kicad/eeschema/sim/sim_model_tline.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2022 Mikolaj Wielgus
* Copyright (C) 2022 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* https://www.gnu.org/licenses/gpl-3.0.html
* or you may search the http://www.gnu.org website for the version 3 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <sim/sim_model_tline.h>
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#include <fmt/core.h>
using PARAM = SIM_MODEL::PARAM;
std::string SPICE_GENERATOR_TLINE::ModelLine( const SPICE_ITEM& aItem ) const
{
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std::string r, l, g, c, len;
switch( m_model.GetType() )
{
case SIM_MODEL::TYPE::TLINE_Z0:
{
auto z0 = static_cast<const SIM_VALUE_FLOAT&>( *m_model.FindParam( "z0" )->value );
auto td = static_cast<const SIM_VALUE_FLOAT&>( *m_model.FindParam( "td" )->value );
if( !z0.HasValue() || !td.HasValue() )
return fmt::format( ".model {} LTRA()\n", aItem.modelName );
r = SIM_VALUE_FLOAT( 0 ).ToSpiceString();
l = ( td * z0 ).ToSpiceString();
g = SIM_VALUE_FLOAT( 0 ).ToSpiceString();
c = ( td / z0 ).ToSpiceString();
len = SIM_VALUE_FLOAT( 1 ).ToSpiceString();
break;
}
case SIM_MODEL::TYPE::TLINE_RLGC:
r = m_model.FindParam( "r" )->value->ToSpiceString();
l = m_model.FindParam( "l" )->value->ToSpiceString();
g = m_model.FindParam( "g" )->value->ToSpiceString();
c = m_model.FindParam( "c" )->value->ToSpiceString();
len = m_model.FindParam( "len" )->value->ToSpiceString();
break;
default:
wxFAIL_MSG( "Unhandled SIM_MODEL type in SIM_MODEL_TLINE" );
return "";
}
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return fmt::format( ".model {} LTRA( r={} l={} g={} c={} len={} )\n",
aItem.modelName, r, l, g, c, len );
}
SIM_MODEL_TLINE::SIM_MODEL_TLINE( TYPE aType ) :
SIM_MODEL( aType, std::make_unique<SPICE_GENERATOR_TLINE>( *this ) )
{
static std::vector<PARAM::INFO> z0 = makeZ0ParamInfos();
static std::vector<PARAM::INFO> rlgc = makeRlgcParamInfos();
switch( aType )
{
case TYPE::TLINE_Z0:
for( const PARAM::INFO& paramInfo : z0 )
AddParam( paramInfo );
break;
case TYPE::TLINE_RLGC:
for( const PARAM::INFO& paramInfo : rlgc )
AddParam( paramInfo );
break;
default:
wxFAIL_MSG( "Unhandled SIM_MODEL type in SIM_MODEL_TLINE" );
break;
}
}
std::vector<PARAM::INFO> SIM_MODEL_TLINE::makeZ0ParamInfos()
{
std::vector<PARAM::INFO> paramInfos;
PARAM::INFO paramInfo = {};
paramInfo.name = "z0";
paramInfo.type = SIM_VALUE::TYPE_FLOAT;
paramInfo.unit = "Ω";
paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
paramInfo.defaultValue = "";
paramInfo.description = "Characteristic impedance";
paramInfo.isSpiceInstanceParam = false;
paramInfo.isInstanceParam = true;
paramInfos.push_back( paramInfo );
paramInfo.name = "td";
paramInfo.type = SIM_VALUE::TYPE_FLOAT;
paramInfo.unit = "s";
paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
paramInfo.defaultValue = "";
paramInfo.description = "Transmission delay";
paramInfo.isSpiceInstanceParam = false;
paramInfo.isInstanceParam = true;
paramInfos.push_back( paramInfo );
return paramInfos;
}
std::vector<PARAM::INFO> SIM_MODEL_TLINE::makeRlgcParamInfos()
{
std::vector<PARAM::INFO> paramInfos;
PARAM::INFO paramInfo = {};
paramInfo.name = "len";
paramInfo.type = SIM_VALUE::TYPE_FLOAT;
paramInfo.unit = "m";
paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
paramInfo.defaultValue = "";
paramInfo.description = "Length";
paramInfo.isSpiceInstanceParam = false;
paramInfo.isInstanceParam = true;
paramInfos.push_back( paramInfo );
paramInfo.name = "r";
paramInfo.type = SIM_VALUE::TYPE_FLOAT;
paramInfo.unit = "Ω/m";
paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
paramInfo.defaultValue = "0";
paramInfo.description = "Resistance per length";
paramInfo.isSpiceInstanceParam = false;
paramInfo.isInstanceParam = false;
paramInfos.push_back( paramInfo );
paramInfo.name = "l";
paramInfo.type = SIM_VALUE::TYPE_FLOAT;
paramInfo.unit = "H/m";
paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
paramInfo.defaultValue = "0";
paramInfo.description = "Inductance per length";
paramInfo.isSpiceInstanceParam = false;
paramInfo.isInstanceParam = false;
paramInfos.push_back( paramInfo );
paramInfo.name = "g";
paramInfo.type = SIM_VALUE::TYPE_FLOAT;
paramInfo.unit = "1/(Ω m)";
paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
paramInfo.defaultValue = "0";
paramInfo.description = "Conductance per length";
paramInfo.isSpiceInstanceParam = false;
paramInfo.isInstanceParam = false;
paramInfos.push_back( paramInfo );
paramInfo.name = "c";
paramInfo.type = SIM_VALUE::TYPE_FLOAT;
paramInfo.unit = "C/m";
paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
paramInfo.defaultValue = "0";
paramInfo.description = "Capacitance per length";
paramInfo.isSpiceInstanceParam = false;
paramInfo.isInstanceParam = false;
paramInfos.push_back( paramInfo );
return paramInfos;
}