Re: gEDA: some observations/experiences with geda as a simulationfrontend

[Steve Tell <tell-at-NOSPAMtelltronics_dot_org>]

On Mon, 24 Mar 2003 mcmahill@mtl.mit.edu wrote:

> - is there a way in the gnetlistrc to specify a search path for scheme
>   files?  I just copied all the share/gEDA/scheme/* files to a local
>   directory and used the (scheme-directory) function to point there while
>   working on gnet-switcap.scm.  It might be nice to have a search path
>   which included multiple directories.

In guile, the search path is the scheme list %load-path, but gnetlist
normally seems to load files directly instead of searching the path.

Playing around, adding directories to GUILE_LOAD_PATH in the environment
and running gnetlist with a perverse command line like this works despite
a warning about being unable to find gnet-myspice in the usual directory:

gnetlist -c '(load-from-path "gnet-mynet.scm")' -g mynet -o out.net f1.sch 

But that's definitely non-standard!

(appending to %load-path in gnetlistrc doesn't work; apparently -c options
are run before getlistrc is read).


> - this last one is probably a much bigger task, but it might be nice to be
>   able to use scheme to create some sort of GUI for setting up analyses.
>   I've been trying to finish up the switcap support by adding some symbols
>   which will cause an analysis statement in the netlist.  The problem is
>   its a bit cumbersome to deal with all the possible options you might
>   want.  For the current system, I'll probably just have an include file
>   element where you can have it insert a text file with the analysis
>   commands.
 
If you have guile-gtk installed, it seems to work fine from within
gnetlist.  At least pasting from the examples into a gnetlist backend
works fine.

Thanks for giving me an excuse to play around with it: next I want to try
writing some guile-gtk gschem extensions.  After only a little
schematic-drawing, I really want a "sequence text" command like Design
Architect, but it will require a gui fragment for options.

Steve

 

--
Steve Tell  tell@telltronics.org