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
Diff: MaximInterfaceDevices/DS2413.cpp
- Revision:
- 7:9cd16581b578
- Child:
- 8:5ea891c7d1a1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MaximInterfaceDevices/DS2413.cpp Mon Jul 22 11:44:07 2019 -0500 @@ -0,0 +1,126 @@ +/******************************************************************************* +* Copyright (C) 2017 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 <MaximInterfaceCore/Error.hpp> +#include <MaximInterfaceCore/OneWireMaster.hpp> +#include "DS2413.hpp" + +namespace MaximInterfaceDevices { + +using namespace Core; + +error_code DS2413::readStatus(Status & status) const { + uint_least8_t val; + const error_code result = pioAccessRead(val); + if (!result) { + status = val; + } + return result; +} + +error_code DS2413::writeOutputState(bool pioAState, bool pioBState) { + uint_least8_t val = 0xFC; + if (pioAState) { + val |= 0x1; + } + if (pioBState) { + val |= 0x2; + } + return pioAccessWrite(val); +} + +error_code DS2413::pioAccessRead(uint_least8_t & val) const { + error_code result = selectRom(*master); + if (!result) { + result = master->writeByte(0xF5); + if (!result) { + result = master->readByte(val); + if (!result && (val != ((val ^ 0xF0) >> 4))) { + result = make_error_code(CommunicationError); + } + } + } + return result; +} + +error_code DS2413::pioAccessWrite(uint_least8_t val) { + error_code result = selectRom(*master); + if (!result) { + uint_least8_t block[] = {0x5A, val, static_cast<uint_least8_t>(val ^ 0xFF)}; + result = master->writeBlock(block); + if (!result) { + result = master->readByte(block[0]); + if (!result && block[0] != 0xAA) { + result = make_error_code(CommunicationError); + } + } + } + return result; +} + +const error_category & DS2413::errorCategory() { + static class : public error_category { + public: + virtual const char * name() const { return "DS2413"; } + + virtual std::string message(int condition) const { + switch (condition) { + case CommunicationError: + return "Communication Error"; + } + return defaultErrorMessage(condition); + } + } instance; + return instance; +} + +error_code writePioAOutputState(DS2413 & ds2413, bool pioAState) { + DS2413::Status status; + error_code result = ds2413.readStatus(status); + if (!result && pioAState != status[DS2413::PioAOutputState]) { + result = + ds2413.writeOutputState(pioAState, status[DS2413::PioBOutputState]); + } + return result; +} + +error_code writePioBOutputState(DS2413 & ds2413, bool pioBState) { + DS2413::Status status; + error_code result = ds2413.readStatus(status); + if (!result && pioBState != status[DS2413::PioBOutputState]) { + result = + ds2413.writeOutputState(status[DS2413::PioAOutputState], pioBState); + } + return result; +} + +} // namespace MaximInterfaceDevices