kicad/generate_molex.py

import zipfile
from pathlib import Path
from tempfile import TemporaryDirectory
from typing import Optional, Union

import regex as re
import requests

from fp_generator import INCH, Footprint

dir_ = Path(__file__).parent

PARTS = [
    # Micro-Fit 3.0 Single Row Headers
    *[f"43650-{i:02d}10" for i in range(2, 13)],  # 1 row, RA, press-fit retention clip
    # *[f"43650-{i:02d}13" for i in range(2, 13)],  # 1 row, RA, solder tab
    # *[f"43650-{i:02d}22" for i in range(2, 13)],  # 1 row, Vertical, press-fit retention clip
    # *[f"43650-{i:02d}25" for i in range(2, 13)],  # 1 row, RA, solder tab
    # # Micro-Fit 3.0 Dual Row Headers
    # *[f"43045-{i:02d}07" for i in range(2, 25, 2)],  # 2 row, RA, press-fit retention clip
    # *[f"43045-{i:02d}10" for i in range(2, 25, 2)],  # 2 row, RA, solder tab
    # *[f"43045-{i:02d}16" for i in range(2, 25, 2)],  # 2 row, Vertical, press-fit retention clip
    # *[f"43045-{i:02d}19" for i in range(2, 25, 2)],  # 2 row, RA, solder tab
    # Eurostyle 5.08mm Headers
    # "39531-0002",
    # Eurostyle 5.08mm Plugs
    # "39530-0002",
]


def download_step_molex(part: Union[str, int]) -> None:
    # remove dash
    part = f'{int(str(part).replace("-", "")):09d}'

    print(part)

    with TemporaryDirectory(prefix=str(dir_ / "tmp") + "/") as tmp:
        tmp = Path(tmp)

        for p in [part, part[:5] + "-" + part[5:]]:
            try:
                zipname = f"{part}_stp.zip"

                # download
                with open(tmp / zipname, "wb") as f:
                    f.write(requests.get(f"https://www.molex.com/pdm_docs/stp/{p}_stp.zip").content)

                # unzip
                with zipfile.ZipFile(tmp / zipname) as zip:
                    zip.extractall(path=str(tmp))

                # move
                filename = f"{part}.stp"
                (Path(tmp) / filename).rename(dir_ / "molex.pretty" / "step" / filename)

                return
            except zipfile.BadZipFile:
                print(f"zip does not exist for part {p}")

        raise ValueError(f"Could not download .stp for part {part}")


def footprint(part: str, lib: Optional[Union[Path, str]] = None):
    # remove dash
    part = f'{int(str(part).replace("-", "")):09d}'
    print(part)
    if lib is None:
        lib = dir_ / "molex.pretty"
    lib = Path(lib)

    if part.startswith("43650"):
        match = re.match(r"43650(\d\d)(\d\d)", part)
        pins = int(match[1])
        flavor = int(match[2])

        if flavor == 10:
            fp = Footprint(
                part, lib=lib, description=f"connector, Micro-Fit 3.0, 1x{pins:02f}, RA, press-fit retention clip"
            )
            fp.add_text("reference", "REF**", -(6.93 + (0.025 + 0.005) * INCH), 0, rotation=90, layer="F.SilkS")
            fp.add_text("value", "VAL**", -0.025 * INCH, 0, rotation=90, layer="F.Fab")
            fp.add_text("user", r"${REFERENCE}**", 0.025 * INCH, 0, rotation=90, layer="F.Fab")
            # fp.add_rect(
            #     [-0.05 * INCH] * 2,
            #     (0.05 * INCH + strobe[0] * (cols - 1), 0.05 * INCH + strobe[1] * (rows - 1)),
            #     layer="F.SilkS",
            # )
            # fp.add_line((-0.05 * INCH, 0.05 * INCH), (0.05 * INCH, 0.05 * INCH), layer="F.SilkS")
            # fp.add_line((0.05 * INCH, -0.05 * INCH), (0.05 * INCH, 0.05 * INCH), layer="F.SilkS")
            a, b, c = {
                2: (0.380, 0.118, 0.287),
                3: (0.498, 0.236, 0.405),
                4: (0.616, 0.354, 0.524),
                5: (0.734, 0.472, 0.642),
                6: (0.852, 0.591, 0.760),
                7: (0.970, 0.709, 0.878),
                8: (1.088, 0.827, 0.996),
                9: (1.206, 0.945, 1.114),
                10: (1.325, 1.063, 1.232),
                11: (1.443, 1.181, 1.350),
                12: (1.561, 1.299, 1.469),
            }[pins]
            a *= INCH
            b *= INCH
            c *= INCH
            for pad in range(pins):
                fp.add_pad(
                    pad + 1,
                    (-0.273 + 0.115 / 2) * INCH,
                    -3.0 * (pins - 1) / 2 + 3.0 * pad,
                    size=(0.115 * INCH, 0.050 * INCH),
                    shape="rect",
                )
            # mechanical holes
            for s in [1, -1]:
                fp.add_pad(0, 0, s * c / 2, size=(0.095 + 0.050) * INCH, hole=0.095 * INCH, shape="circle")
            fp.add_model(
                lib / "step" / f"{part}.stp",
                (4.6, 0, 0.5),
                rotate=(0, 0, -90),
            )
            fp.add_rect((4.6 - 9.9, -a / 2), (4.6, a / 2), layer="F.Fab")
            fp.write()
        else:
            raise NotImplementedError
    else:
        raise NotImplementedError


if __name__ == "__main__":
    from multiprocessing import Pool

    pool = Pool(10)
    # pool.map(download_step_molex, PARTS)
    for part in PARTS:
        footprint(part)
    pool.close()