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Date: | Thu, 9 Jul 2015 22:23:31 +0000 |
Message-ID: | <CAM2RGhQeuHcZdBkk7=dYA274TLEXrOYDYKZhw-y3HfibbqCMMQ@mail.gmail.com> |
Subject: | Re: [geda-user] Back annotation |
From: | "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> |
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On 7/9/15, Evan Foss <evanfoss AT gmail DOT com> wrote: > On 7/9/15, DJ Delorie <dj AT delorie DOT com> wrote: >> >>> #3 is certainly growing on me. I find myself dealing with multiple >>> layout contractors, and one of them wants footprint names like >>> "BGA484C100P22X22_2300X2300X260". I don't think those belong in the >>> schematics, and the others are happy with "BGA484". So, it's a >>> flow-dependent mapping. >> >> That idea was a side-effect of my "component database" blue-sky. We >> really >> want *three* main tools: >> >> * schematic capture (gschem) >> * mapping to a backend (netlister + component_db + project_ruleset) >> * backend (pcb/sim/etc) >> >> The mapping would map symbolic information (pins A,B,Y, value, etc) to >> physical information (package-specific pinouts, simulation models, >> etc) based on whatever relevent local rules apply. Most of this info >> is what's back-annotated anyway, but the backend can provide its >> as-built data to the netlister on the fly, to merge with new schematic >> info. >> >> It's also a solution to the transistor problem, because the >> information that's moved out of the schematic is the same information >> that causes the problem in the first place. >> >> And by swapping the db/rules you get to target different backends with >> the same schematics. >> >> One of the "backends" could be an annotated as-built schematic set too >> :-) >> >> /me wonders how this will work with heriarchical "symbols" feeding >> ruleset attributes to subcircuits... > > How do you prompt the user for the information in a way that is not > painfully breaking their flow. > > Perhaps if you back-annotate while using subcircuits it should present > you with two options side by side? There are a lot of situations like this where I want something that uses a rendering of the schematic but not the ability to edit it. -- Home http://evanfoss.googlepages.com/ Work http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/
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