git.gag.com Git - hw/altusmetrum/blob - packages/ufqfpn28.5c

   1 /*
   2  * Copyright © 2012 Keith Packard <keithp@keithp.com>
   3  *
   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.
   7  *
   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.
  12  *
  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.
  16  */
  17
  18 load "footprint.5c"
  19 import Footprint;
  20
  21 real pad_width = 0.55;
  22 real corner_pad_width = 0.50;
  23 real pad_height = 0.30;
  24 real corner_pad_notch = 0.12;
  25 real pad_spacing = 0.50;
  26 real pad_clearance = 12 / 1000 * 25.4;
  27
  28 real pad_x_off = 3.20 / 2;
  29 real pad_y_off = 3.20 / 2;
  30
  31 real package_width = 4;
  32 real package_height = 4;
  33
  34 real num_pad = 7;       /* per side */
  35
  36 element_start("ufqfpn-28");
  37
  38 real pad_off(int n) {
  39         return pad_spacing * (n - (num_pad - 1) / 2);
  40 }
  41
  42 real corner(int dx, int dy) {
  43         real    x = dx * package_width / 2;
  44         real    y = dy * package_height / 2;
  45         real    len = 0.4;
  46
  47         line(x, y, x - dx * len, y);
  48         line(x, y, x, y - dy * len);
  49 }
  50
  51 corner(-1, -1);
  52 corner(1, -1);
  53 corner(-1, 1);
  54 corner(1, 1);
  55
  56 real dot_off = .3;
  57
  58 line(-package_width/2 + dot_off, -package_height/2 + dot_off,
  59      -package_width/2 + dot_off, -package_height/2 + dot_off);
  60
  61 for (pad = 0; pad < num_pad; pad++) {
  62         real pw = pad_width;
  63         real ph = pad_height;
  64         real pwa = 0;
  65         real pha = 0;
  66
  67         int     nstep = 0;
  68
  69         if (pad == 0 || pad == num_pad-1)
  70                 nstep = 4;
  71
  72         for (int s = 0; s <= nstep; s++) {
  73                 if (nstep != 0) {
  74                         real    step = (corner_pad_notch) / nstep;
  75
  76                         pw = corner_pad_width - (nstep - s) * step;
  77                         ph = pad_height - s * step*2/3;
  78
  79                         pwa = pad_width - pw;
  80
  81                         pha = pad_height - ph;
  82                         if (pad != 0)
  83                                 pha = -pha;
  84                 }
  85
  86                 /* left (1-7) */
  87                 pad_mm_clear(-pad_x_off - pw / 2 - pwa,
  88                              pad_off(pad) + pha,
  89                              pw,
  90                              ph,
  91                              pad_clearance,
  92                              sprintf("%d", pad + 1),
  93                              sprintf("%d", pad + 1));
  94
  95                 /* bottom (8-14) */
  96
  97                 pad_mm_clear(pad_off(pad) + pha,
  98                              pad_y_off + pw / 2 + pwa,
  99                              ph,
 100                              pw,
 101                              pad_clearance,
 102                              sprintf("%d", pad + 8),
 103                              sprintf("%d", pad + 8));
 104
 105                 /* right side (15-21) */
 106
 107                 pad_mm_clear(pad_x_off + pw / 2 + pwa,
 108                              -pad_off(pad) - pha,
 109                              pw,
 110                              ph,
 111                              pad_clearance,
 112                              sprintf("%d", pad + 15),
 113                              sprintf("%d", pad + 15));
 114
 115                 /* top (22-28) */
 116
 117                 pad_mm_clear(-pad_off(pad) - pha,
 118                              -pad_y_off - pw / 2 - pwa,
 119                              ph,
 120                              pw,
 121                              pad_clearance,
 122                              sprintf("%d", pad + 22),
 123                              sprintf("%d", pad + 22));
 124         }
 125
 126 }
 127
 128 element_end();