py: Import ihp_seal_ring pya script to add sealring to GDS

Signed-off-by: Sylvain Munaut <[email protected]>

py/ihp_seal_ring.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+
+#
+# Adds seal ring to an iHP design using KLayout PCELL
+# Copyright (c) 2024 htfab <[email protected]>
+# Copyright (c) 2024 Sylvain Munaut <[email protected]>
+#
+
+import os
+import sys
+
+import click
+
+import pya
+
+# Add KLayout tech in path
+TECH_DIR = os.path.join( os.getenv('PDK_ROOT'), os.getenv('PDK'), 'libs.tech/klayout' )
+sys.path.append(f'{TECH_DIR}/python')
+sys.path.append(f'{TECH_DIR}/python/pycell4klayout-api/source/python')
+
+# Import PCell stuff
+import sg13g2_pycell_lib
+assert 'SG13_dev' in pya.Library.library_names()
+
+
+@click.command()
+@click.option("--input-gds")
+@click.option("--output-gds")
+@click.option("--die-width", type=float)
+@click.option("--die-height", type=float)
+def cli(input_gds, output_gds, die_width, die_height):
+
+	# Load input layout
+	layout = pya.Layout()
+	layout.read(input_gds)
+	top = layout.top_cell()
+
+	# Create the PCell
+	params = {
+		'l': f'{die_width-50.0:f}u',
+		'w': f'{die_height-50.0:f}u',
+	}
+
+	sealring_pcell = layout.create_cell('sealring', 'SG13_dev', params)
+	sealring_pcell_i = sealring_pcell.cell_index()
+	sealring_static_i = layout.convert_cell_to_static(sealring_pcell_i)
+	sealring_static = layout.cell(sealring_static_i)
+	layout.delete_cell(sealring_pcell_i)
+	layout.rename_cell(sealring_static_i, 'sealring')
+
+	# Insert seal ring cell
+	top.insert(pya.CellInstArray(sealring_static, pya.Trans(0, 0)))
+
+	# Save output layout	
+	layout.write(output_gds)
+
+
+if __name__ == "__main__":
+	cli()
+
+
+
+