Maxim Integrated / MaximInterface

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

MaximInterfaceCore/RunCommand.cpp@11:3f3bf6bf5e6c, 2019-12-03 (annotated)

Committer:
IanBenzMaxim
Date:
Tue Dec 03 10:52:28 2019 -0600
Revision:
11:3f3bf6bf5e6c
Parent:
10:947d3f44e0a0 
Updated to version 2.1.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
IanBenzMaxim 7:9cd16581b578 1 /*******************************************************************************
IanBenzMaxim 8:5ea891c7d1a1 2 * Copyright (C) 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 8:5ea891c7d1a1 33 #include "Crc.hpp"
IanBenzMaxim 7:9cd16581b578 34 #include "Error.hpp"
IanBenzMaxim 7:9cd16581b578 35 #include "I2CMaster.hpp"
IanBenzMaxim 7:9cd16581b578 36 #include "OneWireMaster.hpp"
IanBenzMaxim 7:9cd16581b578 37 #include "RunCommand.hpp"
IanBenzMaxim 7:9cd16581b578 38 #include "Sleep.hpp"
IanBenzMaxim 7:9cd16581b578 39
IanBenzMaxim 7:9cd16581b578 40 namespace MaximInterfaceCore {
IanBenzMaxim 7:9cd16581b578 41
IanBenzMaxim 7:9cd16581b578 42 const error_category & RunCommandWithOneWireMaster::errorCategory() {
IanBenzMaxim 7:9cd16581b578 43 static class : public error_category {
IanBenzMaxim 7:9cd16581b578 44 public:
IanBenzMaxim 11:3f3bf6bf5e6c 45 virtual const char * name() const {
IanBenzMaxim 11:3f3bf6bf5e6c 46 return "MaximInterfaceCore.RunCommandWithOneWireMaster";
IanBenzMaxim 11:3f3bf6bf5e6c 47 }
IanBenzMaxim 7:9cd16581b578 48
IanBenzMaxim 7:9cd16581b578 49 virtual std::string message(int condition) const {
IanBenzMaxim 7:9cd16581b578 50 switch (condition) {
IanBenzMaxim 7:9cd16581b578 51 case CrcError:
IanBenzMaxim 7:9cd16581b578 52 return "CRC Error";
IanBenzMaxim 7:9cd16581b578 53
IanBenzMaxim 7:9cd16581b578 54 case InvalidResponseError:
IanBenzMaxim 7:9cd16581b578 55 return "Invalid Response Error";
IanBenzMaxim 7:9cd16581b578 56 }
IanBenzMaxim 7:9cd16581b578 57 return defaultErrorMessage(condition);
IanBenzMaxim 7:9cd16581b578 58 }
IanBenzMaxim 7:9cd16581b578 59 } instance;
IanBenzMaxim 7:9cd16581b578 60 return instance;
IanBenzMaxim 7:9cd16581b578 61 }
IanBenzMaxim 7:9cd16581b578 62
IanBenzMaxim 8:5ea891c7d1a1 63 Result<span<uint_least8_t> > RunCommandWithOneWireMaster::
IanBenzMaxim 7:9cd16581b578 64 operator()(span<const uint_least8_t> request, int delayTime,
IanBenzMaxim 8:5ea891c7d1a1 65 span<uint_least8_t> response) const {
IanBenzMaxim 7:9cd16581b578 66 // Write request.
