From 309d0462641717f2f842ea99f0a749256ae4d404 Mon Sep 17 00:00:00 2001
From: Fredrik Thulin <fredrik@thulin.net>
Date: Thu, 26 Apr 2018 11:12:18 +0200
Subject: Set footprints in the schematics from the PCB.

---
 convert.sh                 |  5 ++-
 set-footprints-from-pcb.py | 77 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 81 insertions(+), 1 deletion(-)
 create mode 100755 set-footprints-from-pcb.py

diff --git a/convert.sh b/convert.sh
index f808bef..ca8bc25 100755
--- a/convert.sh
+++ b/convert.sh
@@ -43,7 +43,7 @@ cd ..
 
 rm -rf "${kicaddir}"
 mkdir "${kicaddir}"
-git checkout "${kicaddir}"/GerberOutput
+git checkout "${kicaddir}"/{GerberOutput,footprints.pretty,fp-lib-table}
 cp ${altiumdir}/*.{sch,lib} "${kicaddir}"/
 rm ${kicaddir}/rev02*-cache.lib
 cp ${altiumdir}/CrypTech-PcbDoc.kicad_pcb "${kicaddir}/Cryptech Alpha.kicad_pcb"
@@ -97,6 +97,9 @@ ls Cryptech*Alpha.lib rev02*sch | while read file; do
     sed -i -e "s#I/SN#I_SN#g" "${file}"
 done
 
+# Set all schematic footprints from the PCB
+../set-footprints-from-pcb.py Cryptech?Alpha.kicad_pcb *.sch
+
 # Make further modifications to the layout using KiCAD's Python bindings
 test -d ../tmp || mkdir ../tmp
 cp "Cryptech Alpha.kicad_pcb" "../tmp/Cryptech Alpha.kicad_pcb.a2k-out"
diff --git a/set-footprints-from-pcb.py b/set-footprints-from-pcb.py
new file mode 100755
index 0000000..ad0683b
--- /dev/null
+++ b/set-footprints-from-pcb.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python
+
+"""
+Set all schematic footprints from the PCB file, where the components footprints
+are known. The footprints were exported once from the PCB using the menu option
+
+  File -> Archive Footprints -> Create New Library and Archive Footprints
+
+and the fp-lib-table was set up to map the name 'Cryptech_Alpha_Footprints' to
+the archive directory (rev03-KiCad/footprints.pretty).
+"""
+
+import os
+import sys
+import pprint
+
+import pcbnew
+
+def add_footprints(fn_in, fn_out, comp):
+    in_ = open(fn_in)
+    out = open(fn_out, 'w')
+    curr = None
+    c = 0
+    print('Adding footprints to {}'.format(fn_in))
+    for line in in_.readlines():
+        c += 1
+        if line.startswith('L '):
+            curr = line.split(' ')[-1]
+            while curr[-1] == '\n':
+                curr = curr[:-1]
+        if line.startswith('F 2 ""'):
+            if curr in comp:
+                fp = comp[curr]
+                line = 'F 2 "Cryptech_Alpha_Footprints:{}{}'.format(fp, line[5:])
+                if line.endswith('0000 C CNN\n'):
+                    # don't show the footprint in the schematics
+                    line = line[:-8] + '1' + line[-7:]
+                #print('{}: line {} {} fp {}'.format(fn_in, c, curr, fp))
+            else:
+                if not curr.startswith('#PWR'):
+                    sys.stderr.write('Footprint for {} not known\n'.format(curr))
+        out.write(line)
+    return True
+
+def main(pcb, schemas):
+    print("Loading PCB '{}'".format(pcb))
+    board = pcbnew.LoadBoard(pcb)
+    comp = {}
+    for mod in board.GetModules():
+        ref = mod.GetReference()
+        fp = mod.GetFPID().GetLibItemName()
+        if ref in comp:
+            sys.stderr.write('{} already in comp ({} -> {})!\n'.format(ref, comp[ref], fp))
+        comp[ref] = str(fp)
+
+    #print(pprint.pformat(comp))
+
+    for this in schemas:
+        if add_footprints(this, this + '.tmp', comp):
+            os.rename(this + '.tmp', this)
+
+    return True
+
+
+if __name__ == '__main__':
+    try:
+        if len(sys.argv) == 0:
+            sys.stderr.write('Syntax: set-footprints-from-pcb.py *.kicad_pcb *.sch\n')
+            sys.exit(1)
+        pcb = [x for x in sys.argv if x.endswith('.kicad_pcb')][0]
+        schemas = [x for x in sys.argv if x.endswith('.sch')]
+        res = main(pcb, schemas)
+        if res:
+            sys.exit(0)
+        sys.exit(1)
+    except KeyboardInterrupt:
+        pass
-- 
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