julian
9c9f777784
The rongta-printer "Deployment" section still described a single
2026-06-14 unit. The live site now runs two: entry-dispenser 10.0.10.9
(Cashino, `cashino` ping-only driver) and booth-receipt 10.0.10.10
(Rongta, full status-page monitoring). Follow-up to 3e6773a.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
60 lines
3.3 KiB
Markdown
60 lines
3.3 KiB
Markdown
---
|
|
type: entity
|
|
tags: [parking, hardware, printer, device]
|
|
sources: []
|
|
updated: 2026-06-14
|
|
---
|
|
|
|
# Rongta 80mm thermal printer
|
|
|
|
The chosen ticket/receipt printer: a **Rongta RP-series 80mm network thermal printer** (and the
|
|
many ESC/POS-compatible OEM clones that share its firmware). Driver `rongta` in
|
|
`packages/devices` implements [[device-adapter-pattern|PrinterDevice]].
|
|
|
|
## Transport & protocol
|
|
|
|
- **ESC/POS over a raw TCP socket on port 9100** (the JetDirect/RAW convention). The driver
|
|
opens the socket, writes the ESC/POS byte stream, waits for flush, closes.
|
|
- **No authentication** on the print socket — anyone who can reach port 9100 can print. Like
|
|
every other field device it must sit on the **isolated device VLAN** ([[network-isolation]]).
|
|
There is no real HTTP/control boundary on the device (same posture as [[dingtian-relay]]).
|
|
- **Health check** is a TCP connect probe to 9100. The print socket exposes no status protocol
|
|
we rely on; the print itself is the real reachability test (failover attempts the print).
|
|
- **Live status** comes from the device's own web page `http://<host>/prn_stat.htm` (port 80),
|
|
which decodes Cover Open / Cutter Error / Paper End / Paper Near End / Off-Line into Yes/No.
|
|
We scrape that rather than hand-decode `DLE EOT` — this clone's DLE EOT reply bytes do **not**
|
|
match the canonical ESC/POS bit layout (verified on hardware), so trusting the device's own
|
|
decode avoids a false-healthy. Implemented as `readStatus()`; see [[printer-status-monitoring]].
|
|
|
|
## Deployment (this site)
|
|
|
|
- First printer verified reachable at **10.0.10.6:9100** from the host (TCP connect OK,
|
|
2026-06-14).
|
|
- **Two printers configured (as of 2026-06-18)**, by role — see [[printer-roles-failover]]:
|
|
- **entry-dispenser** — `10.0.10.9`, outside at the lane; the driver takes the entry
|
|
ticket. This unit is a **Cashino**, not a Rongta: it prints the same ESC/POS stream but
|
|
serves no `/prn_stat.htm` status page, so it runs on the `cashino` driver (reachability
|
|
PING only, no paper/cover status) — see [[printer-status-monitoring]].
|
|
- **booth-receipt** — `10.0.10.10`, inside the booth; receipts, AND the backup that prints
|
|
the entry ticket if the outside dispenser is offline. This unit is a **Rongta** (`rongta`
|
|
driver, full status-page monitoring).
|
|
|
|
## Ticket rendering
|
|
|
|
`printTicket(TicketData)` builds ESC/POS: `ESC @` init, centered/bold/double-size header,
|
|
lane, ticket id, issued-at, feed + partial cut (`GS V B`). CP437/ASCII subset. The entry ticket
|
|
encodes the id as a **1D Code128** barcode (`GS k`).
|
|
|
|
**`printSubscriptionCard(SubscriptionCardData)`** (added 2026-06-18) renders a **2D QR** of the
|
|
[[subscription]] code via ESC/POS **`GS ( k`** (model 2, EC level M) — firmware-rendered, no bitmap
|
|
dependency — plus the code as text + holder/validity. Used for the auto-printed + reprintable
|
|
subscription card. (Verified: the `GS ( k` store/print byte sequences + the embedded code appear on
|
|
the wire against a TCP capture.)
|
|
|
|
## Status
|
|
|
|
Driver written and compiles; entry-ticket layout is a first pass; live status monitoring is
|
|
implemented and verified ([[printer-status-monitoring]]). The receipt/exit layout and the
|
|
cash-drawer kick (ESC/POS `ESC p`) are **not yet implemented** — they arrive with the
|
|
exit/payment flow. Replaces the generic "Epson TM / Citizen" booth-printer line in [[bom]].
|