Function: parseStatus()
function parseStatus(bytes: Uint8Array): PrinterStatus;Parse a 3-byte status notification frame from the printer.
Frame layout: [0x1B, 0x52, code] — code is at byte index 2. The value-to-meaning mapping in this function is carried over from ysfchn/dymo-bluetooth's Result.from_bytes and has not been confirmed by direct observation, which has only positively established code === 0 (success). Treat the table as a best-effort enum pending hardware confirmation.
0 → success. 1 → success (alternate; aliased to 0). 2 → unknown failure. 3 → low battery (printed anyway; warning, ready: true). 4 → cancelled. 5 → unknown failure (alternate; aliased to 2). Bench-confirmed 2026-05-10: with sufficiently small content (≤ ~16 head columns) and engine.forcedTrailingFeedMm: 0, back-to-back prints with identical payload bytes produced a strict 1-5-1-5 alternation for 8+ consecutive attempts (head never engaged on the 5s). The fix is to ensure a minimum total feed-column count per job — either via wider real content (e.g. text "hello" ≈ 30 columns avoids it naturally) or via engine.forcedTrailingFeedMm padding (set to 6 on the LT-200B engine). Code 5 in this scenario reads as "firmware-state-toggle rejection," not a real fault. ysfchn's "unknown failure" mapping may still be correct for other triggers — only the under-minimum-columns case is bench-explained. 6 → battery too low to print. 7 → cassette missing.
mediaLoaded is always true — the LT-200B firmware reports cassette presence only via this post-print frame's code 7, with no out-of-job channel. detectedMedia is always undefined. A malformed frame returns a PrinterStatus with a 'protocol' error rather than throwing.
Parameters
| Parameter | Type |
|---|---|
bytes | Uint8Array |