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‎src/SpiceSharpParser.IntegrationTests/Examples/Circuits/MosfetExample3.cir‎

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Mosfet circuit
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Md 0 1 2 3 my-pmos
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.model my-pmos.1 pmos(level = 49 lmin=0.18u)
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.model my-pmos.2 pmos(level = 49 lmin=1.18u)
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.END

‎src/SpiceSharpParser.IntegrationTests/Examples/Extensions/Aggregate.cs‎

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using SpiceSharp.Components;
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using SpiceSharp.Entities;
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using SpiceSharp.Simulations;
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using System.Collections.Generic;
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using System.Xml.Linq;
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public class BSIM3AggregateModel : Entity
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{
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/// <summary>
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/// Gets the models in the aggregate model based on sizes.
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/// </summary>
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public HashSet<BSIM3Model> Models { get; } = [];
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/// <summary>
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/// Creates an aggregate model.
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/// </summary>
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/// <param name="name">The name.</param>
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public BSIM3AggregateModel(string name)
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: base(name)
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{
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}
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/// <summary>
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/// Creates an aggregate model based on sizes.
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/// </summary>
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/// <param name="name"></param>
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/// <param name="models"></param>
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public BSIM3AggregateModel(string name, IEnumerable<BSIM3Model> models)
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: base(name)
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{
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foreach (var model in models)
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Models.Add(model);
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}
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public override void CreateBehaviors(ISimulation simulation)
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{
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throw new System.NotImplementedException();
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}
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/// <inheritdoc />
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public override IEntity Clone()
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{
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var n = new BSIM3AggregateModel(Name);
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foreach (var model in Models)
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n.Models.Add((BSIM3Model)model.Clone());
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return n;
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}
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}

‎src/SpiceSharpParser.IntegrationTests/Examples/Extensions/ComplexMosfetModelGenerator.cs‎

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using SpiceSharp.Components;
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using SpiceSharpParser.Common.Validation;
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using SpiceSharpParser.ModelReaders.Netlist.Spice.Context;
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using SpiceSharpParser.ModelReaders.Netlist.Spice.Context.Models;
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using SpiceSharpParser.Models.Netlist.Spice.Objects;
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using SpiceSharpParser.Models.Netlist.Spice.Objects.Parameters;
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using System;
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namespace SpiceSharpParser.ModelReaders.Netlist.Spice.Readers.EntityGenerators.Models
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{
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public class ComplexMosfetModelGenerator : MosfetModelGenerator, ICustomModelGenerator
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{
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public ComplexMosfetModelGenerator()
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{
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}
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public Context.Models.Model Process(Context.Models.Model model, IModelsRegistry models)
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{
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if (model.Entity is BSIM3Model bsim3Model)
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{
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if (model.Name.Contains("."))
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{
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var aggregateName = bsim3Model.Name.Substring(0, bsim3Model.Name.IndexOf('.'));
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var aggregate = models.FindModel(aggregateName);
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if (aggregate != null)
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{
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var aggrategeEntity = aggregate.Entity as BSIM3AggregateModel;
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aggrategeEntity.Models.Add(bsim3Model);
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return aggregate;
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}
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else
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{
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var aggrategeEntity = new BSIM3AggregateModel(aggregateName);
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aggrategeEntity.Models.Add(bsim3Model);
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return new Context.Models.Model(aggregateName, aggrategeEntity, null);
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}
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}
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}
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return model;
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}
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public override void AddGenericLevel<TModel, TParameters>(int level)
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{
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base.AddGenericLevel<TModel, TParameters>(level);
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}
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public override void AddLevel<TModel, TParameters>(int level)
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{
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Levels[level] = (name, type, _) =>
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{
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var mosfet = (TModel)Activator.CreateInstance(typeof(TModel), name);
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switch (type.ToLower())
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{
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case "nmos": mosfet.SetParameter("nmos", true); break;
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case "pmos": mosfet.SetParameter("pmos", true); break;
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}
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return new Context.Models.Model(name, mosfet, mosfet.Parameters);
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};
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}
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public override Context.Models.Model Generate(string id, string type, ParameterCollection parameters, IReadingContext context)
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{
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var clonedParameters = (ParameterCollection)parameters.Clone();
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int level = 1;
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string version = null;
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int lindex = -1, vindex = -1;
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for (int i = 0; i < clonedParameters.Count; i++)
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{
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if (clonedParameters[i] is AssignmentParameter ap)
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{
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if (ap.Name.ToLower() == "level")
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{
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lindex = i;
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level = (int)Math.Round(context.Evaluator.EvaluateDouble(ap.Value));
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}
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if (ap.Name.ToLower() == "version")
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{
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vindex = i;
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version = ap.Value.ToLower();
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}
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if (vindex >= 0 && lindex >= 0)
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{
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break;
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}
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}
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}
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if (lindex >= 0)
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{
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clonedParameters.RemoveAt(lindex);
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}
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if (vindex >= 0)
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{
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clonedParameters.RemoveAt(vindex < lindex ? vindex : vindex - 1);
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}
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// Generate the model
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Context.Models.Model model;
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if (Levels.ContainsKey(level))
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{
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model = Levels[level].Invoke(id, type, version);
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}
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else
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{
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context.Result.ValidationResult.AddError(ValidationEntrySource.Reader, $"Unknown mosfet model level {level}", parameters.LineInfo);
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return null;
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}
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// Read all the parameters
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SetParameters(context, model.Entity, clonedParameters);
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return model;
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}
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}
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}

