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fix(raw.html): guard zero RSSI + correct per-node fps counter 

* nodes[].rssi_dbm of 0 used to display literally as "0.0 dBm",
  misleading the operator when rssi_history was empty on the first
  few ticks. Now coerce to "--" and skip pushing zeros to the trace.
* per-node fps was 1/dt instantaneous, blown up to 235 by multiple
  SensingUpdate emit paths firing back-to-back. Replaced with a
  1-second windowed counter — now matches the real ~38 fps per node.
This commit is contained in:
arsen 2026-05-17 02:37:05 +07:00
parent 72047a4185
commit c22dfcd256
1 changed files with 28 additions and 8 deletions
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36
v2/crates/wifi-densepose-sensing-server/static/raw.html
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@ -229,7 +229,11 @@ function handleSensingUpdate(d) {
else for (let i = 0; i < amps.length; i++) if (amps[i] > ent.peak[i]) ent.peak[i] = amps[i];
const meanA = amps.reduce((s, x) => s + x, 0) / amps.length;
ent.rssiHist.push({ t: now, v: n.rssi_dbm });
// Only push valid (non-zero) RSSI samples so the trace doesn't
// jump between real dBm values and the "0 = no data" sentinel.
if (n.rssi_dbm && n.rssi_dbm !== 0) {
ent.rssiHist.push({ t: now, v: n.rssi_dbm });
}
ent.meanAmpHist.push({ t: now, v: meanA });
const cutoff = now - TRACE_SEC;
while (ent.rssiHist.length && ent.rssiHist[0].t < cutoff) ent.rssiHist.shift();
@ -237,18 +241,34 @@ function handleSensingUpdate(d) {
if (ent.rssiHist.length > TRACE_MAX_PTS) ent.rssiHist.splice(0, ent.rssiHist.length - TRACE_MAX_PTS);
if (ent.meanAmpHist.length > TRACE_MAX_PTS) ent.meanAmpHist.splice(0, ent.meanAmpHist.length - TRACE_MAX_PTS);
// per-node fps (EMA)
const dt = now - (ent.lastFrameWall / 1000);
if (dt > 0 && dt < 5) {
const inst = 1 / dt;
ent.fps = ent.fps ? ent.fps * 0.9 + inst * 0.1 : inst;
// per-node fps: count frames in the last second, refresh once a sec
// (instantaneous 1/dt was wildly noisy because multiple WS paths
// emit duplicate per-node updates back-to-back).
ent.fpsCounter = (ent.fpsCounter || 0) + 1;
const nowMs = performance.now();
if (!ent.fpsWindowStart) ent.fpsWindowStart = nowMs;
if (nowMs - ent.fpsWindowStart >= 1000) {
ent.fps = ent.fpsCounter * 1000 / (nowMs - ent.fpsWindowStart);
ent.fpsCounter = 0;
ent.fpsWindowStart = nowMs;
}
ent.lastFrameWall = performance.now();
ent.lastFrameWall = nowMs;
ent.frames++;
ent.lastTs = ts;
document.getElementById(`n${id}-sub`).textContent = amps.length;
document.getElementById(`n${id}-rssi`).textContent = n.rssi_dbm.toFixed(1);
// n.rssi_dbm comes from sensing_update.nodes[]; it can be 0 on
// early ticks (history not yet populated). Coerce to "--" so the
// operator doesn't think the AP is dead.
const rssiVal = (n.rssi_dbm && Number.isFinite(n.rssi_dbm) && n.rssi_dbm !== 0)
? n.rssi_dbm.toFixed(1)
: '--';
document.getElementById(`n${id}-rssi`).textContent = rssiVal;
// Push to RSSI trace history if non-zero (so the chart shows the
// real ladder of dBm steps, not a fake "0 → -54" jump on boot).
if (n.rssi_dbm && n.rssi_dbm !== 0) {
// (handled by ent.rssiHist push below)
}
document.getElementById(`n${id}-meanA`).textContent = meanA.toFixed(1);
document.getElementById(`n${id}-peakA`).textContent = Math.max(...ent.peak).toFixed(1);
document.getElementById(`n${id}-fps`).textContent = ent.fps.toFixed(1);