mirror of
git://projects.qi-hardware.com/fped.git
synced 2024-11-18 06:59:43 +02:00
bb055fa209
This is for thermal vias and the unusual grounding method NXP use in their HVQFN33 footprints.
88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
/*
|
|
* hole.c - Classify holes and connect them with pads
|
|
*
|
|
* Written 2010, 2012 by Werner Almesberger
|
|
* Copyright 2010, 2012 by Werner Almesberger
|
|
*
|
|
* 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; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
|
|
#include "error.h"
|
|
#include "inst.h"
|
|
#include "overlap.h"
|
|
#include "hole.h"
|
|
|
|
|
|
static int check_through_hole(struct inst *pad, struct inst *hole)
|
|
{
|
|
if (!overlap(pad, hole, ao_none))
|
|
return 1;
|
|
if (!inside(hole, pad)) {
|
|
fail("hole (line %d) not completely inside "
|
|
"pad \"%s\" (line %d)", hole->obj->lineno,
|
|
pad->u.pad.name, pad->obj->lineno);
|
|
instantiation_error = pad->obj;
|
|
return 0;
|
|
}
|
|
if (hole->u.hole.pad) {
|
|
/*
|
|
* A hole can only be on several pads if the pads themselves
|
|
* overlap. We'll catch this error in refine_copper.
|
|
*/
|
|
return 1;
|
|
}
|
|
if (pad->u.pad.hole) {
|
|
fail("pad \"%s\" (line %d) has multiple holes (lines %d, %d)",
|
|
pad->u.pad.name, pad->obj->lineno,
|
|
hole->obj->lineno, pad->u.pad.hole->obj->lineno);
|
|
instantiation_error = pad->obj;
|
|
return 0;
|
|
}
|
|
pad->u.pad.hole = hole;
|
|
hole->u.hole.pad = pad;
|
|
return 1;
|
|
}
|
|
|
|
|
|
static int connect_holes(const struct pkg *pkg)
|
|
{
|
|
struct inst *pad, *hole;
|
|
|
|
for (pad = pkg->insts[ip_pad_copper]; pad; pad = pad->next)
|
|
for (hole = pkg->insts[ip_hole]; hole; hole = hole->next)
|
|
if (!check_through_hole(pad, hole))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
|
|
static void clear_links(const struct pkg *pkg)
|
|
{
|
|
struct inst *pad, *hole;
|
|
|
|
for (pad = pkg->insts[ip_pad_copper]; pad; pad = pad->next)
|
|
pad->u.pad.hole = NULL;
|
|
for (pad = pkg->insts[ip_pad_special]; pad; pad = pad->next)
|
|
pad->u.pad.hole = NULL;
|
|
for (hole = pkg->insts[ip_hole]; hole; hole = hole->next)
|
|
hole->u.hole.pad = NULL;
|
|
}
|
|
|
|
|
|
int link_holes(int linked)
|
|
{
|
|
const struct pkg *pkg;
|
|
|
|
for (pkg = pkgs; pkg; pkg = pkg->next) {
|
|
clear_links(pkg);
|
|
if (linked)
|
|
if (!connect_holes(pkg))
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|