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feat(espnow): Pi bridge client, binary wire, and espnow-sender firmware

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Replace serial/Wi-Fi driver transport paths with WebSocket bridge client,
binary espnow_wire delivery, device announce registry, and restructured
espnow-sender (AP + broadcast passthrough). Includes docs and tests.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Jimmy
2026-05-23 22:44:44 +12:00
parent f4ef85c182
commit 4fc3f46866
42 changed files with 4167 additions and 848 deletions
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57
docs/images/espnow/boot-sequence.svg Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 780 520" font-family="system-ui, Segoe UI, sans-serif">
<defs>
<marker id="arr" markerWidth="8" markerHeight="8" refX="6" refY="3" orient="auto">
<path d="M0,0 L6,3 L0,6 Z" fill="#333"/>
</marker>
<style>
.actor { fill: #f4f6f8; stroke: #2c3e50; stroke-width: 2; }
.lifeline { stroke: #aaa; stroke-width: 1; stroke-dasharray: 4 4; }
.msg { stroke: #2980b9; stroke-width: 1.5; fill: none; marker-end: url(#arr); }
.msgret { stroke: #27ae60; stroke-width: 1.5; fill: none; marker-end: url(#arr); }
.note { fill: #fef9e7; stroke: #d4ac0d; stroke-width: 1; }
.t { font-size: 13px; fill: #222; }
.h { font-size: 14px; font-weight: 700; fill: #111; }
.s { font-size: 11px; fill: #555; }
</style>
</defs>
<text x="390" y="24" text-anchor="middle" class="h" font-size="16">Boot and registration sequence</text>
<!-- Actors -->
<rect class="actor" x="40" y="40" width="120" height="40" rx="6"/>
<text x="100" y="66" text-anchor="middle" class="h">Driver</text>
<line class="lifeline" x1="100" y1="80" x2="100" y2="480"/>
<rect class="actor" x="310" y="40" width="120" height="40" rx="6"/>
<text x="370" y="66" text-anchor="middle" class="h">Bridge</text>
<line class="lifeline" x1="370" y1="80" x2="370" y2="480"/>
<rect class="actor" x="580" y="40" width="140" height="40" rx="6"/>
<text x="650" y="66" text-anchor="middle" class="h">led-controller</text>
<line class="lifeline" x1="650" y1="80" x2="650" y2="480"/>
<!-- Messages -->
<path class="msg" d="M 100 110 L 368 110"/>
<text x="234" y="102" text-anchor="middle" class="t">ESP-NOW broadcast ANNOUNCE</text>
<text x="234" y="128" text-anchor="middle" class="s">dest ff:ff:ff:ff:ff:ff</text>
<path class="msg" d="M 372 150 L 648 150"/>
<text x="510" y="142" text-anchor="middle" class="t">WS uplink: peer MAC + packet</text>
<rect class="note" x="520" y="168" width="200" height="44" rx="4"/>
<text x="620" y="188" text-anchor="middle" class="s">upsert device in</text>
<text x="620" y="204" text-anchor="middle" class="s">db/device.json</text>
<path class="msgret" d="M 648 230 L 372 230"/>
<text x="510" y="222" text-anchor="middle" class="t">WS downlink: GROUPS unicast</text>
<path class="msgret" d="M 368 270 L 102 270"/>
<text x="234" y="262" text-anchor="middle" class="t">ESP-NOW unicast GROUPS</text>
<rect class="note" x="30" y="300" width="140" height="40" rx="4"/>
<text x="100" y="318" text-anchor="middle" class="s">store group ids</text>
<text x="100" y="332" text-anchor="middle" class="s">in RAM</text>
<text x="390" y="380" text-anchor="middle" class="s">Driver re-sends ANNOUNCE until GROUPS received if Pi/bridge late</text>
<text x="390" y="460" text-anchor="middle" class="s">ANNOUNCE body: name, num_leds, color_order, startup_mode, brightness</text>
</svg>
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