/*
 * Copyright © 2013 Keith Packard <keithp@keithp.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 */

load "footprint.5c"
import Footprint;

process_clearance = 0.25;

real package_width = 5;
real package_height = 5;
real pad_spacing = 0.5;		/* P */
real pad_height = 0.85;		/* C */
real pad_width = 0.27;		/* D */
real pad_center_x = 5.25 / 2;	/* Gx/2 */
real pad_center_y = 5.25 / 2;	/* Gy/2 */

real center_width = 3.75;	/* SLx */
real center_height = 3.75;	/* SLy */

real center_drill = 0.015 * 25.4;
real center_mask = 0.60 / 2;

real center_space = 1.1;

int num_pad = 8;	/* per side */

real pad_off(int n) {
	return pad_spacing * (n - (num_pad - 1) / 2);
}

element_start("hvqfn33");

for (pad = 0; pad < num_pad; pad++) {
	/* left side (1-8) */

	pad_mm(-pad_center_x,
	       pad_off(pad),
	       pad_height,
	       pad_width,
	       sprintf("%d", pad + 1),
	       sprintf("%d", pad + 1));

	/* bottom (9-16) */

	pad_mm(pad_off(pad),
	       pad_center_y,
	       pad_width,
	       pad_height,
	       sprintf("%d", pad + 9),
	       sprintf("%d", pad + 9));

	/* right (17-24) */

	pad_mm(pad_center_x,
	       -pad_off(pad),
	       pad_height,
	       pad_width,
	       sprintf("%d", pad + 17),
	       sprintf("%d", pad + 17));

	/* top (25-32) */

	pad_mm(-pad_off(pad),
	       -pad_center_y,
	       pad_width,
	       pad_height,
	       sprintf("%d", pad + 25),
	       sprintf("%d", pad + 25));
}

/* center */

pad_mm_clear_mask_options(0, 0, center_width, center_height, process_clearance, 0,
			  "33", "33", "square,nopaste");


real clear_top = center_space * 0.5 + center_mask;
real clear_bottom = center_height / 2;
real clear_height = clear_bottom - clear_top;
real clear_y = (clear_top + clear_bottom) / 2;

for (y = -1; y <= 1; y+= 2) {
	pad_mm_clear_mask_options(0, y * clear_y, center_width, clear_height,
				  0, clear_height, "33", "33", "square,nopaste");

	pad_mm_clear_mask_options(y * clear_y, 0, clear_height, center_height,
				  0, clear_height, "33", "33", "square,nopaste");
}

real hole_pos = 0.5 * center_space;
real strip_top = -hole_pos + center_mask;
real strip_bot = hole_pos - center_mask;
real strip_size = strip_bot - strip_top;

pad_mm_clear_mask_options(0, 0, center_width, strip_size,
			  0, strip_size, "33", "33", "square,nopaste");

pad_mm_clear_mask_options(0, 0, strip_size, center_height,
			  0, strip_size, "33", "33", "square,nopaste");

/* center solder spots */

for (y = -1; y <= 1; y += 1) {
	for (x = -1; x <= 1; x += 1) {
		pad_mm_clear_mask_options(x * center_space, y * center_space,
					  center_mask*2, center_mask*2, 0, center_mask * 2, "33", "33", "");
	}
}

/* center holes */

for (y = -0.5; y <= 0.5; y += 1) {
	for (x = -0.5; x <= 0.5; x += 1) {
		pin_mm_clear_mask_options(x * center_space, y * center_space,
					  center_drill, center_mask, 0.012 * 25.4, 0, "33", "33",
					  "square,via");
	}
}

/* outline */

rect(-package_width/2, -package_height/2, package_width, package_height);

dot_off = 0.3;
dot_x = -package_width/2 - dot_off;
dot_y = -package_height/2 - dot_off;

line(dot_x, dot_y, dot_x, dot_y);

element_end();