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Add LiPo battery monitoring with ESP-NOW cache and dashboard API.

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Slaves report pack voltages every 30s; the master caches them for fast
BATTERY_STATUS reads. goTool exposes REST/WebSocket and shows values in
the dashboard, with a nanopb fix so optional lipo submessages encode.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
skruecken
2026-05-29 20:14:28 +02:00
co-authored by Cursor
parent eb67a46158
commit 3cb0b5bbe9
30 changed files with 1618 additions and 150 deletions
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goTool/README.md
+12 -2
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@@ -87,7 +87,7 @@ Polling runs only when at least one connection has `receive_accel: true` **and**
**Hello** (on connect; accel is off until `set_stream`):
```json
{"type":"hello","serial_port":"/dev/ttyUSB0","interval_ms":16,"commands":["set_stream","get_stream","set_accel_stream","get_accel_stream","set_led_ring"]}
{"type":"hello","serial_port":"/dev/ttyUSB0","interval_ms":16,"commands":["set_stream","get_stream","set_accel_stream","get_accel_stream","set_led_ring","get_battery"]}
```
**Receive accel on this connection** (optional `interval_ms`, default from `-accel-interval`):
@@ -167,7 +167,7 @@ The dashboard can configure nodes using the same UART commands as the CLI:
| Alle Slaves | per-slave ESP-NOW (Master bleibt unverändert; CLI `-all` setzt auch den Master) |
| Unicast test | `unicast-test -client ID` |
HTTP API (used by the web UI): `GET/POST /api/deadzone`, `GET/PUT /api/clients/{id}/accel-stream`, `POST /api/accel-stream` (legacy / `all_clients`), `POST /api/led-ring`, `POST /api/unicast-test`, `POST /api/find-me`, `POST /api/restart`, `POST /api/ota` (multipart field `firmware`, max 2 MiB).
HTTP API (used by the web UI): `GET/POST /api/deadzone`, `GET/PUT /api/clients/{id}/accel-stream`, `POST /api/accel-stream` (legacy / `all_clients`), `GET/POST /api/battery`, `POST /api/led-ring`, `POST /api/unicast-test`, `POST /api/find-me`, `POST /api/restart`, `POST /api/ota` (multipart field `firmware`, max 2 MiB).
**LED ring** (`POST /api/led-ring` and WebSocket `set_led_ring` on `:8081`):
@@ -179,6 +179,16 @@ HTTP API (used by the web UI): `GET/POST /api/deadzone`, `GET/PUT /api/clients/{
Modes: `clear`, `color` (full ring), `progress` (0–100), `digit` (0–10 symbols), `blink`, `find-me`. Use `client_id` (0 = master), or `all_clients` (+ optional `slaves_only`) for broadcast.
**Battery** (`GET/POST /api/battery`, WebSocket `get_battery` on `:8081`):
```json
{"all_clients":true}
{"client_id":0}
{"client_id":16}
```
Response: `samples[]` with `client_id`, `lipo1`/`lipo2` (`valid`, `voltage_mv`, `percent`), `age_ms`. Slaves push to the master every **30 s**; UART reads the cache (fast). Dashboard polls with `all_clients`.
**Accel stream per slave** (must be enabled before values appear; goTool polls only while at least one slave has stream on):
```http