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extruder: Allow an extruder object to be created without a stepper

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This may be useful for dual hotend printers that have only one
stepper.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2022-02-21 13:51:27 -05:00
parent 4a8aece6a7
commit 6627d036ac
2 changed files with 25 additions and 12 deletions
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23
klippy/kinematics/extruder.py
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@ -79,6 +79,8 @@ class ExtruderStepper:
cmd_SET_PRESSURE_ADVANCE_help = "Set pressure advance parameters"
def cmd_default_SET_PRESSURE_ADVANCE(self, gcmd):
extruder = self.printer.lookup_object('toolhead').get_extruder()
if extruder.extruder_stepper is None:
raise gcmd.error("Active extruder does not have a stepper")
extruder.extruder_stepper.cmd_SET_PRESSURE_ADVANCE(gcmd)
def cmd_SET_PRESSURE_ADVANCE(self, gcmd):
pressure_advance = gcmd.get_float('ADVANCE', self.pressure_advance,
@ -181,12 +183,16 @@ class PrinterExtruder:
self.trapq_append = ffi_lib.trapq_append
self.trapq_finalize_moves = ffi_lib.trapq_finalize_moves
# Setup extruder stepper
self.extruder_stepper = ExtruderStepper(config)
self.extruder_stepper.stepper.set_trapq(self.trapq)
pa = config.getfloat('pressure_advance', 0., minval=0.)
smooth_time = config.getfloat('pressure_advance_smooth_time',
0.040, above=0., maxval=.200)
self.extruder_stepper._set_pressure_advance(pa, smooth_time)
self.extruder_stepper = None
if (config.get('step_pin', None) is not None
or config.get('dir_pin', None) is not None
or config.get('rotation_distance', None) is not None):
self.extruder_stepper = ExtruderStepper(config)
self.extruder_stepper.stepper.set_trapq(self.trapq)
pa = config.getfloat('pressure_advance', 0., minval=0.)
smooth_time = config.getfloat('pressure_advance_smooth_time',
0.040, above=0., maxval=.200)
self.extruder_stepper._set_pressure_advance(pa, smooth_time)
# Register commands
gcode = self.printer.lookup_object('gcode')
if self.name == 'extruder':
@ -201,7 +207,8 @@ class PrinterExtruder:
def get_status(self, eventtime):
sts = self.heater.get_status(eventtime)
sts['can_extrude'] = self.heater.can_extrude
sts.update(self.extruder_stepper.get_status(eventtime))
if self.extruder_stepper is not None:
sts.update(self.extruder_stepper.get_status(eventtime))
return sts
def get_name(self):
return self.name
@ -259,6 +266,8 @@ class PrinterExtruder:
start_v, cruise_v, accel)
self.last_position = move.end_pos[3]
def find_past_position(self, print_time):
if self.extruder_stepper is None:
return 0.
return self.extruder_stepper.find_past_position(print_time)
def cmd_M104(self, gcmd, wait=False):
# Set Extruder Temperature