Run ImpedenceFinder Z0 on routed signal nets during project analysis.
Pipeline samples PCB traces when stackup εr/h is present; power/ground are skipped. Named nets can be re-analyzed from the Impedance tab. Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Cursor
@@ -347,7 +347,9 @@ export default function ProjectDetailPage({
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/>
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)}
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{tab === "impedance" && <ImpedancePanel />}
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{tab === "impedance" && (
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<ImpedancePanel projectId={id} hasPcb={Boolean(project.hasPcb)} />
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)}
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{tab === "logs" && (
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<ApiLogsSection logs={logs} />
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@@ -1,13 +1,18 @@
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"use client";
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import { useState } from "react";
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import { useEffect, useState } from "react";
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import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
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import { Button } from "@/components/ui/button";
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import { Input } from "@/components/ui/input";
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import { Label } from "@/components/ui/label";
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import { computeImpedance } from "@/lib/api";
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import {
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analyzeImpedanceNets,
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computeImpedance,
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fetchImpedanceNets,
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} from "@/lib/api";
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import type {
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ImpedanceKind,
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ImpedanceNetsReport,
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ImpedanceStackupResult,
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ImpedanceTraceResult,
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} from "@/lib/types";
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@@ -21,7 +26,13 @@ function fmt(n: number | null | undefined, digits = 2): string {
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return n.toFixed(digits);
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}
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export function ImpedancePanel() {
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export function ImpedancePanel({
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projectId,
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hasPcb,
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}: {
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projectId: string;
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hasPcb: boolean;
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}) {
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const [kind, setKind] = useState<ImpedanceKind>("microstrip");
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const [h, setH] = useState("0.20");
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const [er, setEr] = useState("4.5");
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@@ -33,6 +44,22 @@ export function ImpedancePanel() {
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const [busy, setBusy] = useState(false);
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const [trace, setTrace] = useState<ImpedanceTraceResult | null>(null);
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const [stackup, setStackup] = useState<ImpedanceStackupResult | null>(null);
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const [boardNets, setBoardNets] = useState<ImpedanceNetsReport | null>(null);
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const [extraNets, setExtraNets] = useState("");
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useEffect(() => {
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let cancelled = false;
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fetchImpedanceNets(projectId)
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.then((r) => {
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if (!cancelled) setBoardNets(r);
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})
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.catch(() => {
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if (!cancelled) setBoardNets(null);
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});
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return () => {
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cancelled = true;
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};
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}, [projectId]);
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async function runTrace() {
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setBusy(true);
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@@ -90,6 +117,23 @@ export function ImpedancePanel() {
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URL.revokeObjectURL(url);
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}
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async function runSpecifiedNets() {
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const names = extraNets
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.split(/[\s,]+/)
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.map((n) => n.trim())
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.filter(Boolean);
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if (names.length === 0) return;
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setBusy(true);
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setError(null);
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try {
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setBoardNets(await analyzeImpedanceNets(projectId, names));
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} catch (e) {
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setError(e instanceof Error ? e.message : "Net analysis failed");
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} finally {
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setBusy(false);
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}
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}
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const needsGap = kind === "cpw" || kind === "diff";
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return (
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@@ -100,9 +144,9 @@ export function ImpedancePanel() {
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</CardHeader>
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<CardContent className="space-y-4">
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<p className="text-sm text-muted-foreground">
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IPC-2141 / Hammerstad–Jensen from ImpedenceFinder (same as KiCad
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pcb_calculator). Advice only — this tab does not sample the PCB
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and does not emit findings. CPWG is not implemented.
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ImpedenceFinder (Hammerstad–Jensen). The calculator is advice only.
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With a `.kicad_pcb` and stackup, a pipeline run samples routed signal
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nets. CPWG is not implemented upstream.
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</p>
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<div className="grid grid-cols-2 gap-3 sm:grid-cols-3">
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<label className="space-y-1">
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@@ -175,6 +219,72 @@ export function ImpedancePanel() {
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</CardContent>
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</Card>
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<Card>
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<CardHeader>
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<CardTitle className="text-sm">PCB net Z0 (ImpedenceFinder)</CardTitle>
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</CardHeader>
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<CardContent className="space-y-3">
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{!hasPcb && (
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<p className="text-sm text-muted-foreground">
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Upload a `.kicad_pcb` and run analysis. Power/ground nets are
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skipped; signal traces with stackup εr/h are sampled.
