From 5b7cc3edb6083f68575c8823e34056b8c65e26ac Mon Sep 17 00:00:00 2001
From: Werner Almesberger <werner@openmoko.org>
Date: Wed, 2 Feb 2011 21:42:37 -0300
Subject: [PATCH] ubb/cam: CAM process for cutting the PCB, now with
 parametrized "mkmk"

---
 ubb/cam/Makefile | 22 ++++++++++++
 ubb/cam/mkmk     | 92 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 114 insertions(+)
 create mode 100644 ubb/cam/Makefile
 create mode 100755 ubb/cam/mkmk

diff --git a/ubb/cam/Makefile b/ubb/cam/Makefile
new file mode 100644
index 0000000..0e956f9
--- /dev/null
+++ b/ubb/cam/Makefile
@@ -0,0 +1,22 @@
+NAME=ubb
+
+BOARD = X0=8.0mm Y0=8.1mm
+FAB = X=0 Y=0 XN=1 YN=5
+
+.PHONY:			all clean
+
+all:			Makefile.mkmk
+
+Makefile.mkmk:		mkmk ../$(NAME).drl ../$(NAME)-PCB_Edges.gbr
+			./mkmk NAME=$(NAME) $(BOARD) $(FAB)
+
+../$(NAME).drl:		../$(NAME).brd
+			pcbnew --drill `pwd`/../$(NAME).brd
+
+../$(NAME)-PCB_Edges.gbr: ../$(NAME).brd
+			pcbnew --plot=gerber -l PCB_Edges `pwd`/../$(NAME).brd
+
+-include Makefile.mkmk
+
+clean::
+			rm -f Makefile.mkmk
diff --git a/ubb/cam/mkmk b/ubb/cam/mkmk
new file mode 100755
index 0000000..531c05c
--- /dev/null
+++ b/ubb/cam/mkmk
@@ -0,0 +1,92 @@
+#!/bin/sh
+PATH=$PATH:/home/qi/cae-tools/cameo
+PATH=$PATH:/home/moko/svn.openmoko.org/developers/werner/cncmap/gp2rml
+
+while [ "$1" ]; do
+    eval "$1"
+    shift
+done
+
+if ! [ "$NAME" ]; then
+    echo "NAME is required" 1>&2
+    exit 1
+fi
+: ${X0:=0} ${Y0:=0}
+: ${X:=0} ${Y:=0}
+: ${XN:=1} ${YN:=1}
+
+
+
+write=write
+yi=0
+while [ $yi -lt $YN ]; do
+    xi=0
+    while [ $xi -lt $XN ]; do
+
+	cameo <<EOF
+mm
+
+gerber 35mil ../$NAME-PCB_Edges.gbr
+align 1 $X0 $Y0		# align relative to board corner
+translate 4mm 4mm	# move to PCB zone assigned to project
+array +3mm +3mm `expr $X + $xi` `expr $Y + $yi`
+z 0 -58.9mm		# board surface (tool fully retracted)
+z 1.5mm			# slack for extending the tool
+z -0.8mm		# board thickness
+z -0.5mm		# tool extra depth
+clear
+
+excellon ../$NAME.drl
+drill 7mil 15mil	# 12.5-13.5 mil drill
+optimize
+$write drill.gp
+
+remainder
+mill 25mil 0.01mm	# 35 mil endmill; pretend it is a little smaller,
+			# to compensate for tool/board deflections
+$write mill.gp
+
+remainder
+empty
+
+gerber 45mil ../$NAME-PCB_Edges.gbr	# 35 mil endmill, -10 mil deflection
+offset
+append mill.gp
+EOF
+
+	write=append
+	xi=`expr $xi + 1`
+    done
+    yi=`expr $yi + 1`
+done
+
+gp2rml 2 0.5 0.5 mill.gp >mill.rml
+gp2rml 2 0.1 0.5 drill.gp >drill.rml
+
+
+cat <<EOF >Makefile.mkmk
+SPOOL=/home/moko/svn.openmoko.org/developers/werner/cncmap/spool/spool
+CNGT=/home/qi/cae-tools/cngt/cngt
+
+.PHONY:		mill drill cng plot dplot
+
+mill:
+		PORT=/dev/ttyUSB0 \$(SPOOL) mill.rml
+
+drill:
+		PORT=/dev/ttyUSB0 \$(SPOOL) drill.rml
+
+cng:
+		\$(CNGT) -57.4 20 mill.gp
+
+plot:
+		echo 'plot "drill.gp" with points, "mill.gp" with lines' | \\
+		  gnuplot -persist
+
+dplot:
+		echo 'plot "< sed /^\$\$/d drill.gp" with linespoints' | \\
+		  gnuplot -persist
+
+clean::
+		rm -f mill.gp mill.rml drill.gp drill.rml
+EOF