def _draw_padded_via(self):
viaref=DeviceReference(self.via.draw())
size=float(self.via.size*self.over_via)
port=viaref.ports['conn']
trace=pg.rectangle(size=(size,size),layer=self.pad_layers[0])
trace.move(origin=trace.center,\
destination=viaref.center)
trace2=pg.copy_layer(trace,layer=self.pad_layers[0],new_layer=self.pad_layers[1])
cell=Device(self.name)
cell.absorb(cell<<trace)
cell.absorb(cell<<trace2)
cell.add(viaref)
port.midpoint=(port.midpoint[0],cell.ymax)
port.width=size
cell.add_port(port)
if bottom_conn==False:
cell.remove_layers(layers=[self.pad_layers[1]])
return cell
def _draw_signal_routing(self):
cell = Device()
cell.add(self.sig1trace.draw())
cell.add(self.sig2trace.draw())
return cell
def _draw_ground_extensions(self,cell):
device_cell=cell["Device"]
output_cell=Device()
lx_device_ports=[]
rx_device_ports=[]
gnd_ports=ppt.find_ports(device_cell,'Ground',depth=0)
if not gnd_ports:
return output_cell
for p in gnd_ports:
if "LX" in p.name:
lx_device_ports.append(p)
elif "RX" in p.name:
rx_device_ports.append(p)
for p in lx_device_ports:
ext_length=abs(cell.xmin-p.midpoint[0]+self.gnd_routing_width)
output_cell.add(ppt.extend_port(p,
width=p.width,
length=ext_length,
layer=self.gndlefttrace.layer))
for p in rx_device_ports:
ext_length=abs(cell.xmax-p.midpoint[0]-self.gnd_routing_width)
output_cell.add(ppt.extend_port(p,
width=p.width,
length=ext_length,
layer=self.gndlefttrace.layer))
return output_cell
def from_phidl(component: Device, **kwargs) -> Component:
"""Returns gf.Component from a phidl Device or function"""
device = call_if_func(component, **kwargs)
component = Component(name=device.name)
for ref in device.references:
new_ref = ComponentReference(
component=ref.parent,
origin=ref.origin,
rotation=ref.rotation,
magnification=ref.magnification,
x_reflection=ref.x_reflection,
)
new_ref.owner = component
component.add(new_ref)
for alias_name, alias_ref in device.aliases.items():
if alias_ref == ref:
component.aliases[alias_name] = new_ref
for p in device.ports.values():
component.add_port(
port=Port(
name=p.name,
midpoint=p.midpoint,
width=p.width,
orientation=p.orientation,
parent=p.parent,
)
)
for poly in device.polygons:
component.add_polygon(poly)
for label in device.labels:
component.add_label(
text=label.text,
position=label.position,
layer=(label.layer, label.texttype),
)
return component
def alignment_marks_4layers(scale=[0.2, 0.5, 1]):
def dr(cell):
return DeviceReference(cell)
BElayer = pt.LayoutDefault.layerBottom
TElayer = pt.LayoutDefault.layerTop
VIAlayer = pt.LayoutDefault.layerVias
ETCHlayer = pt.LayoutDefault.layerEtch
PETCHlayer = pt.LayoutDefault.layerPartialEtch
Zerolayer = pt.LayoutDefault.layerPad
align1 = verniers(scale,
layers=[BElayer, VIAlayer],
label='VIA',
reversed=True)
align_ph = pg.bbox(align1.bbox) #only for space
align2 = verniers(scale, layers=[BElayer, TElayer], label='TE')
align3 = verniers(scale, layers=[BElayer, ETCHlayer], label='ETCH')
align4 = verniers(scale, layers=[BElayer, PETCHlayer], label='PETCH')
text = pc.Text()
text.size = 300
text.layer = (BElayer, TElayer, ETCHlayer, PETCHlayer, VIAlayer)
text.label = "Align to BE"
t1 = text.draw()
g = Group([align1, dr(align_ph), align2, align3, align4, t1])
g.distribute(direction='x', spacing=150)
g.align(alignment='y')
align5 = verniers(scale,
layers=[TElayer, VIAlayer],
label='VIA',
reversed=True)
align6 = verniers(scale, layers=[TElayer, ETCHlayer], label='ETCH')
align7 = verniers(scale, layers=[TElayer, PETCHlayer], label='PETCH')
text.layer = (TElayer, ETCHlayer, PETCHlayer, VIAlayer)
text.label = 'Align to TE'
t2 = text.draw()
g2 = Group([align5, dr(align_ph), dr(align_ph), align6, align7, t2])
g2.distribute(direction='x', spacing=150)
g2.align(alignment='y')
align8 = verniers(scale,
layers=[Zerolayer, VIAlayer],
label='VIA',
reversed=True)
align9 = verniers(scale, layers=[Zerolayer, BElayer], label='BE')
align10 = verniers(scale, layers=[Zerolayer, TElayer], label='TE')
align11 = verniers(scale, layers=[Zerolayer, ETCHlayer], label='ETCH')
align12 = verniers(scale, layers=[Zerolayer, PETCHlayer], label='PETCH')
text.layer = (Zerolayer, BElayer, TElayer, ETCHlayer, PETCHlayer, VIAlayer)
text.label = "Align to Pad"
t3 = text.draw()
g3 = Group([align8, align9, align10, align11, align12, t3])
g3.distribute(direction='x', spacing=150)
g3.align(alignment='y')
g_tot = Group([g, g2, g3])
g_tot.distribute(direction='y', spacing=150)
g_tot.align(alignment='xmin')
cell = Device("Alignments")
for c in [align1, align2, align3, align4, t1]:
cell.add(c)
for c in [align5, align6, align7, t2]:
cell.add(c)
for c in [align8, align9, align10, align11, align12, t3]:
cell.add(c)
return cell