Re: gEDA-user: Heavy Symbols and such

["Alain M." <alainm@xxxxxxxxx>]

Hi, I am new to gEDA, but I used orcad+tango for many years.

I would like to suggest something in this light versus heavy library thread:

Could it be that when the user inserts a light symbol in the schematic, 
he also adds a "light" footprint (in the schematic editor) and from then 
on, it behaves just as a heavy component? It could be the ideal for many 
situations...

Alain

DJ Delorie escreveu:
> How?
> 
> My initial thought is something that builds a heavy library from a
> light one:
> 
> Input: light/*.sym
>        light/*.fp
> 
> mapping table:
>   sym | value | device | pinmap | newsym | other-attrs
>   fp  | value | device | pinmap | newfp  | other-attrs
> 
> Output: heavy/*.sym
>         heavy/*.fp
> 
> We need to be able to not only decide which light symbols/footprints
> to use, but also how to map the light pin numbers to the heavy ones.
> Ideally, the light/heavy symbols could co-exist, allowing parts to be
> "enlightened" (converted from heavy back to light) in order to switch
> parts, assuming the entities know what they "are".  This should also
> allow footprint switches without messing up pin numbers.
> 
> The tricky part is coming up with a clever database schema so that we
> can share lots of commonality among part families, while allowing the
> special cases.  Some sort of multi-field wildcard system, I suppose,
> using manufacturer part numbers (either some family name like 7404, or
> common name like 1N4001) for "device", and including
> manufacturer/partno columns.
> 
> The dull boring part is filling in all that information.
> 
> So, one clever perl script, and one giant SQL database, and we're
> done!
> 
> 
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> 
> 


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