/*
 * Copyright © 2012 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;

Footprint::process_clearance = 0.07;

real pad_expose = 0.1;
real pad_width = 0.28;
real pad_height = 0.50;
real pad_x_spacing = 0.50;
real pad_y_gap = 1.4;
real pad_y_spacing = pad_y_gap + pad_height;

real package_width = 2;
real package_height = 2;

real center_width = 1.6;
real center_height = 0.9;

real clearance = 0.0061 * 25.4;
real mask = 0.07;

real pad_x_off = package_width / 2 - (pad_width - pad_expose) / 2 + pad_expose;

real num_pad = 4;	/* per side */

element_start("s-pwson-n8");

/* full center pad */
pad_mm_clear_mask_options(0, 0, center_width, center_height, 0, center_height + mask, "9", "9", "square,nopaste");

/* 63% paste coverage */
real paste_coverage = 0.63;
real paste_coverage_scale = sqrt(paste_coverage);
pad_mm_clear_mask_options(0, 0, center_width * paste_coverage_scale,
			  center_height * paste_coverage_scale, 0, center_height + mask, "9", "9", "square");

real pad_y_off = pad_y_spacing / 2;

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

for (int pad = 0; pad < num_pad; pad++) {
	/* bottom side (1-4) */

	pad_mm_clear_mask_options(pad_off(pad),
				  pad_y_off,
				  pad_width,
				  pad_height,
				  clearance * 2, pad_width + mask,
				  sprintf("%d", pad + 1),
				  sprintf("%d", pad + 1), "square");
	
	/* top side (8-5) */

	pad_mm_clear_mask_options(pad_off(pad),
				  -pad_y_off,
				  pad_width,
				  pad_height,
				  clearance * 2, pad_width + mask,
				  sprintf("%d", 8 - pad),
				  sprintf("%d", 8 - pad), "square");
	
}

element_end();