Spice interface

[tapegoji]

@devbisme

Do you have any plans for the spice interface?

PySpice has not been active for a long time. Ngspice has improved significantly but PySpice can't work with newer versions of ngspice.

I plan yo work on this for a project I am working on I'd love to align my goal with SKiDL road map.

Let me know

[devbisme]

Ngspice has improved significantly but PySpice can't work with newer versions of ngspice.

I wasn't aware of this. I have ngspice version 34 installed and my unit tests work with that. I wasn't aware current versions of ngspice were drifting into incompatibility.

I plan yo work on this for a project I am working on I'd love to align my goal with SKiDL road map.

There is no roadmap. What is your plan for the SPICE interface? It would be nice if any new interface presents minimal changes to SKiDL users.

[tapegoji]

One idea is to use ngspice shared library (libngspice.so) directly, rather than relying on PySpice interface. I think that is what KiCAD is using as well. There need to be some schematic only components which KiCAD has the symbols already.

One issue might be the use of sub-circuits. When generating netlist SKiDL can generate a flatten spice netlist from the circuit and then send it to ngspice. This has not impact on the simulation because ngspice flattens the sub-circuits when it parses netlist.

[tapegoji]

I am hesitant to make to it to be used with only SKiDL as it has potential. I was thinking of maintaining it for now.
I was thinking of something like PySpice2. if Fabrice comes back, we can integrated back to the main PySpice, hopefully.

[devbisme]

If you have the time, energy, and desire to keep maintaining it, then that's great! Once you have it established on PyPi, I can change the setup.py file to include your PySpice package as a requirement.

The choice of a name is up to you, but I'm not that hot on PySpice2. What if you keep working on it and your major release bumps up to 3? Then you'll have weirdness like "I'm using PySpice2 version 3.1."

I used Grok to generate some names. You could do the same. But as I said, the choice is up to you. You're going to be the one doing all the work!

[tapegoji]

Dave,
I have some ideas that I want to discuss with you regarding this. perhaps a chat will be better if you are open to it. Let me know and I can send you an invite. I am in Denver time zone and 7 AM usually works for me.

[devbisme]

I work 60 hours a week tending to a toddler. I'm wiped. Asynchronous communications work best for me. You can send an email to me at [email protected] and we can see where that leads. I'll be interested in what you have to say.

[tapegoji]

send you an email from innovoltive.com email. sometimes it might to go the spam folder. it's a new company so it's not well recognized by spam filters.