git.gag.com Git - hw/telegps/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 process_clearance = 0.6;
  22
  23         public int mm2mils100(real mm) = floor (mm / 25.4 * 1000 * 100 + 0.5);
  24
  25         public real mils1002mm(real mils100) = mils100 * 25.4 / 100 / 1000;
  26
  27         public int line_thickness = 1000;
  28
  29         public void element_start(string name) {
  30                 printf ("# author: Keith Packard\n");
  31                 printf ("# email: keithp@keithp.com\n");
  32                 printf ("# dist-license: GPL 2\n");
  33                 printf ("# use-license: unlimited\n");
  34                 printf ("Element [\"\" \"%s\" \"\" \"\" 0 0 0 0 0 100 \"\"]\n",
  35                         name);
  36                 printf ("(\n");
  37
  38         }
  39
  40         public void element_end() {
  41                 printf (")\n");
  42         }
  43
  44         public void pad_mm_clear(real center_x,
  45                                  real center_y,
  46                                  real width,
  47                                  real height,
  48                                  real clearance,
  49                                  string name,
  50                                  string num)
  51         {
  52                 real    x1 = 0;
  53                 real    y1 = 0;
  54                 real    x2 = 0;
  55                 real    y2 = 0;
  56                 real    thickness = 0;
  57
  58                 if (width > height) {
  59                         thickness = height;
  60                         y1 = center_y;
  61                         x1 = center_x - (width - height) / 2;
  62                         y2 = center_y;
  63                         x2 = center_x + (width - height) / 2;
  64                 } else {
  65                         thickness = width;
  66                         x1 = center_x;
  67                         y1 = center_y - (height - width) / 2;
  68                         x2 = center_x;
  69                         y2 = center_y + (height - width) / 2;
  70                 }
  71
  72                 real mask = thickness + clearance / 2;
  73
  74                 printf ("    Pad[");
  75                 printf (" %6d %6d %6d %6d",
  76                         mm2mils100(x1),
  77                         mm2mils100(y1),
  78                         mm2mils100(x2),
  79                         mm2mils100(y2));
  80                 printf (" %6d %6d %6d",
  81                         mm2mils100(thickness),
  82                         mm2mils100(clearance),
  83                         mm2mils100(mask));
  84                 printf (" \"%s\" \"%s\" \"square\"]\n",
  85                         name, num);
  86         }
  87
  88         public void pad_mm(real center_x,
  89                            real center_y,
  90                            real width,
  91                            real height,
  92                            string name,
  93                            string num)
  94         {
  95                 pad_mm_clear(center_x,
  96                              center_y,
  97                              width,
  98                              height,
  99                              process_clearance,
 100                              name,
 101                              num);
 102         }
 103
 104         public void pin_mm_clear(real x, real y, real drill, real copper, real clearance,
 105                         string name,
 106                         string number)
 107         {
 108                 real thickness = drill + copper * 2;
 109                 real mask = thickness + clearance / 2;
 110                 printf("    Pin[");
 111                 printf(" %6d %6d",
 112                        mm2mils100(x),
 113                        mm2mils100(y));
 114                 printf(" %6d %6d %6d %6d",
 115                        mm2mils100(thickness),
 116                        mm2mils100(clearance),
 117                        mm2mils100(mask),
 118                        mm2mils100(drill));
 119                 printf (" \"%s\" \"%s\"",
 120                         name, number);
 121                 printf (" \"\"]\n");
 122
 123         }
 124
 125         public void pin_mm(real x, real y, real drill, real copper,
 126                         string name,
 127                         string number)
 128         {
 129                 pin_mm_clear(x, y, drill, copper, process_clearance,
 130                              name, number);
 131         }
 132
 133         public void line (real x1, real y1, real x2, real y2)
 134         {
 135                 printf ("    ElementLine[");
 136                 printf (" %6d %6d %6d %6d",
 137                         mm2mils100(x1),
 138                         mm2mils100(y1),
 139                         mm2mils100(x2),
 140                         mm2mils100(y2));
 141                 printf (" %d]\n", line_thickness);
 142         }
 143
 144         public void rect (real x, real y, real w, real h)
 145         {
 146                 line(x,y,x+w,y);
 147                 line(x+w,y,x+w,y+h);
 148                 line(x+w,y+h,x,y+h);
 149                 line(x,y+h,x,y);
 150         }
 151 }