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Overview

NgSpice is an open-sourced electronics circuit simulation engine based on the venerable SPICE simulator developed and maintained at UC Berkeley during the 80s and 90s. It is the industry standard: to this day, SPICE simulation models are what vendors provide along their discreet device offerings.

This is a work in progress. Use at your own risk.

Known memory safety issues:

Type implementing PkSpiceManager moving in memory after calling init will crash once a callback is called.

Commanding bg_run creates a new thread

The following functions exposed by the API still need to be implemented

ngSpice_Init

ngSpice_Init_Sync

ngSpice_Command

ngGet_Vec_Info

ngCM_Input_Path

ngGet_Evt_NodeInfo

ngSpice_AllEvtNodes

ngSpice_Init_Evt

ngSpice_Circ

ngSpice_CurPlot

ngSpice_AllPlots

ngSpice_AllVecs

ngSpice_running

ngSpice_SetBkpt

Installation

Obtain the appropriate sharedspice lib from here. Sharedspice.dll for windows can be downloaded directly from the webpage. It is also available through homebrew. Linux binding is not tested.

The example code in main.rs and tests/lib.rs show how to specify the sharedspice path.

Explanation

Compiling main.rs produces a simple command line program which passes messages between the user and NgSpice's command call. stdout, stderr, and stats are color coded. If you see something like this please open an issue detailing how to reproduce it.

Both main.rs and tests/lib.rs contain simple examples of how a manager may be implemented.

Contribute

Any contribution is welcome.

sharedspice source code specifies that its memory are not to be freed by the calling program.

Callbacks may be called from a different thread and thus need to consider thread safety.

Resources

NgSpice Beginner Tutorial

NgSpice Manual

Other Bindings

Rust

NyanCAD NgSpice bindings (Incomplete, no documentations nor code comments. ngspice-sys on crates.io)

elektron_ngspice (Incomplete, no documentations nor code comments. elektron_ngspice on crates.io. Almost identical to NyanCAD above)

Others

KiCad NgSpice Binding (cpp)

PySpice NgSpice Binding (Python)

Some existing NgSpice based simulators can be found here

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