Extended MaximInterface
Dependents: mbed_DS28EC20_GPIO
Links/RunCommand.cpp
- Committer:
- reARMnimator
- Date:
- 2019-04-03
- Revision:
- 8:211d1b8f730c
- Parent:
- 6:a8c83a2e6fa4
File content as of revision 8:211d1b8f730c:
/******************************************************************************* * Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name of Maxim Integrated * Products, Inc. shall not be used except as stated in the Maxim Integrated * Products, Inc. Branding Policy. * * The mere transfer of this software does not imply any licenses * of trade secrets, proprietary technology, copyrights, patents, * trademarks, maskwork rights, or any other form of intellectual * property whatsoever. Maxim Integrated Products, Inc. retains all * ownership rights. *******************************************************************************/ #include <MaximInterface/Utilities/crc.hpp> #include <MaximInterface/Utilities/Error.hpp> #include "I2CMaster.hpp" #include "OneWireMaster.hpp" #include "Sleep.hpp" #include "RunCommand.hpp" namespace MaximInterface { const error_category & RunCommandWithOneWireMaster::errorCategory() { static class : public error_category { public: virtual const char * name() const { return "RunCommandWithOneWireMaster"; } virtual std::string message(int condition) const { switch (condition) { case CrcError: return "CRC Error"; case InvalidResponseError: return "Invalid Response Error"; } return defaultErrorMessage(condition); } } instance; return instance; } error_code RunCommandWithOneWireMaster:: operator()(span<const uint_least8_t> command, int delayTime, span<uint_least8_t> & response) const { // Write command. error_code result = selectRom(*master); if (result) { return result; } uint_least8_t xpcBuffer[2] = {0x66, static_cast<uint_least8_t>(command.size())}; result = master->writeBlock(xpcBuffer); if (result) { return result; } result = master->writeBlock(command); if (result) { return result; } uint_fast16_t expectedCrc = calculateCrc16(command, calculateCrc16(xpcBuffer)) ^ 0xFFFFU; result = master->readBlock(xpcBuffer); if (result) { return result; } if (expectedCrc != ((static_cast<uint_fast16_t>(xpcBuffer[1]) << 8) | xpcBuffer[0])) { return make_error_code(CrcError); } result = master->writeBytePower(0xAA); if (result) { return result; } // Wait for device to process. sleep->invoke(delayTime); // Read response. result = master->setLevel(OneWireMaster::NormalLevel); if (result) { return result; } result = master->readBlock(xpcBuffer); if (result) { return result; } if (xpcBuffer[1] > response.size()) { return make_error_code(InvalidResponseError); } response = response.first(xpcBuffer[1]); result = master->readBlock(response); if (result) { return result; } expectedCrc = calculateCrc16(response, calculateCrc16(make_span(xpcBuffer + 1, 1))) ^ 0xFFFFU; result = master->readBlock(xpcBuffer); if (result) { return result; } if (expectedCrc != ((static_cast<uint_fast16_t>(xpcBuffer[1]) << 8) | xpcBuffer[0])) { return make_error_code(CrcError); } return result; } const error_category & RunCommandWithI2CMaster::errorCategory() { static class : public error_category { public: virtual const char * name() const { return "RunCommandWithI2CMaster"; } virtual std::string message(int condition) const { switch (condition) { case InvalidResponseError: return "Invalid Response Error"; } return defaultErrorMessage(condition); } } instance; return instance; } error_code RunCommandWithI2CMaster:: operator()(span<const uint_least8_t> command, int delayTime, span<uint_least8_t> & response) const { // Write command. error_code result = master->start(address_); if (result == make_error_condition(I2CMaster::NackError) && address_ != 0) { result = master->start(0); } if (result) { master->stop(); return result; } if (!command.empty()) { result = master->writeByte(command[0]); if (result) { master->stop(); return result; } command = command.subspan(1); if (!command.empty()) { result = master->writeByte(command.size()); if (result) { master->stop(); return result; } result = master->writeBlock(command); if (result) { master->stop(); return result; } } } result = master->stop(); if (result) { return result; } // Wait for device to process. sleep->invoke(delayTime); // Read response. result = master->start(address_ | 1); if (result) { master->stop(); return result; } uint_least8_t length; result = master->readByte(I2CMaster::Ack, length); if (result) { master->stop(); return result; } if (length > response.size()) { master->stop(); return make_error_code(InvalidResponseError); } response = response.first(length); result = master->readBlock(I2CMaster::Nack, response); if (result) { master->stop(); return result; } result = master->stop(); return result; } } // namespace MaximInterface