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julia interface to LTspice

Home Page: http://www.chrisstook.com/LTspice.jl/stable/

License: Other

Julia 76.39% AGS Script 22.95% CSS 0.10% JavaScript 0.31% Batchfile 0.26%

ltspice.jl's Introduction

LTspice.jl

LTspice.jl provides a julia interface to LTspice^TM. Several interfaces are provided.

A dictionary like interface to access parameters and measurements by name.
An array interface, which is primarily for measurements of stepped simulations.
Simulations can be called like functions.

Documentation

Installation

LTspice.jl is currently unregistered. It can be installed using Pkg.clone.

Pkg.clone("https://github.com/cstook/LTspice.jl.git")

The julia documentation section on installing unregistered packages provides more information.

LTspice.jl is compatible with julia 1.0

Example 1

Import the module.

using LTspice

Create an instance of LTspiceSimulation.

example1 = LTspiceSimulation("example1.asc",tempdir=true)

Access parameters and measurements using their name as the key.

Set a parameter to a new value.

example1["Rload"] = 20.0  # set parameter Rload to 20.0

Read the resulting measurement.

loadpower = example1["Pload"] # run simulation, return Pload

Circuit can be called like a function

loadpower = example1(100.0)  # pass Rload, return Pload

Use Optim.jl to perform an optimization on a LTspice simulation

using Optim
result = optimize(rload -> -example1(rload)[1],10.0,100.0)
rload_for_maximum_power = example1["Rload"]

Supported Platforms

LTspice.jl works on windows and linux with LTspice under wine. Osx is not supported.

Additional Information

Latest documentation is here.

Introduction to LTspice.jl

The Linear Technology^TM website

The LTspice Yahoo Group

ltspice.jl's People

Contributors

Stargazers

Watchers

Forkers

judober sbutron standardgalactic

ltspice.jl's Issues

basic example fails

Using linux + wine + LTspice

Same error on 1.1.1. All examples from within spice work fine. Any ideas?

Support for .MEAS AC simulations

It seems that measuring ac analysis isn't (well or at all) supported. For example, a simple LRC circuit's .asc file is below:
Version 4
SHEET 1 1020 680
WIRE 80 48 -48 48
WIRE 144 48 80 48
WIRE 256 48 224 48
WIRE 256 80 256 48
WIRE 256 208 256 144
WIRE -48 272 -48 48
WIRE 256 288 256 272
WIRE 256 304 256 288
FLAG 256 304 0
FLAG -48 352 0
FLAG 80 128 0
DATAFLAG 32 48 ""
DATAFLAG 256 176 ""
DATAFLAG -48 224 ""
SYMBOL res -64 256 R0
SYMATTR InstName R2
SYMATTR Value 2
SYMBOL voltage 256 192 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 0
SYMATTR Value2 AC 1
SYMATTR InstName V2
SYMATTR Value 1
SYMBOL cap 240 80 R0
SYMATTR InstName C1
SYMATTR Value 100m
SYMBOL ind 64 32 R0
SYMATTR InstName L1
SYMATTR Value {LVal}
SYMBOL res 240 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1m
TEXT 328 136 Left 2 !.op
TEXT 472 104 Left 2 !.ac lin 1000 1 100
TEXT 456 152 Left 2 !.param LVal = .01\n.meas AC IOut FIND mag(I(R1)) AT 10

This cannot be solved and the error message is:

Byte sequence 0xb0292061742031300d0a0a0a446174653a204d6f6e204a756c2031392032313a35323a313220323032310a546f74616c20656c61707365642074696d653a20302e343439207365636f6e64732e0a0a746e6f6d203d2032370a74656d70203d2032 is invalid in source encoding or cannot be represented in target encoding
in top-level scope at LTSpiceJL_Test.jl:5
in at LTspice\YKMNe\src\LTspiceSimulation.jl:361
in measurementvalues at LTspice\YKMNe\src\LTspiceSimulation.jl:153
in run! at LTspice\YKMNe\src\LTspiceSimulation.jl:406
in run! at LTspice\YKMNe\src\LTspiceSimulation.jl:417
in parselog! at LTspice\YKMNe\src\ParseLogFile.jl:160
in open at base\io.jl:323
....

How to read transient measurement voltages?

I am trying to read voltages from a transient simulation. I tried a naïve approach and defined '.meas Vout V(Vo)' but it did not work... How to accomplish this?

OSX support

Is there anything that can be done to support OSX? The README says that it's unsupported, and while I can read LTSpice files, simulation causes Julia to hang until interrupted.

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