def_to_pixels.py

#! /usr/bin/env python3

import argparse
import logging
import importlib.util

from design import Design

# derived from reference image "full-H"
# NOTE: this may change with improvements in the microscope hardware.
# be sure to re-calibrate after adjustments to the hardware.
PIX_PER_UM_20X = 3535 / 370 # 20x objective
PIX_PER_UM_5X = 2350 / 1000 # 5x objective, 3.94 +/- 0.005 ratio to 20x
PIX_PER_UM_10X = 3330 / 700 # 10x objective, ~4.757 pix/um
PIX_PER_UM = None

def main():
    parser = argparse.ArgumentParser(description="IRIS LEF/DEF to pixels helper")
    parser.add_argument(
        "--loglevel", required=False, help="set logging level (INFO/DEBUG/WARNING/ERROR)", type=str, default="INFO",
    )
    parser.add_argument(
        "--def-file", required=True, help="DEF file containing the top-level layout"
    )
    parser.add_argument(
        "--tech", required=True, help="Technology name", choices=['gf180', 'sky130', 'tsmc22ull']
    )
    parser.add_argument(
        "--mag", help="Magnification of target image", choices=['5x', '10x', '20x'], default='10x'
    )
    parser.add_argument(
        "--regenerate-lef", default=False, action="store_true", help="Force regeneration of LEF database"
    )
    parser.add_argument(
        "--redact", default=False, action="store_true", help="Redact details"
    )
    args = parser.parse_args()
    numeric_level = getattr(logging, args.loglevel.upper(), None)
    if not isinstance(numeric_level, int):
        raise ValueError('Invalid log level: %s' % args.loglevel)
    logging.basicConfig(level=numeric_level)

    tech_module_spec = importlib.util.spec_from_file_location('Tech', f'./{args.tech}.py')
    tech_module = importlib.util.module_from_spec(tech_module_spec)
    tech_module_spec.loader.exec_module(tech_module)
    tm = tech_module.Tech(args)

    if args.mag == '5x':
        PIX_PER_UM = PIX_PER_UM_5X
    elif args.mag == '10x':
        PIX_PER_UM = PIX_PER_UM_10X
    elif args.mag == '20x':
        PIX_PER_UM = PIX_PER_UM_20X

    top_def = Design(args.def_file, PIX_PER_UM, args.redact)
    logging.info("creating hierarchy...")
    top_def.create_hierarchy()
    logging.info("clustering hierarchy...")
    top_def.cluster_hierarchy()
    tm.set_func_count(top_def.total_func_regions)

    tm.gather_stats(top_def)
    logging.info("generating image...")

    # render the base case
    missing_cells = top_def.render_layer(tm)
    if len(missing_cells) > 0:
        # recurse through missing cells
        top_def.generate_missing(missing_cells, tm)

    missing_cells = top_def.render_function(tm)
    if len(missing_cells) > 0:
        top_def.generate_missing(missing_cells, tm, function=True)

    logging.info("generating legend...")
    top_def.generate_legend(tm)

    # final output artifacts
    top_def.save_layout()
    tm.print_stats()

if __name__ == "__main__":
    main()