mca/parking_solution
3
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 10 Wiki Activity

feat(devices): K200L printer driver — live cover/paper status from the J-Speed LAN board

Browse Source 
The park-buzi printer is a K200L (Xprinter/ICS XP-K200L; its LAN board and USB
descriptor call it "POS-80"). Its board serves the Rongta's five-row status table
under /prt_status.htm — but the reply carries no HTTP status line or headers, which
node:http rejects, so the Rongta driver could never read it and the unit was filed
in July as "no status page → generic driver" (reachability only).

New `k200l` driver (printer-k200l.ts): prints through the generic ESC/POS device
(same bytes, TCP 9100 or usblp) and reads the page over a raw socket, tolerant of
both the headerless and a proper HTTP reply. Mapping mirrors the Rongta: board
unreachable → offline; page not understood → degraded, never ready; any fault →
degraded naming it; USB → reachability floor. The Rongta driver is untouched.
Tests replay the captured headerless page (devices suite 76). Live against the
lab unit: ready; with the cover open the board reports cover open, paper out,
off-line.

Wiki: new k200l-printer entity (names, network setup from factory
192.168.123.100, board quirks, status page, what it means for park-buzi — over
USB the app never saw cover/paper state at all), cross-links on the Rongta,
status-monitoring, USB-transport and WSL-networking pages (parking-net pinned to
eth1 while the LAN NIC is eth0), index.

Claude-Session: https://claude.ai/code/session_01FWncR69HgGPuei1dLrW3cU
This commit is contained in:
Julian Çuni
2026-09-09 12:34:59 +02:00
parent 7e21cf057e
commit 552d87d75b
11 changed files with 645 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
wiki/concepts/printer-status-monitoring.md
+15 -1
View File
@@ -2,7 +2,7 @@
type: concept
tags: [parking, printer, device, monitoring, reliability]
sources: []
updated: 2026-06-14
updated: 2026-09-09
---
# Printer status monitoring
@@ -90,3 +90,17 @@ reads. Full repo typechecks.
Yes/No and degrade on anything unexpected, so this is a confidence check, not a blocker.
- Tying a `degraded`/`offline` entry-dispenser into [[printer-roles-failover]] failover and the
(not-yet-built) entry flow's all-printers-down policy ([[device-input-flow]]).
## K200L — a second status-page board, and a fetch that node:http can't do (2026-09-09)
The park-buzi printer turned out to be a **K200L** (Xprinter/ICS XP-K200L; LAN board "J-Speed
Ethernet WebConfig 1.02", self-named "POS-80"). Its board serves the **same five decoded Yes/No
rows** as the Rongta page — under **`/prt_status.htm`**. Two things kept it invisible until now:
the Rongta driver only knew `/prn_stat.htm` (so in July the unit was filed as "no status page →
generic driver"), and the board's reply carries **no HTTP status line or headers** (HTTP/0.9
style), which `node:http` rejects outright and `curl` shows as an empty `000`. The new **`k200l`**
driver (`printer-k200l.ts`) prints through the generic ESC/POS path and reads the page over a raw
TCP socket, tolerant of both reply shapes; mapping is the Rongta one (unreachable → offline; page
not understood → degraded, never ready; any fault → degraded naming it; else ready; USB →
reachability floor). Bench-verified: cover open → amber "cover open, paper out, printer off-line".
Tests replay the captured headerless reply. Full device notes: [[k200l-printer]].