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added argument parser, json input & example sky130 layer json file #2

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added argument parser, json input & example sky130 layer json file #2

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56 changes: 22 additions & 34 deletions gdsiistl.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,50 +17,38 @@
user units (often microns).
"""

import sys # read command-line arguments
import gdspy # open gds file
from stl import mesh # write stl file (python package name is "numpy-stl")
import numpy as np # fast math on lots of points
import triangle # triangulate polygons
import argparse, json # parse args, json

# get the input file name
if len(sys.argv) < 2: # sys.argv[0] is the name of the program
print("Error: need exactly one file as a command line argument.")
sys.exit(0)
gdsii_file_path = sys.argv[1]

########## CONFIGURATION (EDIT THIS PART) #####################################

# choose which GDSII layers to use
layerstack = {
# (layernumber, datatype) : (zmin, zmax, 'layername'),

(235,4): (0, 0.1, 'substrate'),

(64,20): (0, 0.1, 'nwell'),
(65,44): (0, 0.1, 'tap'),
(65,20): (0, 0.1, 'diff'),
(66,20): (0, 0.1, 'poly'),
(66,44): (0, 0.1, 'licon'),
(67,20): (0, 0.1, 'li1'),
(67,44): (0, 0.1, 'mcon'),
(68,20): (0, 0.1, 'met1'),
(68,44): (0, 0.1, 'via'),
(69,20): (0, 0.1, 'met2'),
(69,44): (0, 0.1, 'via2'),
(70,20): (0, 0.1, 'met3'),
(70,44): (0, 0.1, 'via3'),
(71,20): (0, 0.1, 'met4'),
(71,44): (0, 0.1, 'via4'),
(72,20): (0, 0.1, 'met5'),
# (83,44): (0, 0.1, 'text'),
parser = argparse.ArgumentParser(
prog="gdsiistl",
description="Convert a GDSII 2D layout file to multiple 3D STL files that can be visualised in an external program."
)

parser.add_argument("gds_path", help="Specify the path to the GDSII file to process")
parser.add_argument("-l",
"--layers",
metavar="layer_file.json",
help="Specify the path to the JSON file containing the layers to extract. (Default: sky130.json)",
default="sky130.json")

args = parser.parse_args()
gdsii_file_path = args.gds_path

}

layers = None
with open(args.layers) as f:
layers = json.load(f)


## need to convert the json into the same format as the original layerstack dict
# layerstack = (layernumber, datatype) : (zmin, zmax, 'layername')
layerstack = {}
for layer in layers:
# min pos max pos
layerstack[(layer["LAYER_NUMBER"], layer["DATA_TYPE"])] = (layer["Z_POSITION"][0], layer["Z_POSITION"][1], layer["LAYER_NAME"])


########## INPUT ##############################################################
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98 changes: 98 additions & 0 deletions sky130.json
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@@ -0,0 +1,98 @@
[
{
"LAYER_NUMBER": 235,
"DATA_TYPE": 4,
"LAYER_NAME": "substrate",
"Z_POSITION": [-0.5, 0]
},
{
"LAYER_NUMBER": 64,
"DATA_TYPE": 20,
"LAYER_NAME": "nwell",
"Z_POSITION": [-0.24, -0.1]
},
{
"LAYER_NUMBER": 65,
"DATA_TYPE": 20,
"LAYER_NAME": "diff",
"Z_POSITION": [-0.5, 0.1]
},
{
"LAYER_NUMBER": 66,
"DATA_TYPE": 20,
"LAYER_NAME": "poly",
"Z_POSITION": [0, 0.2]
},
{
"LAYER_NUMBER": 66,
"DATA_TYPE": 44,
"LAYER_NAME": "licon",
"Z_POSITION": [0, 0.94]
},
{
"LAYER_NUMBER": 67,
"DATA_TYPE": 20,
"LAYER_NAME": "li1",
"Z_POSITION": [0.94, 1.04]
},
{
"LAYER_NUMBER": 67,
"DATA_TYPE": 44,
"LAYER_NAME": "mcon",
"Z_POSITION": [1.04, 1.38]
},
{
"LAYER_NUMBER": 68,
"DATA_TYPE": 20,
"LAYER_NAME": "met1",
"Z_POSITION": [1.38, 1.74]
},
{
"LAYER_NUMBER": 68,
"DATA_TYPE": 44,
"LAYER_NAME": "via",
"Z_POSITION": [1.74, 2.01]
},
{
"LAYER_NUMBER": 69,
"DATA_TYPE": 20,
"LAYER_NAME": "met2",
"Z_POSITION": [2.01, 2.37]
},
{
"LAYER_NUMBER": 69,
"DATA_TYPE": 44,
"LAYER_NAME": "via2",
"Z_POSITION": [2.37, 2.79]
},
{
"LAYER_NUMBER": 70,
"DATA_TYPE": 20,
"LAYER_NAME": "met3",
"Z_POSITION": [2.79, 3.64]
},
{
"LAYER_NUMBER": 70,
"DATA_TYPE": 44,
"LAYER_NAME": "via3",
"Z_POSITION": [3.64, 4.03]
},
{
"LAYER_NUMBER": 71,
"DATA_TYPE": 20,
"LAYER_NAME": "met4",
"Z_POSITION": [4.03, 4.88]
},
{
"LAYER_NUMBER": 71,
"DATA_TYPE": 44,
"LAYER_NAME": "via4",
"Z_POSITION": [4.88, 5.38]
},
{
"LAYER_NUMBER": 72,
"DATA_TYPE": 20,
"LAYER_NAME": "met5",
"Z_POSITION": [5.38, 6.65]
}
]