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</p>
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)}
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{hasPcb && boardNets?.skipped && (
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<p className="text-sm text-muted-foreground">{boardNets.skipped}</p>
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)}
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{boardNets && boardNets.nets.length > 0 && (
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<table className="w-full text-sm">
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<thead>
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<tr className="text-left text-muted-foreground">
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<th className="py-1">Net</th>
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<th>Z0 avg Ω</th>
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<th>min–max</th>
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<th>mm</th>
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<th>topology</th>
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</tr>
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</thead>
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<tbody>
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{boardNets.nets.map((row) => (
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<tr key={row.net_name} className="border-t border-border">
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<td className="py-1">{row.net_name}</td>
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<td className="tabular-nums">
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{row.error ?? fmt(row.z0_avg_ohms)}
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</td>
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<td className="tabular-nums">
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{row.z0_min_ohms != null
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? `${fmt(row.z0_min_ohms)}–${fmt(row.z0_max_ohms)}`
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: "—"}
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</td>
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<td className="tabular-nums">{fmt(row.length_mm, 2)}</td>
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<td>{(row.topologies || []).join(", ") || "—"}</td>
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</tr>
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))}
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</tbody>
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</table>
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)}
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{hasPcb && (
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<div className="flex flex-wrap items-end gap-2">
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<label className="min-w-40 flex-1 space-y-1">
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<Label>Extra nets</Label>
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<Input
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value={extraNets}
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onChange={(e) => setExtraNets(e.target.value)}
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placeholder="/USB.D+ /USB.D-"
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/>
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</label>
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<Button
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variant="outline"
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onClick={runSpecifiedNets}
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disabled={busy}
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>
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Analyze named nets
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</Button>
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</div>
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)}
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</CardContent>
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</Card>
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{stackup && (
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<Card>
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<CardHeader>
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@@ -11,6 +11,7 @@ import type {
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DesignGraph,
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DeratingRow,
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ImpedanceKind,
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ImpedanceNetsReport,
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ImpedanceStackupResult,
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ImpedanceTraceResult,
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EdifSubDesign,
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@@ -609,6 +610,43 @@ export async function computeImpedance(body: {
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return res.json();
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}
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export async function fetchImpedanceNets(
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projectId: string,
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): Promise<ImpedanceNetsReport> {
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const res = await authFetch(
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`${BASE}/api/projects/${projectId}/impedance/nets`,
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);
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if (!res.ok) {
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const detail = await res.json().catch(() => ({ detail: res.statusText }));
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throw new Error(
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typeof detail.detail === "string" ? detail.detail : "Impedance nets failed",
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);
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}
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return res.json();
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}
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export async function analyzeImpedanceNets(
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projectId: string,
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nets: string[],
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pitch_mm?: number,
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): Promise<ImpedanceNetsReport> {
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const res = await authFetch(
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`${BASE}/api/projects/${projectId}/impedance/nets`,
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{
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method: "POST",
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headers: { "Content-Type": "application/json" },
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body: JSON.stringify({ nets, pitch_mm }),
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},
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);
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if (!res.ok) {
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const detail = await res.json().catch(() => ({ detail: res.statusText }));
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throw new Error(
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typeof detail.detail === "string" ? detail.detail : "Impedance nets failed",
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);
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}
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return res.json();
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}
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export async function fetchReport(
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projectId: string,
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): Promise<ValidationReport> {
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@@ -364,6 +364,27 @@ export interface ImpedanceStackupResult {
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kicad_dru: string;
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}
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export interface ImpedanceNetRow {
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net_name: string;
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length_mm?: number;
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branch_count?: number;
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is_differential?: boolean;
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partner_net_name?: string | null;
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topologies?: string[];
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z0_min_ohms?: number | null;
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z0_max_ohms?: number | null;
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z0_avg_ohms?: number | null;
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flags?: string[];
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sample_count?: number;
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error?: string;
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}
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export interface ImpedanceNetsReport {
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pitch_mm: number;
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nets: ImpedanceNetRow[];
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skipped: string | null;
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}
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export interface NetlistPreviewDesignator {
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ref: string;
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pins: { number: string; net_name: string }[];
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