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prusa3d / Prusa-Firmware-MMU

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Empty the entire block_index queue when planned moves are aborted #228

Closed gudnimg closed 1 year ago

gudnimg commented 1 year ago

The fixes an issue where the idler can eject all filaments outside their slot by around few cm or more.

Steps to reproduce issue https://dev.prusa3d.com/browse/PFW-1370:

  1. Turn on printer
  2. Preheat extruder
  3. Trigger the Fsensor to 1 (constantly) -- I do this by pressing the lever on the plastic housing
  4. Select "Load to Nozzle" from LCD and select any slot
  5. Wait for failure to appear
  6. Issue appears during one of the retry attempts before showing Fsensor too early error.

When the error is first reported, AbortPlannedMoves is called for all axis. Then when the retry attempts start, there are still queued moves in the block buffer causing both pulley and idler to move at the same time.

Change in memory: Flash: 0 bytes SRAM: 0 bytes

gudnimg commented 1 year ago

Rebased the branch with a minor formatting fix.