Files
bambuddy/backend/app
MartinNYHC 4705a3027a Configure a spool's filament preset and K profile per nozzle
A slicer preset is bound to a printer model: "Bambu PLA Basic @BBL X1C" is
    not the same preset as "@BBL H2C", and Bambu names a nozzle size in it as
    well. A spool carried exactly one, which was right until the same spool was
    used on a second machine -- the AMS slot on the other one was then
    configured with a preset that machine has no profile for. K profiles had
    the matching gap from the other side: the tables have always been keyed per
    hotend, but the picker could not express it.

    spool_filament_preset and its Spoolman twin store the exceptions, keyed
    (spool, printer_model, nozzle_diameter). Model rather than printer because
    the preset is a property of the model -- "@BBL X1C" is the same preset on
    every X1C, and asking per machine would mean picking the identical value
    twice. K profiles stay on printer_id, because a K value is measured on one
    physical hotend and two machines of the same model legitimately differ.
    Resolution is exact (model, diameter) -> (model, "") -> the spool's own
    preset, so a spool nobody has configured behaves exactly as it did before.
    The form writes one row per nozzle size and never the "" row; that level is
    kept for API clients wanting one value to cover a model.

    Both halves cover every standard nozzle size rather than the size currently
    fitted, because a spool is configured once and nozzles get swapped. The PA
    Profile tab becomes a Printers tab: a model list beside a detail pane
    holding a preset row per size and a K-profile grid of size by hotend. Each
    model is offered only the presets that name it, through the same matcher
    the Configure AMS Slot modal filters with, which moves out of that
    component into utils/slicerPrinterMatch. Presets whose name identifies no
    model -- most user-authored and OrcaSlicer ones -- stay offered everywhere,
    as does whatever is already selected, so a saved override cannot vanish
    from the control that shows it. Every preset carries an origin badge in the
    wording and colours that modal already uses.

    Every path that configures a slot now respects both: manual assign in
    either inventory mode, RFID auto-assign, the Spoolman tag link, the re-fire
    when a slot goes empty to loaded, the re-apply after a calibration-table
    refresh, and the re-selection when a Filament Track Switch moves an AMS to
    the other nozzle. Which nozzle a slot feeds, and how wide it is, was worked
    out independently in seven of those places, each reading nozzles[0] for
    every slot on the machine -- correct on a single-nozzle printer and on a
    dual-nozzle printer with matching nozzles, wrong the moment two sizes are
    fitted. That resolution is now services/slot_nozzle.

    Which array entry belongs to which hotend is no longer inferred. Measured
    on an H2D fitted with a 0.4 high flow on the left and a 0.6 on the right,
    nozzles[0] reads the right hotend, so the array is indexed by extruder id
    and the H2/X2 parser's convention is the one that holds. The legacy
    parser's opposite convention never governs a real dual-nozzle machine:
    every model in DUAL_NOZZLE_MODELS reports device.nozzle.info, and
    left_nozzle_diameter appears in no log or wire capture. Two comments that
    said otherwise were wrong and are fixed; amsHelpers' code was right all
    along and only its comment lied.

    Four defects surfaced while wiring it, all pre-existing except the last.
    The picker identified a chosen calibration by cali_idx alone, and the
    printer numbers its calibration table per nozzle -- on a dual-nozzle
    machine the same index exists on both hotends meaning different things, so
    saving could persist the other hotend's K value and diameter; SpoolBuddy's
    write-tag page carried a verbatim copy and gets the same fix. RFID
    auto-assign chose a K profile with no extruder test at all, so a spool
    calibrated on both hotends had a coin toss decide which pressure-advance
    value the slot got, on the path that runs unattended every time a Bambu
    spool is loaded. The Spoolman tag-link path resolved no preset whatsoever,
    configuring every linked slot with a generic material id and discarding a
    preset set in inventory -- the same defect #1713 fixed on the assign path,
    one function over. And an FTS inlet move re-selected K for nozzle 0 rather
    than for the nozzle the AMS had just been moved to.

    The last one is new here: a per-model override can be a cloud USER preset,
    whose PFUS-prefixed id the slicer rejects, and passing it straight into
    extrusion_cali_sel would silently lose the K-profile link. Reached the
    printer only where such an override exists, which is why nothing in the
    suite caught it. printer_safe_filament_id falls through to the spool's own
    preset and then the tray's RFID value instead.

    Reading a printer's calibration table asks for one nozzle size at a time.
    H2-series firmware answers only the first one or two of a concurrent burst
    of extrusion_cali_get and silently drops the rest, each dropped request
    costing a five-second timeout before its retry: measured at 11 and 23
    seconds on an H2C and an H2D for four parallel requests, against roughly
    one second in series. An X1C answers all four at once, which is why this
    only ever surfaced on dual-diameter printers. Printers themselves are read
    in parallel -- separate machines are separate connections.

    The Configure AMS Slot dialog opens on the spool's own configured values,
    falling back to the slot's last manual configuration and then the tray's
    RFID data. The spool form is wider for the two-pane layout, colour, weight,
    cost and location move to their own tab in two columns, and a printer card
    in expanded view lists every fitted nozzle size rather than the first entry
    alone.
2026-08-28 12:30:51 +02:00
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