Add ufqfpn-28 package (4x4 mm)

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/packages/Makefile b/packages/Makefile
index 6a8d62920d5511214dbc99f43a930dd4f69c0bc0..a2f319f4326944b6ec86aa90d6f3187f8e4b03c8 100644 (file)
--- a/packages/Makefile
+++ b/packages/Makefile
@@ -73,7 +73,8 @@ FOOTPRINTS= \
        DR127.fp \
        PowerPAD32.fp \
        usb_onboard.fp \
-       u-pdfn-8.fp
+       u-pdfn-8.fp \
+       ufqfpn28.fp
 
 .5c.fp:
        nickle $*.5c > $@

diff --git a/packages/ufqfpn28.5c b/packages/ufqfpn28.5c
new file mode 100644 (file)
index 0000000..aaf808e
--- /dev/null
+++ b/packages/ufqfpn28.5c
@@ -0,0 +1,128 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+load "footprint.5c"
+import Footprint;
+
+real pad_width = 0.55;
+real corner_pad_width = 0.50;
+real pad_height = 0.30;
+real corner_pad_notch = 0.12;
+real pad_spacing = 0.50;
+real pad_clearance = 12 / 1000 * 25.4;
+
+real pad_x_off = 3.20 / 2;
+real pad_y_off = 3.20 / 2;
+
+real package_width = 4;
+real package_height = 4;
+
+real num_pad = 7;      /* per side */
+
+element_start("ufqfpn-28");
+
+real pad_off(int n) {
+       return pad_spacing * (n - (num_pad - 1) / 2);
+}
+
+real corner(int dx, int dy) {
+       real    x = dx * package_width / 2;
+       real    y = dy * package_height / 2;
+       real    len = 0.4;
+
+       line(x, y, x - dx * len, y);
+       line(x, y, x, y - dy * len);
+}
+
+corner(-1, -1);
+corner(1, -1);
+corner(-1, 1);
+corner(1, 1);
+
+real dot_off = .3;
+
+line(-package_width/2 + dot_off, -package_height/2 + dot_off,
+     -package_width/2 + dot_off, -package_height/2 + dot_off);
+
+for (pad = 0; pad < num_pad; pad++) {
+       real pw = pad_width;
+       real ph = pad_height;
+       real pwa = 0;
+       real pha = 0;
+
+       int     nstep = 0;
+
+       if (pad == 0 || pad == num_pad-1)
+               nstep = 50;
+
+       for (int s = 0; s <= nstep; s++) {
+               if (nstep != 0) {
+                       real    step = (corner_pad_notch) / nstep;
+
+                       pw = corner_pad_width - (nstep - s) * step;
+                       ph = pad_height - s * step*2/3;
+
+                       pwa = pad_width - pw;
+
+                       pha = pad_height - ph;
+                       if (pad != 0)
+                               pha = -pha;
+               }
+
+               /* left (1-7) */
+               pad_mm_clear(-pad_x_off - pw / 2 - pwa,
+                            pad_off(pad) + pha,
+                            pw,
+                            ph,
+                            pad_clearance,
+                            sprintf("%d", pad + 1),
+                            sprintf("%d", pad + 1));
+
+               /* bottom (8-14) */
+
+               pad_mm_clear(pad_off(pad) + pha,
+                            pad_y_off + pw / 2 + pwa,
+                            ph,
+                            pw,
+                            pad_clearance,
+                            sprintf("%d", pad + 8),
+                            sprintf("%d", pad + 8));
+
+               /* right side (15-21) */
+
+               pad_mm_clear(pad_x_off + pw / 2 + pwa,
+                            -pad_off(pad) - pha,
+                            pw,
+                            ph,
+                            pad_clearance,
+                            sprintf("%d", pad + 15),
+                            sprintf("%d", pad + 15));
+
+               /* top (22-28) */
+
+               pad_mm_clear(-pad_off(pad) - pha,
+                            -pad_y_off - pw / 2 - pwa,
+                            ph,
+                            pw,
+                            pad_clearance,
+                            sprintf("%d", pad + 22),
+                            sprintf("%d", pad + 22));
+       }
+
+}
+
+element_end();