sync: HP_BOWEI 2026-10-15
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Myfro9
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"""工程封装库：从参考设计的 .kicad_pcb 按位号提取封装 / 从 KiCad 官方库拷贝。
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**必须用 KiCad 自带的 python 跑**（要 import pcbnew）：~/skills_env.md 的 KICAD_PYTHON。
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from schgen.fplib import FpLib
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lib = FpLib(r"E:\\...\\lib\\myboard.pretty")
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lib.from_pcb(r"E:\\...\\SMOD_V1.1.kicad_pcb", [("WSON-10-0R5", "U703", "TPS7A9201")])
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lib.from_kicad([("SOT-23", "Package_TO_SOT_SMD", "SOT-23", "Q")])
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lib.report()
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取封装的顺序（G-0033）：① 项目已有参考设计 ② KiCad 官方库（本地与线上）③ 第三方
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④ 按 datasheet 自己画。厂商私有 case style 往往就是某个标准封装，先看 datasheet 末页。
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pcbnew swig 的坑（G-0038）：便捷函数 FootprintLoad() 不能用，要走 PCB_IO_MGR 插件；
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对 BOARD Remove() 过 FOOTPRINT 之后 swig 类型注册会坏，所以这里只读板子、不改板子。
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"""
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import os
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import pcbnew
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MIN_TXT_H = pcbnew.FromMM(0.8) # 丝印下限（嘉立创）：字高 0.8 / 笔宽 0.15
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MIN_TXT_W = pcbnew.FromMM(0.15)
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class FpLib:
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def __init__(self, pretty):
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self.out = pretty
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os.makedirs(pretty, exist_ok=True)
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self.io = pcbnew.PCB_IO_MGR.FindPlugin(pcbnew.PCB_IO_MGR.KICAD_SEXP)
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self.ok, self.miss = [], []
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self._boards = {}
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@staticmethod
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def fixup(fp):
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# 无编号且孔环为 0 的"焊盘"其实是机械定位孔，改成 NPTH，否则 DRC 报 annular_width
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for pad in fp.Pads():
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if pad.GetNumber():
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continue
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d, s = pad.GetDrillSize(), pad.GetSize()
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if d.x and d.x >= s.x - 1 and d.y >= s.y - 1:
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pad.SetAttribute(pcbnew.PAD_ATTRIB_NPTH)
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pad.SetLayerSet(pcbnew.PAD.UnplatedHoleMask())
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texts = [fp.Reference(), fp.Value()]
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for it in fp.GraphicalItems():
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if it.GetClass() in ("PCB_TEXT", "FP_TEXT"):
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texts.append(it)
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for it in texts:
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if it.GetTextHeight() < MIN_TXT_H:
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it.SetTextSize(pcbnew.VECTOR2I(MIN_TXT_H, MIN_TXT_H))
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if it.GetTextThickness() < MIN_TXT_W:
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it.SetTextThickness(MIN_TXT_W)
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def save(self, fp, name, fix=None):
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fp.SetOrientationDegrees(0) # 板上实例还原成库里的朝向
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if fp.IsFlipped():
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fp.Flip(fp.GetPosition(), pcbnew.FLIP_DIRECTION_TOP_BOTTOM
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if hasattr(pcbnew, "FLIP_DIRECTION_TOP_BOTTOM") else False)
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fp.SetPosition(pcbnew.VECTOR2I(0, 0))
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fp.SetFPID(pcbnew.LIB_ID("", name))
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fp.SetReference("REF**")
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fp.SetValue(name)
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fp.SetPath(pcbnew.KIID_PATH())
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self.fixup(fp)
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if fix:
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fix(fp)
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self.io.FootprintSave(self.out, fp)
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return sorted({p.GetNumber() for p in fp.Pads()}, key=lambda s: (len(s), s))
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def from_pcb(self, pcb, items, fix=None):
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"""items: [(目标封装名, 参考板上的位号, 说明), ...]"""