IanBenzMaxim 8:5ea891c7d1a1 67 Result<void> result = selectRom(*master);
IanBenzMaxim 8:5ea891c7d1a1 68 if (!result) {
IanBenzMaxim 8:5ea891c7d1a1 69 return result.error();
IanBenzMaxim 7:9cd16581b578 70 }
IanBenzMaxim 7:9cd16581b578 71 uint_least8_t xpcBuffer[2] = {0x66,
IanBenzMaxim 7:9cd16581b578 72 static_cast<uint_least8_t>(request.size())};
IanBenzMaxim 7:9cd16581b578 73 result = master->writeBlock(xpcBuffer);
IanBenzMaxim 8:5ea891c7d1a1 74 if (!result) {
IanBenzMaxim 8:5ea891c7d1a1 75 return result.error();
IanBenzMaxim 7:9cd16581b578 76 }
IanBenzMaxim 7:9cd16581b578 77 result = master->writeBlock(request);
IanBenzMaxim 8:5ea891c7d1a1 78 if (!result) {
IanBenzMaxim 8:5ea891c7d1a1 79 return result.error();
IanBenzMaxim 7:9cd16581b578 80 }
IanBenzMaxim 7:9cd16581b578 81 uint_fast16_t expectedCrc =
IanBenzMaxim 10:947d3f44e0a0 82 calculateCrc16(calculateCrc16(xpcBuffer), request) ^ 0xFFFF;
IanBenzMaxim 7:9cd16581b578 83 result = master->readBlock(xpcBuffer);
IanBenzMaxim 8:5ea891c7d1a1 84 if (!result) {
IanBenzMaxim 8:5ea891c7d1a1 85 return result.error();
IanBenzMaxim 7:9cd16581b578 86 }
IanBenzMaxim 7:9cd16581b578 87 if (expectedCrc !=
IanBenzMaxim 7:9cd16581b578 88 ((static_cast<uint_fast16_t>(xpcBuffer[1]) << 8) | xpcBuffer[0])) {
IanBenzMaxim 8:5ea891c7d1a1 89 return CrcError;
IanBenzMaxim 7:9cd16581b578 90 }
IanBenzMaxim 7:9cd16581b578 91 result = master->writeBytePower(0xAA);
IanBenzMaxim 8:5ea891c7d1a1 92 if (!result) {
IanBenzMaxim 8:5ea891c7d1a1 93 return result.error();
IanBenzMaxim 7:9cd16581b578 94 }
IanBenzMaxim 7:9cd16581b578 95
IanBenzMaxim 7:9cd16581b578 96 // Wait for device to process.
IanBenzMaxim 7:9cd16581b578 97 sleep->invoke(delayTime);
IanBenzMaxim 7:9cd16581b578 98
IanBenzMaxim 7:9cd16581b578 99 // Read response.
IanBenzMaxim 7:9cd16581b578 100 result = master->setLevel(OneWireMaster::NormalLevel);
IanBenzMaxim 8:5ea891c7d1a1 101 if (!result) {
IanBenzMaxim 8:5ea891c7d1a1 102 return result.error();
IanBenzMaxim 7:9cd16581b578 103 }
IanBenzMaxim 7:9cd16581b578 104 result = master->readBlock(xpcBuffer);
IanBenzMaxim 8:5ea891c7d1a1 105 if (!result) {
IanBenzMaxim 8:5ea891c7d1a1 106 return result.error();
IanBenzMaxim 7:9cd16581b578 107 }
IanBenzMaxim 7:9cd16581b578 108 if (xpcBuffer[1] > response.size()) {
IanBenzMaxim 8:5ea891c7d1a1 109 return InvalidResponseError;
IanBenzMaxim 7:9cd16581b578 110 }
IanBenzMaxim 7:9cd16581b578 111 response = response.first(xpcBuffer[1]);
IanBenzMaxim 7:9cd16581b578 112 result = master->readBlock(response);
IanBenzMaxim 8:5ea891c7d1a1 113 if (!result) {
IanBenzMaxim 8:5ea891c7d1a1 114 return result.error();
IanBenzMaxim 7:9cd16581b578 115 }
IanBenzMaxim 7:9cd16581b578 116 expectedCrc =
IanBenzMaxim 7:9cd16581b578 117 calculateCrc16(calculateCrc16(make_span(xpcBuffer + 1, 1)), response) ^
