86 lines
3.2 KiB
Python
86 lines
3.2 KiB
Python
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"""
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PortPather tutorial: Using .at() syntax for fluent port manipulation
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"""
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from numpy import pi
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from masque import Pather, Library, Pattern, Port
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from masque.builder.tools import AutoTool
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from masque.file.gdsii import writefile
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from basic_shapes import GDS_OPTS
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# Reuse helper functions and constants from the basic pather tutorial
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from pather import (
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M1_WIDTH, V1_WIDTH, M2_WIDTH,
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make_pad, make_via, make_bend, make_straight_wire, map_layer
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)
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def main() -> None:
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# Reuse the same patterns (pads, bends, vias) and tools as in pather.py
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library, M1_tool, M2_tool = prepare_tools()
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library['pad'] = make_pad()
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library['m1_bend'] = make_bend(layer='M1', ptype='m1wire', width=M1_WIDTH)
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library['m2_bend'] = make_bend(layer='M2', ptype='m2wire', width=M2_WIDTH)
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library['v1_via'] = make_via(
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layer_top='M2', layer_via='V1', layer_bot='M1',
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width_top=M2_WIDTH, width_via=V1_WIDTH, width_bot=M1_WIDTH,
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ptype_bot='m1wire', ptype_top='m2wire',
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)
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# Create a RenderPather and place some initial pads (same as Pather tutorial)
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rpather = RenderPather(library, tools=M2_tool)
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rpather.place('pad', offset=(18_000, 30_000), port_map={'wire_port': 'VCC'})
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rpather.place('pad', offset=(18_000, 60_000), port_map={'wire_port': 'GND'})
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rpather.pattern.label(layer='M2', string='VCC', offset=(18e3, 30e3))
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rpather.pattern.label(layer='M2', string='GND', offset=(18e3, 60e3))
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#
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# Routing with .at()
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#
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# The .at(port_name) method returns a PortPather object which wraps the Pather
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# and remembers the selected port(s). This allows method chaining.
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# Then we can route just like in the other pather tutorials:
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(rpather.at('VCC')
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.path(ccw=False, length=6_000)
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.path_to(ccw=None, x=0)
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)
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rpather.at('GND').path(0, 5_000).path_to(None, x=rpather['VCC'].x)
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# We're using AutoTool so we could retool directly to M1_ptool like in the Pather
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# tutorial, but let's manually plug to demonstrate what it looks like:
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(rpather.at('GND')
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.plug('v1_via', 'top')
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.retool(M1_tool) # this only retools the 'GND' port
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)
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# We can also pass multiple ports to .at(), and then use .mpath() on them:
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(rpather.at(['GND', 'VCC'])
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.mpath(ccw=True, xmax=-10_000, spacing=5_000)
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.retool(M1_tool) # this retools both ports
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.mpath(ccw=True, emax=50_000, spacing=1_200) # ...causing an automatic via on VCC here
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.mpath(ccw=False, emin=1_000, spacing=1_200)
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.mpath(ccw=False, emin=2_000, spacing=4_500)
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)
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# Now we can finish up the equivalent to the other tutorials..
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rpather.at('VCC').retool(M2_tool)
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rpather.at(['GND', 'VCC']).mpath(None, xmin=-28_000)
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rpather.at('VCC').path_to(None, x=-50_000, out_ptype='m1wire')
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with pather.toolctx(M2_tool, keys=['GND']):
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pather.at('GND').path_to(None, x=-40_000)
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pather.at('GND').path_to(None, x=-50_000)
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#
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# Save result
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#
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library['PortPather_Tutorial'] = pather.pattern
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library.map_layers(map_layer)
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writefile(library, 'port_pather.gds', **GDS_OPTS)
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if __name__ == '__main__':
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main()
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