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

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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
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wiki/concepts/wsl-dev-networking.md
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@@ -2,7 +2,7 @@
type: reference
tags: [parking, dev-environment, networking, wsl, troubleshooting]
sources: []
updated: 2026-06-15
updated: 2026-09-09
---
# WSL2 Dev Networking (for device testing)
@@ -110,6 +110,15 @@ trap:
Verified on hardware (2026-06-15): after the hook, `10.0.10.121` pings and the real [[lpr-camera]]
Hikvision driver pulls a snapshot with **no** source-forcing (`localAddress` becomes optional).
> **It bit again, 2026-09-09 — and the fix was pinned to the wrong NIC.** Configuring the
> [[k200l-printer]] meant adding `192.168.123.101` beside `10.0.10.203` on the mirrored LAN NIC;
> WSL then sourced 10.0.10.x traffic from the 192.168.123 address: `ping` fine, every HTTP
> connect timing out, `ip route get 10.0.10.7` showing `src 192.168.123.101`. `parking-net.service`
> was active but pins **`eth1`**, and the mirrored LAN NIC is **`eth0`** on this box now — so the
> boot fixer was a no-op. Run `deploy/wsl-fix-route-source.sh eth0` (and fix the unit's argument),
> or `curl --interface 10.0.10.203 …` as a one-off. Interface names are not stable across WSL
> reboots/NIC changes; the script accepts the NIC as an argument for exactly this reason.
## On the real appliance: multi-subnet is a deployment config, not a WSL hack
Production is a **dedicated hardened Linux appliance** ([[disk-os-hardening]]), so the WSL story