IanBenzMaxim 10:947d3f44e0a0 118 0xFFFF;
IanBenzMaxim 7:9cd16581b578 119 result = master->readBlock(xpcBuffer);
IanBenzMaxim 8:5ea891c7d1a1 120 if (!result) {
IanBenzMaxim 8:5ea891c7d1a1 121 return result.error();
IanBenzMaxim 7:9cd16581b578 122 }
IanBenzMaxim 7:9cd16581b578 123 if (expectedCrc !=
IanBenzMaxim 7:9cd16581b578 124 ((static_cast<uint_fast16_t>(xpcBuffer[1]) << 8) | xpcBuffer[0])) {
IanBenzMaxim 8:5ea891c7d1a1 125 return CrcError;
IanBenzMaxim 7:9cd16581b578 126 }
IanBenzMaxim 8:5ea891c7d1a1 127 return response;
IanBenzMaxim 7:9cd16581b578 128 }
IanBenzMaxim 7:9cd16581b578 129
IanBenzMaxim 7:9cd16581b578 130 const error_category & RunCommandWithI2CMaster::errorCategory() {
IanBenzMaxim 7:9cd16581b578 131 static class : public error_category {
IanBenzMaxim 7:9cd16581b578 132 public:
IanBenzMaxim 11:3f3bf6bf5e6c 133 virtual const char * name() const {
IanBenzMaxim 11:3f3bf6bf5e6c 134 return "MaximInterfaceCore.RunCommandWithI2CMaster";
IanBenzMaxim 11:3f3bf6bf5e6c 135 }
IanBenzMaxim 7:9cd16581b578 136
IanBenzMaxim 7:9cd16581b578 137 virtual std::string message(int condition) const {
IanBenzMaxim 7:9cd16581b578 138 switch (condition) {
IanBenzMaxim 7:9cd16581b578 139 case InvalidResponseError:
IanBenzMaxim 7:9cd16581b578 140 return "Invalid Response Error";
IanBenzMaxim 7:9cd16581b578 141 }
IanBenzMaxim 7:9cd16581b578 142 return defaultErrorMessage(condition);
IanBenzMaxim 7:9cd16581b578 143 }
IanBenzMaxim 7:9cd16581b578 144 } instance;
IanBenzMaxim 7:9cd16581b578 145 return instance;
IanBenzMaxim 7:9cd16581b578 146 }
IanBenzMaxim 7:9cd16581b578 147
IanBenzMaxim 8:5ea891c7d1a1 148 Result<span<uint_least8_t> > RunCommandWithI2CMaster::
IanBenzMaxim 7:9cd16581b578 149 operator()(span<const uint_least8_t> request, int delayTime,
IanBenzMaxim 8:5ea891c7d1a1 150 span<uint_least8_t> response) const {
IanBenzMaxim 7:9cd16581b578 151 // Write request.
IanBenzMaxim 8:5ea891c7d1a1 152 Result<void> result = master->start(address_);
IanBenzMaxim 8:5ea891c7d1a1 153 if (!result && result.error() == make_error_condition(I2CMaster::NackError) &&
IanBenzMaxim 8:5ea891c7d1a1 154 address_ != 0) {
IanBenzMaxim 7:9cd16581b578 155 result = master->start(0);
IanBenzMaxim 7:9cd16581b578 156 }
IanBenzMaxim 8:5ea891c7d1a1 157 if (!result) {
IanBenzMaxim 7:9cd16581b578 158 master->stop();
IanBenzMaxim 8:5ea891c7d1a1 159 return result.error();
IanBenzMaxim 7:9cd16581b578 160 }
IanBenzMaxim 7:9cd16581b578 161 if (!request.empty()) {
IanBenzMaxim 7:9cd16581b578 162 result = master->writeByte(request[0]);
IanBenzMaxim 8:5ea891c7d1a1 163 if (!result) {
IanBenzMaxim 7:9cd16581b578 164 master->stop();
IanBenzMaxim 8:5ea891c7d1a1 165 return result.error();
