git.gag.com Git - hw/micropeak/blob - packages/footprint.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 namespace Footprint {
  19
  20         /* process clearance requirement */
  21         public real clearance = 0.6;
  22
  23         public int mm2mils100(real mm) = floor (mm / 25.4 * 1000 * 100 + 0.5);
  24
  25         public void element_start(string name) {
  26                 printf ("# author: Keith Packard\n");
  27                 printf ("# email: keithp@keithp.com\n");
  28                 printf ("# dist-license: GPL 2\n");
  29                 printf ("# use-license: unlimited\n");
  30                 printf ("Element [\"\" \"%s\" \"\" \"\" 0 0 0 0 0 100 \"\"]\n",
  31                         name);
  32                 printf ("(\n");
  33
  34         }
  35
  36         public void element_end() {
  37                 printf (")\n");
  38         }
  39
  40         public void pad_mm(real center_x,
  41                            real center_y,
  42                            real width,
  43                            real height,
  44                            string name,
  45                            string num)
  46         {
  47                 real    x1 = 0;
  48                 real    y1 = 0;
  49                 real    x2 = 0;
  50                 real    y2 = 0;
  51                 real    thickness = 0;
  52
  53                 if (width > height) {
  54                         thickness = height;
  55                         y1 = center_y;
  56                         x1 = center_x - (width - height) / 2;
  57                         y2 = center_y;
  58                         x2 = center_x + (width - height) / 2;
  59                 } else {
  60                         thickness = width;
  61                         x1 = center_x;
  62                         y1 = center_y - (height - width) / 2;
  63                         x2 = center_x;
  64                         y2 = center_y + (height - width) / 2;
  65                 }
  66
  67                 real mask = thickness + clearance / 2;
  68
  69                 printf ("    Pad[");
  70                 printf (" %6d %6d %6d %6d",
  71                         mm2mils100(x1),
  72                         mm2mils100(y1),
  73                         mm2mils100(x2),
  74                         mm2mils100(y2));
  75                 printf (" %6d %6d %6d",
  76                         mm2mils100(thickness),
  77                         mm2mils100(clearance),
  78                         mm2mils100(mask));
  79                 printf (" \"%s\" \"%s\" \"square\"]\n",
  80                         name, num);
  81         }
  82
  83         public void pin_mm(real x, real y, real drill, real copper,
  84                         string name,
  85                         string number)
  86         {
  87                 real thickness = drill + copper * 2;
  88                 real mask = thickness + clearance / 2;
  89                 printf("    Pin[");
  90                 printf(" %6d %6d",
  91                        mm2mils100(x),
  92                        mm2mils100(y));
  93                 printf(" %6d %6d %6d %6d",
  94                        mm2mils100(thickness),
  95                        mm2mils100(clearance),
  96                        mm2mils100(mask),
  97                        mm2mils100(drill));
  98                 printf (" \"%s\" \"%s\"",
  99                         name, number);
 100                 printf (" \"\"]\n");
 101
 102         }
 103
 104         public void line (real x1, real y1, real x2, real y2)
 105         {
 106                 printf ("    ElementLine[");
 107                 printf (" %6d %6d %6d %6d",
 108                         mm2mils100(x1),
 109                         mm2mils100(y1),
 110                         mm2mils100(x2),
 111                         mm2mils100(y2));
 112                 printf (" 1000]\n");
 113         }
 114
 115         public void rect (real x, real y, real w, real h)
 116         {
 117                 line(x,y,x+w,y);
 118                 line(x+w,y,x+w,y+h);
 119                 line(x+w,y+h,x,y+h);
 120                 line(x,y+h,x,y);
 121         }
 122 }