanBenzMaxim | 7:9cd16581b578 | 510 | // Read back the response. |
| IanBenzMaxim | 7:9cd16581b578 | 511 | result = uart->readByte(packet[0]); |
| IanBenzMaxim | 7:9cd16581b578 | 512 | if (result) { |
| IanBenzMaxim | 7:9cd16581b578 | 513 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 514 | } |
| IanBenzMaxim | 7:9cd16581b578 | 515 | |
| IanBenzMaxim | 7:9cd16581b578 | 516 | // Interpret the response. |
| IanBenzMaxim | 7:9cd16581b578 | 517 | if ((packet[0] & 0xE0) != 0xE0) { |
| IanBenzMaxim | 7:9cd16581b578 | 518 | return make_error_code(HardwareError); |
| IanBenzMaxim | 7:9cd16581b578 | 519 | } |
| IanBenzMaxim | 7:9cd16581b578 | 520 | } |
| IanBenzMaxim | 7:9cd16581b578 | 521 | |
| IanBenzMaxim | 7:9cd16581b578 | 522 | level = newLevel; |
| IanBenzMaxim | 7:9cd16581b578 | 523 | return result; |
| IanBenzMaxim | 7:9cd16581b578 | 524 | } |
| IanBenzMaxim | 7:9cd16581b578 | 525 | |
| IanBenzMaxim | 7:9cd16581b578 | 526 | error_code DS2480B::sendCommand(uint_least8_t command) { |
| IanBenzMaxim | 7:9cd16581b578 | 527 | uint_least8_t packet[2]; |
| IanBenzMaxim | 7:9cd16581b578 | 528 | int packetLen = 0; |
| IanBenzMaxim | 7:9cd16581b578 | 529 | |
| IanBenzMaxim | 7:9cd16581b578 | 530 | // Check for correct mode. |
| IanBenzMaxim | 7:9cd16581b578 | 531 | if (mode != MODSEL_COMMAND) { |
| IanBenzMaxim | 7:9cd16581b578 | 532 | mode = MODSEL_COMMAND; |
| IanBenzMaxim | 7:9cd16581b578 | 533 | packet[packetLen++] = MODE_COMMAND; |
| IanBenzMaxim | 7:9cd16581b578 | 534 | } |
| IanBenzMaxim | 7:9cd16581b578 | 535 | |
| IanBenzMaxim | 7:9cd16581b578 | 536 | // Add command. |
| IanBenzMaxim | 7:9cd16581b578 | 537 | packet[packetLen++] = command; |
| IanBenzMaxim | 7:9cd16581b578 | 538 | |
| IanBenzMaxim | 7:9cd16581b578 | 539 | // Send the packet. |
| IanBenzMaxim | 7:9cd16581b578 | 540 | return uart->writeBlock(make_span(packet, packetLen)); |
| IanBenzMaxim | 7:9cd16581b578 | 541 | } |
| IanBenzMaxim | 7:9cd16581b578 | 542 | |
| IanBenzMaxim | 7:9cd16581b578 | 543 | const error_category & DS2480B::errorCategory() { |
| IanBenzMaxim | 7:9cd16581b578 | 544 | static class : public error_category { |
| IanBenzMaxim | 7:9cd16581b578 | 545 | public: |
| IanBenzMaxim | 7:9cd16581b578 | 546 | virtual const char * name() const { return "DS2480B"; } |
| IanBenzMaxim | 7:9cd16581b578 | 547 | |
| IanBenzMaxim | 7:9cd16581b578 | 548 | virtual std::string message(int condition) const { |
| IanBenzMaxim | 7:9cd16581b578 | 549 | switch (condition) { |
| IanBenzMaxim | 7:9cd16581b578 | 550 | case HardwareError: |
| IanBenzMaxim | 7:9cd16581b578 | 551 | return "Hardware Error"; |
| IanBenzMaxim | 7:9cd16581b578 | 552 | |
| IanBenzMaxim | 7:9cd16581b578 | 553 | default: |
| IanBenzMaxim | 7:9cd16581b578 | 554 | return defaultErrorMessage(condition); |
| IanBenzMaxim | 7:9cd16581b578 | 555 | } |
| IanBenzMaxim | 7:9cd16581b578 | 556 | } |
| IanBenzMaxim | 7:9cd16581b578 | 557 | } instance; |
| IanBenzMaxim | 7:9cd16581b578 | 558 | return instance; |
| IanBenzMaxim | 7:9cd16581b578 | 559 | } |
| IanBenzMaxim | 7:9cd16581b578 | 560 | |
| IanBenzMaxim | 7:9cd16581b578 | 561 | } // namespace MaximInterfaceDevices |