Commander1024
60c1e279d6
Introduce an editable KiCad 10 schematic and routed two-layer 82 × 80 mm layout with local provisional footprints, validation tooling, and component research. Keep the RS-232 male-module mapping and mechanical clearances explicitly provisional pending hardware verification.
130 lines
6.2 KiB
Python
130 lines
6.2 KiB
Python
#!/usr/bin/env python3
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"""Read-only regression checks for the two provisional module footprints.
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Run with the system Python that provides KiCad's installed pcbnew binding:
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/usr/bin/python3 -B hardware/PCB/validate_footprints.py
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Paths resolve relative to this script, independent of the working directory.
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No board, reports, or footprint files are written. Passing checks do not establish
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physical connector fit, electrical correctness, DRC, or fabrication readiness.
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"""
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from collections import Counter
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from pathlib import Path
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import sys
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import unittest
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try:
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import pcbnew as k
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except ImportError as exc:
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raise SystemExit(
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"KiCad pcbnew binding unavailable. Use the system Python associated with "
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"your KiCad installation (on this machine: /usr/bin/python3)."
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) from exc
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LIBRARY = Path(__file__).resolve().parent / "Carrier.pretty"
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def xy(vector):
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"""Keep native integer coordinates so comparisons do not hide deviations."""
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return vector.x, vector.y
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def mm(x, y):
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return k.FromMM(x), k.FromMM(y)
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class FootprintRegression(unittest.TestCase):
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def load(self, name):
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self.assertTrue((LIBRARY / (name + ".kicad_mod")).is_file(), name)
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footprint = k.FootprintLoad(str(LIBRARY), name)
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self.assertIsNotNone(footprint, f"KiCad could not parse {name}")
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self.assertEqual(footprint.GetValue(), name)
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self.assertEqual(footprint.GetLayer(), k.F_Cu)
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self.assertIn("PROVISIONAL connector fit", footprint.GetLibDescription())
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self.assertEqual(len(list(footprint.Zones())), 0, "Unexpected zone/keepout")
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self.assertEqual(len(list(footprint.Models())), 0, "Unexpected 3D envelope")
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graphics = list(footprint.GraphicalItems())
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for item in graphics:
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self.assertNotIn(item.GetLayer(), (k.F_CrtYd, k.B_CrtYd, k.Edge_Cuts))
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self.assertIsInstance(item, (k.PCB_TEXT, k.PCB_SHAPE),
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"Unexpected graphic/envelope type")
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self.assertTrue(any(isinstance(item, k.PCB_TEXT)
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and item.GetText() == "PROVISIONAL CONNECTOR FIT"
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for item in graphics), "Missing visible provisional label")
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return footprint
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def check_header(self, footprint, positions, hole_count=0):
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pads = list(footprint.Pads())
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self.assertEqual(len(pads), len(positions) + hole_count)
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numbered = [pad for pad in pads if pad.GetNumber()]
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# Compare multiplicities so duplicate numbers cannot hide missing pads.
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self.assertEqual(Counter(p.GetNumber() for p in numbered),
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Counter({str(n): 1 for n in positions}))
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for pad in numbered:
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number = int(pad.GetNumber())
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with self.subTest(pad=number):
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self.assertEqual(xy(pad.GetPosition()), mm(*positions[number]))
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self.assertEqual(xy(pad.GetSize()), mm(1.7, 1.7))
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self.assertEqual(xy(pad.GetDrillSize()), mm(1, 1))
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self.assertEqual(pad.GetDrillShape(), k.PAD_DRILL_SHAPE_CIRCLE)
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self.assertEqual(pad.GetAttribute(), k.PAD_ATTRIB_PTH)
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self.assertEqual(pad.GetShape(),
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k.PAD_SHAPE_RECT if number == 1 else k.PAD_SHAPE_CIRCLE)
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self.assertEqual(pad.GetNetCode(), 0, "Unexpected assigned net")
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for layer in (k.F_Cu, k.B_Cu, k.F_Mask, k.B_Mask):
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self.assertTrue(pad.IsOnLayer(layer), "Missing copper/mask layer")
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for layer in (k.F_Paste, k.B_Paste):
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self.assertFalse(pad.IsOnLayer(layer), "Unexpected paste layer")
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return [pad for pad in pads if not pad.GetNumber()]
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def test_oled(self):
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footprint = self.load("OLED_26mm_I2C_Provisional")
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positions = {n: (x, 1.5) for n, x in
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enumerate((9.19, 11.73, 14.27, 16.81), 1)}
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holes = self.check_header(footprint, positions, hole_count=4)
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self.assertEqual(Counter(xy(p.GetPosition()) for p in holes),
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Counter(mm(x, y) for x, y in (
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(1.75, 1.75), (24.25, 1.75),
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(1.75, 24.25), (24.25, 24.25))))
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for pad in holes:
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with self.subTest(hole=xy(pad.GetPosition())):
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self.assertEqual(pad.GetAttribute(), k.PAD_ATTRIB_NPTH)
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self.assertEqual(pad.GetShape(), k.PAD_SHAPE_CIRCLE)
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self.assertEqual(pad.GetDrillShape(), k.PAD_DRILL_SHAPE_CIRCLE)
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self.assertEqual(xy(pad.GetSize()), mm(2, 2))
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self.assertEqual(xy(pad.GetDrillSize()), mm(2, 2))
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self.assertEqual(pad.GetNetCode(), 0)
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shapes = [g for g in footprint.GraphicalItems() if isinstance(g, k.PCB_SHAPE)]
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self.assertEqual(len(shapes), 2, "Only board/display rectangles are verified")
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self.assertEqual(Counter((xy(g.GetStart()), xy(g.GetEnd())) for g in shapes),
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Counter([(mm(0, 0), mm(26, 26)),
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(mm(1, 4.5), mm(25.5, 21))]))
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for shape in shapes:
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self.assertEqual(shape.GetShape(), k.SHAPE_T_RECT)
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self.assertEqual(shape.GetLayer(), k.F_Fab)
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self.assertEqual(shape.GetWidth(), k.FromMM(0.1))
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self.assertFalse(shape.IsAnyFill())
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# Stroke styles are not checked: this binding returns opaque LINE_STYLE
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# pointers, so comparing GetLineStyle() results would compare identities,
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# not the solid/dash values, and also emits SWIG leak warnings.
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def test_hw678(self):
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footprint = self.load("HW678_2x22_Provisional")
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positions = {
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row * 22 + index + 1: (x, round(index * 2.54, 2))
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for row, x in enumerate((0, 25.4)) for index in range(22)
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}
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self.check_header(footprint, positions)
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self.assertFalse(any(isinstance(g, k.PCB_SHAPE)
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for g in footprint.GraphicalItems()),
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"HW678 must not acquire guessed outlines or envelopes")
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if __name__ == "__main__":
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print(f"KiCad {k.GetBuildVersion()}; library: {LIBRARY}", flush=True)
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suite = unittest.defaultTestLoader.loadTestsFromTestCase(FootprintRegression)
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result = unittest.TextTestRunner(verbosity=2).run(suite)
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sys.exit(0 if result.wasSuccessful() else 1)
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