‎src/SpiceSharpParser.IntegrationTests/Examples/Extensions/CustomMosfetModelTest.cs‎

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spiceSharpReader.Settings.Mappings.Components.Map("M", mosfetGenerator);
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var spiceSharpModel = spiceSharpReader.Read(parseResult.FinalModel);
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Assert.False(spiceSharpModel.ValidationResult.HasError);
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Assert.False(spiceSharpModel.ValidationResult.HasWarning);
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}
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[Fact]
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public void When_BSIM3_Used_NoExceptions()
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{
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// Create a model from text file
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string path = Path.Combine(Directory.GetCurrentDirectory(), "Examples/Circuits/MosfetExample3.cir");
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var netlistContent = File.ReadAllText(path);
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var parser = new SpiceNetlistParser();
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parser.Settings.Lexing.HasTitle = true;
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var parseResult = parser.ParseNetlist(netlistContent);
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// Convert to Spice#
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var spiceSharpReader = new SpiceSharpReader();
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spiceSharpReader.Settings.CaseSensitivity.IsModelTypeCaseSensitive = false;
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// custom mosfet models
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var modelGenerator = new ComplexMosfetModelGenerator();
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modelGenerator.AddGenericLevel<BSIM3Model, SpiceSharpBSIM.Components.Semiconductors.BSIM.BSIM3Behaviors.ModelParameters>(49);
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spiceSharpReader.Settings.Mappings.Models.Map(new[] { "PMOS", "NMOS" }, modelGenerator);
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var mosfetGenerator = new MosfetGenerator();
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mosfetGenerator.AddMosfet<SpiceSharp.Components.Mosfet3Model, SpiceSharp.Components.Mosfet3>();
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spiceSharpReader.Settings.Mappings.Components.Map("M", mosfetGenerator);
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var spiceSharpModel = spiceSharpReader.Read(parseResult.FinalModel);
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Assert.False(spiceSharpModel.ValidationResult.HasError);

‎src/SpiceSharpParser.IntegrationTests/SpiceSharpParser.IntegrationTests.csproj‎

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<None Update="Examples\Circuits\Example04_reversed.cir">
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<CopyToOutputDirectory>Always</CopyToOutputDirectory>
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</None>
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<None Update="Examples\Circuits\MosfetExample3.cir">
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<CopyToOutputDirectory>Always</CopyToOutputDirectory>
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</None>
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<None Update="Examples\Circuits\MosfetExample2.cir">
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<CopyToOutputDirectory>Always</CopyToOutputDirectory>
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</None>

‎src/SpiceSharpParser/ModelReaders/Netlist/Spice/Readers/EntityGenerators/IModelGenerator.cs‎

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{
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Model Generate(string id, string type, SpiceSharpParser.Models.Netlist.Spice.Objects.ParameterCollection parameters, IReadingContext context);
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}
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public interface ICustomModelGenerator : IModelGenerator
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{
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Context.Models.Model Process(Context.Models.Model model, IModelsRegistry models);
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}
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}

‎src/SpiceSharpParser/ModelReaders/Netlist/Spice/Readers/EntityGenerators/StochasticModelsGenerator.cs‎

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RegisterDevAndLotModels(parameters, stochasticModelRegistry, model, (modelId) =>
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{
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var stochasticCandidate = modelGenerator.Generate(modelId, type, filteredParameters, context);
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context.ModelsRegistry.RegisterModelInstance(stochasticCandidate);
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return stochasticCandidate;
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if (modelGenerator is ICustomModelGenerator custom)
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{
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var model = custom.Process(stochasticCandidate, context.ModelsRegistry);
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context.ModelsRegistry.RegisterModelInstance(model);
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return model;
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}
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else
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{
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context.ModelsRegistry.RegisterModelInstance(stochasticCandidate);
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return stochasticCandidate;
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}
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});
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return model;
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}

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