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https://github.com/MaSzyna-EU07/maszyna.git
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Hirek193
7cb6f789f5
Adds the transport-independent core of the MaSzyna Hardware Protocol v2: COBS framing with a CRC32C protected 24 byte header, bounds checked payload readers and writers, and a resynchronising stream decoder. The shared TrainState registry describes simulator state in engineering units with per-value quality, the command registry generates the command namespace from Commands_descriptions, and the symbol registry merges both into the public, name-addressed hardware api.
97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
/*
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This Source Code Form is subject to the
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terms of the Mozilla Public License, v.
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2.0. If a copy of the MPL was not
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distributed with this file, You can
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obtain one at
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http://mozilla.org/MPL/2.0/.
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*/
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#include "stdafx.h"
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#include "hardware/registry/command_registry.h"
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namespace hardware
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{
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namespace
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{
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struct command_metadata
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{
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char const *name;
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bool continuous;
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std::optional<double> minimum;
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std::optional<double> maximum;
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};
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// hardware metadata for the commands which carry an analogue value; everything else is an event command
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command_metadata const continuous_commands[] = {
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{ "mastercontrollerset", true, 0.0, std::nullopt },
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{ "secondcontrollerset", true, 0.0, std::nullopt },
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{ "jointcontrollerset", true, 0.0, std::nullopt },
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{ "trainbrakeset", true, 0.0, 1.0 },
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{ "independentbrakeset", true, 0.0, 1.0 },
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{ "dynamicbrakecontrollerset", true, 0.0, 1.0 },
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{ "radiovolumeset", true, 0.0, 1.0 },
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{ "radiochannelset", true, 1.0, 15.0 }
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};
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} // anonymous namespace
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command_registry const &command_registry::instance()
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{
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static command_registry const registry;
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return registry;
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}
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command_descriptor const *command_registry::find( std::string const &Name ) const
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{
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auto const lookup = m_index.find( Name );
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return ( lookup != m_index.end() ? &m_entries[ lookup->second ] : nullptr );
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}
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command_registry::command_registry()
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{
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std::size_t commandid = 0;
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for( auto const &description : simulation::Commands_descriptions )
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{
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command_descriptor descriptor;
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descriptor.name = description.name;
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descriptor.command = static_cast<user_command>( commandid );
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m_index.emplace( descriptor.name, m_entries.size() );
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m_entries.emplace_back( std::move( descriptor ) );
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++commandid;
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}
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for( auto const &metadata : continuous_commands )
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{
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auto const lookup = m_index.find( metadata.name );
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if( lookup == m_index.end() )
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{
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continue;
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}
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auto &descriptor = m_entries[ lookup->second ];
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descriptor.continuous = metadata.continuous;
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descriptor.minimum = metadata.minimum;
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descriptor.maximum = metadata.maximum;
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}
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// protocol level alias: master controller driven with a 0...1 fraction of its range, the way
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// uart v1 does it in percentage mode. it maps onto the regular mastercontrollerset command
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auto const mastercontroller = m_index.find( "mastercontrollerset" );
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if( mastercontroller != m_index.end() )
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{
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command_descriptor descriptor;
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descriptor.name = "mastercontrollersetpercent";
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descriptor.command = m_entries[ mastercontroller->second ].command;
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descriptor.continuous = true;
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descriptor.minimum = 0.0;
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descriptor.maximum = 1.0;
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descriptor.transform = command_transform::mastercontroller_percent;
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m_index.emplace( descriptor.name, m_entries.size() );
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m_entries.emplace_back( std::move( descriptor ) );
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}
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}
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} // namespace hardware
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