Feature request: when using stall detection filament loading (G1 H1 Exx) flag whether a stall occurred

[dc42]

Requested by an OEM at Formnext 2023. They use G1 H1 E moves to load filament until a stall occurs, but they need to know whether the move was terminated by a stall or not, to tell if filament loading was successful.

[dc42]

You can already determine this. For example, for extruder 0 you could use this in a macro:

M400
var ex0pos = move.extruders[0].position
G1 E0.2  ; small E move of more than 1 full step to ensure that the extruder is not stalled
G1 H1 E500 F1000
M400
if (move.extruders[0].position - var.ex0pos < 500)
  echo "Extrusion stopped by stall"
else
  echo "Extrusion completed without stalling"