Ofensteuerung v1.0: Wemos-Platine 100x100 mit Pumpenrelais 230 V, Thermostat parallel, Strommessung ZMCT103C/ADS1115, MAX6675 Abgas, 3x DS18B20, Servo MG996R, PWM-Pumpe; 2-stufiges Freerouting, ESPHome-Konfig
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#!/usr/bin/env python3
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"""Zweistufiges Routing mit Freerouting.
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1) nur 230-V-Netze, eingesperrt in MAINS_AREA; CT-Sekundärpins/-Stummel mit 4 mm Abstandsklasse
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2) Kleinspannung, MAINS_AREA gesperrt (230-V-Bahnen + LV-Stummel bleiben fest)
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-> ofensteuerung.kicad_pcb"""
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import os, sys, shutil, subprocess, pcbnew
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HERE = os.path.dirname(os.path.abspath(__file__))
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sys.path.insert(0, HERE)
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from design import PROJECT, MAINS, MAINS_AREA, W, H
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src = os.path.join(HERE, PROJECT + '_unrouted.kicad_pcb')
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dst = os.path.join(HERE, PROJECT + '.kicad_pcb')
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shutil.copy(os.path.join(HERE, PROJECT + '.kicad_pro'), src.replace('.kicad_pcb', '.kicad_pro'))
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mm = pcbnew.FromMM
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JAR = os.path.expanduser('~/tools/freerouting.jar')
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passes = int(sys.argv[1]) if len(sys.argv) > 1 else 30
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def freeroute(b, tag, mp):
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dsn, ses = f'/tmp/ofen_{tag}.dsn', f'/tmp/ofen_{tag}.ses'
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if os.path.exists(ses): os.remove(ses)
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assert pcbnew.ExportSpecctraDSN(b, dsn)
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for attempt in range(4):
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if os.path.exists(ses): os.remove(ses)
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r = subprocess.run(['java', '-jar', JAR, '-de', dsn, '-do', ses, '-mp', str(mp), '-l', 'en',
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'--gui.enabled=false', '--usage_and_diagnostic_data.disable_analytics=true'],
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capture_output=True, text=True, timeout=1800)
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final = [l for l in r.stdout.splitlines() if 'Auto-routing stage completed' in l]
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print(tag, attempt, final[-1][-120:] if final else r.stdout[-1500:])
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if final and '(0 unrouted' in final[-1] and os.path.exists(ses):
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return ses
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mp += 20
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raise SystemExit(tag + ': routing unvollständig\n' + r.stdout[-3000:] + r.stderr[-2000:])
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def keepout(b, pts, name):
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z = pcbnew.ZONE(b); z.SetIsRuleArea(True); z.SetDoNotAllowTracks(True); z.SetDoNotAllowVias(True)
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z.SetDoNotAllowZoneFills(True); z.SetDoNotAllowPads(False); z.SetDoNotAllowFootprints(False); z.SetZoneName(name)
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ls = pcbnew.LSET(); ls.AddLayer(pcbnew.F_Cu); ls.AddLayer(pcbnew.B_Cu); z.SetLayerSet(ls)
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ol = z.Outline(); ol.NewOutline()
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for x, y in pts: ol.Append(mm(x), mm(y))
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b.Add(z); return z
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def strip_zones(b):
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zs = [z for z in b.Zones() if not z.GetIsRuleArea()]
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for z in zs: b.Remove(z)
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return zs
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ismains = lambda n: n.lstrip('/') in MAINS or n.startswith('unconnected-(K1-')
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# ---------- Stufe 1: 230 V ----------
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import json
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p1 = '/tmp/ofen_p1.kicad_pcb'
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shutil.copy(src, p1)
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pro = json.load(open(os.path.join(HERE, PROJECT + '.kicad_pro')))
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nsj = pro['net_settings']
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d = dict([c for c in nsj['classes'] if c['name'] == 'Default'][0]); d.update(name='Iso', clearance=4.0, priority=0)
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nsj['classes'].append(d)
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nsj['netclass_patterns'].append({'netclass': 'Iso', 'pattern': 'ISO_*'})
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json.dump(pro, open(p1.replace('.kicad_pcb', '.kicad_pro'), 'w'), indent=2)
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b1 = pcbnew.LoadBoard(p1)
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_zs1 = strip_zones(b1)
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_ra1 = [z for z in b1.Zones() if z.GetZoneName() == 'NETZ_230V']
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for z in _ra1:
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b1.Remove(z) # reine "keine Fläche"-Zone wird im DSN als Sperrfläche exportiert
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newnets = {}
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def mknet(name):
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if name not in newnets:
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n = pcbnew.NETINFO_ITEM(b1, name); b1.Add(n); newnets[name] = n
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return newnets[name]
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for nm in ('ISO_VMID', 'ISO_CT_A', 'COIL_P5V', 'COIL_RELAY_C'):
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mknet(nm)
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for fp in list(b1.GetFootprints()):
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for pd in list(fp.Pads()):
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n = pd.GetNetname()
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if not n or ismains(n):
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continue
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if fp.GetReference() == 'T1':
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pd.SetNet(mknet('ISO_' + n.lstrip('/')))
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elif fp.GetReference() == 'K1':
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pd.SetNet(mknet('COIL_' + n.lstrip('/').replace('+', 'P')))
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else:
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pd.SetNet(b1.FindNet('')) # Hindernis ohne Netz
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_tr1 = list(b1.GetTracks())
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for t in _tr1:
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b1.Remove(t) # LV-Stummel in Stufe 1 weglassen (würden die Sperrflächen verletzen)
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b1.SynchronizeNetsAndNetClasses(True)
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x1, y1 = MAINS_AREA[2]
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keepout(b1, [(x1, 0), (W, 0), (W, H), (x1, H)], 'NUR_LV_R')
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keepout(b1, [(0, y1), (x1, y1), (x1, H), (0, H)], 'NUR_LV_U')
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ses1 = freeroute(b1, 'netz', passes)
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# ---------- Stufe 2: Kleinspannung ----------
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b = pcbnew.LoadBoard(src)
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zones = strip_zones(b)
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assert pcbnew.ImportSpecctraSES(b, ses1)
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for t in b.GetTracks():
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if ismains(t.GetNetname()):
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t.SetLocked(True)
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ko = keepout(b, MAINS_AREA, 'ROUTE_KEEPOUT')
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ses2 = freeroute(b, 'lv', passes)
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assert pcbnew.ImportSpecctraSES(b, ses2)
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b.Remove(ko)
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for z in zones: b.Add(z)
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pcbnew.ZONE_FILLER(b).Fill(b.Zones())
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b.BuildConnectivity()
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print('unconnected after fill:', b.GetConnectivity().GetUnconnectedCount(True))
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pcbnew.SaveBoard(dst, b)
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print('saved', dst, 'tracks', len(b.GetTracks()))
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