Monster Robot Party
3056fd70fc
- pricegod-urovo-daemon: C# :7790 HTTP service, drives the Urovo D812R+ via the GTSPL SDK; prints a label AND encodes the UHF chip in one pass. Drop-in for the PriceGod extension's daemon.js (same :7790, CORS *). - chafcheck: Chafon H-102 UHFPrimeReader P/Invoke probe. - ASSESSMENT.md: everything done + learned this session -- the ribbon-latch fix, PET-labels-are-not-direct-thermal finding, unreliable-status-byte quirk, SKU->EPC scheme, the Chafon HID-mode dead end, and how to port the print+encode recipe to the Mac (GTSPL Java SDK / raw TSPL). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
55 lines
2.8 KiB
Markdown
55 lines
2.8 KiB
Markdown
# pricegod-urovo-daemon
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The **Windows** counterpart to the Mac `rfid-daemon`. Instead of a Chafon gun writing a
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loose chip while a Dymo prints a separate sticker, this drives the **Urovo D812R+ (RFID)**
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to **print the label AND encode the UHF chip in one pass** on the composite (paper+chip) rolls.
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It listens on `http://localhost:7790/` with `CORS *`, so it's a drop-in for the PriceGod
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extension's existing `daemon.js` client — same port, same JSON shape.
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## Run it
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Double-click **`start-daemon.cmd`** (leave the window open while you work). That's it —
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no Node, no .NET SDK, no gitea clone. It's a self-contained `.exe`.
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To rebuild after editing `daemon.cs`: double-click **`build.cmd`**.
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## What's inside
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- `daemon.cs` — the service (C#, .NET Framework 4.x).
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- `pricegod-urovo-daemon.exe` — the compiled daemon.
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- `GTSPL_SDK.dll`, `GTSPL_SDK_C.dll`, `zlib.net.dll` — the Gainscha/Urovo print SDK
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(must sit beside the .exe). Copied from the vendor Windows SDK.
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The print/encode sequence is a straight port of the proven `gtcheck.cs` `rfidgo` path:
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`SET RIBBON OFF` → continuous geometry (`GAP 0`, RFID rolls blind the optical gap sensor)
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→ `writeUHF` → draw text + QR → `printlabel` → read-back verify.
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## Routes
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| method | path | body | returns |
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|---|---|---|---|
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| GET | `/status` | — | `{ok, ready, status, statusText, printer}` |
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| POST | `/print-encode` | `{sku, releaseId, artist?, title?, price?, condition?, w?, h?, gap?}` | `{ok, sku, releaseId, epc, verified, status}` |
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| POST | `/write-tag` | alias of `/print-encode` (the daemon.js name) | same |
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| GET | `/read-tag` | — | `{ok, epc, sku, releaseId, recognized}` |
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| POST | `/calibrate` | — | RFID auto-calibration |
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| POST | `/recover` | — | ribbon-off + one feed to clear a fault |
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Quick test (PowerShell):
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```powershell
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Invoke-RestMethod http://localhost:7790/status
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```
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## SKU ↔ EPC scheme (⚠ verify)
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The 96-bit EPC (12 bytes) is packed as: **6 bytes** 14-digit timestamp SKU · **4 bytes**
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release_id · **2 bytes** `0xEC01` marker. This lives in the `Epc` class in `daemon.cs` and
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is the **only** thing that needs to change if it must match a different (Mac/Chafon) layout —
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nothing else depends on the byte order. Confirm by reading an existing tag: put a
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Chafon-written record at the antenna and `GET /read-tag`.
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## Notes / open items
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- Default label geometry is `65×37 mm`, continuous (`GAP 0`). Adjust to your actual RFID
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roll via the `w`/`h`/`gap` fields, or change the `DEF_*` constants.
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- The label layout (text lines + QR) is functional, not yet pixel-matched to the 51×19
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Dymo design in the extension's `labels.js`.
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- The Chafon gun is still needed for **reading a loose tag off a shelf** — the Urovo can
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only read/write a tag physically inside the printer.
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