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if pcb not in self._boards:
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print("载入 %s ..." % pcb)
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self._boards[pcb] = pcbnew.LoadBoard(pcb)
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brd = self._boards[pcb]
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for name, ref, note in items:
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fp = brd.FindFootprintByReference(ref)
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if fp is None:
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self.miss.append((name, "%s 里找不到位号 %s" % (os.path.basename(pcb), ref)))
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continue
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src = "%s:%s(%s)" % (os.path.basename(pcb), fp.GetFPID().GetUniStringLibItemName(), ref)
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self.ok.append((name, src, self.save(fp, name, fix), note))
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def from_kicad(self, items, fp_dir=None, fix=None):
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"""items: [(目标封装名, 库名, 库内封装名, 说明), ...]；目标名给 None 表示沿用原名。"""
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from .env import kicad_footprint_dir
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fp_dir = fp_dir or kicad_footprint_dir()
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for name, lib, src, note in items:
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try:
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fp = self.io.FootprintLoad(os.path.join(fp_dir, lib + ".pretty"), src)
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if fp is None:
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raise RuntimeError("FootprintLoad 返回 None")
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self.ok.append((name or src, "KiCad:%s/%s" % (lib, src),
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self.save(fp, name or src, fix), note))
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except Exception as e:
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self.miss.append((name or src, "%s: %s" % (type(e).__name__, e)))
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def add_courtyard(self, name, rect=None, margin=0.25, silk_rect=False):
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"""给库里的封装补 F.CrtYd（参考设计提来的常常没有，DRC 就查不到它和别人重叠）。
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rect=(x0, y0, x1, y1) 给实物外形（封装本地坐标，mm，如简牛护套）；不给就按焊盘+丝印外框。
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silk_rect=True 时同时在 F.SilkS 画出这个外形。已有 courtyard 的先清掉再画。"""
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fp = self.io.FootprintLoad(self.out, name)
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for g in list(fp.GraphicalItems()):
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if g.GetLayer() == pcbnew.F_CrtYd:
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fp.Remove(g)
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if rect is None:
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xs, ys = [], []
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for p in fp.Pads():
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bb = p.GetBoundingBox()
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xs += [bb.GetX(), bb.GetRight()]; ys += [bb.GetY(), bb.GetBottom()]
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for g in fp.GraphicalItems():
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if g.GetLayer() in (pcbnew.F_SilkS, pcbnew.F_Fab) and g.GetClass() != "PCB_TEXT":
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bb = g.GetBoundingBox()
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xs += [bb.GetX(), bb.GetRight()]; ys += [bb.GetY(), bb.GetBottom()]
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rect = (pcbnew.ToMM(min(xs)), pcbnew.ToMM(min(ys)), pcbnew.ToMM(max(xs)), pcbnew.ToMM(max(ys)))
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x0, y0, x1, y1 = rect[0] - margin, rect[1] - margin, rect[2] + margin, rect[3] + margin
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layers = [pcbnew.F_CrtYd] + ([pcbnew.F_SilkS] if silk_rect else [])
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for lay in layers:
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s = pcbnew.PCB_SHAPE(fp)
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s.SetShape(pcbnew.SHAPE_T_RECT)
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s.SetStart(pcbnew.VECTOR2I(pcbnew.FromMM(x0 if lay == pcbnew.F_CrtYd else rect[0]),
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pcbnew.FromMM(y0 if lay == pcbnew.F_CrtYd else rect[1])))
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s.SetEnd(pcbnew.VECTOR2I(pcbnew.FromMM(x1 if lay == pcbnew.F_CrtYd else rect[2]),
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pcbnew.FromMM(y1 if lay == pcbnew.F_CrtYd else rect[3])))
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s.SetLayer(lay)
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s.SetWidth(pcbnew.FromMM(0.05 if lay == pcbnew.F_CrtYd else 0.15))
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fp.Add(s)
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fp.Reference().SetTextAngleDegrees(0) # 参考设计里常是 180°，看着像镜像
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self.io.FootprintSave(self.out, fp)
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print(" courtyard %-20s (%.2f,%.2f)-(%.2f,%.2f)" % (name, x0, y0, x1, y1))
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def report(self):
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print("\n写出 %s" % self.out)
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for name, src, pads, note in self.ok:
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ps = ",".join(pads) if len(pads) <= 12 else "%s..%s (%d)" % (pads[0], pads[-1], len(pads))
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print(" %-34s pads=%-22s <- %-40s %s" % (name, ps, src, note))
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for name, why in self.miss:
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print(" !! %-31s %s" % (name, why))
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return 0 if not self.miss else 1
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