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

   1 /*
   2  * Copyright © 2018 Bdale Garbee <bdale@gag.com>, GPLv3+
   3  */
   4
   5 load "footprint.5c"
   6 import Footprint;
   7
   8 int total_pad = 28;
   9 real center_gap = 7.20 - 1.75;
  10 real pad_height = 1.75;
  11 real pad_width = 0.45;
  12 real pad_spacing = 0.65;
  13
  14 if (dim(argv) > 1)
  15         total_pad = string_to_integer(argv[1]);
  16 if (dim(argv) > 2)
  17         center_gap = string_to_real(argv[2]);
  18 if (dim(argv) > 3)
  19         pad_height = string_to_real(argv[3]);
  20 if (dim(argv) > 4)
  21         pad_width = string_to_real(argv[4]);
  22 if (dim(argv) > 5)
  23         pad_spacing = string_to_real(argv[5]);
  24
  25 int num_pad = total_pad / 2;    /* per side */
  26
  27 string name = sprintf ("SSOP-%d", total_pad);
  28
  29 real package_width = (num_pad - 1) * pad_spacing + 1.75;
  30
  31 real package_height = center_gap - 0.15;
  32
  33 if (dim(argv) > 6)
  34         package_width = string_to_real(argv[6]);
  35
  36 if (dim(argv) > 7)
  37         package_height = string_to_real(argv[7]);
  38
  39 real pad_y_off = center_gap / 2 + pad_height / 2;
  40
  41 element_start(name);
  42
  43 real pad_off(int n) {
  44         return pad_spacing * (n - (num_pad - 1) / 2);
  45 }
  46
  47 real corner(int dx, int dy) {
  48         real    x = dx * package_width / 2;
  49         real    y = dy * package_height / 2;
  50         real    len = 0.4;
  51
  52         line(x, y, x - dx * len, y);
  53         line(x, y, x, y - dy * len);
  54 }
  55
  56 corner(-1, -1);
  57 corner(1, -1);
  58 corner(-1, 1);
  59 corner(1, 1);
  60
  61 real dot_off = -.3;
  62
  63 line(-package_width/2 + dot_off, package_height/2 - dot_off,
  64      -package_width/2 + dot_off, package_height/2 - dot_off);
  65
  66 for (int pad = 0; pad < num_pad; pad++) {
  67         /* bottom (1-num_pad) */
  68
  69         pad_mm(pad_off(pad),
  70                pad_y_off,
  71                pad_width,
  72                pad_height,
  73                sprintf("%d", pad + 1),
  74                sprintf("%d", pad + 1));
  75
  76         /* top side (total_pad - num_pad+1) */
  77
  78         pad_mm(pad_off(pad),
  79                -pad_y_off,
  80                pad_width,
  81                pad_height,
  82                sprintf("%d", total_pad - pad),
  83                sprintf("%d", total_pad - pad));
  84
  85 }
  86
  87 element_end();