xorn/src/backend/gnet_allegro.py

   1 # gaf.netlist - gEDA Netlist Extraction and Generation
   2 # Copyright (C) 1998-2010 Ales Hvezda
   3 # Copyright (C) 1998-2010 gEDA Contributors (see ChangeLog for details)
   4 # Copyright (C) 2013-2020 Roland Lutz
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software Foundation,
  18 # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19
  20 # Allegro netlist format
  21
  22 import errno, os, sys
  23
  24 def open_and_check(device):
  25     try:
  26         os.mkdir('devfiles')
  27     except OSError as e:
  28         mkdir_error = e
  29     else:
  30         mkdir_error = None
  31
  32     try:
  33         f = open('devfiles/%s.txt' % device.lower(), 'w')
  34     except IOError as e:
  35         if e.errno == errno.ENOENT and mkdir_error is not None:
  36             sys.stderr.write("%s\n" % mkdir_error)
  37         else:
  38             sys.stderr.write("%s\n" % e)
  39         sys.stderr.write("The device files are expected to be "
  40                          "in the 'devfiles' directory.\n")
  41         sys.exit(3)
  42
  43     return f
  44
  45 def output_netlist(f, package):
  46     f.write('(Device File generated by gEDA Allegro Netlister)\n')
  47     f.write('PACKAGE %s\n' % package.get_attribute('footprint', 'unknown'))
  48     f.write('CLASS %s\n' % package.get_attribute('class', 'unknown'))
  49     f.write('PINCOUNT %s\n' % package.get_attribute('pins', 'unknown'))
  50     altfoot = package.get_attribute('alt_foot', None)
  51     if altfoot is not None:
  52         f.write('PACKAGEPROP   ALT_SYMBOLS\n')
  53         f.write("'(%s)'\n" % altfoot)
  54     f.write('END\n')
  55
  56 def get_component_text(package, default):
  57     try:
  58         return package.get_attribute('value')
  59     except KeyError:
  60         try:
  61             return package.get_attribute('label')
  62         except KeyError:
  63             return package.get_attribute('device', default)
  64
  65 def run(f, netlist):
  66     f.write('(Allegro netlister by M. Ettus)\n')
  67
  68     f.write('$PACKAGES\n')
  69     for package in reversed(netlist.packages):
  70         footprint = package.get_attribute('footprint', None)
  71         if footprint is not None:
  72             f.write(footprint)
  73         f.write('! %s! %s; %s\n' % (package.get_attribute('device', 'unknown'),
  74                                     get_component_text(package, 'unknown'),
  75                                     package.refdes))
  76
  77     f.write('$NETS\n')
  78     for net in reversed(netlist.nets):
  79         f.write(net.name)
  80         f.write(';')
  81         f.write(',\n'.join(' %s.%s' % (pin.package.refdes, pin.number)
  82                            for pin in reversed(net.connections)) + '\n')
  83
  84     f.write('$END\n')
  85
  86     # write device files
  87     done = []
  88     for package in reversed(netlist.packages):
  89         device = package.get_attribute('device', 'unknown')
  90         if device in done:
  91             continue
  92
  93         if f is sys.stdout:
  94             output_netlist(f, package)
  95         else:
  96             g = open_and_check(device)
  97             try:
  98                 output_netlist(g, package)
  99             finally:
 100                 g.close()