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Man Pages


Manual Reference Pages  -  GSCH2PCB (1)

NAME

gsch2pcb - Update PCB layouts from gEDA/gaf schematics

CONTENTS

Synopsis
Description
Options
Project Files
Environment
Authors
Copyright
See Also

SYNOPSIS

gsch2pcb [OPTION ...] {PROJECT | FILE ...}

DESCRIPTION

gsch2pcb is a frontend to gnetlist(1) which aids in creating and updating pcb(1) printed circuit board layouts based on a set of electronic schematics created with gschem(1).

Instead of specifying all options and input gEDA schematic FILEs on the command line, gsch2pcb can use a PROJECT file instead.

gsch2pcb first runs gnetlist(1) with the ‘PCB’ backend to create a ‘<name>.net’ file containing a pcb(1) formatted netlist for the design.

The second step is to run gnetlist(1) again with the ‘gsch2pcb’ backend to find any M4(1) elements required by the schematics. Any missing elements are found by searching a set of file element directories. If no ‘<name>.pcb’ file exists for the design yet, it is created with the required elements; otherwise, any new elements are output to a ‘<name>.new.pcb’ file.

If a ‘<name>.pcb’ file exists, it is searched for elements with a non-empty element name with no matching schematic symbol. These elements are removed from the ‘<name>.pcb’ file, with a backup in a ‘<name>.pcb.bak’ file.

Finally, gnetlist(1) is run a third time with the ‘pcbpins’ backend to create a ‘<name>.cmd’ file. This can be loaded into pcb(1) to rename all pin names in the PCB layout to match the schematic.

OPTIONS

-o, --output-name=BASENAME
  Use output filenames ‘BASENAME.net’, ‘BASENAME.pcb’, and ‘BASENAME.new.pcb’. By default, the basename of the first schematic file in the list of input files is used.
-d, --elements-dir=DIRECTORY
  Add DIRECTORY to the list of directories to search for PCB file elements. By default, the following directories are searched if they exist: ‘./packages’, ‘/usr/local/share/pcb/newlib’, ‘/usr/share/pcb/newlib’, ‘/usr/local/lib/pcb_lib’, ‘/usr/lib/pcb_lib’, ‘/usr/local/pcb_lib’.
-f, --use-files
  Force use of file elements in preference to elements generated with M4(1).
-s, --skip-m4
  Disable element generation using M4(1) entirely.
--m4-file FILE
  Use the M4(1) file FILE in addition to the default M4 files ‘./pcb.inc’ and ‘~/.pcb/pcb.inc’.
--m4-pcbdir DIRECTORY
  Set DIRECTORY as the directory where gsch2pcb should look for M4(1) files installed by pcb(1).
-r, --remove-unfound
  Don’t include references to unfound elements in the generated ‘.pcb’ files. Use if you want pcb(1) to be able to load the (incomplete) ‘.pcb’ file. This is enabled by default.
-k, --keep-unfound
  Keep include references to unfound elements in the generated ‘.pcb’ files. Use if you want to hand edit or otherwise preprocess the generated ‘.pcb’ file before running pcb(1).
-p, --preserve
  Preserve elements in PCB files which are not found in the schematics. Since elements with an empty element name (schematic "refdes") are never deleted, this option is rarely useful.
--gnetlist BACKEND
  In addition to the default backends, run gnetlist(1) with ‘-g BACKEND’, with output to ‘<name>.BACKEND’.
--gnetlist-arg ARG
  Pass ARG as an additional argument to gnetlist(1).
--empty-footprint NAME
  If NAME is not ‘none’, gsch2pcb will not add elements for components with that name to the PCB file. Note that if the omitted components have net connections, they will still appear in the netlist and pcb(1) will warn that they are missing.
--fix-elements
  If a schematic component’s ‘footprint’ attribute is not equal to the ‘Description’ of the corresponding PCB element, update the ‘Description’ instead of replacing the element.
-q, --quiet
  Don’t output information on steps to take after running gsch2pcb.
-v, --verbose
  Output extra debugging information. This option can be specified twice (‘-v -v’) to obtain additional debugging for file elements.
-h, --help
  Print a help message.
-V, --version
  Print gsch2pcb version information.

PROJECT FILES

A gsch2pcb project file is a file (not ending in ‘.sch’) containing a list of schematics to process and some options. Any long-form command line option can appear in the project file with the leading ‘--’ removed, with the exception of ‘--gnetlist-arg’, ‘--fix-elements’, ‘--verbose’, and ‘--version’. Schematics should be listed on a line beginning with ‘schematics’.

An example project file might look like:

        schematics partA.sch partB.sch
        output-name design


ENVIRONMENT

GNETLIST specifies the gnetlist(1) program to run. The default is ‘gnetlist’.

AUTHORS

See the ‘AUTHORS’ file included with this program.

COPYRIGHT

Copyright © 1999-2011 gEDA Contributors.  License GPLv2+: GNU GPL
version 2 or later.  Please see the ‘COPYING’ file included with this
program for full details.

This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

gschem(1), gnetlist(1), pcb(1)
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gEDA Project GSCH2PCB (1) September 25th, 2013

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