2 * Copyright © 2012 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
21 real pad_width = 0.55;
22 real metal_width = 0.32;
23 real metal_height = 0.24;
24 real pad_height = 0.30;
25 real pad_spacing = 0.50;
26 real pad_clearance = 12 / 1000 * 25.4;
28 real center_width = 2;
29 real center_height = 2;
31 real package_width = 3;
32 real package_height = 3;
34 real pad_x_off = package_width / 2 - metal_width;
35 real pad_y_off = package_height / 2 - metal_width;
37 real num_pad = 4; /* per side */
39 element_start("qfn16-3x3");
42 return pad_spacing * (n - (num_pad - 1) / 2);
45 real corner(int dx, int dy) {
46 real x = dx * package_width / 2;
47 real y = dy * package_height / 2;
50 line(x, y, x - dx * len, y);
51 line(x, y, x, y - dy * len);
61 line(-package_width/2 + dot_off, -package_height/2 + dot_off,
62 -package_width/2 + dot_off, -package_height/2 + dot_off);
64 for (int pad = 0; pad < num_pad; pad++) {
67 pad_mm(-pad_x_off - pad_width / 2,
71 sprintf("%d", pad + 1),
72 sprintf("%d", pad + 1));
77 pad_y_off + pad_width / 2,
80 sprintf("%d", pad + 5),
81 sprintf("%d", pad + 5));
83 /* right side (9-12) */
85 pad_mm(pad_x_off + pad_width / 2,
89 sprintf("%d", pad + 9),
90 sprintf("%d", pad + 9));
95 -pad_y_off - pad_width / 2,
98 sprintf("%d", pad + 13),
99 sprintf("%d", pad + 13));
102 center_pad((center_t) {
105 .width = center_width,
106 .height = center_height,