julian
392d44d842
The reader HTTP-GETs on each scan and beeps/acts on our JSON reply (host-in-the-
loop, synchronous). New route GET/POST /qa/mcardsea.php parses the SDK query,
runs the scan through the read dispatcher (permit match -> permit flow; else
transient exit), and replies the SDK verdict: status 1=valid (beep 2x) /
0=invalid (beep 1x), output, time-sync.
Refactored the read flows to return a ReadOutcome {accepted, direction, reason}
so the reply reflects the real accept/reject decision (ReadDispatcher.dispatch,
ExitFlow.handleAt, PermitFlow.run). Fire-and-forget readers ignore it.
Reader's lane is keyed off its serial (cjihao) as lane_devices.id for now;
endpoint is public (reader has no auth, on the device subnet).
Verified via inject: valid permit QR -> status:1 + open; re-scan -> permit exit;
unknown QR -> status:0; barrier-less lane -> status:0.
81 lines
4.6 KiB
Markdown
81 lines
4.6 KiB
Markdown
---
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type: entity
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tags: [parking, hardware, readers, qr]
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sources: [gee-qr-er80]
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updated: 2026-06-16
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status: open
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---
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# GEE-QR-ER80 (QR access reader)
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The project's **QR-code reader** (GEE NFC LIMITED). A static optical scanner for **QR /
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DataMatrix / 1D barcode**, optional ID/IC card. This is the **[[ticket-encoding|QR ticket]]
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scanner** the design called for — read at the pay station and exit lane — and a path for **QR
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[[permit]]** credentials. On hand: variant **`-Q-W`** (QR scanner; Wiegand/RS-232/RS-485).
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(See [[gee-qr-er80|datasheet summary]] / `raw/`.)
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## What it is (and isn't)
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- **Optical, not RFID-prox.** Earlier we *assumed* "ER80-EM" = a 125 kHz EM4100 card reader — the
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datasheet corrects that: it's a **QR/barcode scanner**. The `-EM` in the original label was a
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mis-id; the real model is **GEE-QR-ER80**. Optional `D`/`C` variants add ID/IC card, but the unit
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on hand is **QR-only** (`-Q`).
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- **Multi-interface** (Wiegand 26/34, RS-232, RS-485, USB, TCP/IP); the `-W` variant exposes
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**Wiegand + RS-232/RS-485**.
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## How it integrates — HTTP-GET push, server replies the verdict (confirmed via SDK)
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The protocol is settled by the **[[qrcode-sdk|QRCode SDK v1.6.5]]** (not serial as first guessed).
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The reader is configured (Windows tool `QRCode_v1_6_5.exe`) with a **server IP/port** and a "server
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language" (only picks the URL path, e.g. `/qa/mcardsea.php`). **On each scan it HTTP-GETs the host:**
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```
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GET /qa/mcardsea.php?cardid=<QR>&mjihao=<devId>&cjihao=<devSN>&status=<2 chars>&time=<utc>
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```
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`cardid` = scanned data; `status` low digit = **direction (1=in / 0=out)**. The host replies JSON
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`{data:[{cardid,cjihao,mjihao,status,time,output}],code:0}` where reply **`status` 1=valid (beep
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2×) / 0=invalid (beep 1×)**, **`output` 0=Access/1=WG26/2=WG34**, `time` syncs the clock.
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This is **host-in-the-loop and SYNCHRONOUS**: the GET *is* the access query and **our reply is the
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decision** — it drives the reader's beep + output. So unlike a fire-and-forget reader, the endpoint
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must decide (valid/invalid, direction from `status`) and reply, then also emit a `DeviceReadEvent`
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on the `read` bus for the entry/exit/permit flows ([[parking-session]], [[permit]]) to open the
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barrier. ([[device-input-flow]] is the analogous push pattern; this one also returns a verdict.)
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> **This explains the "no beep":** feedback comes from the server's JSON reply, not locally. A
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> non-JSON / missing reply ⇒ no beep even though the scan worked. So "no beep" ≠ "didn't scan."
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- Pushes over plain **HTTP** to our `10.0.10.x` host (on the device subnet); no serial wiring, no
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Wiegand-decode hardware. Suits the host-in-the-loop model; autonomy is moot anyway
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([[dingtian-relay]] has no onboard ACL).
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- **Linux-supported**, 4–15 VDC, default IP `192.168.1.99` — fits the [[disk-os-hardening|appliance]].
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## Resolved (2026-06-16)
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- Protocol = HTTP GET poll + JSON verdict (above). The earlier "serial/Wiegand, find the baud"
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open questions are **moot** — it's HTTP. Wiegand is the reader's *output line* on a valid read
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(the reply `output` field), not the host transport.
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## As-built (2026-06-16)
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- **Endpoint** `GET/POST /qa/mcardsea.php` (`apps/server/src/routes/qr-reader.ts`, public — the
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reader has no auth, sits on the device subnet). Parses `cardid/mjihao/cjihao/status/time`, runs
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the scan through the **read dispatcher** (permit match → permit flow; else transient exit), and
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replies the **SDK verdict**: `status` 1=valid(beep 2×)/0=invalid(beep 1×), `output` 0, `time`.
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- The read flows were refactored to **return a `ReadOutcome` { accepted, direction, reason }** so the
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endpoint's reply reflects the real accept/reject (the dispatcher decides AND opens the barrier via
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the flows). A fire-and-forget reader ignores the outcome.
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- **Lane mapping:** the endpoint keys the reader's `lane_devices` id off the device **serial
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(`cjihao`)** for now — so assign the reader with `lane_devices.id = <serial>`. Refine when the
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setup wizard models the reader's server-side identity properly.
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- Verified via inject: valid permit QR → `status:1` + open; re-scan → permit exit (still valid);
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unknown QR → `status:0`; reader on a barrier-less lane → `status:0`.
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## Open / to confirm on hardware
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- A **live scan** still hadn't reached the server during bring-up (no beep). With the real endpoint
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now replying the verdict, re-test: scan → expect a beep + a GET in the server log. If still
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nothing, it's the reader's scan/trigger/mode (not the server).
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- **Reader→lane identity:** confirm what the device actually sends as `cjihao`/`mjihao` and align the
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`lane_devices` assignment (the wizard doesn't yet capture the reader's serial as its id).
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