bb/pcb.py

   1 #!env python
   2 # Created:20080516
   3 # By Jeff Connelly
   4 #
   5 # Run chip mapper/PADS-PCB tool suite
   6 #
   7 import os, sys
   8
   9 if len(sys.argv) < 2:
  10     print "usage: %s circuit-name" % (sys.argv[0])
  11     print
  12     print "Where circuit-name is an LTspice circuit name, which reads"
  13     print "../circuits/<circuit-name>.net. The extension need not be "
  14     print "given. To generate this file in LTspice, SPICE Netlist."
  15     print
  16     print "Output file is a .pads PADS-PCB netlist, you can import into"
  17     print "FreePCB or other PCB layout programs."
  18     raise SystemExit
  19
  20 name = sys.argv[1]
  21 if "." in name:
  22     print "You don't need to specify an extension. Try again."
  23     raise SystemExit
  24 netfile = "../circuits/%s.net" % (name,)
  25 if not os.access(netfile, os.R_OK):
  26     print "No such file: %s" % (netfile,)
  27     if os.access("../circuits/%s.asc" % (name,), os.R_OK):
  28         print "But the corresponding .asc file exists."
  29         print "To generate .net, in LTspice go to: View -> SPICE Netlist."
  30     raise SystemExit
  31 if os.access("../circuit/%s.asy" % (name,), os.R_OK):
  32     print "Warning! A corresponding symbol exists for this circuit!"
  33     print "Are you sure it is the right circuit? Generally, PCBs should be"
  34     print "made from *_test.asc files, not the components they test, so that"
  35     print "power is supplied."
  36     raise SystemExit
  37
  38 print "Found netlist: %s" % (netfile,)
  39
  40 if "-q" not in sys.argv:
  41     # Get parameters on the circuit, to help with unique identifiers,
  42     # so multiple circuits can easily be merged.
  43     print "\nConfiguration Questions (to skip, pass -q next time)\n"
  44     try:
  45         os.environ["JC_CHIP_START"] = str(int(raw_input("Start chip numbering at: ")))
  46     except ValueError:
  47         print "(Using default)"
  48
  49     try:
  50         os.environ["JC_RESISTOR_SERIAL_START"] = str(int(raw_input("Start resistor numbering at: ")))
  51     except ValueError:
  52         print "(Using default)"
  53
  54     try:
  55         os.environ["JC_NETNAME_SUFFIX"] = raw_input("Netname suffix: ")
  56     except ValueError:
  57         print "(Using default)"
  58
  59     try:
  60         os.environ["JC_USE_RESISTOR_CHIP"] = str(int(raw_input("Use resistor network or discrete resistors? (1=network, 0=discrete) ")))
  61     except ValueError:
  62         print "(Using default)"
  63
  64 # Copy here so files are saved locally, in 'bb' instead of 'circuits'
  65 code = os.system("cp -v %s ." % (netfile,))
  66 if code != 0:
  67     print "Failed to copy netlist to current directory! Something is wrong."
  68     raise SystemExit
  69 code = os.system("python bb.py %s.net -p" % (name,))
  70 if code != 0:
  71     print "Failed!, see errors above. Exit code: %d" % (code,)
  72     raise SystemExit
  73
  74 if os.access("%s.pads" % (name,), os.R_OK):
  75     print "Your PADS-PCB netlist file is now available at %s.pads for importing into FreePCB." % (name,)
  76 else:
  77     print "Seems there was a problem generating %s.pads." % (name,)