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Fix width of replica routes. Don't enclose pins if they overlap sufficiently.

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This commit is contained in:
mrg
2022-05-09 11:44:46 -07:00
parent 50045e54e8
commit b6c3580e24
3 changed files with 37 additions and 13 deletions
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compiler/router/router.py
+26 -10
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@@ -670,6 +670,17 @@ class router(router_tech):
return set([best_coord])
def break_on_grids(self, tracks, xvals, yvals):
track_list = []
for x in xvals:
for y in yvals:
track_list.append(vector3d(x, y, 0))
track_list.append(vector3d(x, y, 1))
for current in tracks:
if current in track_list:
breakpoint()
def divide_pin_to_tracks(self, pin, tracks):
"""
Return a list of pin shape parts that are in the tracks.
@@ -682,16 +693,11 @@ class router(router_tech):
overlap_pins = []
for track in tracks:
track_pin = self.convert_track_to_shape_pin(track)
overlap_rect = track_pin.intersection(pin)
if not overlap_rect:
continue
overlap_pin = pin_layout(pin.name,
overlap_rect,
pin.layer)
overlap_pin = track_pin.intersection(pin)
# If pin is smaller than minwidth, in one dimension, skip it.
min_pin_width = drc("minwidth_{0}". format(pin.layer))
if overlap_pin.width() < min_pin_width and overlap_pin.height() < min_pin_width:
if not overlap_pin or (overlap_pin.width() < min_pin_width and overlap_pin.height() < min_pin_width):
continue
else:
overlap_pins.append(overlap_pin)
@@ -1173,17 +1179,27 @@ class router(router_tech):
if len(path_tracks) == 0 or len(components) == 0:
return
# Find the track pin
track_pins = [self.convert_tracks_to_pin(x) for x in path_tracks]
# Convert the off-grid pin into parts in each routing grid
offgrid_pin_parts = []
for component in components:
pg = self.pin_groups[pin_name][component]
for pin in pg.pins:
# Layer min with
min_width = drc("minwidth_{}".format(pin.layer))
# If we intersect, by a min_width, we are done!
for track_pin in track_pins:
intersection = pin.intersection(track_pin)
if intersection and intersection.width() > min_width and intersection.height() > min_width:
return
#self.break_on_grids(pg.grids, xvals=[68], yvals=range(93,100))
partial_pin_parts = self.divide_pin_to_tracks(pin, pg.grids)
offgrid_pin_parts.extend(partial_pin_parts)
# Find the track pin
track_pins = [self.convert_tracks_to_pin(x) for x in path_tracks]
# Find closest part
closest_track_pin, closest_part_pin = self.find_closest_pin(track_pins, offgrid_pin_parts)