--- /dev/null
+#!/usr/bin/python2
+# Copyright 2021 by Bdale Garbee <bdale@gag.com>. GPLv3
+#
+# Emit PCB footprint for RGZ0048A package used by TI CC1310 with RGZT suffix
+#
+
+# dimensions in mm from the ti/cc1310/cc1310.pdf datasheet
+
+PinWidth = 0.24
+PinResist = 0.38 # width of gap in solder resist over pad
+PinHeight = 0.6
+PinSpacing = 0.50
+Overall = 6.80
+GndSquare = 5.15
+GndSquareMask = 5.41
+PasteSquare = 1.06 # paste spots over ground tab
+PasteGrid = 1.26
+ViaDrill = 0.254 # mfg spec is 0.2, >= 10 mil AC standard spec
+ViaPadSize = 0.5
+CoreViaSpacing = 1.26
+SideViaSpacing = 1.065
+
+import sys
+
+# we're going to use the 1/100 of a mil fundamental unit form
+def mm2mils100( mm ):
+ return int( mm / 25.4 * 1000.0 * 100.0 + 0.5 )
+
+print '# author: Bdale Garbee'
+print '# email: bdale@gag.com'
+print '# dist-license: GPL 3'
+print '# use-license: unlimited'
+
+print 'Element[0x0 "QFN48" "" "" 0 0 0 0 0 100 0x0]'
+print "("
+
+# pad under the chip, must be grounded
+print ' Pad[',\
+ mm2mils100(0), \
+ mm2mils100(0), \
+ mm2mils100(0), \
+ mm2mils100(0), \
+ mm2mils100(GndSquare), \
+ 0, \
+ mm2mils100(GndSquareMask), \
+ '"pin49" "49" "square,nopaste"]'
+
+# vias in the ground pad under the chip
+for viarow in range (-1,2):
+ # outer rows
+ print ' Pin[',\
+ mm2mils100(-CoreViaSpacing - SideViaSpacing), \
+ mm2mils100(viarow * CoreViaSpacing), \
+ mm2mils100(ViaPadSize), \
+ mm2mils100(ViaPadSize), \
+ 0, \
+ mm2mils100(ViaDrill), \
+ '"pin49" "49" 0x0002]'
+
+ print ' Pin[',\
+ mm2mils100(CoreViaSpacing + SideViaSpacing), \
+ mm2mils100(viarow * CoreViaSpacing), \
+ mm2mils100(ViaPadSize), \
+ mm2mils100(ViaPadSize), \
+ 0, \
+ mm2mils100(ViaDrill), \
+ '"pin49" "49" 0x0002]'
+
+ print ' Pin[',\
+ mm2mils100(viarow * CoreViaSpacing), \
+ mm2mils100(-CoreViaSpacing - SideViaSpacing), \
+ mm2mils100(ViaPadSize), \
+ mm2mils100(ViaPadSize), \
+ 0, \
+ mm2mils100(ViaDrill), \
+ '"pin49" "49" 0x0002]'
+
+ print ' Pin[',\
+ mm2mils100(viarow * CoreViaSpacing), \
+ mm2mils100(CoreViaSpacing + SideViaSpacing), \
+ mm2mils100(ViaPadSize), \
+ mm2mils100(ViaPadSize), \
+ 0, \
+ mm2mils100(ViaDrill), \
+ '"pin49" "49" 0x0002]'
+
+ # center array
+ for viacol in range (-1,2):
+ print ' Pin[',\
+ mm2mils100(viacol * CoreViaSpacing), \
+ mm2mils100(viarow * CoreViaSpacing), \
+ mm2mils100(ViaPadSize), \
+ mm2mils100(ViaPadSize), \
+ 0, \
+ mm2mils100(ViaDrill), \
+ '"pin49" "49" 0x0002]'
+
+# solder paste squares in a grid on central ground pad
+for pasterow in range (-2, 2):
+ for pastecol in range (-2, 2):
+ print ' Pad[',\
+ mm2mils100(pastecol * PasteGrid + PasteGrid/2), \
+ mm2mils100(pasterow * PasteGrid + PasteGrid/2), \
+ mm2mils100(pastecol * PasteGrid + PasteGrid/2), \
+ mm2mils100(pasterow * PasteGrid + PasteGrid/2), \
+ mm2mils100((PasteSquare)), \
+ 0, \
+ mm2mils100((PasteSquare)), \
+ '"pin49" "49" "square"]'
+
+# pins
+for pin in range (1,13):
+ print ' Pad[',\
+ mm2mils100(-3.25 + pin * PinSpacing), \
+ mm2mils100(-Overall/2 - PinHeight/2 + PinWidth/2), \
+ mm2mils100(-3.25 + pin * PinSpacing), \
+ mm2mils100(-Overall/2 + PinHeight/2 - PinWidth/2), \
+ mm2mils100(PinWidth), \
+ mm2mils100(PinSpacing - PinWidth), \
+ mm2mils100(PinResist), \
+ '"pin%i"' % (37-pin), '"%i"' % (37-pin), '"square"]'
+
+ print ' Pad[',\
+ mm2mils100(-3.25 + pin * PinSpacing), \
+ mm2mils100(+Overall/2 - PinHeight/2 + PinWidth/2), \
+ mm2mils100(-3.25 + pin * PinSpacing), \
+ mm2mils100(+Overall/2 + PinHeight/2 - PinWidth/2), \
+ mm2mils100(PinWidth), \
+ mm2mils100(PinSpacing - PinWidth), \
+ mm2mils100(PinResist), \
+ '"pin%i"' % pin, '"%i"' % pin, '"square"]'
+
+ print ' Pad[',\
+ mm2mils100(Overall/2 - PinHeight/2 + PinWidth/2), \
+ mm2mils100(-3.25 + pin * PinSpacing), \
+ mm2mils100(Overall/2 + PinHeight/2 - PinWidth/2), \
+ mm2mils100(-3.25 + pin * PinSpacing), \
+ mm2mils100(PinWidth), \
+ mm2mils100(PinSpacing - PinWidth), \
+ mm2mils100(PinResist), \
+ '"pin%i"' % (25-pin), '"%i"' % (25-pin), '"square"]'
+
+ print ' Pad[',\
+ mm2mils100(-Overall/2 - PinHeight/2 + PinWidth/2), \
+ mm2mils100(-3.25 + pin * PinSpacing), \
+ mm2mils100(-Overall/2 + PinHeight/2 - PinWidth/2), \
+ mm2mils100(-3.25 + pin * PinSpacing), \
+ mm2mils100(PinWidth), \
+ mm2mils100(PinSpacing - PinWidth), \
+ mm2mils100(PinResist), \
+ '"pin%i"' % (36+pin), '"%i"' % (36+pin), '"square"]'
+
+print ' ElementArc[',\
+ mm2mils100(-3.6), \
+ mm2mils100(3.6), \
+ '500 500 0 360 1000 ]'
+print ")"