New circuit: an arbitrary-precision counter.

- BOOKSHELF: added the C8051F320 (alias "f320")
- BOOKSHELF: added "atrf" alias for AT86RF230
- BOOKSHELF: added "f326" alias for C8051F326
- AUTHORS, components/INFO, components/c8051f320.lib,
  components/c8051f320.dcm: added Silabs C8051F320
- AUTHORS, modules/INFO, modules/Makefile, modules/qfp.fpd: added LQFP32
  for C8051F320
- cntr/cntr.pro, cntr/cntr.sch, cntr/cntr.brd: arbitrary-precision counter

modules/INFO

@@ -37,6 +37,9 @@ F: qfn
 #
 N: sot617-3-lp
 
+# "Generic" simple QFP (for now, just for Silabs' C8051F320)
+F: qfp
+
 # Common 4-pin crystal SMT package (pins 1 and 4 are on a short side, pin
 # numbering is counter-clockwise)
 F: xtal-4

modules/Makefile

@@ -1,4 +1,4 @@
-MODULES=meander mini-usb pads qfn stdpass xtal-4
+MODULES=meander mini-usb pads qfn qfp stdpass xtal-4
 
 .SUFFIXES:	.fpd .mod
 .PHONY:		all clean

modules/qfp.fpd

@@ -0,0 +1,73 @@
+/* MACHINE-GENERATED ! */
+
+frame pad {
+	set px = (dx*X1+dy*Y1)/2
+
+	set py = (dy*X1+dx*Y1)/2
+
+	set pin = side*pins/4+i+1
+
+	__0: vec @(px, py)
+	__1: vec @(-px, -py)
+	pad "$pin" __0 .
+}
+
+frame side {
+	set pos = i-(pins/4-1)/2
+
+	loop i = 0, pins/4-1
+
+	__0: vec @(e*pos*dx, e*pos*dy)
+	frame pad .
+}
+
+frame pads {
+	table
+	    { side, dx, dy }
+	    { 0, 0, -1 }
+	    { 1, 1, 0 }
+	    { 2, 0, 1 }
+	    { 3, -1, 0 }
+
+	__0: vec @(dy*C1/2, -dx*C2/2)
+	frame side .
+}
+
+frame index {
+}
+
+frame outline {
+	set mx = D1/2
+
+	set my = E1/2
+
+	set cf = 0.8
+
+	set rf = (1-cf)/2
+
+	set r = mx*rf
+
+	__0: vec @(mx, my)
+	__1: vec @(-mx, -my)
+	rect . __0 w
+	__2: vec @(-mx*cf, my*cf)
+	__3: vec .(0mm, r)
+	circ __2 . w
+}
+
+package "$name"
+unit mm
+
+table
+    { name, pins, X1, Y1, e, C1, C2, D1, E1 }
+    { "LQFP32", 32, 0.55mm, 1.3mm, 0.8mm, 8.45mm, 8.45mm, 7mm, 7mm }
+
+set X2 = X1+(pins/4-1)*E
+
+set Y2 = X2
+
+set w = 5mil
+
+frame pads @
+frame outline @
+measy pad.__1 -> pad.__0 1mm