IanBenzMaxim 7:9cd16581b578 166 }
IanBenzMaxim 7:9cd16581b578 167 request = request.subspan(1);
IanBenzMaxim 7:9cd16581b578 168 if (!request.empty()) {
IanBenzMaxim 7:9cd16581b578 169 result = master->writeByte(static_cast<uint_least8_t>(request.size()));
IanBenzMaxim 8:5ea891c7d1a1 170 if (!result) {
IanBenzMaxim 7:9cd16581b578 171 master->stop();
IanBenzMaxim 8:5ea891c7d1a1 172 return result.error();
IanBenzMaxim 7:9cd16581b578 173 }
IanBenzMaxim 7:9cd16581b578 174 result = master->writeBlock(request);
IanBenzMaxim 8:5ea891c7d1a1 175 if (!result) {
IanBenzMaxim 7:9cd16581b578 176 master->stop();
IanBenzMaxim 8:5ea891c7d1a1 177 return result.error();
IanBenzMaxim 7:9cd16581b578 178 }
IanBenzMaxim 7:9cd16581b578 179 }
IanBenzMaxim 7:9cd16581b578 180 }
IanBenzMaxim 7:9cd16581b578 181 result = master->stop();
IanBenzMaxim 8:5ea891c7d1a1 182 if (!result) {
IanBenzMaxim 8:5ea891c7d1a1 183 return result.error();
IanBenzMaxim 7:9cd16581b578 184 }
IanBenzMaxim 7:9cd16581b578 185
IanBenzMaxim 7:9cd16581b578 186 // Wait for device to process.
IanBenzMaxim 7:9cd16581b578 187 sleep->invoke(delayTime);
IanBenzMaxim 7:9cd16581b578 188
IanBenzMaxim 7:9cd16581b578 189 // Read response.
IanBenzMaxim 7:9cd16581b578 190 result = master->start(address_ | 1);
IanBenzMaxim 8:5ea891c7d1a1 191 if (!result) {
IanBenzMaxim 7:9cd16581b578 192 master->stop();
IanBenzMaxim 8:5ea891c7d1a1 193 return result.error();
IanBenzMaxim 7:9cd16581b578 194 }
IanBenzMaxim 7:9cd16581b578 195 uint_least8_t length;
IanBenzMaxim 8:5ea891c7d1a1 196 if (const Result<uint_least8_t> result = master->readByte(I2CMaster::Ack)) {
IanBenzMaxim 8:5ea891c7d1a1 197 length = result.value();
IanBenzMaxim 8:5ea891c7d1a1 198 } else {
IanBenzMaxim 7:9cd16581b578 199 master->stop();
IanBenzMaxim 8:5ea891c7d1a1 200 return result.error();
IanBenzMaxim 7:9cd16581b578 201 }
IanBenzMaxim 7:9cd16581b578 202 if (length > response.size()) {
IanBenzMaxim 7:9cd16581b578 203 master->stop();
IanBenzMaxim 8:5ea891c7d1a1 204 return InvalidResponseError;
IanBenzMaxim 7:9cd16581b578 205 }
IanBenzMaxim 7:9cd16581b578 206 response = response.first(length);
IanBenzMaxim 8:5ea891c7d1a1 207 result = master->readBlock(response, I2CMaster::Nack);
IanBenzMaxim 8:5ea891c7d1a1 208 if (!result) {
IanBenzMaxim 7:9cd16581b578 209 master->stop();
IanBenzMaxim 8:5ea891c7d1a1 210 return result.error();
IanBenzMaxim 7:9cd16581b578 211 }
IanBenzMaxim 7:9cd16581b578 212 result = master->stop();
IanBenzMaxim 8:5ea891c7d1a1 213 if (!result) {
IanBenzMaxim 8:5ea891c7d1a1 214 return result.error();
IanBenzMaxim 8:5ea891c7d1a1 215 }
IanBenzMaxim 8:5ea891c7d1a1 216 return response;
IanBenzMaxim 7:9cd16581b578 217 }
IanBenzMaxim 7:9cd16581b578 218
IanBenzMaxim 7:9cd16581b578 219 } // namespace MaximInterfaceCore