kicad-developers team mailing list archive
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Re: First patch for --plot in eeschema
Fri, 04 Dec 2009 11:22:53 +0100
Thunderbird 184.108.40.206 (Windows/20090812)
Damien Profeta a écrit :
> Plot files from a command file is a *very* complex problem in some
> cases, mainly in complex hierarchies.
> Currently, this is possible only for the root sheet.
> When loading others sheets, the eeschema configuration and the project
> library cache cannot be loaded because sub hierarchy files do not store
> the root file name (i.e. the project name)
> (the default config kicad.pro) file will be loaded
> (so some libraries coud be not loaded and some component could be
> (This could be easily fixed by adding this info in all files)
> Note : currently the schematic files store the list of libraries, but do
> not really use this info (but do not store specific libraries paths).
> But the main problem is when using complex hierarchies: in this case, a
> given file is used more than once in shematic.
> The component reference depends on the sheet is opened in schematic, and
> this file handles more than one reference by component.
> The way to reach a given instance of the shared sheet can be seen like a
> In this case we only load the full hierarchy and plot all sheets (they
> are more than files).
> If loading the shared file, more than one plot must be created (as many
> plot as existing paths)
> So to be able to plot schematic files from a command line could be an
> important work that also involves some (but minor) modifications in
> files formats.
> Jean-Pierre CHARRAS
> Maître de conférences
> Directeur d'études 2ieme année.
> Génie Electrique et Informatique Industrielle 2
> Institut Universitaire de Technologie 1 de Grenoble
> BP 67, 38402 St Martin d'Heres Cedex
First thank you for the answer.
I have more questions about that :
- I understand (or almost undertand) that is quite complicated to get
all the sheets to plot from a subhierarchy eeschema file. But I don't
really see the difference between the command line and directly in the
interface. If I try to open a subhierarchy files, I have the same
problem. For me, it is another functionality. Did I miss something?
Yes, if you open a subhierarchy eeschema file, you have the same problem.
But this is not the right way to work on a project.
Usually, first you load the root file (and therefore all subsheets and
libraries), and after you plot a sub hierarchy sheet,
so there is no problem to plot this sheet, because the whole project is
Moreover, in a complex hierarchy, if you do not load the root sheet
(i.e. the full project),
you can have a broken schematic project.
I do not have a "free" schematic project using a complex hierarchy (only
- Do you have an example of complex hierarchies? (especially one file
more than one time) I tried to look at demos directory but did not
I'll try to create a demo.
If you want to learn the internal code of Kicad, this is a good way, and
you can continue.
- I was trying to find an "easy" development to start contribution to
kicad, but looks like I got a bad one. Do you think I should continue
on it, or maybe you have another idea? I had a look at feature request
but they all looks quite complicated to start with.
If you want to contribute on some more easier (to code) topics, in
Gerbview there are some *very* interesting features to add:
- Mainly the ability to load and show the EXCELLON drill files (this is
the most important feature to add)
Excellon files formats are near from Gerber files formats.
- A way to selected the order of displayed layers, and what layers are
displayed ( enabling/disabling layers )
- An export gerber file command (for instance after loaded gerber files
were edited or combined ).
Thanks for your help.
Maître de conférences
Directeur d'études 2ieme année.
Génie Electrique et Informatique Industrielle 2
Institut Universitaire de Technologie 1 de Grenoble
BP 67, 38402 St Martin d'Heres Cedex
GIPSA-LAB - INPG
Rue de la Houille Blanche
38400 Saint Martin d'Heres