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# FILAMENT MANAGEMENT
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[gcode_macro UNLOAD_FILAMENT]
description: Unloads the filament. Note: be careful with PETG, make sure you inspect the tip of your filament before reloading to avoid jams.
gcode:
	SAVE_GCODE_STATE NAME=unload_state
	G91
	{% if params.TEMP is defined or printer.extruder.can_extrude|lower == 'false' %}
		M117 Heating...
		# Heat up hotend to provided temp or 220 as default as that should work OK with most filaments.
		M104 S{params.TEMP|default(220, true)}
		TEMPERATURE_WAIT SENSOR=extruder MINIMUM={params.TEMP|default(220, true)}
	{% endif %}
	{% set unload_speed = printer["gcode_macro RatOS"].filament_unload_speed|float * 60 %}
	{% set unload_length = printer["gcode_macro RatOS"].filament_unload_length|float %}
	M117 Unloading filament...
	# Extrude a bit
	G0 E10 F300
	# Extract filament to cold end area 
	G0 E-3 F3600
	# Wait for three seconds
	G4 P3000
	# Push back the filament to smash any stringing 
	G0 E3 F3600
	# Extract back fast in to the cold zone 
	G0 E-10 F3600
    G4 P1000
	# Continue extraction slowly, allow the filament time to cool solid before it reaches the gears       
	G0 E-{unload_length} F{unload_speed}
	M117 Filament unloaded!
	RESPOND MSG="Filament unloaded! Please inspect the tip of the filament before reloading."
	UPDATE_DELAYED_GCODE ID=_IDLE_HEATER_SHUTDOWN DURATION={printer["gcode_macro RatOS"].load_unload_idle_delay}
	RESTORE_GCODE_STATE NAME=unload_state

[gcode_macro LOAD_FILAMENT]
description: Loads new filament. Note: be careful with PETG, make sure you inspect the tip of your filament before loading to avoid jams.
gcode:
	SAVE_GCODE_STATE NAME=load_state
	G91
	# Heat up hotend to provided temp or 220 as default as that should work OK with most filaments.
	{% if params.TEMP is defined or printer.extruder.can_extrude|lower == 'false' %}
		FORCE_MOVE STEPPER=extruder DISTANCE=15 VELOCITY=10 ACCEL=1000
		M117 Heating...
		M104 S{params.TEMP|default(230, true)}
		TEMPERATURE_WAIT SENSOR=extruder MINIMUM={params.TEMP|default(230, true)}
	{% endif %}
	{% set load_speed = printer["gcode_macro RatOS"].filament_load_speed|float * 60 %}
	{% set load_length = printer["gcode_macro RatOS"].filament_load_length|float %}
	{% set load_second_speed = printer["gcode_macro RatOS"].filament_load_second_speed|float * 60 %}
	{% set load_second_length = printer["gcode_macro RatOS"].filament_load_second_length|float %}

	M117 Loading filament...
	# Load the filament into the hotend area.
	G0 E{load_length} F{load_speed}
	# Wait a secod
	G4 P1000
	# Purge
	G0 E{load_second_length} F{load_second_speed}
	#G0 E40 F100
	# Wait for purge to complete
	M400
	M117 Filament loaded!
	RESPOND MSG="Filament loaded!"
	UPDATE_DELAYED_GCODE ID=_IDLE_HEATER_SHUTDOWN DURATION={printer["gcode_macro RatOS"].load_unload_idle_delay}
	RESTORE_GCODE_STATE NAME=load_state