RE: How should I add a component model for Eagle-LTSpice combo?

anonymous_engineer_8hflg — Fri, 05 Feb 2016 03:12:46 GMT

I have kept my ULP changes as minimal as possibly (basically just fixing the if statement that objects to having 0 tagged pins when there are 0 pins to tag).

I will look at the webinar video later when I have the time.

RE: How should I add a component model for Eagle-LTSpice combo?

autodeskguest — Mon, 01 Feb 2016 17:33:35 GMT

On 1/30/2016 8:55 PM, Anonymous Engineer wrote:

I am trying to use the Eagle-LTSpice "Integration" to simulate a
circuit, and this obviously means adding models for most components not
made by LTC.

However the process is far from obvious, with too many arbitrary failure
modes to get things working. Problems encountered so far:

Hi Anonymous Eng,

You've definitely dived head first into the ULP and I applaud you for

that. However you've probably made a lot of changes that would make the

complete recipe non-functional.

You are correct in stating that documentation is practically

non-existing and needs to be improved. Currently the complete recipe is

only available in this webinar we did a while back.

https://www.youtube.com/watch?v=PBEHUw7BhTs

As you've already discovered the integration is very fragile because

many assumptions are made about where things are stored, so any

deviation here requires modifications in the ULP.

As you've also already discovered ULPs are blocking so as long as

LTSpice is open EAGLE is basically frozen. Changing that is going to be

a lot of work for the devs but we recognize it's something that needs to

be addressed along with having ULPs being able to interact with the mouse.

Finally, the EAGLE-LTSpice bridge rely's on their being correspondence

between LTSpice libraries and EAGLE libraries in order to move from one

program to the other. An there are a few additional functions in the ULP

to simply achieving that correspondence.

The video should help clear things up, but feel free to contact us if

you continue to run into issues.

hth,

Jorge Garcia